Mbsmpro.com, Danfoss, GL45AA, 1/8 hp, LBP, Cooling, R134a, 81-96 W, 0.69-0.71 A, 1Ph 220‑240V 50Hz, LBP, RSIR, −35°C to −10°C, Freezing

Complete Technical Specifications

Specification	Details
Model	GL45AA (also known as GL45AAa/GL45AAb)
Utilisation (mbp/hbp/lbp)	LBP (Low Back Pressure)
Domaine (Freezing/Cooling)	Freezing and Cooling
Cooling wattage at -23°C	96 W (ASHRAE conditions) refritech.co.uk
Cubic feet can this compressor cool?	Approximately 3-5 cubic feet
Litres can this compressor cool?	85-140 liters
Kcal/h	96 kcal/h (ASHRAE), 70-96 kcal/h range www.skh-kaeltetechnik.de
TON	0.023 tons (approximately 1/43 HP refrigeration)
Oil Type and quantity	ISO VG 19-32 ESTER, 175-265 cm³ www.skh-kaeltetechnik.de
Horsepower (HP)	1/8 HP (0.125 HP / 0.15 CV)
Refrigerant Type	R134a (compatible with R1234yf)
Power Supply	220-240V 50Hz, 1 Phase
Cooling Capacity BTU	327-383 BTU/h (depending on conditions)
Motor Type	RSIR (Resistance Start Induction Run)
Displacement	4.56 cm³ (4.56cc) www.scribd.com
Winding Material	Copper
Pressure Charge	Pre-charged from factory
Capillary	Capillary tube expansion system
Model Fridge or refrigerator can work with this compressor	Household refrigerators, beverage coolers, wine coolers, water dispensers, beer dispensers, ice makers, small freezers www.dtngroup.ro
Temperature function	-35°C to -10°C evaporating temperature www.skh-kaeltetechnik.de
With fan or no	Static cooling (no fan on compressor)
Commercial or no	Both commercial and domestic applications
Amperage in function	0.69-0.71 A running, 7.5 A locked rotor www.skh-kaeltetechnik.de
LRA (Locked Rotor Amps)	7.5 A
Type of relay	PTC relay (PTC 3003 – K100) www.skh-kaeltetechnik.de
Capacitor or no and value	Starting capacitor 47-56 μF 330V (for CSIR version)
Country of origin and exporting countries	Made in Spain by Huayi, exported worldwide

Efficiency Metrics (COP) Performance Table

The GL45AA’s performance varies depending on operating conditions. Here’s how it performs across different evaporating temperatures:

Evaporating Temp (°C)	-30	-25	-23.3	-20	-15	-10	0	4	10
Cooling Capacity (Watts)	60	86	96	117	154	195	–	–	–
Power Consumption (Watts)	87	100	105	115	133	153	–	–	–
COP (W/W)	0.80	1.00	1.06	1.18	1.34	1.48	–	–	–
Current (A)	0.65	0.69	0.71	0.75	0.80	0.87	–	–	–

Test conditions: Condensing temp 55°C, Ambient 32°C, ASHRAE standards

www.skh-kaeltetechnik.de

Detailed Performance at Different Conditions

CECOMAF Standards (LBP Applications)

Condition	Value
Cooling Capacity at -25°C	81 W
Input Power	100 W
COP	0.81 W/W
Current Draw	0.69 A
EER	0.70 kcal/Wh

ASHRAE Standards (LBP Applications)

Condition	Value
Cooling Capacity at -23.3°C	96 kcal/h (112 W)
Input Power	105 W
COP	1.06 W/W
Current Draw	0.71 A
EER	0.91 kcal/Wh

Physical Dimensions & Weight

Dimension	Measurement
Net Weight	8.0-8.3 kg
Height	175-176 mm
Diameter	19.09 mm (cylinder)
Stroke	15.94 mm
Suction Line ID	6.5 mm
Discharge Line ID	4.9 mm
Mounting	Standard Ø16 holes (170×70 mm)

Electrical Specifications

Parameter	Value
Voltage Range	187-264 V
Frequency	50 Hz
Phase	Single Phase (1PH)
Main Winding Resistance	24.57-25.00 Ω @ 25°C
Start Winding Resistance	30.00-32.63 Ω @ 25°C
Locked Rotor Current	7.5 A
Max Continuous Current	1.0 A
Thermal Protector	MRP318LZ / T0453 / AF37FU

Where You’ll Find This Compressor

The GL45AA is incredibly versatile and shows up in all sorts of cooling equipment:

• Household refrigerators (small to medium size)
• Beverage coolers and drink dispensers
• Wine coolers (compact units)
• Water dispensers and coolers
• Beer dispensers and kegerators
• Ice makers (small commercial units)
• Vending machines (beverage type)
• Mini bars and hotel refrigerators
• Display cases (small merchandisers)

This compressor is particularly popular because it handles the -35°C to -10°C temperature range beautifully, making it perfect for both refrigeration and light freezing applications

www.dtngroup.ro.

