R134a, refrigerant, compressor GQR80TG, 220-240V 50Hz, MBP/HBP, 1/4+ hp

Description

Mbsm.pro: Compressor, SUB COOL/SIKELAN, GQR80TG, 1/4+ HP, 1Ph, 220-240V 50Hz, R134a, MBP/HBP, Commercial Refrigeration

Technical Specifications Table

Feature	Details
Model	GQR80TG
Brand	SUB COOL / SIKELAN / KONOR
Utilisation	MBP/HBP (Medium & High Back Pressure)
Domaine	Commercial Refrigeration / Light Freezing / Display Coolers
Cooling Wattage at -23.3°C	Approx. 400-450 W
Cooling Capacity at +7.2°C	810 W
Cubic Feet Capacity	8 to 14 cu. ft. (Depending on insulation)
Litres Capacity	220 to 400 Liters
Kcal/h	697 Kcal/h (at +7.2°C)
TON	~0.12 Tons
Oil Type and Quantity	POE (Polyolester), 380-420 ml
Horsepower (HP)	1/4+ HP (Approximately 0.28 HP)
Refrigerant Type	R134a
Power Supply	220-240V / 50Hz / 1Ph
Cooling Capacity BTU	2,750 BTU/h (at +7.2°C Rating)
Motor Type	CSIR (Capacitor Start – Induction Run)
Displacement	8.0-8.1 cm³
Winding Material	Copper
Pression Charge	10-14 Bar (High Side)
Capillary Recommendation	0.036″ or 0.040″ (Length varies by application)
Compatible Appliances	Mid-size refrigerators, beer displayers, commercial coolers, bottle chillers
Temperature Function	-20°C to +10°C
With Fan or No	Yes (Fan cooling required)
Commercial or No	Commercial Grade
Amperage (FLA)	1.8 A to 2.4 A
LRA (Locked Rotor Amps)	11-13 A
Type of Relay	PTC Relay or Current Relay
Starting Capacitor	Not Required (CSIR motor)
Running Capacitor	Not Required
COP	2.0-2.15 W/W
Net Weight	8.2 kg
Origin/Exporting	Manufactured in China

Efficiency Metrics (COP) Table

Performance varies based on operating conditions. Here is how the GQR80TG performs across the temperature spectrum:

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-25	280	295	0.95
-20	380	340	1.12
-15	500	385	1.30
-10	640	430	1.49
-5	800	475	1.68
0	980	520	1.88
5	1180	565	2.09
7.2	1310	610	2.15
10	1450	655	2.21

Replacement Models

Brand	Model Number
SUB COOL	GQR80TG
SIKELAN	GQR80TG, MQ-GQR80TG
KONOR	GQR80TG
Zanussi	GQR80TG
Secop	SC10G (similar capacity)

5 Replacements (Same R134a Gas)

1. Embraco NEK2121Z (Strong alternative, 1/4 HP, 9.27cc) www.ebay.com.au
2. Tecumseh TH271MS (Classic reliable swap, 1/4 HP)
3. Danfoss SC10G (Direct successor, similar displacement) www.coowor.com
4. Cubigel GL90AAA (Excellent commercial equivalent, 9.09cc)
5. Huayi HYE11YG (Budget-friendly alternative)

5 Replacements (Other Gas – R600a/R404A)

Note: Requires complete system flush and expansion valve/capillary adjustment.

1. Embraco EGU90HLP (R600a – Isobutane, very efficient, 1/5 HP)
2. Danfoss SC10CNX (R290 – Propane, high efficiency)
3. Tecumseh CAJ9480Z (R404A – Higher capacity)
4. Secop NL11FK (R600a compatible variant)
5. Cubigel HM90AA (R600a – Energy efficient)

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Focus Keyphrase: SUB COOL GQR80TG Compressor Specs and Replacements

SEO Title: Mbsm.pro – SUB COOL GQR80TG Compressor: 1/4+ HP R134a Technical Guide

Meta Description: Looking for GQR80TG specs? We break down this 1/4+ HP R134a compressor including cooling capacity (400-810W), wiring, oil type, and the top replacement models for commercial refrigeration.

Slug: sub-cool-gqr80tg-compressor-1-4-hp-r134a-specs

Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, SUB COOL, SIKELAN, KONOR, GQR80TG, R134a, 1/4 HP, MBP, HBP, NEK2121Z, TH271MS, SC10G, GL90AAA, Compressor Replacement, HVAC, Refrigeration Repair, Commercial Refrigeration

Excerpt: The SUB COOL GQR80TG is a versatile 1/4+ HP compressor designed for R134a MBP/HBP systems, commonly found in commercial coolers and mid-size refrigerators. This guide provides the full technical data sheet, including cooling capacity (400W to 810W depending on conditions), oil requirements (380-420ml POE), and a comprehensive list of compatible replacements for both R134a and modern alternative refrigerants to ensure your repair is successful.

