A/C System Charge

CAUTION: Do not over charge refrigerant system, as excessive compressor head pressure can cause noise and system failure.


CAUTION: Review SAFETY PRECAUTIONS AND WARNINGS.

After the refrigerant system has been tested for leaks and evacuated, a refrigerant (R-12) charge can be injected into the refrigerant system.
1. Connect manifold gauge set.
2. Measure refrigerant (see capacities) and heat to 52°C (125°F) with the charging station. Refer to the instruction on the equipment being used.


REFRIGERANT CAPACITY 907 g (32 oz.)

3. Open the suction and discharge valves. Open the charge valve to allow the heated refrigerant to flow into the system. When the transfer of refrigerant has stopped, close the suction and discharge valve.
4. If all of the refrigerant charge did not transfer from the dispensing device, start the engine and hold idle at 1400 rpm. Set the A/C control to A/C, low blower speed, and open windows. If the A/C compressor does not engage, test the compressor clutch control circuit and correct any failure.
5. Open the suction valve to allow the remaining refrigerant to transfer to the system.

WARNING: TAKE CARE NOT TO OPEN THE DISCHARGE (HIGH-PRESSURE) VALVE AT THIS TIME.

6. Close all valves and test the A/C system overall performance.
7. Disconnect the charging station or manifold gauge set. Install the service port caps.