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2). Purge the air from the charge hose.
Open the valve at the bottom of the cylinder and press the check valve on the charge set
to purge the air (be careful of the liquid refrigerant).
3) Put the charging cylinder onto the electronic scale and record the weight.
4) Operate the air conditioner at the cooling mode.
5) Open the valves (Low side) on the charge set and charge the system with liquid
refrigerant.
6).When the electronic scale displays the proper weight (refer to the gauge and the
pressure of the low side), disconnect the charge hose from the 3-way valve’s service
port immediately and turn off the air conditioner before disconnecting the hose.
7). Mount the valve stem caps and the service port
Use torque wrench to tighten the service port cap to a torque of 18N.m.
Be sure to check for gas leakage.
5.3.5 Re-installation while the indoor unit need to be repaired
1. Collecting the refrigerant into the outdoor unit
Procedure
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