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THG1374YFS, TH271-FS-316, refrigerant R134a, 220V 50Hz, LBP, 1/4 HP

Description

Mbsm.pro: Compressor, Tecumseh, THG1374YFS, TH271-FS-316, 1/4 HP, 1Ph, 220V 50Hz, R134a, LBP, Domestic Refrigeration

Technical Specifications Table

Feature	Details
Model	THG1374YFS / TH271-FS-316
Utilisation	LBP (Low Back Pressure)
Domaine	Domestic Refrigeration / Freezers
Cooling Wattage at -23.3°C	Approx. 192 W (ASHRAE) / 147 W (CECOMAF)
Cubic Feet Capacity	8 to 12 cu. ft. (Depending on insulation)
Litres Capacity	200 to 350 Liters
Kcal/h	170 Kcal/h (ASHRAE) / 126 Kcal/h (CECOMAF)
TON	~0.055 Tons
Oil Type and Quantity	POE (Polyolester), 243 ml
Horsepower (HP)	1/4 HP
Refrigerant Type	R134a
Power Supply	220V / 50Hz / 1Ph
Cooling Capacity BTU	675 BTU/h (ASHRAE) / 500 BTU/h (CECOMAF)
Motor Type	PTCS_IR (RSIR – Resistance Start Induction Run)
Displacement	6.96 cm³
Winding Material	Copper
Pression Charge	8-12 Bar (High Side)
Capillary Recommendation	0.031″ or 0.033″ (Length varies by application)
Compatible Appliances	Domestic refrigerators, small freezers, beverage coolers
Temperature Function	-34.4°C to -12.2°C (-30°F to 10°F)
With Fan or No	Yes (Fan cooling required)
Commercial or No	Domestic/Light Commercial
Amperage (RLA)	1.33 A (50Hz)
LRA (Locked Rotor Amps)	14 A
Motor Torque	LST (Low Start Torque)
Compressor Cooling	Fan
Weight	8 kg (18 lbs)
Voltage Range	180-242V (50Hz)
Motor Resistance – Main	10.92 Ohms
Motor Resistance – Start	20.08 Ohms
Oil Viscosity	32 cSt
Agency Approval	CE Listed, IMQ Listed, IRAM Listed
Origin/Exporting	Designed in USA / Manufactured in Brazil

Efficiency Metrics (COP) Table

Performance varies based on operating conditions. Here is how the THG1374YFS performs:

Test Condition	CECOMAF	ASHRAE
Evaporating Temp	-25°C (-13°F)	-23°C (-10°F)
Condensing Temp	55°C (131°F)	54°C (130°F)
Ambient Temp	32°C (90°F)	32°C (90°F)
Refrigeration Capacity (W)	147 W	198 W
Refrigeration Capacity (BTU/h)	500 BTU/h	675 BTU/h
Input Power (W)	157 W	163 W
Efficiency (W/W)	0.93	1.21
Efficiency (BTU/Wh)	3.18	4.14
Efficiency (Kcal/Wh)	0.80	1.04

Replacement Models

Brand	Model Number
Tecumseh	THG1374YFS, TH271-FS-316
Tecumseh	TH271MS316, TH271NS250
Embraco/Aspera	NEK2121Z (1/4 HP equivalent)
Cubigel	GL90AAA (1/4 HP equivalent)
Danfoss	NL7FK, NL9FK (similar capacity)
Secop	NL10MFX (similar application)

5 Replacements (Same R134a Gas)

1. Embraco NEK2121Z (Strong alternative, 1/4 HP, 9.27cc) www.orionairsales.co.uk
2. Cubigel GL90AAA (Excellent domestic equivalent, 9.09cc) www.aliexpress.com
3. Tecumseh THG1374YMS (Same series variant) www.scribd.com
4. Danfoss NL9FK (LBP application, similar capacity) www.orionairsales.co.uk
5. Embraco EM3Y60H (Compact 1/4 HP, 730 BTU/h) www.ebay.com

5 Replacements (Other Gas – R600a/R404A)

Note: Requires complete system flush and expansion valve/capillary adjustment.

1. Embraco EGU90HLP (R600a – Isobutane, very efficient, 1/5 HP) mbsmpro.com
2. Tecumseh CAJ9480Z (R404A – Higher capacity)
3. Danfoss FR8.5CLX (R600a – Propane alternative)
4. Secop NL11FK (R134a/R600a compatible variant)
5. Cubigel HM90AA (R600a – Energy efficient)

Key Features

• All compressors with individual packaging everwellparts.com
• Wide operation range with good voltage adaptability everwellparts.com
• Low noise and vibration everwellparts.com
• Designed for low back pressure (LBP) applications everwellparts.com
• Evaporating temperature range: -34.4°C to -12.2°C (-30°F to 10°F) www.mbsm.pro
• Thermally protected mbsmpro.com
• CE, IMQ, and IRAM certified www.mbsm.pro

