Refrigerant overcharged or insufficient cooling of condenser

Symptom seen in refrigeration system

Probable cause



♦Pressure too high on both low and high pressure sides ♦No air bubbles seen through the sight glass even when the engine rpm is lowered

♦Unable to develop sufficient performance due to excessive refrigeration system

♦Insufficient cooling of condenser

♦Excessive refrigerant in cycle ^ refrigerant over charged ♦Condenser cooling ^ condenser fins clogged or cooling fan faulty

(1) Clean condenser

(2) Check cooling fan with fluid coupling operation

(3) If (1) and (2) are in normal state, check amount of refrigerant, and charge proper amount of refrigerant

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