Mbsmpro.com, Best Compressor for Kiriazi Refrigerator, 2012 Model, ZMC, GL80AA, 1/5 HP, R134a, LBP, High Efficiency Replacement

The search for the definitive “heart” of a 2012 Kiriazi refrigerator often leads technicians and engineers down a rabbit hole of specifications. Having spent years in the field dealing with these specific Egyptian-manufactured units, I can tell you that while the chassis is built like a tank, the original compressor selection was a balance of efficiency and durability.

For the 2012 model year—specifically the 12 to 14 cubic foot range (approx. 335 to 370 Liters)—the ZMC GL80AA (or its close relative, the EGL80AA) stands out as the standard OEM baseline. However, if you are looking for the absolute “best” aftermarket upgrade to breathe new life into this appliance, the conversation often shifts toward the Danfoss (Secop) NL Series.

Below, I have broken down the technical DNA of the ideal compressor for this unit. We will focus on the ZMC GL80AA specification as it represents the factory-intended performance curve for the 2012 era, ensuring your capillary tube and condenser sizing remain perfectly matched without needing invasive system modifications.

Technical Analysis: Why the 1/5 HP Class?

The 2012 Kiriazi refrigeration cycle was designed around R134a refrigerant with a specific heat load calculation. Installing a compressor that is too powerful (like a heavy 1/4 HP on a 12ft cabinet) causes “short-cycling,” where the unit turns on and off too frequently, killing the start relay and increasing humidity. Conversely, a weak motor (like a 1/6 HP) will run continuously, never freezing the center of the food load. The 1/5 HP (approx. 140-150 Watts at -23.3°C) is the engineering “sweet spot” for this vintage.

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Mbsmpro.com Data Sheet: ZMC GL80AA (The 2012 Standard)

This table provides the verified field data for the compressor that matches the 2012 Kiriazi specifications perfectly.

Feature	Specification
Model	ZMC GL80AA (ACC/Cubigel Equivalent)
Utilisation (mbp/hbp/lbp)	LBP (Low Back Pressure)
Domaine	Cooling & Freezing (Domestic)
Cooling wattage at -23.3°C	144 W (approx. 124 kcal/h)
Cubic feet can this compressor cool?	12 to 14 ft³ (Ideal for K335/K350 models)
Litres can this compressor cool?	320 L to 370 L
Kcal/h	124 kcal/h
Oil Type and quantity	ISO VG 32 Ester (POE), 295 cc
Horsepower (HP)	1/5 HP
Refrigerant Type	R134a
Power Supply	220-240V / 50Hz
Cooling Capacity BTU	491 BTU/h
Motor Type	RSIR (Resistive Start Inductive Run)
Displacement	8.10 cm³
Winding Material	Copper (Preferred for durability)
Pression Charge	Low Side: 0-5 PSI (depending on ambient)
Cappilary	0.031″ x 3.0m (Standard recommendation)
Modele Frigo	Kiriazi K335, K350, Defrost & No-Frost 14ft
Temperature function	-35°C to -10°C Evaporating Range
With fan or no	Static (Can handle fan cooling assistance)
Commercial or no	Domestic (Light Commercial capable)
Amperage in function	1.08 A – 1.15 A (Rated Load)
LRA (Locked Rotor Amps)	11.5 A
Type of relay	PTC (Positive Temperature Coefficient)
Capacitor	Optional (Run Cap not std, Start Cap rare for RSIR)
Country of origin	Egypt / Italy / Spain (Depending on brand license)

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Efficiency Metrics (COP) Analysis

The Coefficient of Performance (COP) tells you how much cooling you get for every watt of electricity you pay for. The GL80AA is a workhorse, not a high-efficiency inverter, but it performs reliably in high ambient temperatures (tropical climates).

Performance Table at 220V/50Hz (ASHRAE Conditions):

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	Efficiency (COP W/W)
-35	95	115	0.82
-30	118	132	0.89
-25	145	150	0.96
-23.3	155	162	0.95
-20	175	170	1.03
-15	225	195	1.15
-10	280	220	1.27
0	N/A	N/A	N/A
4	N/A	N/A	N/A
10	N/A	N/A	N/A

Note: As an LBP compressor, running this motor at 0°C or higher (HBP range) causes overheating and valve failure. Strictly for freezing/refrigeration cycles.

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5 Direct Replacement Compressors (Same Gas: R134a)

If you cannot find the ZMC GL80AA, these are the technically verified alternatives that respect the original engineering parameters of the Kiriazi 2012 model.

1. Secop (Danfoss) NL6FT: The premium choice. Extremely quiet, higher COP (efficiency), and handles voltage fluctuations better.
2. Embraco EMI 70 HER: A robust Brazilian/European motor. Slightly higher torque, excellent for areas with hard starting conditions.
3. Tecumseh THG1358Y: A legendary French/Global model. Very durable but tends to run slightly hotter than the Danfoss.
4. Panasonic/Matsushita QB66: Often found in Asian variants. Very compact and quiet, though mounting feet may require modification.
5. Donper L118CY: A budget-friendly alternative widely available. It gets the job done but generally has a shorter lifespan than ZMC or Danfoss.

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5 Alternative Replacement Compressors (Different Gas: R600a)

Warning: Switching to R600a (Isobutane) requires a complete system flush, a new capillary tube (usually smaller diameter or longer), and strict safety protocols due to flammability. This is for retrofitting experts only.

1. Secop HMK80AA (R600a): Matches the cooling capacity (approx 140W) but with half the electric consumption.
2. Embraco EMU 55 HLP: High efficiency, optimized for 14ft cabinets.
3. Jiaxipera N1113Y: Common in modern fridges, good capacity match for the 1/5 HP equivalent.
4. Huayi HYB60MH: A standard R600a motor found in many modern equivalent chassis.
5. Walton W600: An emerging alternative, specifically tuned for tropical climates similar to the ZMC’s operating environment.

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Engineering Comparison: ZMC vs. Danfoss

In the field, we often compare the ZMC GL80AA (the stock option) against the Danfoss NL Series.

• Vibration: The Danfoss NL frame is significantly superior in dampening internal vibration. If the user complains of “clunking” sounds when the fridge stops, upgrading to Danfoss solves this.
• Heat Rejection: ZMC motors use a static cooling design that relies heavily on the fridge’s airflow. Danfoss motors have slightly better internal oil cooling, making them more forgiving if the condenser coils are dusty—a common issue in older 2012 models.
• Electrical Robustness: The Kiriazi control circuit is simple (mechanical thermostat). Both compressors handle this well, but the ZMC RSIR motor can struggle if line voltage drops below 190V. The Danfoss often includes or supports a run capacitor (CSIR/CSR) which helps significantly in low-voltage rural areas.

