The refrigeration industry has seen many legends, but few names carry as much weight in the workshop as Matsushita—the manufacturing powerhouse now known globally as Panasonic. Among their most reliable workhorses is the D77C18RAX5 compressor. This hermetic reciprocating unit has been the backbone of thousands of residential refrigerators and commercial chest freezers, prized for its “set it and forget it” reliability.
Engineering Excellence: The D77C18RAX5 Architecture
The D77C18RAX5 is a Low Back Pressure (LBP) compressor designed specifically to handle the rigors of deep freezing and standard refrigeration. Built in Malaysia under strict quality controls, this model utilizes a 7.7cc displacement to move R134a refrigerant efficiently through the system.
From an engineering perspective, the “D77” series is celebrated for its high volumetric efficiency and robust thermal protection. Unlike modern inverter compressors that require complex electronic control boards, the D77C18RAX5 relies on a tried-and-true RSIR (Resistive Start, Inductive Run) motor. This makes it exceptionally resilient to voltage fluctuations often found in older residential grids.
Technical Specifications Table
Feature
Specification
Model
D77C18RAX5
Manufacturer
Matsushita (Panasonic)
Refrigerant Type
R134a
Horsepower (HP)
1/4 HP
Displacement
7.7 cm³
Voltage/Frequency
220-240V / 50Hz
Application Range
Low Back Pressure (LBP)
Cooling Capacity
195 Watts (Approx. 665 BTU/h)
Motor Type
RSIR
Starting Current (LRA)
11.5 A
Running Current
1.3 – 1.5 A
Oil Type
POE (Polyolester)
Cooling Method
Static (Natural Convection)
Performance Comparison: R134a vs. R600a Variants
In the modern landscape, there is a push toward R600a (isobutane). However, the D77C18RAX5 remains a critical component for repairs because of its specific pressure-temperature relationship. When compared to an R600a equivalent, the D77 series offers higher mass flow rates, which is essential for older cabinet designs with smaller evaporator surface areas.
Metric
Matsushita D77C18RAX5 (R134a)
Typical R600a 1/4 HP Equivalent
Displacement
7.7cc
11.0cc to 12.0cc
Pressure Levels
Higher Discharge Pressures
Lower (Vacuum-prone)
Reliability
Proven 15-20 year lifespan
High (but sensitive to moisture)
Lubrication
POE Oil (Hygroscopic)
Mineral Oil
Expert Insight: Field Service Tips
When replacing this unit, field technicians must prioritize the evacuation process. Since the D77C18RAX5 uses POE oil, any moisture left in the system can react to form acids that eat away at the motor windings.
Always replace the Filter Drier: Never install a new D77 without a fresh XH-9 or universal drier.
Verify the Capacitor: While most are RSIR, some variations use a starting capacitor to assist in high-ambient starts. Check the relay housing before installation.
Heat Management: Ensure the condenser coils are cleaned. The D77 is thermally protected, but frequent cycling due to heat buildup will eventually degrade the internal valves.
Detailed Compressor Data Sheet
Model
D77C18RAX5
Utilisation (mbp/hbp/lbp)
LBP
Domaine (Freezing/Cooling)
Domestic Freezing / Refrigerator Cooling
Oil Type and quantity
POE 230ml
Horsepower (HP)
1/4 HP
Refrigerant Type
R134a
Power Supply
220V-240V ~ 50Hz
Cooling Capacity BTU
665 BTU/h
Motor Type
RSIR
Displacement
7.7 cc
Winding Material
Copper
Pression Charge
Low side: 0.5 – 2 PSI (Running)
Capillary Recommendation
0.031″ or 0.036″ (Length varies by cabinet)
Modele Frigo
Fits National, Panasonic, and Samsung Older Models
Temperature function
-35°C to -10°C
With fan or no
Static cooling (No fan required for compressor)
Commercial or no
Light Commercial / Domestic
Amperage in function
1.4 A
LRA (Locked Rotor Amps)
11.5 A
Type of relay
PTC Relay
Capacitor
Generally None (Option for Start Cap exists)
5 Remplacement (Same Gas)
Embraco EG70HLR, Secop TLES7.5KK.3, Donper QD75, LG MA72LAEG, ACC GVY75AA
Thermal Protection: Built-in overload protector prevents motor burnout during brownouts.
Low Vibration: The internal spring mounting system is designed for ultra-quiet household operation.
Global Standard: Parts like relays and overloads are universally available, making maintenance simple anywhere in the world.
Engineering Notice: If you find this compressor running hot but not cooling, check the discharge pressure. These units are extremely durable, but if the valves are bypassed due to liquid slugging, the efficiency drops significantly. Always ensure the refrigerant charge is weighed in according to the appliance nameplate.
Focus Keyphrase: Matsushita D77C18RAX5 Compressor 1/4 HP R134a Specifications and Replacement Guide
SEO Title: Mbsm.pro – Matsushita D77C18RAX5 Compressor | 1/4 HP | R134a | LBP Specs
Meta Description: Discover the technical specifications of the Matsushita D77C18RAX5 compressor. A professional guide to 1/4 HP R134a cooling capacity, amperage, and reliable replacements.
Excerpt: The Matsushita D77C18RAX5 is a legendary 1/4 HP refrigerator compressor optimized for R134a refrigerant. Known for its robust RSIR motor and 7.7cc displacement, it delivers 195W of cooling power for domestic freezers and refrigerators. This guide provides full technical data, wiring details, and the best professional cross-reference replacements for modern refrigeration repair.
Focus Keyphrase: Huayi HYE69Y63 Compressor 1/5 HP R134a LBP Technical Specifications and Professional Cross-Reference Guide for Refrigerator Repair
SEO Title: Mbsmpro.com, Compressor, HYE69Y63, 1/5 hp, Huayi, Cooling, R134a, 168 W, 1.2 A, 1Ph 220-240V 50/60Hz, LBP, RSIR, -35°C to -10°C, freezing
Meta Description: Technical analysis of the Huayi HYE69Y63 1/5 HP compressor. Learn about its R134a performance, LBP cooling capacity, electrical wiring schemas, and top 10 replacement alternatives for technicians.
Excerpt: The Huayi HYE69Y63 is a highly efficient hermetic reciprocating compressor designed for low back pressure applications using R134a refrigerant. With a 1/5 HP rating and dual-frequency compatibility (50/60Hz), this motor is a cornerstone for domestic refrigerators and freezers. This comprehensive guide covers technical datasheets, electrical wiring, and professional replacement strategies for global cooling systems.
Mastering Domestic Refrigeration: The Technical Profile of the Huayi HYE69Y63 Compressor
In the precision-driven world of refrigeration engineering, the Huayi HYE69Y63 stands as a testament to reliable, small-scale thermal management. As a 1/5 horsepower unit optimized for Low Back Pressure (LBP) cycles, this compressor is a frequent choice for manufacturers of domestic refrigerators and light-duty freezers. Its ability to operate across both 50Hz and 60Hz frequencies makes it a versatile global component, capable of maintaining sub-zero temperatures with impressive volumetric efficiency.
Engineering Design and Performance
The HYE69Y63 utilizes a hermetic reciprocating mechanism, engineered to move R134a refrigerant with minimal mechanical friction. In the field, technicians value this model for its thermal protection systems and robust winding material, which ensure longevity even in high-ambient temperature environments. The “HYE” series from Huayi is recognized for its low noise profile and vibration-damping housing, making it ideal for residential kitchen appliances.
Technical Data and Specifications Table
Feature
Detailed Specification
Model
HYE69Y63
Utilisation (mbp/hbp/lbp)
LBP (Low Back Pressure)
Domaine (Freezing/Cooling)
Freezing / Deep Cold Storage
Oil Type and Quantity
POE (Ester Oil) – Approx. 180 ml
Horsepower (HP)
1/5 HP
Refrigerant Type
R134a
Power Supply
220-240VAC / 50-60Hz / 1 Phase
Cooling Capacity (ASHRAE)
168 Watts / 573 BTU/h (@ -23.3°C)
Motor Type
RSIR (Resistive Start – Inductive Run)
Displacement
6.9 cm³
Winding Material
High-Grade Copper
Pressure Charge
0.8 to 1.3 Bar (Evaporating Pressure)
Capillary Recommendation
0.031″ ID (Length dependent on cabinet)
Refrigerator Brands
Haier, Whirlpool, Midea, Hisense
Temperature Function
-35°C to -10°C (-31°F to 14°F)
Cooling System
Static (Natural Convection)
Commercial Class
Domestic / Residential
Amperage (FLA)
1.1 A to 1.3 A
LRA (Locked Rotor Amps)
12.0 A
Type of Relay
PTC (Positive Temperature Coefficient)
Capacitor Requirement
Generally none (Standard RSIR configuration)
Electrical Wiring Schema (RSIR Configuration)
Correct electrical connection is paramount for the safety of the hermetic motor. The terminal block of the HYE69Y63 follows the standard triangular pin layout:
Common (C): Located at the top of the triangle. This connects to the line supply through the Thermal Overload Protector. Main/Run (M): Located at the bottom right. This winding remains energized throughout the cooling cycle. Start (S): Located at the bottom left. This winding is energized momentarily via the PTC relay to initiate rotation.
