compressors: L58CZ1 (1/6HP), L65CZ1 (1/5HP), L72CZ1 (1/4HP), K270CZ1 (1/3HP), and K375CZ1 (1/2HP
Compresseur Réfrigérateur DONPER
Référence: K270CZ1R134A 1/3HP
DONPER Refrigerator Compressor
Référence: L58CZ1R134A 1/6HP
DONPERCompresseur Réfrigérateur
Référence: L65CZ1R134A 1/5HP
DONPER Refrigerator Compressor
Référence: L72CZ1R134A 1/4HP
DONPER Refrigerator Compressor
DONPER Refrigerator Compressor
K375CZ1R134A 1/2HP
Mbsmpro.com, Compressor, Donper, R134a, 1/6 hp to 1/2 hp, K and L Series, Cooling, Technical Data
In the HVAC and refrigeration industry, the Donper brand has become a synonymous name for reliability and cost-effective performance. Specializing in hermetic reciprocating technology, Donper’s R134a lineup—specifically the L-series and K-series—covers the vast majority of domestic and light commercial needs. From a small 1/6 HP refrigerator to a robust 1/2 HP commercial chest freezer, these compressors are engineered to handle varying thermal loads with consistent efficiency.
As a field technician or engineer, selecting the correct replacement or designing a system requires more than just knowing the horsepower. It requires a deep dive into displacement, motor torque, and winding characteristics. Below, we provide the definitive technical breakdown of the most common Donper R134a models.
Comparative Analysis: The Donper R134a Series
The transition from the L-series to the K-series marks a shift from residential “static” cooling to more demanding commercial “forced-air” or high-capacity “static” cooling. While the L58CZ1 is the quiet heart of a kitchen fridge, the K375CZ1 is the workhorse of the supermarket display.
| Model | HP | Displacement (cc) | Cooling Cap (W) | Efficiency (W/W) | Motor Type |
| L58CZ1 | 1/6 | 5.8 | 140 | 1.15 | RSIR |
| L65CZ1 | 1/5 | 6.5 | 165 | 1.20 | RSIR |
| L72CZ1 | 1/4 | 7.2 | 195 | 1.25 | RSIR/RSCR |
| K270CZ1 | 1/3 | 9.5 | 270 | 1.30 | RSCR |
| K375CZ1 | 1/2 | 12.5 | 375 | 1.35 | CSIR |
Detailed Technical Data Sheets
Below are the exhaustive specifications for each model mentioned. This data is critical for calculating capillary tube lengths and ensuring electrical compatibility.
1. Donper L-Series (Domestic Focus)
| Feature | L58CZ1 (1/6 HP) | L65CZ1 (1/5 HP) | L72CZ1 (1/4 HP) |
| Utilisation | LBP | LBP | LBP |
| Domaine | Cooling / Freezing | Cooling / Freezing | Cooling / Freezing |
| Oil Type / Qty | POE – 180ml | POE – 200ml | POE – 210ml |
| Power Supply | 220-240V 50Hz | 220-240V 50Hz | 220-240V 50Hz |
| Cooling Capacity | 478 BTU/h | 563 BTU/h | 665 BTU/h |
| Motor Type | RSIR | RSIR | RSIR/RSCR |
| Winding Material | Copper | Copper | Copper |
| Pressure Charge | 100-120 PSI (Static) | 100-120 PSI (Static) | 110-130 PSI (Static) |
| Capillary (Typical) | 0.028″ x 3m | 0.031″ x 3m | 0.036″ x 3m |
| Fan Required | No (Static) | No (Static) | Optional |
| LRA (Amps) | 6.5 A | 8.0 A | 9.5 A |
| Capacitor | N/A | N/A | 4-5 µF (if RSCR) |
2. Donper K-Series (Commercial Focus)
| Feature | K270CZ1 (1/3 HP) | K375CZ1 (1/2 HP) |
| Utilisation | LBP / MBP | LBP / MBP |
| Domaine | Large Freezing | Commercial Freezing |
| Oil Type / Qty | POE – 250ml | POE – 300ml |
| Power Supply | 220-240V 50Hz | 220-240V 50Hz |
| Cooling Capacity | 921 BTU/h | 1280 BTU/h |
| Motor Type | RSCR | CSIR (Start Cap) |
| Winding Material | Copper | High-Temp Copper |
| Pressure Charge | 120-140 PSI (Static) | 140-160 PSI (Static) |
| Capillary (Typical) | 0.042″ x 2.5m | 0.050″ x 2.5m |
| Fan Required | Recommended | Yes (Forced Air) |
| LRA (Amps) | 12.0 A | 18.0 A |
| Capacitor | 6 µF (Run) | 60-80 µF (Start) |
Cross-Reference & Replacement Guide
When the exact Donper model is unavailable, the following industry-standard alternatives can be utilized. Ensure you verify the mounting foot dimensions as they may vary slightly between brands.