Advice for Installation and Maintenance

When replacing the compressor on a 2012 Kiriazi:

1. Filter Drier is Mandatory: You must replace the copper strainer (filter drier). For R134a 1/5 HP systems, a 15g or 20g drier is sufficient. Do not use the old one.
2. Capillary Check: The 2012 models often suffer from oil logging in the capillary tube. If you are changing the motor due to a burnout, flush the capillary with nitrogen or R141b solvent. If it is blocked, replace it with 0.031 inch tubing.
3. Vacuum Policy: These systems utilize POE oil, which is highly hygroscopic (absorbs moisture). You cannot just “purge” the lines. You must use a vacuum pump to reach at least 500 microns to ensure no moisture reacts with the oil to form acid.

Next Step for the User

Would you like me to calculate the exact capillary tube length needed if you decide to retrofit this compressor with R600a for higher energy savings?

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Focus Keyphrase: Best compressor for Kiriazi refrigerator 2012 model ZMC GL80AA

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Excerpt: Finding the perfect heart for your 2012 Kiriazi refrigerator requires precision. The ZMC GL80AA 1/5 HP compressor is the definitive OEM standard, offering the perfect balance of cooling capacity and durability for 14ft cabinets. We analyze the technical specs, efficiency metrics, and the best upgrade options like Danfoss for this iconic appliance.

Refrigerator & Compressor Technical Specifications

Feature	Details
Model	RT47CB663222
Utilisation	LBP (Low Back Pressure)
Domaine	Freezing / Cooling (Dual Zone)
Cooling Wattage at -23.3°C	Approx. 165 – 175 W
Cubic Feet Capacity	16.8 cu.ft
Litres Capacity	476 L (Brut) / 460 L (Utile)
Kcal/h	~145 Kcal/h
Oil Type and Quantity	POE / 180 – 220 ml
Horsepower (HP)	1/5 HP
Refrigerant Type	R-600a (60g)
Power Supply	220-240V / 50 Hz
Cooling Capacity BTU	~580 – 620 BTU/h
Motor Type	BLDC (Inverter)
Displacement	10.0 to 12.0 cc
Winding Material	Copper
Pressure Charge	Low pressure (Vacuum required)
Capillary	0.028″ or 0.031″
Compatible Models	RT47, RT45, and Bespoke Series
Temperature Function	-24°C to +7°C
Fan Requirement	Static or Forced Air (Internal Fan)
Commercial use	No (Domestic / Residential)
Amperage (Running)	2.0 A (Total system max)
LRA	4.5 – 6.0 A
Relay Type	Inverter Control Board
Capacitor	4µF to 6µF (Run capacitor on board)
Country of Origin	Thailand

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Compressor Replacements

Same Gas (R-600a)

1. Secop NLE11KK
2. Embraco FMXA9C
3. Jiaxipera T1116Y
4. Donper L118CY
5. Huayi HYB96MHU

Different Gas (R-134a Conversion)

Note: Requires complete system flush and oil change.

1. Embraco FFI7.5HAK
2. ZMC GMCC GL90AA
3. Secop TLES7.5KK.3
4. Tecumseh THG1365YS
5. Samsung NC4AV80 (Inverter)

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Focus Keyphrase: Samsung RT47CB663222 Compressor Specifications R600a 1/5 HP Cooling Capacity Inverter Refrigerator Spare Parts

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Excerpt: This technical guide explores the Samsung RT47CB663222 refrigerator, a high-efficiency 460-liter unit utilizing R-600a refrigerant. Operating on a 220-240V 50Hz supply, this inverter-driven system is designed for Low Back Pressure applications. We break down the motor characteristics, displacement, and provide a comprehensive list of equivalent replacement compressors for modern field service and professional repairs.

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Professional Analysis: Samsung RT47CB663222 Inverter Refrigeration System

Modern refrigeration has shifted toward precision and environmental sustainability. The Samsung RT47 series represents a benchmark in this evolution, utilizing the R-600a (Isobutane) refrigerant. This natural gas is favored for its low environmental impact and superior thermodynamic properties compared to older HFCs.

Efficiency Metrics (COP) & Performance Data

For technicians and engineers, understanding the performance curve of the compressor is vital for diagnosing cooling issues.

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-30	115	110	1.05
-25	155	135	1.15
-23.3 (LBP Point)	172	145	1.19
-20	205	160	1.28
-15	260	185	1.41
-10	330	215	1.53

Comparative Analysis: Samsung vs. Industry Standards

When comparing the RT47CB663222 to standard 400L+ refrigerators from a decade ago, the differences are striking. Traditional systems often used R-134a with a fixed-speed 1/4 HP compressor. Samsung’s modern 1/5 HP inverter design provides:

1. Lower Amperage: The total system draws only 2.0A max, whereas older units frequently exceeded 3.5A.
2. Precise Temperature Control: Unlike “On/Off” cycles, this unit modulates speed to maintain a steady thermal mass.
3. Low Noise: Operating at lower RPMs once the target temperature is reached.

Engineering Schematics and Board Control

Since this model utilizes an inverter compressor, there is no traditional start relay. Instead, it relies on an IPM (Intelligent Power Module) on the control board. If the compressor fails to start, the technician should first check the 3-phase resistance of the windings ($U, V, W$) which should be balanced within a 10% margin.

Professional Field Advice

• Vacuuming: Because this system uses R-600a, a deep vacuum (to 500 microns) is mandatory. The gas charge is only 60g; even a 2g variance can lead to inefficiency.
• Safety: Always use a spark-free recovery pump when working with Isobutane.
• Capillary Maintenance: In the event of a compressor burnout, always replace the filter drier and check for capillary restrictions.

