Mbsmpro.com, Compressor, Siberia, GFF57AA, 1/5 hp, Cooling, R134a, 166 W, 220-240V 50Hz, LBP, RSIR, -35°C to -15°C, Freezing

Technical Specifications Table

Feature	Specification
Model	GFF57AA (Siberia / Bingfeng)
Utilization	LBP (Low Back Pressure)
Field of Application	Freezing and Deep Cooling
Oil Type and Quantity	Ester Oil (POE), 180ml – 200ml
Horsepower (HP)	1/5 HP
Refrigerant Type	R134a
Power Supply	220-240V ~ 50Hz
Cooling Capacity	166 W / 566 BTU/h (ASHRAE)
Motor Type	RSIR (Resistive Start, Inductive Run)
Displacement	5.70 cm³
Winding Material	Copper/Aluminum Alloy (Model specific)
Charge Pressure (Low Side)	0.5 to 1.5 PSI (Running)
Capillary Tube Recommendation	0.031″ ID (approx. 2.5m – 3m based on application)
Compatible Equipment	Domestic Refrigerators, Chest Freezers, Water Dispensers
Evaporating Temperature Range	-35°C to -15°C (-31°F to 5°F)
Cooling Method	Static Cooling (No fan required for compressor body)
Commercial Classification	Residential / Light Commercial
Operating Amperage	1.1 A to 1.3 A
LRA (Locked Rotor Amps)	8.5 A
Type of Relay	PTC Start Relay
Capacitor Requirement	Usually None (RSIR); Optional 4µF-5µF for Efficiency

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Compressor Cross-Reference (Direct Replacements)

5 Replacements in the Same Gas (R134a):

1. Embraco: EMT56CLP
2. Secop (Danfoss): TLES5.7FT.3
3. ZMC: GLY60AA
4. Jiaxipera: ND1112Y
5. Huayi: HYE55ANL

5 Replacements in Different Gas (R600a Conversion – Requires system flush):

1. Embraco: EMX55CLC
2. Secop: TLES5.7KK.3
3. Donper: S65CY
4. Siberia: GFT57AA (R600a version)
5. Jiaxipera: NT1112Y

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Mbsmpro.com, Compressor, GFF57AA, 1/5 hp, Siberia, Cooling, R134a, 166 W, 1.2 A, 1Ph 220-240V 50Hz, LBP, RSIR, -35°C to -15°C

In the world of domestic refrigeration, reliability is measured by the silence and efficiency of the compressor. The Siberia GFF57AA stands out as a high-performance hermetic reciprocating compressor specifically engineered for Low Back Pressure (LBP) applications. Manufactured by the renowned Zhejiang Bingfeng group, this unit has become a staple for technicians looking for a robust 1/5 HP solution in modern household appliances.

Engineering Mastery: The 5.7cc Displacement

The GFF57AA utilizes a 5.70 cm³ displacement, which is the “sweet spot” for medium-sized household refrigerators and chest freezers. Unlike larger industrial units, this compressor focuses on thermal stability. In LBP environments, where evaporating temperatures drop as low as -35°C, the internal motor must manage significant pressure differentials without overheating. The RSIR motor configuration ensures a simplified electrical setup, reducing the points of failure by eliminating the need for complex run capacitors in standard configurations.

Performance Comparison: R134a vs. R600a Alternatives

While the industry has seen a shift toward R600a (Isobutane), the R134a GFF57AA remains vital for the service and repair of millions of existing units.

• Volumetric Efficiency: R134a provides a higher cooling capacity per unit of displacement compared to R600a.
• Operating Pressures: The GFF57AA operates at higher discharge pressures than its R600a counterparts, which allows for smaller condenser footprints in compact refrigerator designs.

Electrical Schema and Terminal Logic

For the field engineer, understanding the terminal layout is essential for troubleshooting. The GFF57AA follows the standard triangular terminal configuration:

• Common (C): Top pin (standard orientation).
• Start (S): Typically the right-hand pin.
• Main (M/Run): Typically the left-hand pin.

Maintenance Wisdom for Technicians

To maximize the lifespan of the Siberia GFF57AA, pay close attention to the Starting Device. The PTC (Positive Temperature Coefficient) relay is the most common failure point. If the compressor hums but fails to start, always check the PTC resistance before condemning the motor windings. Furthermore, since this is a static-cooled compressor, ensuring adequate airflow around the refrigerator’s rear compartment is the single best way to prevent thermal overload and oil breakdown.