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Focus Keyphrase: Tecumseh THG1374YFS Compressor Specs and Replacements

SEO Title: Mbsm.pro – Tecumseh THG1374YFS Compressor: 1/4 HP R134a LBP Technical Guide

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Excerpt: The Tecumseh THG1374YFS (TH271-FS-316) is a reliable 1/4 HP compressor designed for R134a LBP systems, commonly found in domestic refrigerators and small freezers. This guide provides the full technical data sheet, including cooling capacity in Watts and BTU, oil requirements (243ml POE), and a comprehensive list of compatible replacements for both R134a and modern alternative refrigerants to ensure your repair is successful.

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Mbsm.pro, Compressor, Jiaxipera, NX1122Y, 1/4 hp, R600a, 200 W, 0.9 A, 1Ph 220-240V 50Hz, LBP, RSCR, -35°C to -15°C, Freezing

The Jiaxipera NX1122Y is a powerhouse in the world of domestic refrigeration. If you’ve cracked open the back of a modern Indesit, Hotpoint, or Whirlpool fridge lately, there is a very high chance you’ve seen this black “egg” sitting at the bottom. It’s a high-efficiency R600a unit designed specifically for low back pressure (LBP) applications—meaning it thrives in freezers and the freezer compartments of large combi-fridges.

Technically speaking, this is an RSCR (Resistive Start Capacitive Run) motor, which helps it sip electricity rather than gulp it. With a displacement of 11.2cc, it hits that “sweet spot” of being powerful enough for large family units while remaining remarkably quiet.

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Technical Specifications: Jiaxipera NX1122Y

Feature	Specification Details
Model	NX1122Y
Utilisation	LBP (Low Back Pressure)
Domaine	Freezing / Deep Freezing
Cooling wattage at -23.3°C	198 – 205 Watts
Cubic feet (approx. cool)	14 to 18 cu.ft.
Litres (approx. cool)	400 – 500 Liters
Kcal/h	172 Kcal/h
TON (Refrigeration)	0.057 Ton
Oil Type and Quantity	Mineral / POE (approx. 180ml – 220ml)
Horsepower (HP)	1/4 HP
Refrigerant Type	R600a (Isobutane)
Power Supply	220-240V / 50Hz / 1 Phase
Cooling Capacity BTU	682 – 700 BTU/h
Motor Type	RSCR (Run Capacitor required)
Displacement	11.2 cm³
Winding Material	Copper
Pression Charge	Low Pressure (Suction)
Capillary Tube (Rec.)	0.031″ or 0.036″ (depending on length)
Refrigerator Models	Indesit, Ariston, Hotpoint, Whirlpool Bauknecht
Temperature Function	-35°C to -15°C
Fan Requirement	Static (No fan) or forced air depending on cabinet
Commercial use?	Primarily Domestic / Light Commercial
Amperage (Running)	0.85 A to 1.1 A
LRA (Locked Rotor Amps)	6.5 A
Type of Relay	PTC Start Relay
Capacitor Value	4µF or 5µF (Run Capacitor)
Country of Origin	China (Jiaxipera Compressor Co.)

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Efficiency Metrics (COP)

Knowing how the compressor performs under different thermal loads is key for any tech calibrating a system.

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-35	115	108	1.06
-30	152	125	1.21
-23.3	200	148	1.35
-20	228	160	1.42
-15	275	178	1.54
-10	335	200	1.67

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Replacement Guide

When you can’t find the exact Jiaxipera model, you need something that matches the displacement and the BTU output. Here are the best alternatives:

5 Replacements (Same Gas: R600a)

1. Embraco: EMY70CLP or EMY80CLP
2. Secop (Danfoss): TLES10KK.3
3. Siklan: GVY11AA
4. ACC / Cubigel: HMK12AA
5. Huayi: HYB11AA

5 Replacements (Other Gas: R134a)

Note: This requires a full system flush and oil check.

1. Embraco: EMT6170Z (Requires expansion valve/capillary adjustment)
2. Secop: TLES7.5FT.3
3. Jiaxipera: NT1114Z
4. ACC: GVY75AA
5. Tecumseh: THG1374YS

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Focus Keyphrase: Jiaxipera NX1122Y R600a Compressor 1/4 hp Specs and Replacement

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Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Jiaxipera, NX1122Y, R600a, Compressor, Refrigeration Repair, EMY70CLP, TLES10KK, HMK12AA, 1/4 HP, LBP, Fridge Parts

Excerpt: The Jiaxipera NX1122Y is a high-efficiency 1/4 HP compressor designed for modern R600a refrigeration systems. Commonly used in Whirlpool and Indesit appliances, it offers roughly 200W of cooling capacity at LBP conditions. This guide covers its full technical specifications, COP efficiency data, and provides a comprehensive list of compatible replacement models for technicians and DIY repair.