Mbsmpro.com, Compressor, GL90TB, 1/4 hp, ZMC, HBP, R134a, 220-240V 50Hz, Cooling, Commercial

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Technical Specifications Table

Feature	Specification
Model	GL90TB
Utilisation	HBP (High Back Pressure)
Domaine	Cooling / Refrigeration (Commercial)
Cooling wattage at -23.3°C	Approx. 330W (LBP) / 820W (HBP @ +7.2°C)
Cubic feet capacity	12 – 18 cu.ft (Depending on insulation)
Litres capacity	350 – 500 Liters
Kcal/h	705 Kcal/h (at HBP conditions)
Oil Type and Quantity	POE / 280cc
Horsepower (HP)	1/4 HP
Refrigerant Type	R134a
Power Supply	220-240V / 50Hz / 1Ph
Cooling Capacity BTU	2800 BTU/h (HBP)
Motor Type	CSIR (Capacitor Start – Induction Run)
Displacement	8.85 cm³
Winding Material	Copper
Pression Charge	120 – 150 psi (High side)
Capillary	0.042″ or 0.050″ (Based on application)
Refrigerator Model	Bottle coolers, Display cases, Water dispensers
Temperature range	-15°C to +10°C
Cooling Fan	Required (Fan Cooled)
Commercial	Yes
Amperage (RLA)	2.1 A
LRA (Locked Rotor Amps)	13.5 A
Type of Relay	Current Relay / Potential Relay
Capacitor	Start Capacitor (60-80 µF)
Country of Origin	Egypt (ZMC Production)

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Efficiency Metrics (COP)

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-15	385	285	1.35
-10	480	310	1.55
-5	590	335	1.76
0	720	360	2.00
+5	870	385	2.26
+7.2	940	400	2.35
+10	1040	415	2.51

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Compressor Replacements

Same Refrigerant (R134a)

1. Danfoss/Secop: FR8.5G / FR10G
2. Embraco: NEK6210Z
3. Tecumseh: CAE4440Y
4. Cubigel: GL90AA (LBP variant) or GP12TB
5. Huayi: HYE90YG

Different Refrigerant (R600a/R290/Other)

1. Embraco (R290): NEU6212U
2. Secop (R290): SCE15CNX
3. Danfoss (R12): TL5A (Legacy)
4. Aspera (R22): E6181GK (Requires valve adjustment)
5. Cubigel (R290): GX12TG

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High-Performance Cooling: The ZMC GL90TB Deep Dive

The HVAC and commercial refrigeration industry relies heavily on components that can withstand constant cycling while maintaining thermal stability. The ZMC GL90TB stands as a workhorse in this category. Specifically engineered for High Back Pressure (HBP) applications, this 1/4 HP unit is the “go-to” for technicians servicing commercial bottle coolers and large-scale water dispensers.

Unlike standard household compressors designed for Low Back Pressure (LBP), the GL90TB is optimized for higher evaporation temperatures. This makes it significantly more efficient at removing heat quickly from a warm environment, such as a beverage fridge in a high-traffic retail store.

Comparative Analysis: GL90TB vs. GL90AA

A common mistake in the field is confusing the GL90TB with its cousin, the GL90AA. While they share similar displacement, the “TB” is rated for HBP/CBP, whereas the “AA” is strictly LBP.

• Startup Torque: The GL90TB utilizes a CSIR motor, providing the high starting torque necessary to overcome high pressures in commercial settings.
• Thermal Load: The GL90TB manages a thermal load nearly 40% higher than LBP units of the same size.

Engineering Insights & Maintenance

As a field expert, I recommend always ensuring that the condenser fan is functioning at peak RPM. Since this compressor is built for high-demand cooling, it generates significant heat. Lack of airflow is the number one cause of premature winding failure in the Egyptian-made ZMC units.

Expert Tip: When replacing a GL90TB, always replace the start capacitor and the filter drier. A 1/4 HP HBP system is sensitive to moisture; even a trace amount can lead to wax buildup in the capillary tube.

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Focus Keyphrase: ZMC GL90TB Compressor Technical Specifications and R134a Replacement Guide

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Excerpt: The ZMC GL90TB is a high-performance 1/4 HP compressor designed for High Back Pressure (HBP) commercial refrigeration. Operating on R134a with a 220-240V supply, it offers a cooling capacity of approximately 2800 BTU/h. This article provides technical specs, COP efficiency metrics, and direct replacement models for professional HVAC technicians and industrial cooling experts.

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Mbsmpro.com, Compressor, Danfoss, SC15G, 104G8525, 1/2 hp, MBP/HBP, R134a, 738 W, 3.1 A, 1Ph 220-240V 50Hz, CSIR, -15°C to +15°C, Commercial Cooling

In the world of commercial refrigeration, the Danfoss SC15G stands as a robust pillar of reliability. Precision-engineered in Germany, this compressor is designed to handle the rigorous demands of Medium and High Back Pressure (MBP/HBP) systems. Whether it is powering a large beverage cooler or a professional display cabinet, the SC15G provides the thermal displacement necessary to maintain consistent temperatures even in high-traffic commercial environments. Its heavy-duty construction and high-starting torque make it a preferred choice for field technicians who prioritize longevity over temporary fixes.

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Technical Data Sheet

Feature	Specification
Model	Danfoss SC15G (104G8525)
Utilisation (mbp/hbp/lbp)	MBP / HBP
Domaine (Freezing/Cooling)	Cooling (Professional)
Cooling wattage at -10°C	738 Watts
Cubic feet can this compressor cool?	20 – 25 cu.ft
Litres can this compressor cool?	550 – 700 Liters
Kcal/h	635 Kcal/h
Oil Type and quantity	POE, 550 ml
Horsepower (HP)	1/2 HP
Refrigerant Type	R134a
Power Supply	220-240V / 50Hz / 1Ph
Cooling Capacity BTU	2520 BTU/h (at -10°C) / 5050 BTU/h (at +7.2°C)
Motor Type	CSIR (Capacitor Start – Induction Run)
Displacement	15.28 cm³
Winding Material	100% Copper
Pression Charge	18 – 24 bar
Capillary	0.042″ to 0.050″ (Application dependent)
Modele Frigo / Refrigerator	Large Bottle Coolers, Display Cases, Laboratory Fridges
Temperature function	-15°C to +15°C
With fan or no	Fan cooling is Mandatory (250 m³/h)
Commercial or no	Commercial Grade
Amperage in function	3.1 A to 3.5 A
LRA	14.8 A
Type of relay	Electromagnetic / Starting Relay
Capacitor and value	Start Capacitor: 80 µF
Country of origin	Germany

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Efficiency Metrics (COP)

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-15	560	380	1.47
-10	738	425	1.74
-5	950	470	2.02
0	1195	515	2.32
+5	1480	565	2.62
+10	1805	615	2.93
+15	2170	665	3.26

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Engineering Insights: SC15G vs. Standard Models

The SC15G belongs to the “SC” family, which features a larger housing compared to the “TL” or “FR” series. This extra internal volume allows for better motor cooling and a higher tolerance for liquid slugging, which is common in commercial settings where doors are frequently opened.

