Pump Down - 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
Settlement of outdoor unit
1. Fix the outdoor unit with a bolt and nut(ø10mm)
tightly and horizontally on a concrete or rigid mount.
2. When installing on the wall, roof or rooftop, anchor the
mounting base securely with a nail or wire assuming the
in uence of wind and earthquake.
3. If the vibration of the unit is transmitted to the pipe,
secure the unit with an anti-vibration rubber.
Evaluation of the performance
Operate the unit for 15~20 minutes, then check the
system refrigerant charge:
1. Measure the pressure of the gas side service valve.
2. Measure the air temperature from inlet and outlet of
air conditiioner.
3. Ensure the di erence between the inlet and outlet
temperature is more than 8°C(46.4°F).
4. For reference; the gas side pressure at optimum
condition is shown on table (cooling)
The air conditioner is now ready to use.
Outside ambient
Refrigerant
TEMP.
R-410A
35°C (95°F)
NOTICE
If the actual pressure is higher than shown, the system is most likely over-charged, and charge should be
removed. If the actual pressure are lower than shown, the system is most likely undercharged, and charge
should be added.
PUMP DOWN
This is performed when the unit is relocated or the refrigerant circuit is serviced.
Pump Down means collecting all refrigerant into the outdoor unit without the loss of refrigerant.
Be sure to perform Pump Down procedure in the cooling mode.
Pump Down Procedure
1. Connect a low-pressure gauge manifold hose to the charge port on the gas side service valve.
2. Open the gas side service valve halfway and purge the air in the manifold hose using the refrigerant.
3. Close the liquid side service valve(all the way).
4. Turn on the unit's operating switch and start the cooling operation.
5. When the low-pressure gauge reading becomes 1 to 0.5kg/cm
valve and then quickly turn o the unit. Now Pump Down procedure is completed, and all refrigerant is
collected into the outdoor unit.
The pressure of the gas side
8.5~9.5kg/cm
G(120~135 P.S.I.G.)
2
Inverter Single
Bolt
Discharge air
Discharge air
Discharge
temperature
G(14.2 to 7.1 P.S.I.G.), fully close the gas side
2
6RMI0-04C
Tubing connection
Intake temperature
Discharge
temperature
Intake temperature
81
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