Notice: Always ensure the system is vacuumed to at least 500 microns before charging with R134a to prevent moisture-related capillary blockage, a common issue in LBP systems using POE oils.

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Focus Keyphrase: Siberia GFF57AA Compressor

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Meta Description: Detailed technical guide for the Siberia GFF57AA 1/5 HP compressor. Includes cooling capacity (166W), R134a specs, replacement models, and electrical wiring data for technicians.

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Tags: Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, Siberia GFF57AA, Bingfeng Compressor, 1/5 HP Compressor, R134a LBP, EMT56CLP replacement, GLY60AA replacement, Refrigerator Repair, HVAC Engineering.

Excerpt: The Siberia GFF57AA is a high-performance 1/5 HP hermetic reciprocating compressor designed for Low Back Pressure (LBP) applications. Utilizing R134a refrigerant and a 5.7cc displacement, it provides a reliable cooling capacity of 166W. This unit is widely used in domestic freezers and refrigerators, offering a robust RSIR motor for 220-240V 50Hz electrical systems.

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

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

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

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

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

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

Technical Specifications and Performance Data

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

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

Efficiency Metrics (COP) and Performance Curve

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

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

Application and Capability

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

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

Comparison: QD65H vs. Similar Models

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

Professional Recommendations and Installation Notes

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

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Replacement Guide (Equivalents)

Same Refrigerant (R134a):

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

Alternative Refrigerant (R600a/R12/Other):

Note: Requires system flush and oil check.

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

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

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

The codes L55AV and QD59H refer to specific types of refrigerator compressors utilized in household and small-scale commercial cooling systems. Below is a detailed breakdown of the manufacturing materials and technical specifications for each model:

1. L55AV Compressor

The L55AV is a compressor manufactured by Cubigel (currently part of the Huayi Group). It is specifically designed to operate with the legacy R12 refrigerant (or its retrofitted substitutes) and features an approximate capacity of 1/6 HP.

Primary Manufacturing Materials:

• Outer Shell (Housing): Constructed from deep-drawn carbon steel, which is coated with a specialized layer to resist rust and harsh environmental conditions.
• Electric Motor: Comprised of a core made from silicon steel laminations and windings of high-purity copper. (While some modern “economy” versions may use aluminum, copper remains the standard for original high-performance models).
• Pumping Mechanism (Cylinder and Piston): Typically manufactured from corrosion-resistant Cast Iron to ensure durability against friction and extreme heat.
• Crankshaft: Made of alloy steel or heat-treated cast iron for structural integrity.
• Valves: Fabricated from high-flexibility Spring Steel to withstand thousands of rapid opening and closing cycles.

2. QD59H Compressor

The QD59H is a widely distributed compressor manufactured by Huayi and other global producers. It is designed primarily for R134a refrigerant and maintains a capacity of approximately 1/6 HP.

Manufacturing Materials and Technical Features:

• Internal Components: Largely similar to the L55AV, utilizing cast iron for the piston/cylinder assembly and heavy-duty steel for the external shell.
• Motor Windings: Predominantly copper to guarantee high energy transmission efficiency and optimized power consumption.
• Suspension System: Features internal steel springs designed to absorb operational vibrations and minimize noise levels.
• Specialized Materials: Some technical reports for modern QD59H iterations indicate the use of ceramic balls in specific bearing types to reduce friction and extend service life, alongside gaskets made of advanced polymers.

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Material Comparison Summary Table

Component	Common Materials (L55AV & QD59H)
Outer Shell	Coated Carbon Steel
Motor Windings	Pure Copper (Rarely Aluminum)
Piston & Cylinder	Cast Iron
Valves	Stainless Steel / Spring Steel
Refrigerant Gas	R12 (L55AV) / R134a (QD59H)
Insulation	Mineral/Synthetic Oil and Paper/Plastic motor insulators

Focus Keyphrase: L55AV and QD59H Refrigerator Compressor Technical Specifications and Performance Comparison

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Excerpt: The L55AV and QD59H are cornerstone compressors in the domestic refrigeration industry, both rated at 1/6 HP. While the L55AV traditionally operates with R12, the QD59H is the modern R134a standard. This article provides deep technical data, electrical wiring diagrams, and professional comparison tables for field technicians and refrigeration engineers seeking reliable data.

