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Leakage test
1. Take down the nut cover of turn off valve in the outdoor unit.
2. Face the central of tubing, tightering the pyramiclal nut with hand.
3. Tighten the pyramidal nut with spanner.
4. Take down the unilateralism nut of liquid ralve and gas valve.
5. Loose the core of liquid valve and check valve by hexangular
panner and screwobiver respectively, discharging some gas from the
latter.
6.After fifteen seconds of discharging, the refrigerant gas appears.
Then close the check valve and tighten the bonnet.
7. Open the core of liquid valve and gas valve entirely.
8. Tighten the bonnet, using suds or leak detector to test whather
leakage happens in the pontes of outdoor unit and pipeline.
9. If condition permits, excluding the air from check valve by vacuum
pump.
Let the condension water of outdoor unit.
Fig. 7
Fig. 8
Fig. 9
In heating mode, the condensation water and defrosting
water of outdoor unit can be discharged through drainage
pipe.
The may of installation: clip the tie-in of discharge pipe
into the 25 hole of chassis, then connect the drainage
pipe with the outfall to enable the condensation water and
defrosting water to dischange properly.
screndriver
gas pipe
check valve
gas valve
lighid valve
Vacuum gauge
bonnet
Vacuum pump
Chassis of outdoor unit.
Drainage fie-in of outside
(unilateralism valve)
liquid pipe
(only heat pump type)
