DOWNLOAD LG LP-F8081ZL Service Manual ↓ Size: 1.68 MB | Pages: 62 in PDF or view online for FREE

Model
LP-F8081ZL
Pages
62
Size
1.68 MB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
lp-f8081zl.zip
Date
PREV: LG LP-E5082ZA Service Manual

LG LP-F8081ZL Service Manual ▷ View online

–23–
5-7. Air Purging of the Piping and Indoor Unit
No leakage found
 leakage found
 leakage ceased
 leakage ceased
 leakage persists
Outdoor unit
To indoor unit
Hexagonal wrench
Service port cap
3-way valve cap
(liquid side)
3-way valve cap
(gas side)
The air which contains moisture and which remains in
the Refrigeration cycle may cause a malfunction on the
compressor.
¤
Remove the caps from the 4-way(liquid side)
and 4-way(gas side) valves.
¤Ł
Remove the service-port cap from the 3-way 
(gas side) valve.
¤Ø
To open the valve, turn the valve stem of 3-way
(liquid side) valve counter-clockwise approx. 90°
and hold it there for ten seconds, then close it.
¤Œ
Check a gas-leakage of the connecting portion
of the pipings.
¤º
To open 3-way(liquid side) valve
again, turn the valve stem counter-
clockwise until it stops.
¤
To purge the air, push the pin on the service port
of 3-way(gas side) valve for three seconds using
with a hexagonal wrench and set it free for one
minute.
• Repeat this three times.
Result
• Re-tighten the connecting portion with
torque wrenches.
–24–
¤
Set the both 3-way(liquid side) and 3-way(gas side) valves to open position with the Hexagonal
wrench for the unit operation.
¤
Checking a gas leakage for the left piping
• Connect the manifold gauge to the service port of 3-way(gas side) valve.
Measure the pressure.
• Keep it for 5 - 10 minutes.
Ensure if the pressure indicated on the gauge is as same as that of measured at first time.
CLOSE
CLOSE
Closed
Closed
Indoor unit
Outdoor unit
Liquid side
Gas side
6. Operation
–30–
Display
¤
START/STOP BUTTON
Operation starts when this button is pressed and
stops when the button is pressed again.
¤Ł
OPERATION MODE SELECTION BUTTON
Used to select the operation Mode.
¤Ø
ROOM TEMPERATURE SETTING BUTTONS
Used to select the room temperature.
¤Œ
INDOOR FAN SPEED SELECTION
Used to select fan speed in three steps-low, med,
high.
¤º
FAN OPERATION LAMP
¤
COOLING OPERATION LAMP
¤
SOFT DRY OPERATION LAMP
¤
HEATING OPERATION LAMP
¤
DEFROST OPERATION LAMP
¤
AUTO OPERATION LAMP
¤æ
DUCT AIR FLOW LAMP(OPTION)
¤
OUTDOOR UNIT OPERATION LAMP
¤
TIMER SETTING BUTTON
(OPERATION STOPS AT ON)
¤
TIMER OPEATION LAMP
¤ı
ELECTRIC HEATER OPERATION LAMP
§
ELECTRIC HEATER OPERATION BUTTON
(OPTION)
MOD
E
DUCT
OUT DOOR
ROOM TEMP. SET TEMP.
L
H
MOD
E
DUCT
OUT DOOR
ROOM TEMP. SET TEMP.
L
H
13
14
7
2
3
4
12
1
10
6
5
11
7
13
2
3
4
12
1
16
8
9
6
5
14 11 15
–31–
Valve cap
Open position
Closed position
Pin
Service
port
Service
port  cap
To outdoor unit
Flare nut
To
piping
connection
Valve cap
Open position
Closed position
Pin
Service
port
Service
port  cap
To outdoor unit
Flare nut
To
piping
connection
Works
Shaft position
Shaft position
Service port
Shipping
Closed
Closed
Closed
(with valve cap)
(with valve cap) 
(with valve cap) 
1.
Air purging
Open
Closed
Open
(Installation)
(counter-clockwise)
(clockwise)
(push-pin)
Operation
Open
Open
Closed
(with valve cap)
(with valve cap)
2. 
Pumping down
Open
Open
Open
(transferring) 
(clockwise)
(counter
(connected 
-clockwise)
manifold gauge)
3. 
Evacuation
Open
Open
Open
(Servicing)
(with charging 
cylinder)
4. 
Gas charging
Open
Open
Open
(Servicing)
(with charging 
cylinder)
5.
Pressure check
Open
Open
Open
(Servicing)
(with charging
cylinder)
6.
Gas releasing
Open
Open
Open
(Servicing)
(with charging
cylinder)
3-Way Valve (Liquid Side)
3-Way Valve (Gas Side)
7. 3-Way Valve
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