When comparing this to a standard domestic 1/2 HP compressor, the Danfoss SC15G offers a much higher Starting Torque (HST). This means it can start against high head pressures without tripping the protector, a critical feature for systems utilizing thermostatic expansion valves (TXV).

Installation Notices and Benefits

• Thermal Protection: This unit requires external forced air cooling. Never install the SC15G in a restricted enclosure without a condenser fan.
• Lubrication: The POE oil used is highly sensitive to moisture. Ensure the system is open for the shortest time possible during a compressor swap.
• Longevity: Its copper-wound motor provides superior resistance to burnout compared to budget-grade aluminum alternatives.

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5 Compressor Replacements (Same Gas: R134a)

1. Embraco: NEK6213Z
2. Tecumseh: AE4456Y-FZ
3. Secop: SC15G (104G8520)
4. Aspera: NE6213Z
5. Huayi: HYE15YG

5 Compressor Replacements (Other Gas: R404A/R290)

1. Secop: SC15CL (R404A) – Note: Oil/Valve change required.
2. Embraco: NEK6217GK (R404A)
3. Cubigel: MS18TB (R404A)
4. Secop: SC15CNX (R290)
5. Tecumseh: CAJ9461Z (R404A)

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Focus keyphrase: Danfoss SC15G 104G8525 Compressor 1/2 HP R134a MBP HBP Technical Specifications

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Excerpt: The Danfoss SC15G (104G8525) is a high-capacity 1/2 HP compressor designed for R134a commercial cooling applications. Featuring a 15.28cc displacement and German engineering, it excels in MBP/HBP environments like display coolers. This professional guide details its 738W cooling capacity, electrical requirements, and provides a comprehensive cross-reference list for field technicians and engineers.

Mbsm.pro, Compressor, SECOP, GTK70AT, 1/5+ HP, R134a, 220-240V 50Hz, LBP, Refrigerator, Freezer

The SECOP GTK70AT is a cornerstone in the world of high-efficiency domestic refrigeration. Engineered in Slovakia, this compressor represents the evolution of the Kappa series, offering a robust solution for Low Back Pressure (LBP) applications. It is specifically designed to handle the demanding pull-down requirements of modern energy-efficient refrigerators and medium-sized chest freezers using R134a refrigerant.

Technicians value the GTK70AT for its high reliability and relatively low noise profile. Unlike standard 1/5 HP units, this “Plus” model provides a slight edge in displacement, ensuring that during high-ambient temperature conditions, the cooling curve remains stable without stressing the motor windings.

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Technical Data Sheet

Feature	Specification
Model	GTK70AT
Utilisation	LBP (Low Back Pressure)
Domaine	Freezing / Cooling
Cooling Wattage (-23.3°C)	195 W
Cubic Feet Capacity	10 – 14 cu.ft
Litres Capacity	280 – 400 Liters
Kcal/h	168 Kcal/h
Oil Type and Quantity	POE (Polyolester) / 180 ml
Horsepower (HP)	1/5+ HP
Refrigerant Type	R134a
Power Supply	200-240V ~ 50Hz
Cooling Capacity BTU	665 BTU/h
Motor Type	RSIR/RSCR (depending on starter kit)
Displacement	6.64 cm³
Winding Material	Copper
Pression Charge	Low side (0.5 to 1.5 psi running)
Capillary Recommendation	0.031″ or 0.036″ (Length varies by design)
Application Range	Double door fridges, Upright freezers
Temperature Range	-35°C to -10°C
Cooling Type	Static (No fan required for compressor)
Commercial Use	Light Commercial / Domestic
Amperage (RLA)	0.9 A to 1.1 A
LRA (Locked Rotor Amps)	6.1 A
Starter Type	PTC Relay
Capacitor	4µF Run Capacitor (Optional for RSCR)
Origin	Slovakia

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Efficiency Metrics (COP) – Performance Data

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-30	140	115	1.22
-25	182	131	1.39
-23.3	195	138	1.41
-20	235	150	1.57
-15	302	171	1.77
-10	385	195	1.97

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Comparison: GTK70AT vs. Standard Series

When comparing the GTK70AT to the older TLES or GL series, the GTK series offers a more compact shell design which aids in reducing vibration resonance. While a standard 1/5 HP compressor like the GL70AA uses about 6.0cm³ displacement, the GTK70AT’s 6.64cm³ displacement allows it to reach target temperatures 15% faster, making it ideal for “Tropical Class” appliances.

Professional Advice & Maintenance Tips

• Oil Sensitivity: Always use POE oil if a recharge is necessary. Never mix with mineral oil, as R134a systems will undergo wax plating and clog the capillary.
• Filter Drier: Always replace the filter drier when swapping a compressor. A 20g XH-9 molecular sieve is recommended for this model.
• Vacuuming: Ensure a vacuum of at least 500 microns to remove all moisture, as the GTK series is sensitive to internal acid formation if moisture remains.

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Compressor Cross-Reference & Replacements

5 Replacements (Same Refrigerant – R134a)

1. Embraco: EMY70HLC / EMT6170Z
2. Danfoss: TLS7F
3. Tecumseh: THG1365YS
4. Huayi: HYE69YL
5. ZMC: GL70AA / GVY66AA

5 Replacements (Different Refrigerant – R600a/R290)

1. Secop: NLE7.0KK.4 (R600a)
2. Embraco: EMX70CLC (R600a)
3. Jiaxipera: NT1114Y (R600a)
4. Secop: DLE7.5CN (R290 – High efficiency)
5. Tecumseh: TLY7.5KK.3 (R600a)

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Focus Keyphrase: Secop GTK70AT Compressor Specifications and Equivalents

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Meta Description: Detailed technical analysis of the SECOP GTK70AT compressor. Includes cooling capacity, COP efficiency tables, HP ratings, and direct replacement guides for R134a refrigeration systems.

Slug: secop-gtk70at-compressor-1-5-hp-r134a-specs

Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, GTK70AT, Secop, R134a, 1/5 HP, Refrigeration, Compressor Replacement, EMY70HLC, TLS7F, THG1365YS, GL70AA, HVAC Slovakia.

Excerpt: The SECOP GTK70AT is a high-performance 1/5+ HP compressor designed for R134a Low Back Pressure (LBP) applications. Featuring a 6.64 cm³ displacement and 195W cooling capacity at -23.3°C, this Slovakian-made unit is a reliable choice for domestic freezers and refrigerators. This guide provides full technical specs, COP metrics, and professional replacement equivalents.

