LG LS-L1260CL Service Manual ▷ View online
-30-
Gas side
Liquid side
Cap
Hexagonal
wrench
wrench
2-way valve
(Open)
3-way valve
(Close)
No leakage found
Leakage found
• Re-tighten the connecting portion with torque
wrenches.
wrenches.
Leakage ceased
Leakage persists
Leakage ceased
Repair
Result
5. To open 2-way valve again, turn the
valve stem counter-clockwise until it
stops.
stops.
Terminal block
(pillar terminal)
6. To purge the air, push the pin on the service port of 3-
way valve for three seconds with a hexagonal wrench
and set it free for one minute.
and set it free for one minute.
7. Set both liquid and gas side valves to open
position with the Hexagonal wrench for the
unit operation.
unit operation.
5. Air Purging of the Piping and Indoor Unit
1) Air purging
The air remaining which contains moisture in the
refrigeration cycle may cause a malfunction on the
compressor.
refrigeration cycle may cause a malfunction on the
compressor.
1. Remove the caps from the 2-way and 3-way
valves.
2. Remove the service-port cap from the 3-way
valve.
3. To open the valve, turn the valve stem of 2-way
valve counter-clockwise approx. 90
¡˘
and hold it
there for five seconds, then close it.
4. Check a gas-leakage of the connecting portion of
the pipings.
CAUTION: Do not leak the gas in the air during
air purging, with vacuum pump as
possible as you can.
possible as you can.
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8. Checking a gas leakage
(1) Connect the manifold gauge to the service port of 3-way valve.
Measure the pressure.
(2) Keep it for 5-10 minutes.
Ensure if the pressure indicated on the gauge is as same as that of measured at first time.
Liquid side
Gas side
CLOSE
CLOSE
Indoor unit
Outdoor unit
Closed
Closed
NOTE:
The additional gas for air purping has been charged in the outdoor unit.
However, if the flare connections have not been done correctly and there gas leaks, a gas cylinder and the charge
set will be needed.
set will be needed.
CAUTION : Do not leak the gas in the air during air purging. Use vaccum pump as far as possible
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A
A
B
Oil trap
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
B
6. Pipe length and the elevation
• Capicity is based on standard length and maximum allowance length is the basis of reliability.
• Oil trap should be installed per 5~7 meters.
• Numerical value in "( )" is for Rotary Comp. model.
CAUTION
In case more than 5m
Max. Piping
Length
£
(m)
Capacity
(Btu/h)
7~12K
15
7
5
20
Max.
Elevation
£
(m)
Standard
Length(m)
Additional Refrig-
erant
(g/m)
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7. Test running
Discharge air
Bolt
Tubing
connection
Battery Cover
Settlement of Outdoor Unit
• Anchor the outdoor unit with a bolt and nut
(ø10cm) tightly and horizontally on a concrete or
rigid mount.
rigid mount.
• When installing on the wall, roof or rooftop, anchor
the mounting base securely with a nail or wire
assuming the influence of wind and earthquake.
assuming the influence of wind and earthquake.
• In the case when the vibration of the unit is con-
veyed to the house, settle the unit with an anti-
vibration rubber.
vibration rubber.
2) Evaluation of the performance
1. Measure the temperature of the intake and dis-
charge air.
2. Ensure the difference between the intake tem-
perature and the discharge one is more than 8
°C(Cooling) or reversely (Heating).
°C(Cooling) or reversely (Heating).
1) Connection of power supply
1. Connect the power supply cord to the inde-
pendent power supply.
• Circuitbreaker is required.
• Circuitbreaker is required.
2. Prepare the remote controller.
• Insert two batteries provided.
Remove the battery cover from the remote con-
troller.
troller.
• Slide the cover according to the arrow direction.
Insert two batteries.
(Two "R03" or "AAA" dry-cell batteries or equiv-
alent.)
(Two "R03" or "AAA" dry-cell batteries or equiv-
alent.)
• Be sure that the (+) and (-) directions are cor-
rect.
• Be sure that both batteries are new.
Re-attach the cover.
• Slide it back into position.
3. Operate the unit for fifteen minuites or more.
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