68
V 02/21
WIRING DIAGRAM
If there is a connector, connect it directly
NOTE:
The diagram are for reference only. Please refer to the detailed wiring diagram adhered on the unit which you
purchased.
VACUUMING
★
Exclusive R32 refrigerant pump must be used in making R32 refrigerant vacuum.
Before working on the air conditioner, remove the cover of the stop valve
(gas and liquid valves) and be sure to retighten it afterward (to prevent the
potential air leakage)
1.
To prevent air leakage and spilling tighten all connecting nut of all flare
tubes.
2.
Connect the stop valve, charge hose, manifold valve, and vacuum
pump.
3.
Fully open the handle Lo of the manifold valve and apply vacuum for at
least 15 minutes and check that the compound vacuum gauge reads -
0.1MPa(-76cmHg).
4.
After applying vacuum, fully open the stop valve with a hex wrench.
5.
Check that both indoor and outdoor connections are free of air leakage.
