Alarm of container refrigeration system of Mitsui merchant ship

2, refrigeration compressor exhaust temperature is too high.

3. The exhaust pressure of the refrigeration compressor is too low (normal).

4. Insufficient or blocked refrigerant in the evaporator (expansion valve failure, capillary blockage, etc.). ).

5. The condenser has poor heat dissipation and high ambient temperature, which leads to the decrease of cooling water flow.

6. The refrigerant level of the compressor is too low or the air return port is blocked (the suction cut-off valve is not closed correctly).

7. Throttle device failure (solenoid valve opening is too small or damaged, check valve is not opened, bypass valve is too small).

8. Poor heat dissipation of condenser and high ambient temperature lead to the decrease of cooling water flow.