5 Compressor Replacements (Same R134a Gas)

If your GL45AA has given up the ghost, here are five solid replacements that use the same R134a refrigerant:

1. B48H (Cubigel/Huayi) – The official replacement for GL45AA, works with both R134a and R1234yf frigopartners.com
2. GVM38AA (Cubigel) – Direct equivalent, same specifications www.prokes-auto.com
3. GLY45AAA (Cubigel) – Alternative version with HE static cooling www.airefrig.com.au
4. EMI45HHR (Embraco) – 1/8 HP R134a LBP compressor, similar capacity
5. TFS4-5FT (Secop/Danfoss) – 1/8 HP R134a, 477 BTU LBP rating mccombssupply.com

5 Compressor Replacements (Different Refrigerant)

Looking to upgrade or switch refrigerants? Here are alternatives using different gases:

1. R600a Compressors – More eco-friendly, better efficiency (requires system conversion)
2. R290 (Propane) Models – Natural refrigerant option (requires major system modification)
3. B38G (Huayi) – R134a but HBP configuration for different applications frigopartners.com
4. R1234yf Compatible Units – Newer refrigerant, B48H already supports this frigopartners.com
5. CO2 (R744) Systems – Commercial alternative (complete system redesign needed)

Important note: Changing refrigerants isn’t just a swap-and-go situation. You’ll need to consider oil compatibility, expansion device changes, and possibly even different tubing materials. Always consult with a certified refrigeration technician before making refrigerant changes.

Installation Tips

When replacing your GL45AA, keep these pointers in mind:

• The compressor uses a PTC relay (PTC 3003 – K100) – make sure it’s in good condition
• Check your capillary tube – it should match the original specifications
• The system uses ester oil, which is hygroscopic (absorbs moisture) – keep it sealed
• Maximum ambient temperature is 43°C – ensure adequate ventilation
• Allow the compressor to sit upright for 24 hours before starting if it’s been transported

Why the GL45AA Remains Popular

Even though newer models exist, the GL45AA continues to be widely used for good reason:

• Proven reliability – These things just keep running
• Widely available – Easy to find replacements globally
• Versatile – Works in everything from fridges to wine coolers
• Decent efficiency – COP of 1.06 at standard conditions is respectable
• Simple design – RSIR motors are straightforward and repairable

The fact that it’s made in Spain to European quality standards also gives technicians confidence in its build quality

www.skh-kaeltetechnik.de.

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SEO Elements

Focus Keyphrase: Danfoss GL45AA compressor R134a 1/8 HP LBP specifications replacement B48H technical data cooling capacity

SEO Title: Danfoss GL45AA Compressor: Complete Specs, Replacements & Performance Data | R134a 1/8HP LBP

Meta Description: Complete technical guide for Danfoss GL45AA compressor. R134a, 1/8 HP, LBP applications. Cooling capacity, COP values, B48H replacement, efficiency data. Freezer & refrigerator specs.

Slug: danfoss-gl45aa-compressor-r134a-specifications-replacement

Tags: Danfoss GL45AA, GL45AA compressor, R134a compressor, LBP compressor, 1/8 HP compressor, B48H replacement, Cubigel GL45AA, Huayi compressor, GVM38AA, refrigerator compressor, beverage cooler compressor, wine cooler compressor, freezer compressor, RSIR compressor, thermally protected compressor, Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, compressor replacement, ACC compressor, Electrolux ZEM, GL45AAa, GL45AAb, Danfoss compressor, cooling capacity, compressor specifications

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Excerpt (First 55 Words)

The Danfoss GL45AA is a reliable 1/8 HP R134a compressor designed for low back pressure applications. Used in refrigerators, beverage coolers, and freezers, this thermally protected unit delivers 96 kcal/h cooling capacity at -23.3°C with RSIR motor technology and operates between -35°C to -10°C.

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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

SEO Title: Mbsmpro, Compressor, L55AV, QD59H, 1/6 HP, Huayi, Cubigel, Cooling, R12, R134a, 160 W, LBP, 220V, RSIR

Meta Description: Expert technical guide for L55AV and QD59H compressors. Discover cooling capacity, displacement, 1/6 HP performance, and R12 to R134a conversion insights for HVAC engineers.

Slug: l55av-qd59h-compressor-specifications-comparison

Tags: L55AV, QD59H, Huayi Compressor, Cubigel, 1/6 HP Compressor, R134a, R12, Mbsmgroup, Mbsm.pro, mbsmpro.com, mbsm, HVAC Technical Data, Refrigeration Repair

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.