Gas Charging - Panasonic CS-C18DKU Service Manual

11.6. Gas charging

(After Evacuation)
Procedure:
1. Connect the charge hose to the charging cylinder.
• Connect the charge hose which you disconnected from
the vacuum pump to the valve at the bottom of the
cylinder.
2. Purge the air from the charge hose.
• Open the valve at the bottom of the cylinder and use a
screwdriver to press the check valve on the charge set
to purge the air (be careful of the liquid refrigerant).
3. Open the High side on the charge set and charge the
refrigerant to the unit.
• Be sure to open only the High side valve on the charge
set to charge the system from the liquid-side (high
pressure) pipe. (If the system cannot be charged with
the specified amount of refrigerant, operate the
compressor until the specified amount can be charged,
and then close the valve at the bottom of the charge
cylinder.)
4. Immediately disconnect the charge hose from both the
3-way valve service ports.
5. Mount the valve stem nuts and the service port caps
onto the 3-way valves.
• Use torque wrench to tighten the service port caps to a
torque of 4.05 lbf.
• Be sure to check for gas leakage.
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CS-C18DKU CU-C18DKU / CS-C24DKU CU-C24DKU