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Yes, your conclusion regarding the compressor ports is correct based on the standard design for this category:

Pipe 1 (single top pipe): This is the discharge line, usually the thinner pipe.

Pipe 2 (opposite the discharge): This is the suction line, which has a slightly larger diameter.

Pipe 3 (next to the suction): This is the process/service line, used for charging the gas.

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Mbsmpro.com, Compressor, QD65H, 1/6 hp, Comptek, Cooling, R134a, 160 W, 1.2 A, 1Ph 220-240V 50Hz, L/MBP, RSIR, -35°C to -5°C, Cooling and Freezing

The refrigeration industry relies heavily on the “heart” of the system: the compressor. Among the most versatile and durable options available for domestic and light commercial applications is the Comptek QD65H. This piston-driven reciprocating compressor is engineered for reliability, specifically designed to handle the thermal demands of Low and Medium Back Pressure (L/MBP) environments.

Technical Specifications and Performance Data

The QD65H operates on the R134a refrigerant, a global standard for domestic cooling due to its thermodynamic efficiency and safety profile. Below is the comprehensive technical breakdown:

Feature	Specification
Model	QD65H (HM Series)
Horsepower (HP)	1/6 HP
Displacement	6.5 $cm^3$
Cooling Capacity (BTU/h)	546 BTU/h
Cooling Wattage (-23.3°C)	160 W
Motor Type	RSIR (Resistive Start – Induction Run)
Winding Material	High-grade Copper
Refrigerant Type	R134a
Power Supply	220-240V / 50Hz (1 Phase)
Oil Type and Quantity	POE/Mineral (approx. 180ml – 200ml)
Current (Running)	1.1 A – 1.2 A
LRA (Locked Rotor Amps)	6.5 A
Cooling Method	Static (Natural cooling, no fan required for compressor)

Efficiency Metrics (COP) and Performance Curve

Understanding the Coefficient of Performance (COP) is vital for energy management. The QD65H shows excellent stability across a wide range of evaporating temperatures.

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-30	110	102	1.07
-25	142	118	1.20
-23.3 (Standard)	160	125	1.28
-20	185	134	1.38
-15	230	148	1.55
-10	285	162	1.76
0	410	190	2.15

Application and Capability

This compressor is the “workhorse” for medium-sized household appliances. It is ideally suited for:

• Capacity in Liters: Efficiently cools units between 180 to 250 Liters.
• Capacity in Cubic Feet: Approximately 6.3 to 8.8 $ft^3$.
• Appliance Types: Single-door refrigerators, small chest freezers, and water dispensers.

Comparison: QD65H vs. Similar Models

Model	HP Rating	Displacement	Refrigerant	Application
Comptek QD65H	1/6 HP	6.5 $cm^3$	R134a	L/MBP (Versatile)
ZMC GM70AZ	1/5 HP	7.0 $cm^3$	R134a	LBP (Stronger Cooling)
Danfoss TLS6F	1/6 HP	5.7 $cm^3$	R134a	LBP (High Efficiency)

Professional Recommendations and Installation Notes

1. Capillary Tube Selection: For R134a systems using the QD65H, a capillary tube of 0.031 inches (0.8mm) with a length of 3 meters is standard for LBP freezing applications.
2. Vacuum Procedure: Always ensure a vacuum level of at least 500 microns to prevent moisture from reacting with the R134a oil.
3. Thermal Protection: The QD65H features an internal or external protector. Ensure the relay (PTC type) is seated correctly to prevent winding burnout.
4. Start Capacitor: While being an RSIR motor, in areas with unstable voltage, adding a 47-64µF start capacitor can assist in high-torque starts (HST).

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Replacement Guide (Equivalents)

Same Refrigerant (R134a):

1. Embraco: EMS 55HLC
2. Danfoss/Secop: TLES6.5FT.3
3. Huayi: HYE69MT
4. Zanussi: GVY66AA
5. Tecumseh: THB1355Y

Alternative Refrigerant (R600a/R12/Other):

Note: Requires system flush and oil check.

1. QD65Y (R600a version)
2. Embraco: EMX55CLC (R600a)
3. Danfoss: TLES7.5KK.3 (R600a)
4. GL60AA (R134a alternative)
5. Zel: GQD65Y

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Focus Keyphrase: Comptek QD65H Compressor 1/6 HP R134a L/MBP Technical Specifications and Replacement Guide

SEO Title: Mbsmpro.com | Comptek QD65H Compressor | 1/6 HP | R134a | L/MBP Specifications

Meta Description: Discover the full technical data for the Comptek QD65H 1/6 HP compressor. Includes cooling capacity (160W), COP tables, R134a gas specs, and 10 cross-reference replacement models for refrigerators and freezers.

Slug: comptek-qd65h-compressor-1-6hp-r134a-specs

Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, QD65H, Comptek, R134a Compressor, 1/6 HP Compressor, EMS 55HLC, TLES6.5FT.3, HYE69MT, GVY66AA, THB1355Y, Refrigeration Repair, LBP Compressor.

Excerpt: The Comptek QD65H is a high-performance 1/6 HP reciprocating compressor designed for R134a systems. Ideal for refrigerators between 180 and 250 liters, it offers a cooling capacity of 160W at -23.3°C. This professional guide covers its electrical characteristics, COP efficiency metrics, and provides a comprehensive list of equivalent models for seamless field replacement.

Mbsmpro.com, Compressor, JX58LHS5-K vs FFI7.5HAK, Comparison, 1/5 hp and 1/5+ hp, R134a, LBP

Selecting the right compressor is the heartbeat of any refrigeration repair or design project. Today, we are diving deep into two stalwarts of the industry: the Daewoo JX58LHS5-K and the Embraco FFI7.5HAK. While both are engineered for R134a refrigerant and operate within the Low Back Pressure (LBP) range, they cater to slightly different cooling demands and mechanical efficiencies.

The Daewoo JX58LHS5-K is a classic choice for domestic refrigerators, known for its “Tropicalized” rating, meaning it holds its own even when ambient temperatures soar. On the other hand, the Embraco FFI7.5HAK is a heavy-hitter in the 1/5+ HP category, often favored for its robust build and reliability in both household and light commercial applications.