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Mbsm.pro, Compressor, L55AV, QD59H, 1/6 hp, Cooling, R12, R134a, 160 W, 1.1 A, 1Ph 220‑240V 50Hz, LBP, RSIR, −35°C to −10°C

In the demanding field of refrigeration maintenance and engineering, the reliability of a compressor defines the lifespan of the appliance. Today, we analyze two workhorses of the industry: the L55AV and the QD59H. As an engineer who has spent years in the workshop and on-site, I can testify that understanding the subtle metallurgical and chemical differences between these two models is the difference between a successful repair and a repetitive failure.

The Technical Evolution: L55AV and QD59H

The L55AV (often associated with brands like Cubigel, Zem, or Huayi) is a classic reciprocating compressor. Historically, it was the go-to choice for units using R12 refrigerant. On the other hand, the QD59H represents the modern shift, optimized for R134a. Both are classified as LBP (Low Back Pressure) units, typically found in household refrigerators and medium-sized chest freezers.

Technical Specifications Table

Characteristic	L55AV Model	QD59H Model
Horsepower (HP)	1/6 HP	1/6 HP
Displacement	5.44 cm³	5.9 cm³
Refrigerant Type	R12 / R406a	R134a
Cooling Capacity	130W – 145W	160W – 165W
Voltage Range	220-240V / 50Hz	220-240V / 50Hz
Motor Type	RSIR (Relay Start)	RSIR / RSCR
Evaporating Temp	-35°C to -10°C	-35°C to -15°C
Oil Type	Mineral	POE / Synthetic

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Engineering Comparison: Displacement vs. Efficiency

When comparing these two, a critical factor for the field worker is the Displacement. The QD59H offers a slightly larger displacement at 5.9 cm³ compared to the 5.44 cm³ of the L55AV. This allows the QD59H to achieve a higher cooling capacity (approx. 160W) while maintaining a standard 1/6 HP footprint.

Value Comparison with Similar Models

Model	HP Rating	Gas Type	Capacity (W)	Efficiency (COP)
L55AV	1/6	R12	145	1.15
QD59H	1/6	R134a	165	1.22
GL60AA	1/6	R134a	155	1.20
FN66Q	1/6	R12	140	1.10

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Electrical Schema and Wiring Configuration

For the electric setup, these models generally utilize the RSIR (Resistance Start Induction Run) system. Below is the typical connection logic:

1. Common (C): Top pin of the compressor triangle.
2. Start (S): Connected to the PTC starter or electromagnetic relay.
3. Run (R): Main power line connected directly to the winding.

Note for Technicians: Always verify the resistance between C-S and C-R. The Start winding (C-S) will always show a higher resistance than the Run winding (C-R). If you are replacing an L55AV with a modern QD59H, ensure your Overload Protector (OLP) is matched to the 1.1A to 1.3A running current of the new unit.

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Field Worker’s Advice: Professional Installation Tips

• System Flushing: If you are replacing an old L55AV (R12) with a QD59H (R134a), you must flush the evaporator and condenser with R141b. R12 systems use mineral oil, which is incompatible with the POE oil found in R134a compressors. Mixing them creates an acidic sludge that will choke your capillary tube.
• Vacuum Procedure: Never settle for a “short vacuum.” Because the QD59H uses synthetic oil, it is highly hygroscopic (absorbs moisture). A minimum vacuum of 500 microns is recommended to ensure system longevity.
• Filter Drier: Always install a new XH-9 molecular sieve filter drier when switching to R134a.

Benefits of the QD59H over Older Models

1. Lower Noise Profile: The internal suspension of the QD59H is designed with high-tension springs that reduce “chatter” during start-stop cycles.
2. Environmental Compliance: Moving away from R12 reduces ODP (Ozone Depletion Potential).
3. Thermal Stability: The windings in the QD59H are often insulated with higher-grade polymers that resist burnout during voltage fluctuations common in 220V grids.

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Technical Catalogs and Resources

For engineers requiring the full manufacturer curves and torque data, you can refer to the following official documentation (Ensure you are using a secure browser):

• Mbsm.pro Technical Archive for L55AV

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Final Notice: When working on these projects, always verify the LRA (Locked Rotor Amps) on the nameplate. For a 1/6 HP unit like the QD59H, it should typically range between 6A and 8A. If your reading is higher, check for mechanical binding or a faulty start capacitor. Be smart, be an engineer, and prioritize system cleanliness above all else.

Focus Keyphrase: Compressor MAF QD59H HM for Ideal 8-foot Refrigerator Technical Specifications and Compatibility Guide

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Meta Description: Discover if the MAF QD59H HM Comptek compressor is the right fit for your Ideal 8-foot refrigerator. Comprehensive technical specs, 1/6 HP performance, and engineering tips.