5 Standard Replacements (R134a)
- Embraco: FFI10HAK (for 1/3 HP) / FFI12HBX (for 1/2 HP)
- Secop/Danfoss: TLES8.7KK.3 / NL11F
- Tecumseh: THB1390Y / AEA3440Y
- Huayi: HYE90MT / HYE121MT
- Jiaxipera: ND1114Y / NT1116Y
5 Alternative Gas Replacements (System Flush Required)
- Donper (R600a): D65CY1 (for 1/5 HP applications)
- Secop (R290): NLE11KK (High Efficiency)
- Embraco (R600a): EMX3115Y
- Cubigel (R290): GLY12RA
- LG (R600a): BSA075LHE
Engineering Best Practices & Maintenance
Expert Advice: The K375CZ1 (1/2 HP) generates significant heat during the compression cycle. If installing this in a confined space, a condenser fan is non-negotiable. Lack of airflow will lead to oil carbonization and premature valve failure.
- Vacuuming: Always pull a vacuum down to 500 microns. R134a uses POE oil, which is highly hygroscopic (absorbs moisture). Moisture in the system leads to acid formation that eats through copper windings.
- Capillary Match: When moving from a 1/6 HP to a 1/4 HP compressor, you must resize the capillary tube. Using an undersized capillary will cause high head pressure and trip the thermal overload protector.
- Relay Testing: If the compressor fails to start but hums, check the PTC relay or the Start Capacitor (on 1/2 HP models). Donper relays are standardized, but always match the Ohm resistance of the original part.
Focus Keyphrase: Donper R134a Refrigerator Compressor Technical Specs L58CZ1 L65CZ1 L72CZ1 K270CZ1 K375CZ1
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Meta Description: Full technical data sheets for Donper R134a compressors: L58CZ1 (1/6HP), L65CZ1 (1/5HP), L72CZ1 (1/4HP), K270CZ1 (1/3HP), and K375CZ1 (1/2HP). Includes cross-reference and wiring tips.
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Excerpt: Donper has established itself as a powerhouse in the hermetic compressor industry, providing reliable cooling solutions for domestic and light commercial applications. This technical analysis explores the R134a L and K series, ranging from 1/6 HP to 1/2 HP, offering engineers and technicians the critical data needed for successful repairs and system optimizations.
Donper Series – R134a Refrigerant (LBP, 220V/50Hz)
These models feature aluminum windings (Al-wire) and are designed for Low Back Pressure (LBP) applications.
| Model | Power (HP) | Cooling Capacity (W) | Power Supply | Wire Type |
| S53CW1 | 1/8 HP | 135W | 220V/50Hz | Aluminum |
| L58CZ1 | 1/6 HP | 145W | 220V/50Hz | Aluminum |
| L65CZ1 | 1/5 HP | 170W | 220V/50Hz | Aluminum |
| L72CZ1 | 1/4 HP | 195W | 220V/50Hz | Aluminum |
| L76CZ1 | 1/4 HP+ | 215W | 220V/50Hz | Aluminum |
| K230CZ1 | 1/4 HP+ | 230W | 220V/50Hz | Aluminum |
| K270CZ1 | 1/3 HP | 270W | 220V/50Hz | Aluminum |
| K325CZ1 | 1/3 HP | 325W | 220V/50Hz | Aluminum |
Donper Series – R600a Refrigerant (LBP, 220V/50Hz)
Models optimized for Isobutane (R600a), also using aluminum motor windings.
| Model | Power (HP) | Cooling Capacity (W) | Power Supply | Wire Type |
| A120CY1T | 1/8 HP | 118W | 220V/50Hz | Aluminum |
| A145CY1A | 1/6 HP | 138W | 220V/50Hz | Aluminum |
| S100CY1 | 1/5 HP | 168W | 220V/50Hz | Aluminum |
| S118CY1 | 1/4 HP | 200W | 220V/50Hz | Aluminum |
| L140CY1 | 1/4 HP+ | 235W | 220V/50Hz | Aluminum |
Technical Definitions
- LBP (Low Back Pressure): Optimized for low evaporating temperatures (typically -35°C to -10°C), making them ideal for household freezers and refrigerators.
- Cooling Capacity (W): Measured in Watts, representing the amount of heat the compressor can remove per hour under standard test conditions (ASHRAE).
- Al-wire (Aluminum Wire): A cost-effective alternative to copper. While lighter, it requires specific handling during repair and is generally found in “entry-level” or standard domestic units.