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Mbsmpro.com, Compressor, GQY80AT vs ATA72XL, 1/4 hp – 1/5 hp, ZEL, Huaguang, R134a, Cooling, 220V, LBP, Refrigerator Repair

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Technical Analysis of High-Performance Hermetic Compressors: GQY80AT and ATA72XL

In the world of refrigeration maintenance and professional appliance repair, choosing the right compressor is the difference between a long-lasting fix and a premature system failure. Today, we are diving deep into the technical specifications of two widely used units in the industry: the ZEL GQY80AT and the Huaguang ATA72XL. Both are designed for R134a refrigerant but serve slightly different cooling capacities and applications.

The GQY80AT, manufactured by Zanussi Elettromeccanica (ZEL), has long been a staple in European-designed domestic freezers and large refrigerators. It is a robust 1/4 HP unit known for its high starting torque and reliability in fluctuating voltage environments. On the other hand, the Huaguang ATA72XL is a highly efficient 1/5 HP+ (often treated as a strong 1/5 or light 1/4) compressor from the Wanbao Group. It is frequently seen in modern energy-efficient refrigerators where low noise and high Coefficient of Performance (COP) are prioritized.

Technical Specification Table

Model	ZEL GQY80AT	Huaguang ATA72XL
Utilization	LBP (Low Back Pressure)	LBP (Low Back Pressure)
Domaine	Freezing / Cooling	Freezing / Cooling
Cooling Wattage (-23.3°C)	198 W	185 W
Cubic Feet Capacity	12 – 16 cu.ft.	10 – 14 cu.ft.
Liters Capacity	350 – 450 L	280 – 400 L
Kcal/h	170 kcal/h	159 kcal/h
Oil Type & Quantity	POE (Ester) / 200ml	POE (Ester) / 180ml
Horsepower (HP)	1/4 HP	1/5 HP+
Refrigerant Type	R134a	R134a
Power Supply	200-220V / 50Hz	220-240V / 50-60Hz
Cooling Capacity (BTU)	676 BTU/h	631 BTU/h
Motor Type	RSIR / RSCR	RSIR
Displacement	8.1 cm³	7.2 cm³
Winding Material	Copper	Copper
Pressure Charge	0.5 – 0.8 Bar (Running)	0.4 – 0.7 Bar (Running)
Capillary Size	0.031″ / 3.0m	0.028″ / 3.0m
Temperature Function	-35°C to -10°C	-30°C to -10°C
Cooling Method	Static (No Fan)	Static (No Fan)
Commercial Use	Light Commercial/Domestic	Domestic
Amperage (FLA)	1.3 A	1.1 A
LRA (Locked Rotor)	12 A	10 A
Relay Type	PTC	PTC
Capacitor	Optional (4-5uF)	No
Origin	China (Zanussi Tech)	China (Wanbao)

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Efficiency Metrics (COP) Performance Data

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-30	145	125	1.16
-25	182	148	1.23
-23.3 (Standard)	198	155	1.27
-20	235	170	1.38
-15	305	195	1.56
-10	390	220	1.77

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Professional Replacement Guide

When the original unit is no longer available, these replacements offer the same displacement and cooling curve characteristics.

5 Direct Replacements (R134a Gas)

1. Embraco FFI7.5HAK: A heavy-duty 1/4 HP equivalent with high reliability.
2. Secop (Danfoss) TLES7F: Excellent efficiency for domestic LBP applications.
3. LG MA72LAEP: A very quiet alternative with similar mounting footprints.
4. Tecumseh THG1365YS: Known for high tolerance to high ambient temperatures.
5. Samsung NC44A94ALH: A compact but powerful alternative.

5 Alternative Replacements (R600a Gas Conversion)

Note: Converting to R600a requires a complete system flush and a dedicated R600a capillary/filter.

1. Secop TLES7.5KK.4: The industry standard for R600a 1/4 HP swaps.
2. Embraco EMX70CLC: High COP unit for energy-conscious repairs.
3. Jiaxipera NT1114Y: Widely used in modern inverter-to-fixed-speed conversions.
4. Donper LU72CZ1: A budget-friendly R600a unit with stable performance.
5. Wanbao ATA72XL (R600a Version): The direct isobaric sibling of the R134a model.

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Expert Engineering Insights & Tips

When installing these compressors, pay close attention to the displacement differences. The GQY80AT (8.1cc) is slightly more powerful than the ATA72XL (7.2cc). If you are replacing a ZEL with a Huaguang, the cooling might be slightly slower in a large chest freezer. Conversely, using a ZEL to replace a Huaguang may result in shorter cycle times, which can lead to higher wear on the relay if not monitored.