Technician’s Insight: If the compressor fails to start but hums, check the resistance between C-M and C-S. A healthy motor will show a combined resistance across S-M that equals the sum of the two individual readings.
Comparative Performance Analysis
When comparing the HYE69Y63 against its industry peers, we see a focus on balancing displacement with energy consumption.
Metric
Huayi HYE69Y63 (R134a)
Standard 1/5 HP (R600a Equivalent)
Displacement
6.9 cm³
10.2 cm³
Operating Pressure
Positive (Standard)
Low / Near-Vacuum
Efficiency (COP)
1.30 W/W
1.50 W/W
Gas Charge Weight
Moderate (~120g)
Low (~50g)
Professional Replacement Cross-Reference
Finding a suitable replacement requires matching the BTU/h capacity and the displacement as closely as possible to maintain the refrigerator’s original duty cycle.
ACC / Cubigel: GL70AA (Robust European alternative)
GMCC: PE75H1C (Slightly higher displacement, very reliable)
Secop (Danfoss): PL50F (Compact design for limited spaces)
Tecumseh: FFI6HAK (Standard American replacement)
5 Compressor Replacements (R600a – Different Gas): Note: Converting from R134a to R600a requires a complete system flush, oil replacement, and potentially a capillary tube adjustment.
TEE: NTU170MT
Cubigel: HMK12AA
Secop: HTK12AA
Huayi: HYB12MHU
Jiaxipera: NT1114Y
Field Engineering Advice and Notices
Vacuum Standards: Because R134a systems use POE oil, they are highly sensitive to moisture. A deep vacuum of at least 500 microns is mandatory. Failure to achieve this will lead to acid formation, which destroys the motor windings over time.
Thermal Protection: If the compressor “clicks” off frequently, ensure the condenser coils are clean. Static-cooled compressors like the HYE69Y63 rely on natural convection; dust buildup can cause the internal thermal protector to trip prematurely.
Start Components: Always replace the PTC relay and the overload protector when installing a new compressor. A fatigued relay can cause the start winding to stay energized too long, leading to a catastrophic burnout of the new unit.
Charging by Weight: For R134a, always charge using a digital scale to the exact weight specified on the refrigerator’s nameplate. Charging by “pressure feel” often leads to overcharging, which increases the stress on the 1/5 HP motor.
Conclusion and Practical Benefits
The Huayi HYE69Y63 is a resilient, mid-range compressor that provides a stable cooling solution for millions of households worldwide. For the engineer, it represents a standard “plug-and-play” solution for a wide variety of refrigeration brands. Its dual-frequency capability and high copper-content windings make it an exceptionally forgiving unit in regions where power grid stability may fluctuate.
Huayi HYE69Y63 Compressor 1/5 HP R134a LBP mbsmpro
Focus keyphrase: Huayi HYB60MGU Compressor 1/7 HP R600a LBP Technical Specifications Wiring Diagram and Professional Replacement Guide for Domestic Refrigeration Systems
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Meta Description: Technical datasheet for the Huayi HYB60MGU compressor. Explore its 1/7 HP capacity, R600a efficiency, electrical wiring schemas, and professional cross-reference replacements.
Excerpt: The Huayi HYB60MGU is a high-efficiency hermetic reciprocating compressor specifically engineered for Low Back Pressure (LBP) applications. Operating on the eco-friendly R600a refrigerant, this 1/7 HP unit is a primary component in modern household refrigerators. This guide provides an in-depth technical analysis, electrical wiring configurations, and reliable replacement alternatives for field engineers.
The Engineering Behind the Huayi HYB60MGU: A Technical Standard in R600a Cooling
In the contemporary landscape of domestic refrigeration, the Huayi HYB60MGU represents a cornerstone of energy-efficient design. As a professional who has spent years troubleshooting and installing these units, it is clear that Huayi has optimized the HYB series to meet the rigorous European and international standards for low-temperature performance.
This compressor is a hermetic reciprocating type, designed for Low Back Pressure (LBP) cycles. Its integration of R600a (isobutane) not only aligns with global environmental mandates but also provides superior thermodynamic efficiency compared to legacy R134a systems. For technicians, understanding the mechanical and electrical nuances of the HYB60MGU is essential for ensuring system longevity.
Technical Data Sheet: Huayi HYB60MGU
Feature
Specification
Model
HYB60MGU
Utilisation (mbp/hbp/lbp)
LBP (Low Back Pressure)
Domaine (Freezing/Cooling)
Domestic Refrigerators / Freezers
Oil Type and Quantity
Mineral Oil / 180 ml
Horsepower (HP)
1/7 HP
Refrigerant Type
R600a (Isobutane)
Power Supply
220-240VAC / 50Hz / 1 Phase
Cooling Capacity BTU
375 BTU/h (approx. 110 Watts)
Motor Type
RSIR (Resistive Start – Inductive Run)
Displacement
6.0 cm³
Winding Material
High-Grade Copper
Pression Charge
0.5 to 1.2 Bar (Standard LBP operation)
Capillary Recommendation
0.026″ – 0.028″ ID (Varies by cabinet)
Application Range
-35°C to -10°C
Cooling System
Static (Natural convection)
Commercial Classification
Residential / Household
Amperage (Running)
0.55 A – 0.7 A
LRA (Locked Rotor Amperage)
4.8 A
Type of Relay
PTC (Positive Temperature Coefficient)
Capacitor Requirement
None (RSIR Configuration)
Electrical Wiring Schema (RSIR Configuration)
The terminal housing of the Huayi HYB60MGU follows a standard triangular pin configuration which is critical for proper startup and protection.
Schema Description:
Common (C): The apex pin. This pin connects to the Thermal Overload Protector (OLP), which monitors the motor temperature and current draw.
Start (S): The pin usually on the right side. It is momentarily energized by the PTC relay to initiate rotation.
Main/Run (M): The pin on the left side. This winding remains energized throughout the operation of the compressor.
Wiring Logic: Line (Hot) -> Overload Protector -> Common Pin Neutral -> PTC Relay -> Main Pin & Start Pin
Engineering Note: Always verify the resistance between C-S and C-M. The sum of these two measurements should roughly equal the resistance across S-M. Any significant deviation indicates a winding fault.
Comparative Efficiency: R600a vs. R134a Models
When evaluating the HYB60MGU, it is helpful to compare it against similarly rated R134a compressors to understand the benefits of the modern R600a cycle.
Metric
Huayi HYB60MGU (R600a)
Standard 1/7 HP (R134a)
Operating Pressure
Low / Vacuum
High Positive
Displacement
6.0 cm³
4.5 cm³
Energy Consumption
Low (High COP)
Moderate
Environment
GWP < 3 (Eco-friendly)
GWP 1430 (Global Warming)
Professional Replacement Cross-Reference
In repair scenarios where the exact Huayi model is unavailable, these alternatives provide the same cooling capacity and displacement.
5 Replacements in R600a (Same Gas):
Embraco: EMT45HDR (High-reliability alternative)
Secop (Danfoss): TLES5.7KK.3 (Common European replacement)
Jiaxipera: T1112Y (Found in many Beko/Haier units)
Donper: A60CY
Wanbao: ETA60
5 Replacements in R134a (Conversion Required): Note: Converting from R600a to R134a requires a full system flush and capillary resizing.
Zem: GL60AA
Embraco: EMI 45HER
Secop: TLS5F
Huayi: B30H
Cubigel: GL60AA
Field Engineering Advice and Notices
Vacuuming Procedure: Because R600a systems operate at very low pressures, moisture is a catastrophic contaminant. Always pull a vacuum down to at least 200 microns before charging.
Charging by Weight: R600a is highly sensitive to overcharging. Always use a digital scale and charge precisely to the manufacturer’s specification (usually 40-60 grams). Do not charge by pressure.
Flammability Safety: R600a is isobutane. Ensure no open flames are nearby during charging or discharging. Use “Lokring” cold connections if you are not in a controlled, ventilated environment for brazing.
Overload Protection: If the compressor “clicks” but fails to start, check the PTC relay first. These components are prone to cracking due to heat cycles.
Conclusion and Professional Benefit
The Huayi HYB60MGU is a resilient unit that, when maintained correctly, offers years of silent and efficient operation. Its low running amperage makes it an ideal choice for off-grid or solar-powered refrigeration setups where energy conservation is paramount. For the service technician, its standard footprint and predictable electrical behavior make it a preferred model in the field.
Huayi HYB60MGU Compressor 1/7 HP R600a LBP mbsmpro
Focus keyphrase: GMCC PE75H1C Compressor 1/4 HP R134a LBP Technical Specifications Wiring Diagram and Replacement Cross-Reference Guide
SEO title: Mbsmpro.com, Compressor, GMCC, PE75H1C, 1/4 hp, R134a, 185 W, 1.2 A, 1Ph 220-240V 50Hz, LBP, RSIR, -35°C to -10°C, freezing
Meta description: Professional technical analysis of the GMCC PE75H1C compressor. High-efficiency 1/4 HP LBP unit for R134a refrigeration. View wiring schemas, performance tables, and compatible replacements.
Excerpt: The GMCC PE75H1C is a robust hermetic reciprocating compressor engineered for low back pressure applications using R134a refrigerant. Operating at 220-240V 50Hz, this 1/4 HP motor provides a cooling capacity of approximately 185W. This article provides technical datasheets, electrical wiring schemas, and professional cross-reference guides for global refrigeration maintenance and engineering.
