Finishing The Job - LG LSN090HYV Product Data Book
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Also See for LSN090HYV:
- Svc manual (9 pages) ,
- Overview (20 pages) ,
- Specification (2 pages)
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Installation
Soap water method
1. Remove the caps from the 2-way and 3-way valves.
2. Remove the service-port cap from the 3-way valve.
3. Apply a soap water or a liquid neutral detergent on
the indoor unit connection or outdoor unit
connections by a soft brush to check for leakage of
the connecting points of the piping.
4. If bubbles come out, the pipes have leakage
Evacuation
1. Connect the charge hose end described in the
preceding steps to the vacuum pump to evacuate the
tubing and indoor unit.
Con rm the "Lo" knob of the pressure Gauge is open.
Then, run the vacuum pump.
The operation time for evacuation varies with tubing
length and capacity of the pump. The following table
shows the time required for evacuation.
Required time for evacuation when 30 gal/h vacuum
pump is used
If tubing length is less
than 10m (33 ft)
10 min. or more
2. When the desired vacuum is reached, close the knob of
the 3-way valve and stop the vacuum pump.
Finishing the Job
1. With a service valve wrench, turn the valve of liquid
side counter-clockwise to fully open the valve
2. Turn the valve of gas side counter clockwise to fully
open the valve
3. Loosen the charge hose connected to the gas side
service port slightly to release the pressure, then
remove the hose.
4. Replace the are nut and its bonnet on the gas side
service port and fasten the are nut securely with an
adjustable wrench. This process is very important to
prevent leakage from the system
5. Replace the valve caps at both gas and liquid side
service valves and fasten them tight.
This completes air purging with a vacuum pump.
6. Replace the pipe cover to the outdoor unit by one
screw
Now the air conditioner is ready for test run.
If tubing length is longer
than 10m (33 ft)
15 min. or more
Inverter Single
Liquid side
2-way valve
(Close)
3-way valve
(Close)
Indoor unit
Outdoor unit
Manifold valve
Pressure
Lo
Hi
gauge
Open
Close
Vacuum pump
6RMI0-04C
Gas side
Cap
79
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