LG Multi V Manual&Nbsp;

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Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Function
4.5 Pump Down
This function gathers the refrigerant present in the system to ODU
Use this function to store refrigerant of system in ODU for leakage or IDU replacement.
Close liquid SVC valve.
Open gas SVC valve.
Power Reset
after Dip switch No.10 ON
All IDU cooling operation
Press the black button
Note 1)
Note 2)
Main PCB
SW02B
Yes
Low pressure < 229kpa
IDU, ODU OFF
Power reset after DIP switch No.10 OFF
Pump down completed
Close gas SVC valve
Press the black button
Satisfy low
pressure target?
Main PCB
SW02B
Main PCB
SW01V
ODU SVC valve Setting
Close Open
ODU SVC valve Setting
Note
1. If is displayed, close gas SVC valve of all ODU immediately.
2.
If low pressure descends below 229 kPa(33.2psi), the system turns off automatically. Close the gas SVC valve immediately.
Caution
1.Use pump down function within guaranteed temperature range
IDU : 20~32°C (68~90°F)
ODU : 5~40°C (41~104°F)
2. Make certain that IDU doesn't run with thermo off mode during operation
3. Maximum operation time of pump down function is 30 min.
(in case low pressure doesn't go down)
4. Press black+red button during operation to end pump down.(IDU,ODU off)
No
<Liquid pipe>
<Gas pipe>
Close Close
<Liquid pipe>
<Gas pipe>

LG Multi V Specifications

General

Type	VRF (Variable Refrigerant Flow)
Compressor Type	Scroll
Refrigerant	R410A
Energy Efficiency	High
Control System	Centralized and individual control options
Indoor Units	Multiple types available (e.g., ceiling cassette, wall-mounted, ducted)