Engineering Excellence: The GMCC PE75H1C Hermetic Compressor for R134a Systems
In the world of thermal management and domestic refrigeration, the GMCC PE75H1C stands as a benchmark for reliability and volumetric efficiency. Manufactured by Anhui Meizhi Compressor Co., Ltd (a Midea Group venture), this unit is a staple in high-performance household refrigerators and chest freezers. As an engineer who has worked extensively on the field, I can attest that the “PE” series represents a balance between compact mechanical design and thermal endurance.
This compressor is designed for Low Back Pressure (LBP) cycles, making it ideal for freezing applications where evaporation temperatures drop significantly below zero. Utilizing R134a, it remains a common choice for technicians servicing existing infrastructure where synthetic oils are standard.
Detailed Technical Specifications
Feature
Specification
Model
PE75H1C
Utilisation (mbp/hbp/lbp)
LBP (Low Back Pressure)
Domaine (Freezing/Cooling)
Freezing / Deep Cold
Oil Type and quantity
POE (Ester Oil) – Approx. 180 ml
Horsepower (HP)
1/4 HP
Refrigerant Type
R134a
Power Supply
220-240V ~ 50Hz / 1 Phase
Cooling Capacity BTU
631 BTU/h (approx. 185W)
Motor Type
RSIR (Resistive Start – Inductive Run)
Displacement
7.5 cm³
Winding Material
High-Grade Copper
Pression Charge
0.8 to 1.3 Bar (Low side)
Capillary
0.031″ or 0.8mm ID
Refrigerator Models
Midea, Toshiba, Samsung, various local brands
Temperature function
-35°C to -10°C
With fan or no
Static Cooling (No fan required)
Commercial or no
Domestic / Light Commercial
Amperage in function
0.9 A to 1.2 A
LRA (Locked Rotor Amps)
11.0 A
Type of relay
PTC Starter
Capacitor or no
No (Standard RSIR)
Electrical Wiring Schema (RSIR Logic)
For field technicians, identifying the terminal pins is critical to prevent accidental motor burnout. The GMCC PE75H1C follows the standard triangular layout:
C (Common): The apex pin. Connected to the line voltage through the internal Thermal Overload Protector.
M (Main/Run): Bottom-right pin. Connected to the Neutral line.
S (Start): Bottom-left pin. Connected via the PTC (Positive Temperature Coefficient) relay.
Operational Logic: Upon startup, the PTC relay allows current to flow to the Start winding. As the PTC heats up, its resistance increases dramatically, effectively cutting off the Start winding once the motor reaches sufficient RPM, leaving only the Main winding energized.
Performance Comparison: GMCC PE75H1C vs. Industry Standards
When comparing the PE75H1C to other compressors in the same class, we look at the Coefficient of Performance (COP) and displacement efficiency.
Metric
GMCC PE75H1C (R134a)
Equivalent R600a Model
Gas Displacement
7.5 cm³
11.2 cm³
Efficiency (W/W)
1.25
1.45
Charge Weight
Standard (120g – 150g)
Low (40g – 60g)
Pressure Delta
Moderate
Low
Professional Replacement Cross-Reference
Choosing the right replacement is vital for maintaining the refrigerator’s original thermal balance.
5 Compressor replacements in same value (R134a):
Zem/ACC: GL90AA
Embraco: EMT6170Z or FFI 7.5HAK
Secop (Danfoss): NL7F
Huayi: AE1380Y
Tecumseh: THB1375YSS
5 Compressor replacements in same value (R600a Conversion): Notice: Conversion requires a full system flush and capillary adjustment.
TEE: NTU170MT
Cubigel: HMK12AA
Secop: HTK12AA
Huayi: HYB12MHU
Jiaxipera: NT1114Y
Engineering Advice and Best Practices
Thermal Protection: The “Thermally Protected” label indicates an internal bimetallic switch. If the compressor stops and feels extremely hot, do not force a restart. Let it cool for 30 minutes. Check the condenser coils for dust; poor airflow is the primary killer of the PE75H1C.
Oil Compatibility: This unit uses POE (Polyolester) oil. Never mix mineral oil (MO) with this system. If you are retrofitting, ensure the system is flushed with nitrogen to remove moisture, as POE oil is highly hygroscopic.
Vacuum Standards: For R134a systems, reaching a vacuum of at least 500 microns is non-negotiable. Residual moisture reacts with R134a and POE oil to create acid, which will eventually dissolve the copper windings.
Startup Amperage: If the compressor draws high amperage (above 5A) and trips the protector, first replace the PTC relay. These components degrade over time and are a common point of failure before the motor itself fails.
Benefits of the GMCC PE75H1C
The primary benefit of this model is its durability in tropical climates. The motor is wound with high-quality copper that resists heat better than aluminum alternatives. Its compact footprint also makes it versatile for a wide range of refrigerator brands, simplifying inventory for HVAC professionals.
Focus Keyphrase: TEE NTU 170 MT Compressor 1/4 HP R600a Low Back Pressure Technical Specifications and Replacement Guide
SEO Title: Mbsmpro.com, Compressor, NTU 170 MT, 1/4 hp, TEE, Cooling, R600a, 204 W, 0.9 A, 1Ph 220-240V 50Hz, LBP, RSIR, -35°C to -10°C
Meta Description: Technical analysis of the TEE NTU 170 MT compressor. Discover 1/4 HP power specs, R600a efficiency, LBP cooling capacity, wiring diagrams, and cross-reference replacement charts.
Slug: compressor-tee-ntu170mt-r600a-1-4-hp-specs
Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, TEE, Turk Elektrik, NTU 170 MT, R600a, 1/4 HP Compressor, LBP, Refrigerator Repair, HVAC Engineering, EMT2121U, HTK12AA, HMK12AA, NT1114Y, HYB12MHU, GL90AA, FFI7.5HAK, NL7F
Excerpt: The TEE NTU 170 MT is a high-efficiency hermetic reciprocating compressor designed for low back pressure applications using R600a refrigerant. Known for its reliability in household refrigeration, this unit operates at 220-240V 50Hz. This article explores its technical specs, cooling capacity, and suitable replacements for HVAC technicians and engineers worldwide.
The Engineering Excellence of the TEE NTU 170 MT: A Deep Dive into R600a Refrigeration
In the evolving world of domestic refrigeration, efficiency and environmental impact are the primary drivers of innovation. The TEE NTU 170 MT, manufactured by Turk Elektrik, stands as a testament to these principles. As a Low Back Pressure (LBP) compressor optimized for R600a (isobutane), this model has become a staple in modern household refrigerators and freezers across Europe and the Middle East.
Understanding the NTU 170 MT Architecture
The NTU 170 MT is engineered to handle the unique thermodynamic properties of R600a. Unlike older R134a systems, R600a operates at lower pressures but requires a larger displacement to achieve comparable cooling capacities. This compressor utilizes a robust motor designed for RSIR (Resistive Start – Inductive Run) operation, ensuring a reliable start even under varying voltage conditions typically found in domestic environments.
The “MT” series is specifically calibrated for high-performance cooling while maintaining a low noise floor. With a Locked Rotor Amperage (LRA) of 14A, it demonstrates significant starting torque, which is essential for overcoming the initial pressures of the refrigeration cycle after a defrost period.
Technical Specification Table
Feature
Specification
Model
NTU 170 MT
Utilisation
LBP (Low Back Pressure)
Domaine
Freezing / Deep Cooling
Oil Type and Quantity
Mineral Oil (approx. 180 ml)
Horsepower (HP)
1/4 HP
Refrigerant Type
R600a (Isobutane)
Power Supply
220-240VAC / 50Hz / 1Ph
Cooling Capacity BTU
~700 BTU/h (at -23.3°C Evaporating Temp)
Motor Type
RSIR
Displacement
11.20 cc
Winding Material
High-Grade Copper
Pression Charge
0.5 to 1.2 Bar (Low side depending on load)
Capillary Recommendation
0.031″ ID x 3 meters (approximate)
Temperature Function
-35°C to -10°C
Cooling System
Static (No fan required for compressor)
Commercial Class
Domestic / Light Commercial
Amperage (FLA)
0.8 A – 1.0 A
LRA (Locked Rotor)
14 A
Relay Type
PTC Starter
Capacitor
Not required (RSIR), Optional Run Cap for CSIR conversion
Electrical Wiring Schema (RSIR Configuration)
For field technicians, understanding the terminal configuration is vital. The TEE NTU 170 MT follows the standard triangular pin layout:
Common (C): Top pin (typically connected to the overload protector).
Start (S): Right pin (connected to the PTC relay for starting).
Main/Run (M): Left pin (connected to the neutral line).
Performance Comparison: R600a vs. R134a Equivalents
When comparing the NTU 170 MT to R134a units of similar horsepower, several differences emerge. The R600a model offers a superior Coefficient of Performance (COP).
Metric
TEE NTU 170 MT (R600a)
Equivalent R134a Model (e.g., GL90AA)
Efficiency (COP)
1.45 – 1.55 W/W
1.20 – 1.35 W/W
Operating Pressure
Low / Vacuum
High
Eco-Impact
GWP 3 (Low)
GWP 1430 (High)
Noise Level
Very Low
Moderate
Compatibility and Replacement Guide
Finding a direct replacement requires matching the displacement and the LBP characteristic. Below are the recommended alternatives for the NTU 170 MT.
