The EGM91AA is a hermetic reciprocating compressor manufactured by ZMC, designed primarily for use with R134a refrigerant. It operates on a voltage range of 220-240V at 50Hz and is typically used for low back pressure (LBP) refrigeration applications like household refrigerators and freezers.​​

Main Specifications

• Refrigerant: R134a​​

• Application: LBP (Low Back Pressure)​

• Power: 1/4 HP​

• Voltage/Frequency: 220-240V, 50Hz​​

• Motor Type: RSIR/CSIR​

• Starting Device: PTC QP2-15Ω​

• Oil Charge: 180 cm³ esters (POE)​

• CE certified​​

Technical Details

• Evaporating Temperature Range: -30°C to -10°C (suitable for refrigeration, not deep freeze)​

• Maximum Motor Temperature: 130°C​

• Locked Rotor Current: 6.78 A​

• Voltage Working Range: 187-264V​

• Compressor Cooling: Static​

• Expansion device: Capillary tube​

Typical Uses

• Household refrigerators

• Small commercial refrigerators

• Appliances using R134a needing 1/4 HP compressor power​

This model is manufactured in Egypt and is widely compatible with fridges operating in regions where 220-240V, 50Hz power is standard

For the EGM91AA (LBP, R134a), the answer leans more to freezing / low‑temperature cooling, but it is used for both refrigerators and freezers depending on the system design.​

What LBP means

• LBP = Low Back Pressure, which corresponds to low evaporating temperatures, typically about −30 °C to −10 °C.​

• Such compressors are commonly used in freezers, deep freezers, and low‑temperature refrigerator compartments.​

So for EGM91AA

• Its data sheet lists application = LBP with evaporating range −30 °C to −10 °C, exactly the range used for freezer or low‑temperature refrigerator circuits.​

• Practically: if you charge and size the capillary for −25/−30 °C, it works as freezing; if you design around −12/−10 °C, it becomes strong cooling / chiller level.

The EGM91AA compressor from ZMC stands out as one of the most notable solutions in the domestic and light commercial refrigeration sector thanks to its use of R134a refrigerant and its high efficiency under varying climatic conditions. It delivers optimal cooling performance for refrigerators operating on 220–240 V, 50 Hz power, making it a practical choice for both local and international markets. Its advanced technical features translate into quick response, reduced energy consumption, and excellent compatibility with household systems, providing reliable performance backed by solid regional manufacturing.​​

Journalistic introduction

In the fast‑moving world of refrigeration technology, real innovation often hides in the small components that only technicians and specialists tend to notice. At the core of every modern refrigerator, a compressor sets the rhythm for the entire system’s life span and efficiency, and the EGM91AA model is a clear illustration of this principle. A compact steel shell, carefully engineered handling of R134a refrigerant, and optimized power consumption come together to keep food safe and temperatures stable even when ambient heat pushes equipment to its limits.​​

This compressor is more than a metal capsule in a sealed circuit; it is a technical product with a manufacturing story that starts in Egypt and extends across regional markets serving home refrigeration. Designed for 220–240 V, 50 Hz grids and carrying CE conformity, it offers installers and repair professionals a unit that combines robustness, availability of spare parts, and predictable behavior in low back‑pressure applications. As local industries expand their capabilities, models like the EGM91AA show how regional manufacturing can compete in quality while remaining accessible to small workshops and major appliance brands alike.​​

Technical specifications table for EGM91AA

DB110C19RAW5(RSCR) : Reciprocating Compressors (Fixed Speed)

ProductReciprocating Compressors (Fixed Speed)

Series/TypeD Series (Reciprocating Fixed Speed, R134a, LBP)

DB110C19RAW5(RSCR)

Founded in December 1994, Hangzhou Qianjiang Compressor Co., Ltd., is specialized in producing hermetic compressors for refrigerators, freezers and various household appliances. Due to attaching great importance to technical innovation and development of new products, the company owns a technical team to pursue the excellent and constant self-development.

Hermetic compressor R600a
Power Supply: 220 to 240V/50Hz
Displacement (cm³ ): 8.5
Cooling Capacity (W): 147
Rated Power (W): 92
Nominal power (HP): 1/8
COP (W/W): 1.6
Motor Type: RSCR
Capacitor(μ F):4
Starting Relay: PTC
Cooling Type: S
Packing (PCS/pallet): 100
20″FCL (PCS): 2000

Characteristics:
1. Strong load capacity
2. High efficiency & reliability
3. Reliable starting performance
4. Low sound

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Reciprocating Compressors
Discover the advantages of Donper’s broad range of energy efficient and reliable reciprocating compressors for household refrigerators and freezers, air-conditioning and commercial refrigeration applications including foodservice to walk-in coolers.
What is a Reciprocating Compressor?
A hermetic reciprocating compressor uses pistons driven by a crankshaft to deliver refrigerant at high pressure from the low side to the high side of a refrigeration system.
Why Donper Reciprocating?
Donper Compressors offers a wide range of compressors covering from 2.4cc up to 34cc working with most refrigerant gases, voltages and for any type of application.

https://www.mbsm.pro/wp-content/uploads/2020/04/Mbsm_dot_pro_private_picture_qb66c13gpx5.pdf

An Khang Company est le fournisseur et le grossiste de Panasonic de petite capacité pour les réfrigérateurs, réfrigérateurs, congélateurs, etc. à l’échelle nationale. Avec la bonne qualité de modèle, le bon modèle, une capacité diversifiée adaptée à chacun.

>> Panasonic SFJ39C72RLW Refrigerator – 1 / 9HP – 220 ~ 240V – R134.

>> Panasonic SFJ48C87RLW Tornado – 1 / 7HP – 2240VAC – R134.

>> Panasonic refrigerator QBH57C10GPX – 1 / 6HP – 2240VAC – R134.

>> Panasonic refrigerators QBH66C13GPX – 1 / 5HP – 2240VAC – R134.

>> Panasonic refrigerators QBH73C16GPX – 1 / 5HP – 2240VAC – R134.

>> Panasonic refrigerator QBH86C19RPX – 1 / 4HP – 2240VAC – R134.

>> Panasonic refrigerator QB110C19GAW5–1 / 3HP – 220 ~ 240V – R134.

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Wanbao Group Compressor Co.,Ltd ( Formerly known as Guangzhou Refrigeration Company Ltd, hereinafter referred as The Co.), started its production in 1987, is the first manufacturer to infroduce foreign technology and equipment for large-scale production of refrigerator compressor in China. In 2014, The Co. acquired the overseas refrigerator compressor manufacturer-Italy ACC, and then founded Italian Wanbao-ACC Co., Ltd. This action upgrades Wanbao compressor from market internationlization towards manufacturing internationalization, and lays solid foundation to brand internationalization for the next step.

The Co. has four production bases in Guangzhou, Qingdao, Hefei, and Italy, with annual production capacity of 26 million units, thus forged a strategic global layout covering both domestic and foreign major customers. Wanbao China  mainl supplies to large domestic refrigerator manufacturers including Haier, Hisense, Midea, Meiling, etc, as well as international famous home appliance manufacturers including Electrolux Whirlpool, etc., as their global supplier. Wanbao-ACC Italy is a major supplier of European high-end brand home appliance manufacturers.

Commercial Back Compressors

(HBP R134a)

Application:Mostly used for Dehumidifier,Beer Machine and Big Water Cooler