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Do the following checks before test run.
Inspections Before Test Run
Description
Inspection Method
Electrical Safety
Inspection
•
Check and confirm the power supply voltage complies with the rating of
the unit.
•
Check the connection of the electrical wires.
Installation Safety
Inspection
•
Check for proper installation of drainage pipe to prevent water leakage
and damage.
•
Confirm that the joint of refrigerant pipe is fully connected. Confirm the
outdoor unit, mounting plate and indoor unit are installed according to
all safety guidelines.
•
Check that the valves are fully open.
Refrigerant Leakage
Detection
•
Check for leakage at the pipe connection points of the indoor unit and at
the two valves of the outdoor unit.
•
Foam detection method: Apply soapy water or foam evenly on the parts
where leakage may occur and observe whether bubbles appear or not.
No bubbles indicate no leakage detected.
•
Leak detector method: Use a professional leak detector and follow the
directions to detect for leakage.
•
The duration of leak detection for each spot should last for 3 minutes or
more.
•
If the test results indicate that there is leakage, the nut should be tight
-
ened and tested again until there is no leakage.
•
After the leak detection is completed, wrap the exposed pipe connector
of indoor unit with thermal insulation material and wrap with insulation
tape.
TEST OPERATION
