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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Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Tecumseh, THG1374YFS, TH271-FS-316, TH271MS316, R134a, 1/4 HP, LBP, Low Back Pressure, NEK2121Z, GL90AAA, NL9FK, Compressor Replacement, HVAC, Refrigeration Repair, Domestic Refrigerator

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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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

SEO Title: Mbsmpro.com, Compressor, GQY80AT, ATA72XL, 1/4 HP, R134a, Technical Data

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.

Focus Keyphrase: Donper LG83WZ1 Refrigeration Compressor Technical Specifications and R134a Replacement Guide

SEO Title: Mbsmpro.com, Compressor, LG83WZ1, 1/4 HP+, Donper, Cooling, R134a, 230 W, 1.4 A, 1Ph 220-240V 50Hz, LBP, Freezing

Meta Description: Explore the comprehensive technical specs for the Donper LG83WZ1 compressor. Includes cooling capacity, replacement cross-references, and performance data for R134a systems.

Slug: donper-lg83wz1-compressor-specifications-r134a-replacement

Tags: Donper, LG83WZ1, R134a, 1/4 HP+, Refrigerator Compressor, Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Embraco FFI8.5HAK, Secop NLE8.8MF, LG MA88LAEP, Panasonic QB86C16GAX5, Tecumseh THG1374YS, LBP Compressor

Excerpt: The Donper LG83WZ1 stands as a cornerstone in modern domestic and light commercial refrigeration. Engineered for Low Back Pressure applications, this R134a-driven unit provides reliable cooling capacity for medium to large refrigerators. Its 8.3cc displacement ensures consistent thermal management, making it a preferred choice for technicians seeking a robust, thermally protected motor for demanding climates.

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The Engineering Behind Reliability: A Deep Dive into the Donper LG83WZ1 Compressor

In the precision-driven world of refrigeration, the compressor is the heart of the thermal cycle. Among the workhorses found in modern residential and light commercial units, the Donper LG83WZ1 has earned a reputation for resilience and steady performance. As a Low Back Pressure (LBP) specialist, this model is specifically designed to handle the rigorous demands of freezing and deep-cooling applications where maintaining sub-zero temperatures is non-negotiable.

Technical Performance and Infrastructure

The LG83WZ1 utilizes R134a refrigerant, a long-standing industry standard known for its thermodynamic stability. With a displacement of 8.3 cm³, it sits comfortably in the 1/4 HP+ to 1/3 HP class, providing enough “muscle” for large household refrigerators or vertical display freezers. The motor is a single-phase, thermally protected unit operating on a standard 220-240V 50Hz supply, making it a universal fit for many international markets.

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Comprehensive Technical Specifications

Feature	Specification
Model	LG83WZ1
Utilization	LBP (Low Back Pressure)
Domaine	Freezing / Deep Cooling
Cooling Wattage at -23.3°C	230 W
Cubic Feet Capacity	14 – 18 cu.ft.
Liters Capacity	400 – 500 Liters
Kcal/h	198 Kcal/h
Oil Type and Quantity	Ester Oil (POE) / 180ml
Horsepower (HP)	1/4 HP+
Refrigerant Type	R134a
Power Supply	220–240V / 50Hz / 1Ph
Cooling Capacity (BTU/h)	785 BTU/h
Motor Type	RSIR / RSCR (depending on start kit)
Displacement	8.3 cm³
Winding Material	High-Grade Copper
Suction Pressure Charge	0.5 to 1.2 Bar (system dependent)
Capillary Recommendation	0.031″ or 0.036″ ID
Common Application	Double-door refrigerators, Chest Freezers
Temperature Function	-35°C to -15°C
Cooling Method	Static or Fan Assisted
Commercial Status	Semi-Commercial / Residential
Amperage (FLA)	1.4 A
LRA (Locked Rotor Amps)	11.5 A
Relay Type	PTC or Magnetic
Start Capacitor	Optional (usually 60-80 µF if used)
Origin	China (Global Export)

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Efficiency Metrics (COP)

Understanding the Coefficient of Performance (COP) is vital for energy-conscious engineering. The LG83WZ1 shows its strengths in the mid-range of LBP operations.

Evaporating Temp (°C)	Cooling Capacity (Watts)	Power Consumption (Watts)	COP (W/W)
-30	165	148	1.11
-25	215	165	1.30
-23.3 (ASHRAE)	230	172	1.34
-20	275	185	1.48
-15	345	205	1.68
-10	430	230	1.87

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Direct Replacement Cross-Reference

When a compressor fails in the field, speed and accuracy in replacement are paramount. Below are the most compatible units based on displacement and cooling capacity.

