Check After Installation And Test Operation - Gree GWC12NC-K3NNA3E Service Manual

7.4.2 Air Purging and Leakage Test
1. Connect charging hose of manifold valve to charge end of low pressure
valve (bothhigh/low pressure valves must be tightly shut).
2. Connect joint of charging hose to vacuum pump.
3. Fully open the handle of Lo manifold valve.
4. Open the vacuum pump for vacuumization. At the beginning, slightly
loosen joint nut of low pressure valve to check if there is air coming inside (If
noise of vacuum pump has been changed, the reading of multimeter is 0).
Then tighten the nut.
5. Keep vacuuming for more than 15mins and make sure the reading of
multi-meteris -1.0X10
6.Fully open high/low pressure valves.
7. Remove charging hose from charging end of low pressure valve.
8. Tighten lid of low pressure valve. (As shown in Fig.6)
7.4.3 Outdoor Condensate Drainage (only for heat pump unit)
During heating operation, the condensate and defrosting water should be
drained out reliably through the drain hose.Install the outdoor drain connector
in a Φ25 hole on the base plate and attach the drain hose to the connector so
that the waste water formed in the outdoor unit can bedrained out .The hole
diameter 25 must be plugged.Whether to plug other holes will be determined
by the dealers according to actual conditions.

7.5 Check after Installation and Test Operation

7.5.1 Check after Installation
24
5
pa(-76cmHg).
Items to be checked
Has it been fixed firmly?
Have you done the refrigerant leakage test?
Is heat insulation sufficient?
Is water drainage satisfactory?
Is the voltage in accordance with the rated
voltage marked on the nameplate?
Is the electric wiring and piping
connection installed correctly and securely?
Has the unit been connected to a secure
earth connection?
Is the power cord specified?
Are the inlet and outlet openings blocked?
Is the length of connection pipes
and refrigerant capacity been recorded?
Gas pipe
Bottom frame
Hose (available commercially,
inner dia. 16mm)
Possible malfunction
The unit may drop, shake or emit noise.
It may cause insufficient cooling(heating)
capacity
It may cause condensation and dripping.
It may cause condensation and dripping.
It may cause electric malfunction
or damage the product.
It may cause electric malfunction
or damage the part.
It may cause electrical leakage.
It may cause electric malfunction
or damage the part.
It may cause insufficient cooling(heating)
capacity.
The refrigerant capacity is not accurate.
Installation Manual
Liquid pipe
Vacuum
gauge
Valve
cap
Vacuum pump
Fig.6
Drain-water hole
Drain connecter