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Excerpt: Choosing the correct compressor for a classic Ideal 8-foot refrigerator requires technical precision. The MAF QD59H HM, a robust 1/6 HP unit by Comptek, is a frequent candidate for these repairs. This article explores the mechanical compatibility, electrical requirements, and performance values necessary to ensure a long-lasting and efficient cooling system restoration.

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The Engineering Guide to Compressor MAF QD59H HM: Performance and Compatibility for Ideal 8-Foot Refrigerators

In the world of domestic refrigeration maintenance, the Ideal 8-foot refrigerator remains a legendary appliance known for its sturdy build. However, when the heart of the system—the compressor—fails, selecting a modern replacement requires an understanding of displacement, cooling capacity, and motor torque. The MAF QD59H HM, manufactured by Comptek, is a specialized L/MBP (Low/Medium Back Pressure) unit designed for R134a systems.

Technical Breakdown: MAF QD59H HM Characteristics

The MAF QD59H HM is engineered for efficiency. As a 1/6 HP class compressor, it provides the necessary thermal displacement to handle the internal volume of an 8-cubic-foot unit without overstressing the condenser coils.

Table 1: Technical Specifications

Feature	Specification
Model	MAF QD59H HM
Brand	Comptek / GR
Horsepower (HP)	1/6 HP
Refrigerant	R134a
Voltage/Frequency	220-240V ~ 50Hz
Phase	1 PH (Single Phase)
Application Range	L/MBP (Low/Medium Back Pressure)
Motor Type	RSIR / CSIR (Depending on Starter Kit)
Starting Torque	HST (High Starting Torque)
Cooling Capacity	~150W – 165W (at -23.3°C LBP)

Is it Compatible with an Ideal 8-Foot Refrigerator?

The short answer is yes. An 8-foot refrigerator typically requires between 1/8 HP and 1/6 HP. Using the MAF QD59H HM ensures that the system reaches the desired temperature quickly, even in high-ambient-temperature environments.

The HST (High Starting Torque) designation is particularly beneficial. In many regions where voltage can fluctuate or where the refrigerator is opened frequently, an HST motor ensures the compressor starts reliably against the pressure of the refrigerant without tripping the thermal overload protector.

Comparative Analysis: Displacement vs. Cooling Efficiency

When comparing the MAF QD59H HM to other common industry standards like the Danfoss or Embraco equivalents, we see a focus on balancing energy consumption with cooling speed.

Table 2: Comparison with Equivalent Models

Compressor Model	Displacement (cc)	Cooling Capacity (W)	Efficiency (COP)
Comptek MAF QD59H	5.9	158	1.25
Embraco EMT56CLP	5.6	145	1.22
Danfoss TL5G	5.0	135	1.18
ZMC GM70AZ	6.5	170	1.28

Engineering Insights: Wiring and Installation

For the field technician, the electrical configuration is standard but requires precision. Below is the typical schematic logic for the MAF series.

Electrical Connection Schematic:

1. Common (C): Connected to the Internal/External Overload Protector.
2. Main/Run (R): Connected to the Neutral line.
3. Start (S): Connected via the PTC (Positive Temperature Coefficient) or Start Capacitor.

Notice: Always ensure the suction tube is identified correctly (marked by an arrow on the label) to prevent oil slugging into the manifold during the first start-up.

Professional Advice for Maximum Longevity

• System Flushing: Before installing the MAF QD59H HM, always flush the evaporator and condenser with R141b to remove old mineral oil or carbon deposits.
• Capillary Tube Check: For an 8-foot Ideal fridge, ensure the capillary tube is not restricted. A restricted tube will cause the HST motor to overheat.
• Vacuuming: Achieve a vacuum of at least 500 microns to ensure the R134a/POE oil environment remains moisture-free.
• Filter Drier: Always replace the filter drier with a high-quality 20g or 30g XH-9 molecular sieve drier.

Benefits of Using the MAF QD59H HM

• Thermal Stability: Excellent heat dissipation during long run cycles.
• Quiet Operation: Low vibration levels compared to older reciprocating models.
• Versatility: Suitable for both freezers and standard refrigerators due to its L/MBP range.

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Expert Notice: While the MAF QD59H HM is a robust replacement, always verify the original nameplate of the refrigerator. If the original compressor was significantly larger (e.g., 1/4 HP), a QD59H may lead to extended run times. However, for the standard Ideal 8ft model, this unit remains a top-tier engineering choice.