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Split type wall mounted air-conditioner / Owner’s Manual 41 / 220 EN
C
Note:
This manual is usually includes the wiring mode for the different kind of A/C. We
cannot exclude the possibility that some special types of wiring diagrams are not
included.
The diagram is for reference only. If the entity is difference with this wiring diagram,
please refer to the detailed wiring diagram adhered on the unit which you purchased.
9.5 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 -0.1 MPa (-76 cm Hg).
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.
Compound meter -76cmHg
Handle Lo
Pressure gauge
Manifold valve
Handle Hi
Charge hose
Vacuum pump
Stop valve
(liquid valve)
Stop valve
(gas valve)
Charge hose
9 Install outdoor unit