Gree U-Crown GWH18UC-K6DNA4A/O Руководство пользователя - Страница 15
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Test and operation
Use vacuum pump
1.
Remove the valve caps on the liquid valve and
gas valve and the nut of refrigerant charging vent.
2. Connect the charging hose of piezometer to the
refrigerant charging vent of gas valve and then
connect the other charging hose to the vacuum
pump.
3. Open the piezometer completely and operate
for 10-15min to check if the pressure of piezo-
meter remains in -0.1MPa.
4. Close the vacuum pump and maintain this sta-
tus for 1-2min to check if the pressure of piezo-
meter remains in -0.1MPa. If the pressure de-
creases, there may be leakage.
5. Remove the piezometer, open the valve core
of liquid valve and gas valve completely with
inner hexagon spanner.
6. Tighten the screw caps of valves and refriger-
ant charging vent.
7.
Reinstall the handle.
liquid valve
gas valve
refrigerant charging
vent
nut of refrigerant
charging vent
Leakage detection
1.
With leakage detector:
Check if there is leakage with leakage detector.
2.
With soap water:
If leakage detector is not available, please use
soap water for leakage detection. Apply soap
water at the suspected position and keep the
soap water for more than 3min. If there are air
bubbles coming out of this position, there's a
leakage.
piezometer
Lo
Hi
valve cap
vacuum pump
inner hexagon
spanner
close
open
Check after installation
●
Check according to the following requirement
after finishing installation.
Items to be checked
Has the unit been
installed firmly?
Have you done the refri-
gerant leakage test?
Is heat insulation of pipe-
line sufficient?
Is water drained well?
Is the voltage of power
supply according to the
voltage marked on the
nameplate?
Is electric wiring and pip-
eline installed correctly?
Is the unit grounded
securely?
Does the power cord fol-
low the specification?
Is there any obstruction in
the air inlet and outlet?
The dust and sundries
caused during installation
are removed?
The gas valve and liquid
valve of connection pipe
are open completely?
Is the inlet and outlet of
piping hole been covered?
Test operation
1.
Preparation of test operation
●
The client approves the air conditioner.
●
Specify the important notes for air conditioner to
the client.
2.
Method of test operation
●
P
t u
h t
o r
u
g
h
h t
the remote controller to start operation.
●
Press MODE button to select AUTO, COOL, DRY ,
F
A
N
a
n
d
H
E
A
normal or not.
●
If the ambient temperature is lower than 16℃， e
air conditioner can't start cooling.
10
Possible malfunction
The unit may drop, shake or
emit noise.
It may cause insufficient
cooling(heating) capacity.
It may cause condensation
and water dripping.
It may cause condensation
and water dripping.
It may cause malfunction or
damaging the parts.
It may cause malfunction or
damaging the parts.
It may cause electric leakage.
It may cause malfunction or
damaging the parts.
It may cause insufficient
cooling(heating) capacity.
It may cause malfunction or
damaging the parts.
It may cause insufficient
cooling (heating) capacity.
It may cause insufficient
cooling (heating) capacity
or waster eletricity.
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