Top 5 Replacements (R600a – Same Gas):
Embraco: EMT2121U
Secop (Danfoss): HTK12AA
ACC / Cubigel: HMK12AA
Jiaxipera: NT1114Y
Huayi: HYB12MHU
Top 5 Replacements (R134a – Conversion Required): Note: Converting from R600a to R134a requires a full system flush, capillary adjustment, and oil compatibility check.
Zem: GL90AA
Embraco: FFI 7.5HAK
Secop: TLES7.5KK.3
Tecumseh: THB1375YSS
Carlyle: S26SC
Engineering Notices and Maintenance Tips
Vacuuming Procedure: Due to the hygroscopic nature of the systems and the low pressures of R600a, a deep vacuum (minimum 200 microns) is mandatory. R600a systems are highly sensitive to non-condensables.
Charging Safety: R600a is flammable. Always ensure the work area is well-ventilated. Use a dedicated electronic scale, as the charge weight is significantly lower than R134a (often only 40-60 grams).
Filter Drier: Always replace the filter drier with one specifically labeled for R600a (XH-9 or equivalent) during any compressor swap.
Capillary Blockage: Because R600a operates at lower discharge temperatures, carbonization is rare, but moisture-related ice blockages are common if the system is not perfectly dry.
Benefits for the End-User
Using a TEE NTU 170 MT ensures the refrigerator operates with minimal energy consumption. For the homeowner, this translates to lower electricity bills and a quieter kitchen environment. For the technician, the wide availability of parts for the TEE/Arçelik ecosystem makes it a preferred choice for long-term maintenance.
Focus Keyphrase: Konor GPY16AF R134a Compressor Technical Specifications and Professional Replacement Guide
SEO Title: Mbsmpro.com, Compressor, Konor, GPY16AF, 1/2 HP, R134a, LBP, 220-240V 50Hz, Freezing, Technical Data
Meta Description: Explore the full technical breakdown of the Konor GPY16AF compressor. This 1/2 HP R134a unit is ideal for LBP freezing applications. Includes specs, wiring, and cross-reference.
Excerpt: The Konor GPY16AF is a robust hermetic reciprocating compressor engineered for low back pressure applications using R134a refrigerant. With a displacement of 16.2 cm³, this 1/2 HP unit is a staple in commercial freezers and large refrigerators. This guide provides detailed technical data, wiring diagrams, and professional cross-reference options for field technicians.
The refrigeration industry relies on precision and durability, and the Konor GPY series stands out as a high-performance solution for low-temperature requirements. Specifically, the GPY16AF model is a hermetic reciprocating compressor designed to meet the rigorous demands of deep-freezing units. Utilizing R134a refrigerant, this compressor balances thermal efficiency with mechanical reliability, making it a preferred choice for large-capacity domestic appliances and light commercial units.
Technical Specification Table
Feature
Specification
Model
GPY16AF
Utilisation
LBP (Low Back Pressure)
Domaine
Freezing / Deep Cold Storage
Oil Type and Quantity
POE Oil / 350 ml
Horsepower (HP)
1/2 HP
Refrigerant Type
R134a
Power Supply
220-240V / 50Hz / 1 Phase
Cooling Capacity BTU
Approximately 1540 BTU/h (at -23.3°C ASHRAE)
Motor Type
CSIR (Capacitor Start – Induction Run)
Displacement
16.2 cm³
Winding Material
High-Grade Copper
Pressure Charge
Suction: 0.5 – 5 PSI (Normal LBP range)
Capillary Recommendation
0.042″ x 10ft (Variable per load)
Application Units
Large Chest Freezers, Vertical Freezers
Temperature Function
-35°C to -15°C
Fan Requirement
Static or Forced Air (Fan recommended for high ambient)
Commercial Use
Yes, Light Commercial / Domestic
Amperage (FLA)
2.5 A – 2.8 A
LRA (Locked Rotor Amps)
17 A
Type of Relay
Potential or Electromagnetic Relay
Capacitor Requirement
Starting Capacitor (approx. 60-80 µF)
Engineering Perspective: Performance Analysis
From a field worker’s perspective, the GPY16AF is recognized for its high volumetric efficiency. The 16.2 cm³ displacement allows for rapid pulldown times in large evaporation systems. Unlike smaller residential compressors, this unit features reinforced copper windings that handle the high torque required during the startup phase of a heavy refrigeration cycle.
When comparing the Konor GPY16AF to other market leaders, we notice a distinct advantage in its thermal management. The internal motor protection is calibrated to prevent burnout during voltage fluctuations, a common issue in many regions.
Cross-Reference and Replacement Models
Finding an exact match for a compressor in the field is not always possible. Below are professional alternatives categorized by refrigerant type.
Table: Top 5 Replacements (Same Refrigerant – R134a)
Brand
Model
HP
Displacement
Embraco
FFI12HBX
1/2 HP
11.14 cm³
Danfoss/Secop
SC15G
1/2 HP
15.28 cm³
Tecumseh
AE2415Y
1/2 HP
12.50 cm³
Kulthorn
AE7440Y
1/2 HP
14.50 cm³
Huayi
HYE15YG
1/2 HP
15.00 cm³
Table: Top 5 Replacements (Alternative Refrigerant – R404a/R600a)
Vacuum Procedure: Since the GPY16AF uses POE oil, it is extremely hygroscopic. A deep vacuum of at least 500 microns is mandatory to prevent acid formation within the system.
Filter Drier Replacement: Never reuse a filter drier. When installing this 1/2 HP unit, ensure a high-capacity XH-9 molecular sieve drier is used to handle the R134a molecular structure.
Oil Management: If the system suffered a motor burnout previously, perform a flush. POE oil will trap contaminants more aggressively than mineral oil.
Capillary Sizing: Ensure the capillary tube is not restricted. A 1/2 HP compressor generates significant head pressure; a restricted capillary will lead to premature valve failure.
Professional Benefits of the Konor GPY16AF
Energy Efficiency: Optimized for lower power consumption despite high torque.
Durability: Built to withstand continuous operation in tropical climates.
Notice: Always verify the starting capacitor value on the specific unit label before replacement. Using an undersized capacitor can lead to starting failures, while an oversized one may overheat the start winding.
In the demanding world of domestic and light commercial refrigeration, reliability and heat-exchange efficiency are the primary benchmarks for selecting a hermetic compressor. The Excellent Compressor GS91AZ has established itself as a robust solution for engineers and technicians looking for a durable replacement in various cooling appliances. Designed specifically for Low Back Pressure (LBP) applications, this reciprocating unit balances power and energy savings, making it a staple in the high-performance cooling sector.
The core strength of the GS91AZ lies in its internal construction. Unlike cheaper alternatives that might use aluminum-clad wiring, this model is built with 100% high-grade copper windings. This structural choice ensures superior thermal conductivity and a longer lifespan, significantly reducing the risk of winding burnout during prolonged operation or high ambient temperature conditions. With a displacement of 9.1 cc, it provides the necessary torque to maintain stable pressures in medium-to-large-sized household refrigerators and vertical freezers.
Technical Specifications and Performance Data
The following table provides a detailed breakdown of the characteristic features of the GS91AZ model, ensuring field workers have the precise data required for installation and repair.
Parameter
Technical Specification
Model
GS91AZ
Utilization (LBP/MBP/HBP)
LBP (Low Back Pressure)
Primary Domain
Freezing and Deep Cooling
Oil Type and Quantity
POE (Polyolester) / 280 ml – 300 ml
Horsepower (HP)
1/3 HP
Refrigerant Type
R134a
Power Supply
220V – 240V / 50Hz
Cooling Capacity (BTU/h)
Approx. 780 – 820 BTU/h (at ASHRAE LBP)
Motor Type
RSIR (Resistance Start – Induction Run)
Displacement
9.1 cc
Winding Material
100% High-Conductivity Copper
Pressure Charge
Suction: 0.5 to 1.5 bar (Application Dependent)
Capillary Tube Size
0.036″ to 0.042″ (Length varies by appliance)
Compatible Appliances
Large 2-door Fridges, Chest Freezers, Water Coolers
Function Temperature
-35°C to -10°C
Cooling Method
Static or Fan Assisted (depending on housing)
Market Segment
Professional / Light Commercial
Operational Amperage
1.1 A to 1.4 A
LRA (Locked Rotor Amps)
14.5 A to 16 A
Starting Relay Type
PTC Relay or Current Relay
Capacitor Requirement
Usually none (RSIR), optional start cap for high torque
Compressor Replacement Cross-Reference
Choosing the right replacement is critical for system balance. Below are verified equivalents based on displacement and gas type.
5 Compressor Replacements (Same R134a Gas):
Secop (Danfoss): GL90AA (9.09 cc)
Embraco: FFI10HBK / FF10HBK
ZMC: GM90AZ
Tecumseh: AE1390Y
Wanbao / Huayi: QD91
5 Compressor Replacements (Alternative Refrigerants – System Flush Required):
R600a Equivalent: NLE9KK (Secop)
R600a Equivalent: EMT2125GK (Embraco)
R290 Equivalent: NEK2134U (Embraco – High Pressure adjustment required)
R1234yf Equivalent: YF9.0GY
R404A Equivalent: ML90FB (LBP specific conversion)
Comparative Analysis: GS91AZ vs. Industry Standards
To understand the positioning of the GS91AZ, it is essential to compare it with leading industry models of similar displacement.
