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Donper ETK130L Compressor 1/4 HP R600a LBP Specifications and Professional Technical Guide for Refrigeration Engineers
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Technical deep-dive into the Donper ETK130L compressor. Includes 1/4 HP R600a performance charts, cooling capacity, electrical schematics, and expert cross-reference guides.
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The Donper ETK130L compressor is a high-efficiency 1/4 HP unit designed for low back pressure applications using R600a refrigerant. This article provides a comprehensive technical breakdown, including cooling capacity, electrical schematics, and cross-reference replacements. Ideal for technicians and engineers seeking precise data for maintenance and system optimization in domestic and light commercial refrigeration.
Donper ETK130L: The Engineering Standard for Modern R600a Refrigeration
In the evolving landscape of domestic cooling, the Donper ETK130L stands as a testament to efficient, low-impact refrigeration. As a seasoned technician who has spent years in the field, I can tell you that transitioning to R600a (Isobutane) systems required a shift in mindset. The ETK130L is a high-performance 1/4 HP hermetic reciprocating compressor that has become a staple in large-capacity domestic freezers and side-by-side refrigerators.
This unit isn’t just about moving gas; it’s about thermodynamic precision. Engineered by the Huangshi Dongbei Electrical Corp, it targets Low Back Pressure (LBP) environments, ensuring that even when the mercury rises outside, the internal temperatures stay locked in the deep-freeze zone.
Comprehensive Technical Data
| Feature | Specification |
| Model | ETK130L |
| Utilisation (mbp/hbp/lbp) | LBP (Low Back Pressure) |
| Domaine (Freezing/Cooling) | Freezing / Deep Cold Storage |
| Cooling wattage at -23.3°C | 220 Watts |
| Cubic feet can this compressor cool? | 16 to 20 Cubic Feet |
| Litres can this compressor cool? | 450 to 550 Liters |
| Kcal/h | 189 Kcal/h |
| Oil Type and quantity | Mineral / POE – 180ml |
| Horsepower (HP) | 1/4 HP |
| Refrigerant Type | R600a (Isobutane) |
| Power Supply | 220-240V / 50Hz / 1Ph |
| Cooling Capacity BTU | 750 BTU/h |
| Motor Type | RSCR (Resistive Start – Capacitive Run) |
| Displacement | 13.0 cm³ |
| Winding Material | High-Grade Copper |
| Pression Charge | Low Pressure (Suction) |
| Capillary | 0.031″ / 0.8mm (Approx. 3 meters) |
| Model Fridge Compatibility | Large Chest Freezers, Samsung/LG Style Fridges |
| Temperature function | -35°C to -10°C |
| With fan or no | Generally Static (Forced air optional) |
| Commercial or no | Domestic / Light Commercial |
| Amperage in function | 1.1 A |
| LRA (Locked Rotor Amps) | 8.2 A |
| Type of relay | PTC (Positive Temperature Coefficient) |
| Capacitor or no and valeur | Run Capacitor: 4µF or 5µF |
| Country of origin | China |
Efficiency Metrics & Thermodynamic Performance (COP)
Understanding the Coefficient of Performance (COP) is critical for any engineer looking to optimize energy star ratings. Below is the performance curve for the ETK130L at various evaporating stages.
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| Evaporating Temp (°C) | Cooling Capacity (Watts) | Power Consumption (Watts) | COP (W/W) |
| -35 | 128 | 118 | 1.08 |
| -30 | 165 | 135 | 1.22 |
| -23.3 (Standard) | 220 | 155 | 1.42 |
| -20 | 258 | 168 | 1.54 |
| -15 | 315 | 185 | 1.70 |
| -10 | 385 | 205 | 1.88 |
| 0 | 540 (N/A for LBP) | — | — |
| 4 | — | — | — |
| 10 | — | — | — |
Electrical Schematic: RSCR Configuration
The ETK130L typically utilizes an RSCR (Resistive Start – Capacitive Run) setup to maximize energy savings. Here is the logical wiring layout:
- Common (C): Connects to the Overload Protector (OLP).
- Main/Run (R): Connects directly to the Neutral line.
- Start (S): Connects through the PTC Relay.
- Run Capacitor: Wired across the Start and Run terminals of the PTC relay to maintain current phase alignment during operation, significantly lowering the running amperage.
Field Note: If you find the compressor “clicking” without starting, check the 4µF capacitor. A failed capacitor in an RSCR system often prevents the motor from overcoming its initial torque requirements.
Comparative Analysis: R600a vs. R134a Equivalents
When comparing the ETK130L (R600a) to an older R134a unit like the GP12, several differences emerge:
- Operating Pressure: The ETK130L operates under a vacuum on the suction side or at very low positive pressure. R134a units run at much higher pressures.
- Lubrication: R600a is highly miscible with mineral oil, whereas R134a strictly requires synthetic POE/PAG oils.
- Energy Consumption: The ETK130L generally consumes 10-15% less electricity than its R134a counterpart for the same cooling output.
Cross-Reference Replacement Guide
5 Replacements (Same Gas: R600a)
- Secop (Danfoss): NLE13KK.4
- Embraco: EMX70CLC
- Jiaxipera: NT1114Y
- Huayi: HYB130MHU
- LG: CMA121LHEG
5 Replacements (Alternative Gas: R134a)
Note: Using these requires a complete system flush and oil change.
- Embraco: FFI10HAK (1/3 HP to match R600a displacement)
- Secop: TLES10KK.3
- ZMC: GL90AA
- Donper: GP12TG
- Tecumseh: THB1390YS
Engineering Advice & Maintenance Notice
- Safety: R600a is flammable. Never use a standard piercing valve for long-term service. Brazing should only be performed after ensuring the system is completely purged with Nitrogen.
- Vacuum Depth: Aim for 200 microns. Moisture is the enemy of the long-term reliability of the internal valves.
- Charging: Always charge by weight using a digital scale. R600a systems are extremely sensitive; even an overcharge of 5 grams can cause liquid slugging.
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