Disconnect power. Use a multimeter to check the continuity of the start relay and overload. Replace if open-circuit. Issue 2: Compressor is Running but Not Cooling Cause: Refrigerant leak or inefficient compressor valves.
To review full mechanical blueprints, performance curves (COP vs. evaporating temperature), and official dimensional drawings, you should reference the direct catalog files provided by authorized distributors: donper compressor
through various industrial and appliance parts distributors:
If your refrigeration system is failing to cool, use this step-by-step diagnostic breakdown for the L68WU1: Symptom 1: Compressor Clicks but Won't Start l68wu1 compressor pdf
Because R290 is an A3-classified flammable refrigerant, technicians accessing or replacing an L68WU1 compressor must enforce strict field safety procedures:
If you are replacing a faulty unit or designing a system, let me know your or the exact symptoms you are troubleshooting. I can provide the precise diagnostic steps or direct cross-reference models. Share public link
Utilizes R290, a natural refrigerant with very low Global Warming Potential (GWP) compared to HFCs like R134a. Disconnect power
: Approximately 1/3 HP (roughly 325W to 330W under standard ASHRAE evaporating conditions of -23.3°C). Electrical Profile Rated Voltage / Frequency : 220–240V at 50Hz Motor Type : RSCR (Resistance Start-Capacitor Run)
: Donper is a strategic supplier for major global brands like Whirlpool , Samsung , and Haier , and has ranked first in China for production volume for over 16 consecutive years. Purchasing Options You can find the
is a compressor, a design favored for its robust performance and durability. Specification Model Refrigerant R290 (Propane) Cooling Capacity Suitable for units with 300 to 350 liters Application Low Back Pressure ( LBP ) Voltage/Frequency 220-240V ~ 50Hz Motor Type RSCR (Resistance Start - Capacitor Run) Start Torque Low Starting Torque (LST) Control Device Capillary tube Cooling Method Fan cooling Key Features & Benefits Issue 2: Compressor is Running but Not Cooling
The L68WU1 operates using a piston-driven mechanism. A piston moves back and forth inside a cylinder, drawing in refrigerant gas on the downstroke and compressing it on the upstroke. This reciprocating action is known for its robust performance and reliability in refrigeration applications. The construction is hermetically sealed, meaning the motor and compressor are enclosed in a single welded steel shell, making it completely gastight. This design prevents refrigerant leaks and keeps the unit free from contaminants.
Comprehensive Technical Guide: Donper L68WU1 R290 Refrigeration Compressor
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