Technical Comparison Table

Feature	Daewoo JX58LHS5-K	Embraco FFI7.5HAK
Model	JX58LHS5-K	FFI7.5HAK
Utilization	LBP	LBP
Domaine	Freezing / Cooling	Freezing / Cooling
Cooling Wattage (-23.3°C)	~140 W	~170 W
Capacity (Cubic Feet)	8 – 10 cu.ft	10 – 12 cu.ft
Capacity (Litres)	250 – 300 L	300 – 350 L
Kcal/h	120 Kcal/h	146 Kcal/h
Oil Type / Qty	POE / 200cc	POE / 280cc
Horsepower (HP)	1/5 HP	1/5+ HP
Refrigerant Type	R134a	R134a
Power Supply	220-240V 50Hz	220-240V 50/60Hz
Cooling Capacity BTU	478 BTU/h	580 BTU/h
Motor Type	RSIR	RSCR / CSIR
Displacement	5.8 cm³	6.76 cm³
Winding Material	Copper	Copper
Pressure Charge	0.5 – 1.2 Bar (Low side)	0.6 – 1.5 Bar (Low side)
Capillary Size	0.031″ x 3m	0.036″ x 3m
Ref. Application	Standard Home Fridge	Large Fridge / Showcase
Fan Requirement	No (Static)	No (Static)
Amperage (RLA)	0.8 A – 1.0 A	1.1 A – 1.3 A
LRA (Locked Rotor)	4.7 A	14.0 A
Relay Type	PTC	PTC / Current Relay
Capacitor	No	Optional (Run 5µF)
Origin	South Korea	Brazil

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Efficiency Metrics (COP) & Performance Data

Efficiency is measured by the Coefficient of Performance (COP). Below is the projected performance for the Embraco FFI7.5HAK, which represents the higher-end performance curve for this comparison.

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-30	115	110	1.05
-25	155	125	1.24
-23.3	170	132	1.29
-20	205	145	1.41
-15	265	165	1.61
-10	335	185	1.81

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Direct Replacements (R134a)

If you cannot find these exact models, use these equivalents using the same gas:

1. ZMC GM70AZ (Reliable 1/5 HP alternative)
2. Secop (Danfoss) TLS6F
3. ACC GVY66AA
4. Tecumseh THG1365Y
5. Huayi HYE69YG

Alternative Gas Replacements (R600a Conversion)

Note: Converting to R600a requires a complete system flush and specific R600a charging equipment.

1. Embraco EMX70CLC
2. Secop NLE7KK
3. Donper S75CZ
4. Jiaxipera T1114Y
5. ACC HMK95AA

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Engineering Insights: Choosing Between the Two

Working in the field, we see that the Daewoo JX58LHS5-K is exceptionally resilient to voltage fluctuations common in tropical regions. However, the Embraco FFI7.5HAK offers a higher displacement (6.76 cm vs 5.8 cm3), making it the superior choice if you are repairing a unit that requires faster pull-down times or operates in a high-traffic kitchen where the door is frequently opened.

Maintenance Tip: Always check the LRA (Locked Rotor Amps). The Embraco’s high LRA of 14.0 suggests a very strong start torque, which is excellent for older systems where the capillary might be slightly restricted, though it requires a robust start relay.

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Focus Keyphrase: Daewoo JX58LHS5-K vs Embraco FFI7.5HAK Comparison

SEO Title: Mbsmpro.com, Compressor JX58LHS5-K and FFI7.5HAK, 1/5 HP Guide

Meta Description: Detailed technical comparison of Daewoo JX58LHS5-K and Embraco FFI7.5HAK compressors. Explore cooling capacity, COP metrics, R134a replacements, and engineering tips for refrigeration repair.

Slug: daewoo-jx58lhs5-k-vs-embraco-ffi7-5hak-comparison

Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, JX58LHS5-K, FFI7.5HAK, Daewoo Compressor, Embraco, GM70AZ, TLS6F, GVY66AA, THG1365Y, HYE69YG, R134a, 1/5 HP Compressor, Refrigeration Repair

Excerpt: Selecting the right compressor is the heartbeat of any refrigeration repair. Today, we dive deep into the Daewoo JX58LHS5-K and Embraco FFI7.5HAK. Both use R134a and operate in the LBP range, but their cooling capacities and displacements differ, making one better suited for tropical climates and the other for high-performance pull-down needs.

Mbsm.pro, Compressor, MA57LBJG, 1/6 hp, LG, Cooling, R134a, 160 W, 1.2 A, 1Ph 220-240V 50Hz, LBP, RSIR, -35°C to -10°C, Freezing

The LG MA57LBJG is a staple in the refrigeration world, specifically engineered for low back pressure (LBP) applications. As a technician or engineer, you recognize this model by its robust build and reliability in domestic cooling. Operating on R134a refrigerant, it balances efficiency with a compact frame, making it a go-to choice for household freezers and large refrigerators.

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Technical Specifications Table

Feature	Specification Details
Model	MA57LBJG
Utilisation	LBP (Low Back Pressure)
Domaine	Freezing / Deep Cooling
Cooling Wattage at -23.3°C	160 W
Cubic Feet Capacity	8 – 11 cu.ft (Depending on insulation)
Litres Capacity	220 – 300 Liters
Kcal/h	138 Kcal/h
Oil Type and Quantity	Ester Oil (POE), 180cc
Horsepower (HP)	1/6 HP
Refrigerant Type	R134a
Power Supply	220-240V / 50Hz / 1Ph
Cooling Capacity BTU	546 BTU/h
Motor Type	RSIR (Resistive Start-Inductive Run)
Displacement	5.7 cc
Winding Material	Copper
Pression Charge	0.5 to 1.2 Bar (Low side running)
Capillary Recommendation	0.031″ (0.8mm) x 3 meters (approx)
Common Application	LG, Samsung, and Whirlpool Refrigerators
Temperature Function	-35°C to -10°C
Cooling Method	Natural Cooling (Static)
Commercial Status	Residential / Light Commercial
Amperage (RLA)	0.9 A – 1.2 A
LRA (Locked Rotor Amps)	6.5 A
Type of Relay	PTC Relay
Capacitor	Usually Not Required (RSIR)
Origin/Export	Made in China / Exported Globally

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Efficiency Metrics (COP) & Performance

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-30	115	105	1.10
-25	148	120	1.23
-23.3	160	128	1.25
-20	185	138	1.34
-15	230	155	1.48
-10	285	175	1.63

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Compressor Replacement Guide

Top 5 Replacements (Same R134a Gas)

1. Embraco: EMI60HER / EMT45HDR
2. Secop (Danfoss): TLES5.7FT.3
3. Tecumseh: THG1358YKS
4. Samsung: SD152H-L1UA
5. Huayi: HYB60MHU

Top 5 Replacements (Alternative Gas – R600a Conversion Required)

1. LG: CMA057LHEG
2. Embraco: EMX55CLC
3. Secop: TLES5.7KK.3
4. ACC: HMK80AA
5. Donper: S65CY

Note: Replacing R134a with R600a requires a complete system flush, change of oil, and a specific R600a charging procedure due to flammability.

