Overall Checking
Ensure that:
1) The unit has been mounted solidly and rigid in position.
2) The piping and connections are leak-proof.
3) Proper wiring has been installed.
Drainage Check
Pour some water into the left side of the drain pan (the drainage is at the right side of the unit).
Test run:
1) Conduct a test run on the unit after having performed the water drainage test and the gas leakage test.
2) Check the following items:
a) Is the electrical plug inserted firmly into the socket?
b) Is there any abnormal sound from the unit?
c) Is there any abnormal vibration on the unit or the piping?
d) Is the drainage of water smooth?
Confirm that:
1) The compressor is running.
2) The evaporator blower is running and discharge cool air.
3) The suction (low side) pressure is as recommended.
4) The remote controller incorporates a 3-minute delay protection in the circuit, whereby the outdoor
condensing unit requires about 3 minutes delay before it can start operating.
Pre Start Up Maintenance
After long Shutdown
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Inspect thoroughly and clean the units.
Clean or replace air filter.
Clean condense drain line.
Clean clogged coil.
Check fan imbalance before operation and panels.
Tighten all wiring connections and panels.
Check for refrigerant leakage.
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