Model
Displacement
Refrigerant
COP
Typical HP
Excellent GS91AZ
9.1 cc
R134a
1.25
1/3 HP
Secop GL90AA
9.09 cc
R134a
1.32
1/4 HP+
Embraco FF8.5HBK
7.95 cc
R134a
1.28
1/4 HP
ZMC GM90AZ
9.0 cc
R134a
1.20
1/3 HP
While the GS91AZ maintains a slightly lower COP (Coefficient of Performance) of 1.25 compared to some high-end Secop models, it offers a more aggressive displacement-to-price-performance ratio in the 1/3 HP segment. This makes it an ideal choice for regions with fluctuating voltages where rugged copper windings provide a crucial safety margin against electrical stress.
Electrical Schema and Wiring Configuration
For a standard RSIR (Resistance Start Induction Run) setup, the electrical connection is straightforward but requires precision. The compressor features three terminals: Common (C), Start (S), and Run (R).
Protector (Overload): Connected directly to the Common (C) terminal.
Relay (PTC/Current): Plugged onto the Run (R) and Start (S) terminals
Power Input:
Line (L) goes to the Thermal Overload Protector.
Neutral (N) goes to the main terminal of the Relay (Run side).
Note: In cases where a start capacitor is required for high-torque starts, it is wired in series with the start terminal through the relay contacts.
Installation Advice and Best Practices
Vacuuming: Always perform a deep vacuum (at least 500 microns) to remove moisture. R134a systems are highly sensitive to humidity, which can lead to acid formation in the POE oil.
Oil Maintenance: If a system has suffered a burnout, the condenser and evaporator must be flushed. Residual acid will contaminate the fresh POE oil in the new GS91AZ, leading to premature failure.
Filter Drier: Never reuse a filter drier. Always install a new XH-9 or equivalent drier to protect the 9.1 cc displacement valve plate from debris.
Focus Keyphrase: Excellent Compressor GS91AZ 1/3 HP R134a 9.1cc High Performance Refrigeration Unit
SEO Title: Mbsm.pro, Compressor, GS91AZ, 1/3 HP, R134a, 9.1 cc, 220V 50Hz, LBP, High Reliability
Meta Description: Discover the technical specifications of the Excellent Compressor GS91AZ. A 1/3 HP, R134a reciprocating unit with 9.1cc displacement and copper windings for superior cooling.
Excerpt: The Excellent Compressor GS91AZ has established itself as a robust solution for engineers and technicians looking for a durable replacement in various cooling appliances. Designed specifically for Low Back Pressure (LBP) applications, this reciprocating unit balances power and energy savings, making it a staple in the high-performance refrigeration and cooling sector.
Excellent Compressor GS91AZ 1/3 HP R134a 9.1cc mbsmpro
The codes L55AV and QD59H refer to specific types of refrigerator compressors utilized in household and small-scale commercial cooling systems. Below is a detailed breakdown of the manufacturing materials and technical specifications for each model:
1. L55AV Compressor
The L55AV is a compressor manufactured by Cubigel (currently part of the Huayi Group). It is specifically designed to operate with the legacy R12 refrigerant (or its retrofitted substitutes) and features an approximate capacity of 1/6 HP.
Primary Manufacturing Materials:
Outer Shell (Housing): Constructed from deep-drawn carbon steel, which is coated with a specialized layer to resist rust and harsh environmental conditions.
Electric Motor: Comprised of a core made from silicon steel laminations and windings of high-purity copper. (While some modern “economy” versions may use aluminum, copper remains the standard for original high-performance models).
Pumping Mechanism (Cylinder and Piston): Typically manufactured from corrosion-resistant Cast Iron to ensure durability against friction and extreme heat.
Crankshaft: Made of alloy steel or heat-treated cast iron for structural integrity.
Valves: Fabricated from high-flexibility Spring Steel to withstand thousands of rapid opening and closing cycles.
2. QD59H Compressor
The QD59H is a widely distributed compressor manufactured by Huayi and other global producers. It is designed primarily for R134a refrigerant and maintains a capacity of approximately 1/6 HP.
Manufacturing Materials and Technical Features:
Internal Components: Largely similar to the L55AV, utilizing cast iron for the piston/cylinder assembly and heavy-duty steel for the external shell.
Motor Windings: Predominantly copper to guarantee high energy transmission efficiency and optimized power consumption.
Suspension System: Features internal steel springs designed to absorb operational vibrations and minimize noise levels.
Specialized Materials: Some technical reports for modern QD59H iterations indicate the use of ceramic balls in specific bearing types to reduce friction and extend service life, alongside gaskets made of advanced polymers.
Material Comparison Summary Table
Component
Common Materials (L55AV & QD59H)
Outer Shell
Coated Carbon Steel
Motor Windings
Pure Copper (Rarely Aluminum)
Piston & Cylinder
Cast Iron
Valves
Stainless Steel / Spring Steel
Refrigerant Gas
R12 (L55AV) / R134a (QD59H)
Insulation
Mineral/Synthetic Oil and Paper/Plastic motor insulators
Focus Keyphrase: L55AV and QD59H Refrigerator Compressor Technical Specifications and Performance Comparison
Meta Description: Expert technical guide for L55AV and QD59H compressors. Discover cooling capacity, displacement, 1/6 HP performance, and R12 to R134a conversion insights for HVAC engineers.
Excerpt: The L55AV and QD59H are cornerstone compressors in the domestic refrigeration industry, both rated at 1/6 HP. While the L55AV traditionally operates with R12, the QD59H is the modern R134a standard. This article provides deep technical data, electrical wiring diagrams, and professional comparison tables for field technicians and refrigeration engineers seeking reliable data.
In the demanding field of refrigeration maintenance and engineering, the reliability of a compressor defines the lifespan of the appliance. Today, we analyze two workhorses of the industry: the L55AV and the QD59H. As an engineer who has spent years in the workshop and on-site, I can testify that understanding the subtle metallurgical and chemical differences between these two models is the difference between a successful repair and a repetitive failure.
The Technical Evolution: L55AV and QD59H
The L55AV (often associated with brands like Cubigel, Zem, or Huayi) is a classic reciprocating compressor. Historically, it was the go-to choice for units using R12 refrigerant. On the other hand, the QD59H represents the modern shift, optimized for R134a. Both are classified as LBP (Low Back Pressure) units, typically found in household refrigerators and medium-sized chest freezers.
Technical Specifications Table
Characteristic
L55AV Model
QD59H Model
Horsepower (HP)
1/6 HP
1/6 HP
Displacement
5.44 cm³
5.9 cm³
Refrigerant Type
R12 / R406a
R134a
Cooling Capacity
130W – 145W
160W – 165W
Voltage Range
220-240V / 50Hz
220-240V / 50Hz
Motor Type
RSIR (Relay Start)
RSIR / RSCR
Evaporating Temp
-35°C to -10°C
-35°C to -15°C
Oil Type
Mineral
POE / Synthetic
Engineering Comparison: Displacement vs. Efficiency
When comparing these two, a critical factor for the field worker is the Displacement. The QD59H offers a slightly larger displacement at 5.9 cm³ compared to the 5.44 cm³ of the L55AV. This allows the QD59H to achieve a higher cooling capacity (approx. 160W) while maintaining a standard 1/6 HP footprint.
Value Comparison with Similar Models
Model
HP Rating
Gas Type
Capacity (W)
Efficiency (COP)
L55AV
1/6
R12
145
1.15
QD59H
1/6
R134a
165
1.22
GL60AA
1/6
R134a
155
1.20
FN66Q
1/6
R12
140
1.10
Electrical Schema and Wiring Configuration
For the electric setup, these models generally utilize the RSIR (Resistance Start Induction Run) system. Below is the typical connection logic:
Common (C): Top pin of the compressor triangle.
Start (S): Connected to the PTC starter or electromagnetic relay.
Run (R): Main power line connected directly to the winding.
Note for Technicians: Always verify the resistance between C-S and C-R. The Start winding (C-S) will always show a higher resistance than the Run winding (C-R). If you are replacing an L55AV with a modern QD59H, ensure your Overload Protector (OLP) is matched to the 1.1A to 1.3A running current of the new unit.
Field Worker’s Advice: Professional Installation Tips
System Flushing: If you are replacing an old L55AV (R12) with a QD59H (R134a), you must flush the evaporator and condenser with R141b. R12 systems use mineral oil, which is incompatible with the POE oil found in R134a compressors. Mixing them creates an acidic sludge that will choke your capillary tube.
Vacuum Procedure: Never settle for a “short vacuum.” Because the QD59H uses synthetic oil, it is highly hygroscopic (absorbs moisture). A minimum vacuum of 500 microns is recommended to ensure system longevity.
Filter Drier: Always install a new XH-9 molecular sieve filter drier when switching to R134a.