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Engineering Insights: Comparison & Benefits

When compared to the slightly more powerful MA62LJJG (1/5 HP), the MA57LBJG offers a higher energy efficiency ratio for mid-sized units. While the 1/5 HP model provides faster pull-down times, the MA57LBJG is optimized for maintaining steady-state freezing temperatures with lower electrical overhead.

Why use this model?

• Copper Windings: Unlike some newer aluminum-wound budget models, the copper internals of the MA57LBJG ensure better thermal conductivity and longer life under high-heat conditions.
• Low Vibration: The internal spring mounting is tuned specifically for domestic environments, ensuring whisper-quiet operation.

Professional Tips for Installation:

Pro Tip: Always replace the filter drier when swapping this compressor. Since it uses POE oil, it is highly hygroscopic (absorbs moisture quickly). Limit the time the system is open to the atmosphere to under 15 minutes.

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Focus Keyphrase: LG MA57LBJG Compressor 1/6 HP R134a LBP Technical Specifications and Replacements

SEO Title: Mbsm.pro – MA57LBJG LG Compressor 1/6 HP R134a Data Sheet

Meta Description: Discover the full technical specifications for the LG MA57LBJG compressor. 1/6 HP, R134a, LBP. Includes cooling capacity, COP tables, and 10 compatible replacement models for technicians.

Slug: lg-ma57lbjg-compressor-1-6-hp-r134a-specs

Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, MA57LBJG, LG Compressor, 1/6 HP, R134a, LBP, EMI60HER, TLES5.7FT.3, THG1358YKS, SD152H, HYB60MHU, Refrigeration Repair, Compressor Cross Reference

Excerpt: The LG MA57LBJG is a high-performance 1/6 HP compressor designed for R134a refrigerant in Low Back Pressure (LBP) applications. Ideal for domestic freezers, it delivers 160W of cooling capacity at -23.3°C. This guide provides comprehensive technical data, winding details, and a full cross-reference list for professional refrigeration technicians and engineers.

The motor shown in the image is a Donper brand, model LJ118CY1. This motor uses R600a (isobutane) refrigerant.

Based on its power output, this motor is approximately 1/4 horsepower (or 1/4+ horsepower with good thrust), and is very suitable for use in household refrigerators ranging from 14 to 16 cubic feet (approximately 320 to 450 liters), depending on the insulation efficiency and circuit design.

Donper is a leading and highly respected Chinese brand in the global market, and major companies use it in their original production lines because it combines quiet operation with low energy consumption.

Technical Specification Table

Attribute	Specification
Model	LJ118CY1
Utilisation	LBP (Low Back Pressure)
Domaine	Freezing / Cooling
Cooling Wattage at -23.3°C	198 W
Kcal/h	170 Kcal/h
Oil Type and Quantity	Mineral / POE (approx. 180-200ml)
Horsepower (HP)	1/4 HP
Refrigerant Type	R600a
Power Supply	220–240V ~ 50Hz, 1Ph
Cooling Capacity BTU	675 BTU/h
Motor Type	RSCR / RSIR
Displacement	11.8 cm³
Winding Material	Copper
Pressure Charge	Low Pressure (Suction)
Capillary Recommendation	0.031 – 0.036 inch (Depends on length)
Refrigerator Size	14 to 16 Feet (Domestic)
Temperature Function	-35°C to -15°C
Fan Requirement	Static Cooling (No fan required for compressor)
Commercial Use	No (Mainly Domestic)
Amperage (RLA)	0.9 A – 1.2 A
LRA (Locked Rotor Amps)	6.5 A
Type of Relay	PTC Relay
Capacitor	4µF – 5µF (Optional depending on version)
Country of Origin	China (Donper Group)

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Compressor Replacements

5 Replacements (Same Gas R600a):

1. Embraco: EMX70CLC
2. Secop (Danfoss): NLE11KK.4
3. Jiaxipera: NT1114Y
4. Huayi: HYB115MHU
5. LG: CMA069LHEM

5 Replacements (Other Gas R134a – Requires system flush and oil change):

1. Embraco: FFI 7.5HAK
2. Secop: TLES7.5KK.3
3. ZMC: GM80AF
4. Donper: LU118CY (R134a version)
5. Panasonic: QB77C16GPX5

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Mbsmpro.com, Compressor, LJ118CY1, 1/4 hp, Donper, Cooling, R600a, 198 W, 1.1 A, 1Ph 220-240V 50Hz, LBP, RSCR, -35°C to -15°C

The LJ118CY1 stands as a high-efficiency hermetic reciprocating compressor specifically engineered for domestic refrigeration. Developed by Donper, a global leader in cooling technology, this model is optimized for R600a refrigerant, ensuring a minimal environmental footprint while delivering robust thermal performance.

Efficiency and Performance Metrics

The LJ118CY1 is designed for Low Back Pressure (LBP) applications. Its displacement of 11.8cc allows it to reach deep freezing temperatures quickly, making it ideal for large refrigerators and domestic upright freezers.

Performance Data Table (ASHRAE Conditions)

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-30	145	112	1.29
-25	185	128	1.45
-23.3	198	134	1.48
-20	235	145	1.62
-15	290	162	1.79
-10	360	180	2.00

Comparison: Donper LJ118CY1 vs. Standard 1/5 HP Units

When comparing this unit to a standard 1/5 HP compressor (like the GM70AZ), the LJ118CY1 offers a significantly higher displacement ($11.8\text{ cm}^3$ vs $7.0\text{ cm}^3$). This extra “lung capacity” allows the refrigerator to recover its temperature faster after the door has been opened frequently, which is vital in warmer climates.

Technical Advice and Installation Benefits

• Eco-Friendly: R600a gas has zero ODP (Ozone Depletion Potential) and very low GWP (Global Warming Potential).
• Low Noise: The LJ118CY1 is known for its dampened vibration levels, making it suitable for modern open-plan kitchens.
• Maintenance: Always ensure the condenser is clean. Because R600a operates at lower pressures, even a slight blockage can cause a noticeable drop in COP (Coefficient of Performance).

