CHARGING THE REFRIGERANT R-22 SYSTEM - continued

TM9 4120-423-14&P

Close the low pressure (suction) charging manifold valve. Never introduce liquid Refrigerant R-

22 into the low-pressure (suction) service valve.

Position the Refrigerant-22 drum so that liquid will be used for charging. (Some drums must be

inverted and some are equipped with a selector valve.)

Using accurate scales measure and record the weight of the Refrigerant-22 drum.

Open the Refrigerant-22 drum valve.

Open the high-pressure service valve on the air conditioner. Allow liquid Refrigerant R-22 to

enter the system until the drum weight has decreased by 8.5 pounds (3.86 Kg) or until system

pressure has equalized.

Close the Refrigerant R-22 drum valve and the high-pressure (discharge) manifold valve.

Connect air conditioner to a remote control module assembly.

Connect power.

Turn air conditioner on and operate in the COOL mode with the TEMPERATURE CONTROL

set at the maximum COOLER position.

If the 6-pound (2.93 kg) full charge was obtained, skip steps 16 through 19. If the system

pressure equalized prior to obtaining a full charge of 8.5 pounds (3.86 kg) proceed with step 16.

Switch the Refrigerant R-22 drum to the gas only position.

Be sure that the Refrigerant R-22 drum has been switched to the gas position and open the

Refrigerant R-22 drum valve, the low (suction) pressure charging manifold valve and the low

(suction) pressure service valve on the air conditioner.

Monitor the weight of the Refrigerant R-22 drum as the air conditioner compressor pulls

additional Refrigerant R-22 gas into the system until the full 8.5-pound (3.86 kg.) charge is

obtained. When the system is fully charged, immediately close the Refrigerant R-22 drum valve

and the air conditioner low-pressure service valve.

Run the air conditioner in COOL mode (with TEMPERATURE CONTROL in full COOLER

position) for 15 minutes.

CAUTION

Do not skip the next step.

0075 00-3