Benefits of the QD59H over Older Models
Lower Noise Profile: The internal suspension of the QD59H is designed with high-tension springs that reduce “chatter” during start-stop cycles.
Thermal Stability: The windings in the QD59H are often insulated with higher-grade polymers that resist burnout during voltage fluctuations common in 220V grids.
Technical Catalogs and Resources
For engineers requiring the full manufacturer curves and torque data, you can refer to the following official documentation (Ensure you are using a secure browser):
Final Notice: When working on these projects, always verify the LRA (Locked Rotor Amps) on the nameplate. For a 1/6 HP unit like the QD59H, it should typically range between 6A and 8A. If your reading is higher, check for mechanical binding or a faulty start capacitor. Be smart, be an engineer, and prioritize system cleanliness above all else.
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Complete Compressor Specifications: 5 Major Brands Compared
Meta Description
Technical specifications for Tecumseh, Daikin, Matsushita, Hitachi, and Toshiba compressors. Cooling capacity, displacement, voltage, power ratings, and applications.
Understanding refrigeration compressor specifications is essential for proper HVAC system selection and maintenance. This comprehensive guide covers five major compressor brands—Tecumseh, Daikin, Matsushita, Hitachi, and Toshiba—with detailed technical data on cooling capacity, displacement, voltage requirements, and applications.
ARTICLE CONTENT
Understanding Refrigeration Compressor Specifications: A Complete Technical Guide
Refrigeration compressors form the backbone of modern cooling systems, converting electrical energy into mechanical work that circulates refrigerant through air conditioning and freezing applications. The choice between different compressor types and brands directly impacts system efficiency, reliability, and operational costs. This guide examines five leading manufacturers and their specific models, providing technical data essential for system designers, technicians, and facility managers.
SECTION 1: THE THREE MAIN COMPRESSOR ARCHITECTURES
1.1 Reciprocating (Piston) Compressors
Tecumseh Piston-Type Compressors operate using a linear piston mechanism that creates compression through reciprocating motion. The piston moves back and forth within a cylinder, drawing refrigerant vapor during the intake stroke and expelling it during the discharge stroke. This intermittent compression process makes reciprocating units ideal for applications with varying load conditions.
Key Technical Characteristics:
Compression Method: Linear piston displacement with intake and discharge valve cycles
Operating Range: Evaporating temperatures from −23.3°C to 12.8°C (−10°F to 55°F)
Cooling Mechanism: External fan cooling standard for continuous operation
Motor Type: PSC (Permanent Split Capacitor) with low start torque
Displacement Range: 54–57 cc/revolution
Refrigerant Compatibility: R22 and R407C (drop-in replacement available with minor modifications)
Tecumseh AW Series Specifications Table:
Model
Power
Voltage
Cooling Capacity
Weight
Temp. Range
AW5524E
2.5 HP
220V
20,000 BTU
20 kg
−23°C to +13°C
AW5528EKGb
2.5 HP
220V
20,000 BTU
20 kg
−23°C to +13°C
AW5532EXG
3 HP
220V
25,500 BTU
20 kg
−23°C to +13°C
AW5532EXG
3 HP
380V
26,500 BTU
20 kg
−23°C to +13°C
AW5535EXG
3 HP
380V
25,700 BTU
20 kg
−23°C to +13°C
AV5538EXG
4 HP
380V
27,300 BTU
20 kg
−23°C to +13°C
AV5561EXG
5 HP
380V
29,500 BTU
20 kg
−23°C to +13°C
Advantages of Reciprocating Compressors:
Piston compressors deliver exceptional reliability in applications experiencing frequent start-stop cycles. Their robust valve mechanisms tolerate liquid slugging (brief exposure to liquid refrigerant) better than scroll designs, making them preferred for systems with inadequate accumulator protection. The low start torque characteristic ensures smooth startup with minimal inrush current, reducing electrical strain on facility power systems.
Limitations and Considerations:
The intermittent compression cycle creates variable discharge pressure, producing higher vibration levels than scroll or rotary units. Tecumseh piston compressors typically require additional acoustic insulation in residential applications. The higher discharge temperature (frequently exceeding 90°C) demands effective cooling to prevent thermal overload protection activation during sustained operation.
1.2 Scroll Compressors
Daikin Scroll-Type Compressors employ two interleaving spiral-shaped elements—one stationary and one orbiting—to compress refrigerant in a continuous process. The orbiting scroll moves within the fixed scroll, progressively reducing the volume of pockets containing refrigerant gas, resulting in efficient, quiet compression.
Key Technical Characteristics:
Compression Method: Continuous spiral pocket compression with minimal pressure fluctuation
Moving Parts: Single orbiting scroll (dramatically fewer moving components than piston designs)
Discharge Temperature: 15–25°C cooler than reciprocating units under identical conditions
Vibration Level: 40–50% lower noise generation compared to piston designs
Volumetric Efficiency: 89–94% across operating range
COP (Coefficient of Performance): Typically 3.0–3.2 (3–18% higher than reciprocating at equivalent capacities)
Daikin JT Series Specifications Table:
Model
Type
Power
Voltage
Cooling Capacity
Current
Displacement
JT90/220V
Scroll
3 HP
220V, 50Hz
29,100 BTU
16 A
49.4 cc/rev
JT90/380V
Scroll
3 HP
380V, 50Hz
29,200 BTU
16 A
49.4 cc/rev
JT95/220V
Scroll
3 HP
220V, 50Hz
30,800 BTU
16 A
49.4 cc/rev
JT95/380V
Scroll
3 HP
380V, 50Hz
31,400 BTU
16 A
49.4 cc/rev
JT125/220V
Scroll
4 HP
220V, 50Hz
35,400 BTU
16 A
65.2 cc/rev
JT125/380V
Scroll
4 HP
380V, 50Hz
40,600 BTU
16 A
65.2 cc/rev
Performance Advantages:
Scroll compressors deliver consistent cooling capacity with minimal fluctuation, ideal for precision temperature control in commercial refrigeration and dehumidification applications. The continuous compression mechanism prevents the pressure spikes and valve shock common in reciprocating units, extending component lifespan significantly. Energy efficiency improves 5–12% compared to piston units at part-load operation, directly reducing operating costs in facilities with variable cooling demand.
Application Suitability:
Daikin scroll compressors excel in supermarket display cases, walk-in freezers, and packaged air conditioning units where energy consumption directly impacts profitability. The lower discharge temperature eliminates need for additional cooling infrastructure, simplifying system design and reducing material costs.
1.3 Rotary Compressors (Orbital and Roller Types)
Matsushita, Hitachi, and Toshiba Rotary-Type Compressors use rotating elements—either orbiting rollers or rotating vanes—to compress refrigerant in a continuous circular motion. Rotary designs achieve the highest cooling capacity per unit displacement among the three primary architectures.
Compression Mechanism Comparison:
Rotary vs. Scroll vs. Reciprocating Performance demonstrates distinct efficiency characteristics across operating conditions:
Performance Metric
Reciprocating
Scroll
Rotary
Volumetric Efficiency
75–82%
89–94%
88–92%
COP at Nominal Load
2.8–3.0
3.0–3.2
2.9–3.1
Discharge Temperature
85–95°C
65–75°C
70–80°C
Noise Level (dB)
78–82
72–75
73–78
Vibration Index
High
Very Low
Low-Medium
Optimal Capacity Range
15–25 kBTU
8–35 kBTU
8–24 kBTU
Part-Load Efficiency
Moderate
Excellent
Good
Continuous Operation
Requires cooling
Excellent
Excellent
Research confirms rotary compressors deliver superior efficiency up to approximately 24,000 BTU/h capacity with alternative refrigerants like R407C and R410A. Above this threshold, scroll compressors demonstrate measurable efficiency advantages.
Matsushita (Panasonic) manufactures rotary compressors for commercial and semi-commercial applications, featuring displacement-based capacity selection.
Technical Performance Data:
Model
Displacement
Cooling Capacity
Power
Voltage
Amperage
Weight
2P14C
74.5 cc/rev
25,500 BTU
—
220V
40 A
40 kg
2P17C
92.6 cc/rev
28,400 BTU
—
220V
40 A
40 kg
2K22C
130.0 cc/rev
44,400 BTU
—
220V
40 A
40 kg
2K32C
177.4 cc/rev
60,700 BTU
—
220V
40 A
40 kg
2V36S
209.5 cc/rev
71,400 BTU
—
220V
30 A
30 kg
2V42S
245.7 cc/rev
83,700 BTU
—
220V
30 A
30 kg
2V47W
285.0 cc/rev
97,200 BTU
—
220V
30 A
30 kg
Key Design Features:
Matsushita rotary units employ roller-type compression elements providing smooth, continuous pressure rise. The high displacement range (74.5–285 cc/revolution) allows system designers to select optimal compressor sizes for any cooling demand from small commercial units to large industrial installations.
Efficiency Characteristics:
Performance testing demonstrates 92–94% volumetric efficiency across standard operating ranges. The displacement-to-displacement comparison shows Matsushita models deliver consistent cooling per cc/rev, enabling accurate system capacity calculations from displacement data alone.
Hitachi rotary compressors represent Japanese engineering excellence, widely deployed in Asian HVAC markets with proven long-term reliability.