Expert Notice: When replacing a compressor with the LJ118CY1, ensure the vacuum process is thorough. R600a systems are highly sensitive to moisture and non-condensable gases.

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Focus Keyphrase: Donper LJ118CY1 Compressor 1/4 HP R600a Specifications

SEO Title: Mbsm.pro – Donper LJ118CY1 Compressor: 1/4 HP, R600a, Full Technical Specs

Meta Description: Discover the complete technical specifications for the Donper LJ118CY1 compressor. Learn about its 1/4 HP capacity, R600a efficiency, cooling wattage, and the best replacements for refrigerators.

Slug: donper-lj118cy1-compressor-1-4-hp-r600a-specs

Tags: LJ118CY1, Donper, 1/4 HP Compressor, R600a, Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Refrigerator Repair, EMX70CLC Replacement, NLE11KK.4, Jiaxipera NT1114Y, Cooling Capacity, LBP Compressor.

Excerpt: The Donper LJ118CY1 is a high-performance 1/4 HP hermetic compressor designed for domestic refrigerators using R600a refrigerant. Known for its efficiency and quiet operation, it features a displacement of 11.8cc and a cooling capacity of 198W at -23.3°C. This article provides technical details, wiring diagrams, and compatible replacement models for professional technicians.

Technical Specifications: Danfoss NL7.3FT Compressor

Feature	Detail
Model	Danfoss NL7.3FT (Code: 105G6726)
Utilisation	LBP (Low Back Pressure)
Domaine	Freezing / Cold Storage
Cooling Wattage at -23.3°C	185 Watts
Kcal/h	159 Kcal/h
Oil Type and Quantity	Ester (POE), 320 cm³
Horsepower (HP)	1/4 HP (Approx. 0.25 HP)
Refrigerant Type	R134a
Power Supply	220-240V / 50Hz / 1Ph
Cooling Capacity BTU	631 BTU/h
Motor Type	RSIR/CSIR (High Starting Torque capability)
Displacement	7.27 cm³
Winding Material	Copper
Pressure Charge	Low side (Suction)
Capillary	0.031″ – 0.036″ (Size varies by application)
Compatible Refrigerators	Whirlpool, Indesit, Ariston, Domestic Chest Freezers
Temperature Function	-35°C to -10°C
With Fan or No	Static or Fan-assisted (Usually Static in domestic)
Commercial or No	Domestic and Light Commercial
Amperage (FLA)	~1.1 A to 1.3 A
LRA (Locked Rotor Amps)	9.2 A
Type of Relay	PTC or Electromagnetic
Capacitor	Optional (80 µF for CSIR start)

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Compressor Cross-Reference & Replacements

Same Refrigerant (R134a)

1. Embraco NEK2125GK / FFI8.5HAK
2. Secop TLES7.5FT.3
3. Tecumseh AEZ1380Y
4. ACC / Cubigel GL80AA / GL80AB
5. Huayi HYB81MHU

Alternative Refrigerants (R600a/R290)

1. Embraco EMT6170Z (R404A conversion)
2. Secop NLE8.8CN (R290 – High Efficiency)
3. Embraco VEMZ 9C (R600a Inverter upgrade)
4. Donper KK73FT (R134a direct clone)
5. Jiaxipera NT1114Y (R600a equivalent cooling)

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Mbsmpro.com, Compressor, Danfoss, NL7.3FT, 1/4 hp, Secop, Cooling, R134a, 185 W, 1.3 A, 1Ph 220-240V 50Hz, LBP, RSIR, -35°C to -10°C, Freezing

The refrigeration industry relies heavily on the reliability of the heart of the system: the compressor. Among the elite performers in the domestic and light commercial sector, the Danfoss NL7.3FT stands out as a robust, European-engineered solution. Transitioning from the legacy Danfoss brand to Secop, this model remains a staple for technicians who demand durability and high thermal efficiency in low-temperature environments.

Efficiency Metrics (COP) & Performance Data

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-35	108	135	0.80
-30	145	158	0.92
-23.3	185	184	1.01
-20	225	205	1.10
-15	295	230	1.28
-10	380	255	1.49

Engineering Insight: Why the NL7.3FT?

As an engineer in the field, I’ve found that the NL7.3FT excels because of its internal suspension system. Unlike cheaper alternatives that vibrate excessively and cause copper fatigue, the Danfoss “NL” series uses a refined valve plate design that reduces noise while maintaining high volumetric efficiency.

When comparing it to the Embraco FFI series, the Danfoss NL7.3FT often shows a more stable performance under fluctuating voltage (220-240V range). It is specifically designed for LBP (Low Back Pressure), making it the ideal candidate for deep freezers where the goal is to reach -23°C quickly and hold it with minimal energy consumption.

Field Notes & Expert Advice

• Capillary Cleaning: If you are replacing a burnt-out NL7.3FT, always flush the system with R141b. R134a systems are prone to paraffin wax buildup in the capillary tube.
• Oil Management: This unit uses POE oil. Avoid leaving the suction ports open for more than 10 minutes, as POE oil is highly hygroscopic (it absorbs moisture from the air instantly).
• The LST/HST Factor: While rated for Low Starting Torque, adding a start capacitor (80µF) can convert this into a High Starting Torque unit, which is a lifesaver in regions with unstable power grids.

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Focus Keyphrase: Danfoss NL7.3FT Compressor R134a 1/4 HP Low Back Pressure Refrigeration

SEO Title: Mbsmpro.com | Danfoss NL7.3FT Compressor | 1/4 HP R134a LBP Technical Specs

Meta Description: Discover the full technical specifications of the Danfoss NL7.3FT compressor. Learn about its cooling capacity, 185W output, R134a compatibility, and cross-reference replacements for professional refrigeration repair.

Slug: danfoss-nl7-3ft-compressor-r134a-1-4-hp-specs

Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Danfoss NL7.3FT, Secop 105G6726, 1/4 HP Compressor, R134a LBP, Embraco NEK2125GK Replacement, Fridge Compressor Repair, NL7.3FT Specs, HVAC Engineering.

Excerpt: The Danfoss NL7.3FT is a high-performance LBP compressor designed for R134a refrigerant, delivering 185 Watts of cooling capacity at -23.3°C. Ideal for domestic freezers and light commercial units, this 1/4 HP motor offers exceptional reliability and low noise levels, making it a favorite for professional technicians and refrigeration engineers globally.