Exorbitant exhaust pressure

1. The inflow of the condenser is too high or the flow is insufficient

2. There are air or non condensable gases in the system

3. Serious fouling in copper tube of condenser

4. Overcharge of refrigerant

5. The intake valve on the condenser is not completely opened

6. The pressure of inhalation is higher than normal

7. Failure of water pump

Elimination method

1. Check the cooling tower, water filter and each water valve

2. Discharge from the condenser

3. Cleaning copper tube

4, exclude excess amount

5. All open

6. Refer to "high suction pressure" column

7. Check the cooling water pump