Hitachi G Series (General Purpose):
Model
Displacement
Cooling Capacity
Power
Voltage
Amperage
G533
33.8 cc/rev
9,036 BTU
—
220V
40 A
G533
—
12,518 BTU (1 TON)
—
220V
40 A
Hitachi SH Series (Standard Heating/Cooling):
Model
Displacement
Cooling Capacity
Power
Voltage
Amperage
SH833
51.8 cc/rev
12,518 BTU (1 TON)
—
220V
40 A
SHY33
41.7 cc/rev
17,612 BTU
—
220V
40 A
SHW33
35.6 cc/rev
20,425 BTU
—
220V
30 A
SHX33
33.6 cc/rev
19,198 BTU
—
220V
30 A
SHV33
41.7 cc/rev
24,211 BTU
—
220V
30 A
SHU33
—
27,689 BTU (2 TON)
—
220V
30 A
Hitachi Refrigeration Tons Standard:
The “TON” designation historically represents refrigeration capacity equivalent to melting one metric ton of ice in 24 hours:
1 Refrigeration Ton ≈ 3.517 kW ≈ 12,000 BTU/h
Conversion Reference for Hitachi Models:
Tons
Approximate BTU/h
Approximate Watts
1 TON
12,000 BTU
3,517 W
1.5 TON
18,000 BTU
5,275 W
2 TON
24,000 BTU
7,033 W
2.5 TON
30,000 BTU
8,792 W
3 TON
36,000 BTU
10,550 W
Hitachi Market Position:
Hitachi compressors command premium pricing justified by superior manufacturing tolerances and extended warranty provisions. The displacement-rated design enables technicians to verify model accuracy and estimate remaining useful life through displacement measurement alone.
Toshiba rotary compressors dominate Southeast Asian refrigeration markets, featuring robust construction and wide displacement availability.
Toshiba PH Series (220V Single-Phase):
Model
Displacement
Cooling Capacity
Power
Voltage
Amperage
PH165X1C
16.5 cc/rev
15,828 BTU
—
220V
40 A
PH195X2C
19.8 cc/rev
19,558 BTU
—
220V
40 A
PH225X2C
22.4 cc/rev
21,348 BTU
—
220V
40 A
PH260X2C
25.8 cc/rev
26,688 BTU
—
220V
40 A
PH290X2C
28.9 cc/rev
29,372 BTU
—
220V
40 A
PH295X2C
29.2 cc/rev
29,688 BTU
—
220V
40 A
PH310X2C
30.6 cc/rev
31,488 BTU
—
220V
30 A
PH330X2C
32.6 cc/rev
33,088 BTU
—
220V
30 A
PH360X3C
35.5 cc/rev
36,192 BTU
—
220V
30 A
PH420X3C
41.5 cc/rev
42,816 BTU
—
220V
30 A
PH440X3C
43.5 cc/rev
44,448 BTU
—
220V
30 A
Toshiba Technical Characteristics:
The progressive displacement series (PH165 → PH440) provides system designers with precise capacity matching. Each increment adds approximately 3.0–4.5 cc/rev displacement, corresponding to 2,000–4,000 BTU capacity increases, enabling optimal system configuration for diverse applications.
Performance Efficiency Data:
Toshiba rotary compressors maintain 91–93% volumetric efficiency at ARI standard rating conditions (evaporating −23.3°C, condensing 54°C). Continuous operation reliability testing demonstrates 40,000+ hour MTBF (Mean Time Between Failures) under normal maintenance protocols.
SECTION 5: MATSUSHITA ROTARY UNIT COMPRESSOR SPECIFICATIONS
Matsushita Rotary Unit compressors represent the company’s premium product line, featuring enhanced efficiency and expanded capacity range for large-scale installations.
Technical Specifications:
Model
Displacement
Cooling Capacity
Power
Voltage
Amperage
2P514D
51.4 cc/rev
17,548 BTU
—
220V
40 A
2K5210D5
109.0 cc/rev
37,200 BTU
—
220V
40 A
2K5324D5
180.0 cc/rev
61,272 BTU
—
220V
40 A
2K5324D5
180.0 cc/rev
43,872 BTU
—
220V
40 A
2K5314D
177.4 cc/rev
60,192 BTU
—
220V
40 A
2J5350D
209.5 cc/rev
31,632 BTU
—
220V
30 A
2J5438D
265.4 cc/rev
45,360 BTU
—
220V
30 A
Premium Features:
Matsushita Rotary Units incorporate enhanced oil circulation systems ensuring superior bearing lubrication under continuous operation. The optimized valve ports reduce pressure drop during refrigerant flow, achieving 3–5% efficiency improvement compared to standard Matsushita rotary compressors.
Coefficient of Performance (COP) Analysis across compressor types:
Cooling Capacity Range
Most Efficient Type
Typical COP
Comments
8,000–12,000 BTU
Rotary
3.0–3.1
Rotary/scroll equivalent; rotary preferred if cost-effective
12,000–18,000 BTU
Scroll
3.1–3.3
Scroll begins efficiency advantage
18,000–24,000 BTU
Scroll
3.2–3.4
Scroll provides 5–8% higher COP than rotary
24,000–35,000 BTU
Scroll
3.3–3.5
Scroll optimal; rotary less suitable
Variable Load/Intermittent
Reciprocating
2.8–3.0
Piston preferred for duty-cycle tolerance
High-Reliability Industrial
Reciprocating
2.9–3.1
Piston superior for extreme conditions
Engineering Recommendation: Select compressor types based on primary operational profile:
Continuous steady-state cooling → Scroll (Daikin) for maximum efficiency
Variable load/startup-shutdown cycles → Reciprocating (Tecumseh) for durability
Small commercial 12–24 kBTU range → Rotary (Matsushita/Hitachi/Toshiba) for cost-effective balance
6.2 Capacity Matching Methodology
Displacement-to-Cooling Capacity Conversion:
The relationship between mechanical displacement and actual cooling capacity varies by compressor type and refrigerant:
Approximate Rule of Thumb (R22 at Standard Rating Conditions):
Reciprocating: 130–150 BTU per cc/rev displacement
Scroll: 110–140 BTU per cc/rev displacement
Rotary: 80–120 BTU per cc/rev displacement
Example Application Calculation:
Scenario: Design a 25,000 BTU cooling system.
Compressor Type
Required Displacement
Model Selection
Voltage
Weight
Reciprocating
~170 cc/rev
Tecumseh AW5532EXG
220V
20 kg
Scroll
~210 cc/rev
Daikin JT95
220V
—
Rotary
~230 cc/rev
Toshiba PH290X2C
220V
—
SECTION 7: TEMPERATURE RANGE CLASSIFICATIONS & APPLICATIONS
7.1 Evaporating Temperature Ranges
Compressor specification sheets consistently reference evaporating temperature ranges determining suitability for specific applications:
Standard Classification System:
Evaporating Range
Designation
Applications
−30°C to −23°C
LBP (Low Back Pressure)
Deep freezing, blast freezing, frozen food storage
−23°C to −10°C
MBP (Medium Back Pressure)
Standard refrigeration, commercial freezers, ice cream display
−10°C to +5°C
HBP (High Back Pressure)
Fresh food storage, chiller cabinets, air conditioning
+5°C to +12°C
XHBP (Extra High Back Pressure)
Air conditioning, dehumidification, comfort cooling
Technical Significance:
Evaporating temperature determines refrigerant pressure at the compressor suction port. Lower evaporating temperatures produce lower suction pressures, requiring compressors with higher pressure ratios to achieve condensing pressure. The Tecumseh piston compressors (evaporating −23.3°C to +12.8°C) demonstrate design flexibility across moderate temperature ranges.
7.2 Motor Torque Characteristics
Low Start Torque (LST) versus High Start Torque (HST) affects electrical system compatibility:
Torque Type
Motor Current at Startup
Suitable Applications
Electrical Requirement
LST
3–5 × FLA (Full Load Amperage)
Standard power-supplied facilities
15–20 A circuit breaker minimum
HST
5–8 × FLA
Low-voltage supply situations
25–30 A circuit breaker minimum
Consideration: Tecumseh reciprocating compressors employ PSC (Permanent Split Capacitor) motors with LST design, simplifying electrical installation and reducing inrush current stress on building power infrastructure.
SECTION 8: REFRIGERANT SELECTION & SYSTEM INTEGRATION
8.1 R22 versus Alternative Refrigerants
R22 (Chlorodifluoromethane) remains the industry standard for existing equipment, but progressive phase-out mandates understanding alternative refrigerant performance:
Refrigerant Compatibility Matrix:
Aspect
R22 (CFC)
R407C (HFC Blend)
R410A (HFC Blend)
R290 (Propane)
Ozone Depletion
High (0.055)
Zero
Zero
Zero
GWP (Global Warming Potential)
1,810
1,774
2,088
3
Pressure (Condensing 54°C)
19.2 bar
20.8 bar
28.6 bar
18.1 bar
Molecular Weight
120.9 g/mol
86.2 g/mol
72.0 g/mol
44.1 g/mol
Density (Liquid 25°C)
1.194 g/cm³
1.065 g/cm³
0.766 g/cm³
0.58 g/cm³
Viscosity (Oil Compatibility)
Mineral oil
Mineral/POE oil
Ester (POE) oil
Ester (POE) oil
Drop-in Replacement
Reference
Limited (capacity −5–10%)
Not drop-in
Safety concern
System Design Implications:
R407C retrofitting requires sealed system replacement, oil flush, and system evacuation to <500 microns vacuum. Capacity typically decreases 5–10% compared to R22, necessitating larger compressor displacement or higher-capacity alternative models.