Technician’s Checklist:

• Triple Vacuum: Always pull down to 500 microns to ensure all moisture is removed from the POE oil.
• Filter Drier: Never reuse a filter. Always install a new 20g or 30g XH-9 molecular sieve drier.
• Winding Check: Before brazing, verify the Common, Start, and Main terminals. The GQY80AT has a standard triangular pin configuration.
• Heat Dissipation: Ensure the condenser coils are cleaned. These static-cooled compressors rely heavily on natural convection or the external cabinet skin for heat exchange.

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Focus Keyphrase: ZEL GQY80AT and Huaguang ATA72XL Compressor Specifications and Replacement Guide

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Meta Description: Detailed technical analysis of ZEL GQY80AT and Huaguang ATA72XL compressors. Includes BTU, wattage, cooling capacity, and 10 professional replacement models for R134a and R600a. Perfect for refrigeration engineers and professional technicians.

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Excerpt: Choosing between the ZEL GQY80AT and Huaguang ATA72XL requires a deep understanding of displacement and cooling wattage. This professional guide breaks down the 198W capacity of the GQY80AT versus the 185W of the ATA72XL, providing essential data for technicians, including oil types, motor configurations, and a comprehensive list of cross-compatible replacement models.

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, QB86C18GAX5, 1/4 hp, Panasonic, Cooling, R134a, 201 W, 1Ph, 220-240V 50Hz, LBP, RSIR, -35°C to -15°C, Freezing

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Technical Specifications Table

Feature	Details
Model	QB86C18GAX5
Utilisation	LBP (Low Back Pressure)
Domaine	Freezing / Deep Cooling
Oil Type and Quantity	Ester Oil (POE) / 230 ml
Horsepower (HP)	1/4 HP
Refrigerant Type	R134a
Power Supply	220-240V / 50Hz / 1PH
Cooling Capacity BTU	686 BTU/h (approx. 201W)
Motor Type	RSIR (Resistance Start – Induction Run)
Displacement	8.6 cm³
Winding Material	Copper
Pressure Charge	0.4 to 1.1 Bar (Suction Side)
Capillary Recommendation	0.036″ / 0.042″ (Dependent on cabinet size)
Refrigerator Models	Large domestic side-by-side, Chest Freezers, Display Chillers
Temperature Function	-35°C to -15°C
Fan Requirement	Optional (Static cooling usually sufficient)
Commercial Use	Light Commercial / Domestic High-Capacity
Amperage (RLA)	1.1A – 1.3A
LRA (Locked Rotor Amps)	8.0A
Type of Relay	PTC Relay
Capacitor	N/A (Standard RSIR)

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Compressor Cross-Reference (Same Gas – R134a)

1. Embraco: EGAS80HLR / FFI8.5HAK
2. Danfoss/Secop: TLES8.7F / NLE8.8FT
3. LG: MA88LAEP
4. Tecumseh: THG1374YS
5. Samsung: SK182H-L2U

Compressor Cross-Reference (Alternative Gas – R600a)

1. Panasonic: QB86C18GAX5 (R134a specific, use QB91 series for R600a equivalent)
2. Embraco: EM2X1121U
3. Secop: NLE11KK
4. Jiaxipera: NT1114Y
5. Donper: LU111CY

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Panasonic QB86C18GAX5: The Reliable Powerhouse of Tropical Refrigeration

In the demanding world of refrigeration, the Panasonic QB series has established itself as a benchmark for durability and thermal resilience. The QB86C18GAX5, a 1/4 HP unit, is a staple in high-capacity domestic refrigerators and light commercial freezers. Designed to operate under Low Back Pressure (LBP) conditions, this compressor is particularly favored in regions with high ambient temperatures due to its superior heat dissipation and robust motor design.

Performance and Efficiency

With a displacement of 8.6cc, the QB86C18GAX5 strikes a perfect balance between power consumption and cooling velocity. It provides a cooling capacity of approximately 201 Watts (686 BTU/h), which is the sweet spot for large family refrigerators or chest freezers. The RSIR (Resistance Start – Induction Run) motor ensures a simple electrical setup, reducing the points of failure compared to systems requiring complex start/run capacitors.

Comparison: Panasonic vs. Embraco & Secop

While the Embraco EGAS80HLR is often cited as a direct competitor, the Panasonic QB86C18GAX5 often wins on mechanical silence. Panasonic’s internal damping system is specifically engineered to reduce “knocking” sounds during the start-stop cycle. Compared to the Secop TLES8.7F, the Panasonic unit tends to handle voltage fluctuations slightly better, a critical factor for field technicians working in areas with unstable power grids.

Professional Installation & Maintenance Tips

• Oil Sensitivity: This compressor uses POE (Ester) oil. This oil is extremely hygroscopic (absorbs moisture quickly). Never leave the compressor open to the atmosphere for more than 10 minutes during installation.
• Vacuuming Protocol: A deep vacuum is non-negotiable. Moisture mixed with POE oil creates acid that will etch the copper windings and lead to a “grounded” compressor.
• Filter Drier Replacement: Always use a high-quality 20g or 30g drier. Given the 1/4 HP power, a larger drier ensures a cleaner system for a longer lifespan.

