Electrical safety & Gas leak check
23
Perform the electric safety check after completing installation:
Apply a soap water or a liquid
neutral detergent on the indoor unit
connection or outdoor unit connections
by a soft brush to check for leakage
of the connecting points of the piping.
If bubbles come out, the pipes have
leakage point.
Use the leak detector to check for
leakage.
A: Low side valve, B: High side valve
valve C and D are ends of indoor unit
connection.
Electrical safety
Gas leak check
1. Insulated resistance: The insulated resistance must be more than 2M.
2. Grounding work: After finishing grounding work, measure the grounding
resistance by visual detection and grounding resistance tester. Make sure the
grounding resistance is less than 4.
3. Electrical leakage check (performing during test running): During test
operation after finishing installation, the serviceman can use the electric
probe and multimeter to perform the electrical leakage check. Turn off the unit
immediately if electrical leakage happens. Check and find out the solution
ways till the unit operates properly.
Soap water method
Leak detector
Caution
Outdoor unit
check point
Cover
indoor unit
check point