R410A systems demand higher-pressure rated components, including compressors, condenser coils, and expansion devices. Existing R22 system components are mechanically incompatible with R410A pressures.
Scroll (Daikin): 72–75 dB @ 1 meter — smoothest operation
Rotary (Matsushita/Hitachi/Toshiba): 73–78 dB @ 1 meter — moderate vibration
Reciprocating (Tecumseh): 78–82 dB @ 1 meter — highest vibration and noise
Installation Implications: Residential applications require scroll or rotary compressors with vibration isolators and sound barriers. Commercial and industrial installations typically accept reciprocating compressor noise with standard mounting.
SECTION 11: CAPACITY CONVERSION REFERENCE TABLE
Quick Reference: Converting Between Common Cooling Capacity Units
BTU/h
Watts (W)
Kilowatts (kW)
Refrigeration Tons (TR)
kcal/h
8,500
2,491
2.49
0.71
2,141
10,236
3,000
3.00
0.85
2,580
12,000
3,517
3.52
1.00
3,024
15,000
4,396
4.40
1.25
3,780
18,000
5,275
5.28
1.50
4,536
20,425
5,987
5.99
1.68
5,152
24,000
7,033
7.03
2.00
6,048
25,500
7,472
7.47
2.14
6,425
29,100
8,526
8.53
2.42
7,344
30,800
9,026
9.03
2.56
7,777
36,000
10,550
10.55
3.00
9,072
Conversion Formula: 1 BTU/h = 0.293 Watts
SECTION 12: FIELD EXPERT RECOMMENDATIONS & BEST PRACTICES
12.1 Installation Best Practices
Compressor Positioning & Orientation:
Mount horizontally or slightly inclined (5–10°) to ensure oil return during operation
Avoid vertical mounting unless designed for that orientation
Provide minimum 30 cm clearance for air circulation around external cooling fins
Model number matches exactly (including letter suffixes indicating refrigerant/voltage/torque type)
Cooling capacity specification in same units (BTU/h, kW, or TR) as system design
Voltage and phase (1PH 220V, 3PH 380V, etc.) match facility electrical supply
Refrigerant type (R22, R407C, etc.) compatible with existing system or justified retrofit plan
Discharge port connections (flange size, thread type, O-ring groove style) match existing tubing
Oil type and quantity specified in compressor documentation
Warranty period and coverage terms documented (typically 12–24 months)
Manufacturer certification (CE-marked for EU compliance, or equivalent regional compliance)
16.2 Common Model Number Decoding
Tecumseh Example: AW5532EXG
A = Hermetic (sealed)
W = Standard enclosure
55 = Displacement series (550 cc/rev class)
32 = Specific displacement (approximately)
EXG = Extended application, R407C compatible, group G motor torque
Daikin Example: JT95BCBV1L
JT = Scroll compressor line
95 = Approximate capacity (95 cc displacement, ~30 kBTU)
BC = Bearing and oil type (BC = standard bearing)
BV = Valve configuration
1L = 220V/50Hz single-phase variant
CONCLUSION: SELECTING THE RIGHT COMPRESSOR FOR YOUR APPLICATION
The refrigeration compressor represents the highest-cost and most critical component in any HVAC or cooling system. Understanding the technical distinctions between reciprocating (piston), scroll, and rotary architectures enables facility managers and HVAC professionals to make informed decisions balancing efficiency, reliability, and cost.
Key Takeaways:
✓ Scroll compressors (Daikin JT series) deliver superior energy efficiency and quiet operation, ideal for continuous applications in temperature-controlled environments.
✓ Reciprocating piston compressors (Tecumseh AW/AV series) provide unmatched reliability for systems experiencing variable load cycles and startup-shutdown events.
✓ Rotary compressors (Matsushita, Hitachi, Toshiba) balance efficiency and cost-effectiveness, particularly valuable in emerging markets and small-to-medium capacity applications.
✓ Displacement-based selection enables precise capacity matching by dividing required cooling capacity (BTU) by manufacturer efficiency factor.
✓ Refrigerant compatibility must drive compressor selection, particularly given R22 phase-out and growing adoption of R407C and R410A alternatives.
✓ Proper oil charge, superheat adjustment, and commissioning procedures determine whether a compressor achieves nameplate capacity and design lifespan.
For facility planners and cooling system designers, detailed specification knowledge transforms compressor selection from guesswork into precision engineering, directly improving system performance, reducing energy consumption, and extending equipment lifespan.
LG MA62LCEG compressor specifications R134a 1/5 hp LBP
Category: Refrigeration
written by www.mbsmpro.com | January 18, 2026
Focus Keyphrase: LG MA62LCEG compressor specifications R134a 1/5 hp LBP refrigeration
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Meta Description: Explore the LG MA62LCEG hermetic reciprocating compressor – 1/5 HP, R134a refrigerant, 174W cooling capacity, RSIR motor. Ideal for domestic refrigerators and freezers. Full technical specs, performance data, and expert insights on mbsmpro.com.
Tags: LG compressor, MA62LCEG, R134a compressor, 1/5 hp compressor, LBP compressor, refrigeration compressor, hermetic compressor, LG MA series, Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm
Excerpt: The LG MA62LCEG is a reliable hermetic reciprocating compressor designed for low back pressure (LBP) applications using R134a refrigerant. Rated at approximately 1/5 HP, it delivers 174W (596 BTU/h) cooling capacity with 127W input power and a solid COP of 1.38.
LG MA62LCEG Compressor – Technical Breakdown and Real-World Performance
As a field technician who’s worked hands-on with countless LG units over the years, I can tell you the MA62LCEG stands out in the MA series for its balance of efficiency, quiet operation, and durability in everyday refrigeration setups. This compressor is built by LG Electronics (often labeled from Taizhou LG Electronics Refrigeration Co., Ltd.), and it’s a go-to choice for domestic refrigerators, small freezers, and light commercial units running on R134a.
Key nameplate details include:
LG MA62LCEG compressor specifications R134a 1/5 hp LBP mbsmpro
Voltage: 220-240V, 50Hz, single-phase
Refrigerant: R134a
Motor type: RSIR (Resistance Start Induction Run) with PTC relay
Thermal protection: Internal thermostat protected
Application: LBP (Low Back Pressure), suited for freezing and cooling from around -30°C to -10°C evaporating temperature
Performance Specifications Table
Parameter
Value
Notes
Cooling Capacity
174 W (596 BTU/h)
At standard LBP test conditions
Input Power
127 W
Efficient draw for its class
COP (Coefficient of Performance)
1.38
Good energy efficiency ratio
Horsepower Rating
~1/5 HP
Common rating in this displacement
Net Weight
9.1 kg
Compact and easy to handle
Motor Type
RSIR, PTC starter
Simple, reliable start mechanism
Packing (pcs/pallet)
80
Bulk shipping efficiency
These figures come straight from LG’s MA series lineup comparisons. In real installs, this translates to steady performance in household fridges holding medium to low temps without excessive cycling.
Comparison with Similar LG MA Series Models
To give you context as an engineer or technician, here’s how the MA62LCEG stacks up against close siblings:
Model
Capacity (W)
Input (W)
COP
HP Approx
Best For
MA53LAEG
142
106
1.34
~1/6+
Smaller fridges
MA57LBEG
160
119
1.35
~1/5
Mid-range domestic
MA62LCEG
174
127
1.38
1/5
Larger cabinets, light commercial
MA69LCEG
200
148
1.35
~1/4
Higher load applications
The MA62LCEG edges out the MA57 with better COP and higher capacity, making it a smart upgrade when you need a bit more pull without jumping to larger frames. Compared to older NS or MSA series, the MA line shows improved vibration damping and lower noise—often below 40 dB in field tests.
Benefits and Practical Advantages
Energy Efficiency — That 1.38 COP means lower electricity bills over time compared to less efficient units in the same HP range.
Quiet Operation — LG’s design reduces startup surge and running noise, perfect for home environments.
Reliability — Hermetic sealing + internal thermal protection keeps it safe from overloads and contaminants.
Versatility — Works well in LBP setups for freezers or fresh food compartments with good pull-down times.
Installation Tips and Pro Notices from Field Experience
Always mount it on rubber grommets to cut vibration transfer. Check the PTC relay and overload protector during service—common failure points if the unit’s been running hot. Use proper evacuation and charging procedures with R134a; overcharge kills efficiency fast. If retrofitting, confirm voltage matches 220-240V/50Hz to avoid burnout.
One smart tip: Pair it with a matching condenser fan and evaporator for best heat rejection—I’ve seen systems drop 10-15% performance from poor airflow.
This compressor delivers consistent cooling in real-world use, whether in a home fridge or small display unit. Technicians appreciate the straightforward wiring (RSIR means fewer components to fail) and the solid build quality LG puts into these.
For deeper dives, check official LG reciprocating compressor catalogs or trusted refrigeration parts databases.
The LG MA62LCEG remains a solid, field-proven choice for anyone working on R134a LBP systems.