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Focus Keyphrase: Panasonic QB86C18GAX5 Compressor 1/4 HP R134a Specs

SEO Title: Mbsm.pro – Panasonic QB86C18GAX5 Compressor: 1/4 HP, R134a, Technical Data

Meta Description: Full technical review of the Panasonic QB86C18GAX5 compressor. 1/4 HP, R134a, 201W cooling capacity. Ideal for domestic refrigerators and freezers. Find equivalents and installation tips.

Slug: panasonic-qb86c18gax5-compressor-1-4hp-r134a-specifications

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Excerpt: The Panasonic QB86C18GAX5 is a 1/4 HP reciprocating compressor engineered for high-efficiency Low Back Pressure (LBP) applications. Using R134a refrigerant and a displacement of 8.6cc, it delivers a cooling capacity of 201W. This guide provides technicians with essential technical data, including amperage, displacement, and a comprehensive cross-reference list for modern repairs.

Focus Keyphrase: Donper S118CY1 Compressor R600a 1/4 HP LBP Refrigeration Specifications and Replacement Guide for Technicians and Engineers

SEO Title: Mbsmpro.com, Donper, S118CY1, Compressor, 1/4 HP, LBP, R600a, 210 W, 1Ph 220-240V 50Hz, Freezing and Cooling

Meta Description: Detailed technical analysis of the Donper S118CY1 compressor. Includes 1/4 HP power rating, R600a refrigerant specs, LBP application data, and equivalent replacement models for professional repair.

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Excerpt: The Donper S118CY1 compressor is a cornerstone of modern domestic refrigeration, engineered for high efficiency in Low Back Pressure (LBP) environments. Utilizing R600a refrigerant, this 1/4 HP unit provides reliable cooling for large household refrigerators and freezers. This guide explores its technical parameters, electrical requirements, and the best cross-reference alternatives for field technicians.

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Mbsmpro.com, Donper, S118CY1, Compressor, 1/4 HP, LBP, R600a, 210 W, 1.1 A, 1Ph 220-240V 50Hz, Cooling and Freezing

In the realm of hermetic refrigeration, the Donper S series has established a reputation for balancing cost-effectiveness with thermal durability. The S118CY1 model, specifically designed for R600a (isobutane) systems, represents a shift toward environmentally friendly refrigerants with low Global Warming Potential (GWP). As an engineer working in the field, understanding the nuances of this compressor is vital for ensuring system longevity and optimal thermodynamic performance.

Engineering Overview: The S118CY1 Architecture

The S118CY1 is a reciprocating piston compressor designed for Low Back Pressure (LBP) applications. This means it is optimized to operate at low evaporating temperatures, typically between -35°C and -15°C, making it the ideal “heart” for chest freezers and the freezer compartments of large side-by-side refrigerators. With a displacement of approximately 11.8 cm³, it delivers a cooling capacity that sits comfortably in the 1/4 HP category.

One of the defining features of this model is its thermal protection system. In high-ambient environments, compressors often face the risk of winding burnout. The S118CY1 incorporates an internal or external thermal protector that interrupts power if the internal temperature exceeds safety thresholds, a critical fail-safe for residential appliances.

Technical Specifications Table

Feature	Specification
Model	S118CY1
Utilisation	LBP (Low Back Pressure)
Domaine	Freezing / Deep Cooling
Oil Type and Quantity	Mineral or POE (Consult label), ~180ml – 220ml
Horsepower (HP)	1/4 HP
Refrigerant Type	R600a (Isobutane)
Power Supply	220-240V ~ 50Hz, 1 Phase
Cooling Capacity BTU	Approx. 715 BTU/h (at -23.3°C)
Motor Type	RSIR (Resistance Start – Induction Run)
Displacement	11.8 cm³
Winding Material	High-Grade Copper
Pressure Charge	Low side (suction) depends on ambient
Capillary Tube	0.031″ to 0.036″ (Internal Diameter)
Compatible Appliances	Large domestic refrigerators, display freezers
Temperature Function	-35°C to -15°C
Cooling Method	Static or Fan cooling (application dependent)
Commercial/Residential	Residential / Light Commercial
Amperage (RLA)	0.9 A – 1.2 A (running)
LRA (Locked Rotor Amps)	6.5 A – 7.5 A
Type of Relay	PTC Start Relay
Capacitor	Often not required (RSIR), optional Run Capacitor

Performance Comparison: R600a vs. R134a

When comparing the S118CY1 to its R134a counterparts (like the QD series), the thermodynamic efficiency of R600a becomes evident. R600a operates at lower pressures, which reduces the mechanical stress on the compressor valves and pistons. However, because R600a is flammable, the S118CY1 is built with “thermally protected” electrical components to prevent sparking in the event of a leak.

