INVENTOR V1KI-09, Руководство пользователя, Страница: 54 / 60

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12.5.3 Air Purging
The purpose of the air purging is to get rid of moisture and air in the system, otherwise moisture
and air may cause ineffectiveness of the compressor which directly affects the cooling capacity.
Purging by Using Vacuum
After tightening the flared nuts between the indoor and the outdoor
units
1. Remove the blank cap of a three-way valve by using
a torque wrench, and then check if both high pressure
and low pressure valves are in closed condition or not.
2. Remove the nut at the service port.
3. Connect a gauge into the service port and a vacuum pump.
Remove the gauge and tighten up the nut at the service port.
4. Use a hexagonal wrench to open both high pressure and low pressure valves to the end (counter
clockwise).
5. Tighten the blank cap of the three-way valve.
Gap Leakage Check
1. Check if it leaks or not by applying soapsuds on every
joint and then inspect carefully. After the check, wipe
them off completely.
2. Cover the indoor unit joint with pipe insulation and
four plastic bands to prevent condensing at joints.
Fig.61
Fig.62