5 Replacements: Same Refrigerant (R134a)

Brand	Model	HP Equivalent	Displacement
Embraco	FFI8.5HAK	1/4 HP+	8.5 cm³
Secop	NLE8.8MF	1/3 HP	8.8 cm³
LG	MA88LAEP	1/4 HP+	8.8 cm³
Panasonic	QB86C16GAX5	1/4 HP+	8.6 cm³
Tecumseh	THG1374YS	1/4 HP	7.4 cm³

5 Replacements: Alternative Refrigerant (R600a)

Note: Converting from R134a to R600a requires a complete system flush, lubricant change, and capillary adjustment.

| Brand | Model | HP Equivalent | Gas Type |

| :— | :— | :— | :— |

| Embraco | EMX70CLC | 1/4 HP | R600a |

| Secop | TLES7.5KK.3 | 1/4 HP | R600a |

| LG | MK88LAEM | 1/4 HP+ | R600a |

| Donper | B80H | 1/4 HP | R600a |

| Jiaxipera | NT1114Y | 1/4 HP | R600a |

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Comparative Analysis: R134a vs. R600a Performance

While the LG83WZ1 uses R134a, the industry is shifting toward R600a (Isobutane). Comparing these two helps technicians understand why the LG83WZ1 remains a staple for repairs:

• Pressure: R134a operates at higher discharge pressures than R600a, allowing for faster heat transfer in smaller condenser coils.
• Charge Weight: R134a systems require a higher gram-weight charge than R600a, making the LG83WZ1 less sensitive to minor leaks.
• Oil Compatibility: The LG83WZ1 uses POE (Polyolester) oil, which is highly hygroscopic. Unlike the mineral oils used in R600a units, the LG83WZ1 requires strict moisture control during service.

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Electrical Schematic and Wiring Guide

For field workers, identifying the terminal configuration is the first step to a successful installation. The LG83WZ1 typically follows the standard triangular pin layout.

Engineering Tip: Always verify the resistance between the Start (S), Main (M), and Common (C) terminals. On the LG83WZ1, the Main winding typically shows lower resistance than the Start winding.

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Field Advice and Professional Notices

• Vacuum Integrity: Because this compressor uses Ester oil, you must pull a vacuum to at least 500 microns. Moisture reacting with POE oil creates acid that can etch the motor windings, leading to premature burnout.
• Filter Drier Replacement: Never install a new LG83WZ1 without replacing the filter drier. A clogged drier is the number one cause of high head pressure and motor failure.
• Condenser Maintenance: In commercial settings, ensure the condenser fins are cleaned every six months. The LG83WZ1 is robust, but excessive heat from a dirty condenser will trip the thermal protector and reduce the unit’s lifespan.

Benefits for the End User

1. Low Noise Floor: Designed with internal dampening springs to reduce vibration.
2. High Torque Start: Capable of starting under moderate pressure fluctuations, making it reliable in regions with unstable power grids.
3. Longevity: When paired with a clean system, these compressors are known to exceed 10 years of service life.

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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

SEO Title: Mbsmpro.com | ZMC GL90TB Compressor | 1/4 HP HBP R134a Specs

Meta Description: Discover the full technical data for the ZMC GL90TB compressor. 1/4 HP, R134a, High Back Pressure unit for commercial cooling. Includes COP tables and replacement guides.

Slug: zmc-gl90tb-compressor-1-4-hp-r134a-specs-replacement

Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, GL90TB, ZMC, Compressor, R134a, 1/4 HP, HBP, NEK6210Z, FR8.5G, CAE4440Y, Commercial Cooling, Refrigeration Parts Egypt.

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

Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Panasonic, QB86C18GAX5, 1/4 HP, R134a, LBP, EGAS80HLR, FFI8.5HAK, TLES8.7F, MA88LAEP, THG1374YS, SK182H-L2U, Refrigeration Repair, Compressor Replacement.

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.

Slug: donper-s118cy1-compressor-r600a-1-4-hp-specs

Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Donper, S118CY1, R600a, Compressor, 1/4 HP, LBP, Refrigeration, Embraco EMX70CLC, Secop NLY90R, Jiaxipera NT1114Y, Huayi HYE11YG, Cubigel GL90AA

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: 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.

Slug: donper-s118cy1-compressor-r600a-1-4-hp-specs

Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Donper, S118CY1, R600a, Compressor, 1/4 HP, LBP, Refrigeration, Embraco EMX70CLC, Secop NLY90R, Jiaxipera NT1114Y, Huayi HYE11YG, Cubigel GL90AA

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

SEO Title: Mbsm.pro, Compressor, QA77C17GAX5, 1/4 hp, Matsushita, Cooling, R134a, 180 W, 1.2 A, 1Ph 220-240V 50Hz, LBP, RSIR

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.

Slug: matsushita-qa77c17gax5-compressor-specifications-guide

Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Matsushita, Panasonic, QA77C17GAX5, R134a, 1/4 HP, LBP, Refrigerator Repair, Compressor Replacement, Embraco, Secop, Danfoss, LG, Tecumseh, Fridge Parts

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.

---

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.

---

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.

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

SEO Title: Mbsm.pro, Compressor, QA77C17GAX5, 1/4 hp, Matsushita, Cooling, R134a, 180 W, 1.2 A, 1Ph 220-240V 50Hz, LBP, RSIR

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.

Slug: matsushita-qa77c17gax5-compressor-specifications-guide

Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Matsushita, Panasonic, QA77C17GAX5, R134a, 1/4 HP, LBP, Refrigerator Repair, Compressor Replacement, Embraco, Secop, Danfoss, LG, Tecumseh, Fridge Parts

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.

---

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.

---

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.