Cross-Reference and Replacement Guide

When a S118CY1 fails, finding an exact match is preferred, but field technicians often need equivalents based on local availability.

Top 5 Replacements (Same Refrigerant: R600a)

1. Embraco EMX70CLC: Known for extremely low noise levels and high COP.
2. Secop (Danfoss) NLY9.0R: A robust European alternative with excellent thermal management.
3. Jiaxipera NT1114Y: Widely used in high-end Samsung and LG units.
4. Huayi HYE11YG: A direct competitor with similar displacement and mounting footprints.
5. Sikolan ADW110: A reliable alternative for budget-friendly repairs.

Top 5 Replacements (Alternative Refrigerant: R134a)
Note: Replacing an R600a compressor with an R134a unit requires a complete system flush, oil compatibility check, and capillary tube adjustment.

1. Donper QD110: The R134a sibling to the S118 series.
2. Embraco GL90AA: A classic 1/4 HP+ LBP workhorse.
3. Secop TLY8.7KK: High-efficiency R134a unit.
4. ZMC GQR12AA: High displacement for heavy-duty cooling.
5. Tecumseh THG1374YS: American standard for 1/4 HP refrigeration.

Expert Field Advice and Notices

• Notice on R600a Safety: Always use a vacuum pump and charging station rated for flammable gases. Never use a torch (brazing) near an open R600a system; use Lokring fittings if possible or ensure the system is completely purged with Nitrogen.
• Capillary Maintenance: When replacing the S118CY1, always replace the filter drier. A clogged drier is the leading cause of premature compressor failure in R600a systems due to the formation of paraffin waxes at low temperatures.
• Winding Integrity: If you suspect a motor failure, check the resistance between the Common, Start, and Run pins. A healthy S118CY1 should show consistent readings without a “short to ground.”
• Mounting: Ensure the rubber grommets are in good condition. The S118CY1’s 11.8cc displacement creates specific harmonic vibrations that must be dampened to prevent copper pipe fatigue.

Benefit for the User

Choosing or replacing the Donper S118CY1 correctly ensures that the appliance maintains its energy rating. Using an undersized compressor will lead to “short-cycling” and high energy bills, while an oversized unit can cause evaporator icing. Following the 1/4 HP LBP specification ensures the evaporator remains at the precise delta-T required for food safety.

Focus Keyphrase: Matsushita Panasonic QA77C17GAX5 Refrigerator Compressor 1/4 HP R134a Specs and Cross-Reference

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Meta Description: Full technical breakdown of the Matsushita QA77C17GAX5 compressor. Learn about its 1/4 HP capacity, R134a requirements, and the best replacement models for fridge repairs.

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Excerpt: The Matsushita QA77C17GAX5 is a workhorse in the refrigeration world. This 1/4 HP R134a compressor is a go-to for many household fridges and freezers. In this guide, we break down the technical specs, electrical wiring, and the most reliable replacement options to help you get your cooling system back up and running fast.

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The Technician’s Take on the Matsushita QA77C17GAX5

When you spend enough time in the field, you start to recognize certain parts that just don’t quit. The Matsushita QA77C17GAX5 is one of those units. Produced by Panasonic, this compressor has been a standard in residential cooling for years. It’s a 1/4 HP unit designed for Low Back Pressure (LBP) applications, meaning it’s built to reach and hold those deep-freeze temperatures.

What makes this model interesting is its balance. It has a 7.7cc displacement, which is a sweet spot for R134a systems. It’s powerful enough for a full-sized family refrigerator but efficient enough that it doesn’t hammer the electric bill. From an engineering perspective, the RSIR motor is simple and reliable—fewer components like capacitors mean fewer things to fail in the heat of summer.

Real-World Performance

I’ve noticed that these compressors handle voltage dips better than many modern counterparts. While some high-efficiency units are sensitive to “dirty” power, the QA77 series is built like a tank. It delivers about 180 Watts of cooling power at standard ASHRAE conditions, making it a versatile choice for a wide range of kitchen appliances.

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Complete Technical Data Table

Data Point	Technical Specification
Model	QA77C17GAX5
Utilisation	LBP (Low Back Pressure)
Domaine	Freezing / Cooling
Oil Type and Quantity	POE (Polyolester) / 230ml
Horsepower (HP)	1/4 HP
Refrigerant Type	R134a
Power Supply	220V – 240V / 50Hz / 1 Phase
Cooling Capacity	614 BTU/h (180 Watts)
Motor Type	RSIR
Displacement	7.7 cm³
Winding Material	Copper
Typical Pressure	Suction: ~1 PSI / Discharge: ~140 PSI
Capillary Tube	0.031″ Internal Diameter
Common Usage	Household Fridges, Chest Freezers
Temp Range	-35°C to -10°C
Fan Requirement	Static Cooling (Natural Convection)
Type	Domestic / Light Commercial
Amperage	1.1A to 1.3A
LRA (Locked Rotor)	14.5 Amps
Relay Type	PTC
Capacitor	None (Standard configuration)

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Wiring and Electrical Logic

Working with the electrics on this unit is straightforward. It uses a three-pin terminal setup.

• Top Pin (Common): This is where your Overload Protector (OLP) sits. It’s the safety gate that shuts the compressor down if it gets too hot.
• Bottom Left/Right (Start & Run): The PTC relay slides onto these. When you power it up, the relay gives a quick “kick” to the Start winding and then lets the Run winding take over once the motor is spinning.

Pro Tip: If the compressor won’t start but it’s humming, check the PTC relay first. They often burn out before the motor does. Shake it—if it rattles like broken glass, it’s shot.

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How it Compares to Other Brands

Manufacturer	Competitor Model	Refrigerant	Capacity (Watts)
Matsushita	QA77C17GAX5	R134a	180 W
Embraco	FFI7.5HAK	R134a	193 W
Danfoss/Secop	TLS7FT	R134a	175 W
LG	MA72LCEP	R134a	185 W

Compared to the Embraco FFI7.5HAK, the Matsushita is slightly quieter but offers almost the same cooling torque. The Embraco might pull a vacuum a bit faster, but the Matsushita generally has a longer lifespan in high-ambient environments.

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Expert Maintenance Notice

1. Vacuum is Non-Negotiable: Because this unit uses POE oil, moisture is the enemy. POE oil absorbs water from the air, which creates acid inside the system. You must pull a deep vacuum before charging.
2. Filter Drier: Don’t be lazy—always swap the filter drier when you open the system. It’s the cheapest insurance policy you can buy for a new compressor.
3. Oil Warning: Never add mineral oil to this system. It will not mix with R134a and will eventually cause a blockage or mechanical failure.

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Recommended Replacements

If you can’t find the exact QA77C17GAX5, these models are the closest matches in terms of performance and fit.

Top 5 R134a Replacements:

1. Embraco: EGAS80HLR (Very common, easy to find)
2. Secop: NLE7.5FT.4 (Solid European alternative)
3. Jiaxipera: ND1112Y (Found in many newer fridges)
4. Huayi: HYE69YG (Budget-friendly and reliable)
5. Tecumseh: AE1380Y (Standard heavy-duty replacement)

5 Replacements for Other Gases (Retrofit):

Note: These require a full system flush and oil check.

1. R600a (Isobutane): Panasonic QB77C16GAX5
2. R290 (Propane): Embraco EMX40CLC
3. R404A: Secop SC10MLX (Only for commercial setups)
4. R12 (Old standard): PW7.5K14 (Hard to find now)
5. R1234yf: Secop YF7.5FT (New eco-friendly standard)

The Bottom Line: The Matsushita QA77C17GAX5 is a reliable, “old-school” quality compressor. Whether you are repairing an existing fridge or designing a small cooling system, it’s a solid choice that has proven itself in the field for decades. Keep it clean, keep the system dry, and it’ll run for years.

Mbsmpro.com, Compressor, Matsushita, D77C18RAX5, 1/4 hp, Panasonic, Cooling, R134a, 195 W, 1.4 A, 1Ph 220V 50Hz, LBP, RSIR, −35°C to −10°C, Household Refrigerator

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.

1. Always replace the Filter Drier: Never install a new D77 without a fresh XH-9 or universal drier.
2. 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.
3. 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.

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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
5 Remplacement (Other Gas)	Secop TLY8.7KK (R600a), Embraco EMX70CLC (R600a), Cubigel GL80AA (R134a/R600a conversion), Jiaxipera NT1114Y, Nidec TT1114GY

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Benefits of the D77C18RAX5

• 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.

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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.

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Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Matsushita, Panasonic, D77C18RAX5, 1/4 HP, R134a, LBP, Refrigerator Compressor, EG70HLR replacement, QD75 replacement, TLES7.5KK.3 replacement, MA72LAEG replacement, GVY75AA replacement.

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: 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.

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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.

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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:

1. C (Common): The apex pin. Connected to the line voltage through the internal Thermal Overload Protector.
2. M (Main/Run): Bottom-right pin. Connected to the Neutral line.
3. 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.

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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):

1. Zem/ACC: GL90AA
2. Embraco: EMT6170Z or FFI 7.5HAK
3. Secop (Danfoss): NL7F
4. Huayi: AE1380Y
5. Tecumseh: THB1375YSS

5 Compressor replacements in same value (R600a Conversion):
Notice: Conversion requires a full system flush and capillary adjustment.

1. TEE: NTU170MT
2. Cubigel: HMK12AA
3. Secop: HTK12AA
4. Huayi: HYB12MHU
5. Jiaxipera: NT1114Y

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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.