LG W09TI Manual De Instalación página 22

Bleeding
The air and humidity left inside the refrigerant
circulation can cause compressor malfunction. After
having connected the indoor and outdoor units, bleed
the air and humidity from the refrigerant circulation
using a vacuum pump.
Service port
1
Unscrew and remove the caps from the 2-way
and 3-way valves.
2
Unscrew and remove the cap from the service
port.
3
Connect the vacuum pump hose to the service
port.
4
Operate the vacuum pump for 10 - 15 minutes
until an absolute vacuum of 10 mm Hg has been
reached.
5
With the vacuum pump still in operation, close
the low - pressure knob on the vacuum pump
coupling. Stop the vacuum pump.
6
Open the 2-way valve by 1/4 turn and then close
it after 10 seconds. Check all the joints for leaks
using liquid soap or an electronic leak device.
7
Turn the body of the 2-way and 3-way valves.
Disconnect the vacuum pump hose.
8
Replace and tighten all the caps on the valves.
22
Vacuum pump
3-way valve diagram
Connect to indoor unit
Connect to
outdoor unit
Valve core
Refrigerant flow direction
Indoor unit
3-way valve
7 Turn to fully
Service
port nut
2 Turn
Valve cap
8 Tighten
Open position
Spindle
Needle
Service port
cap
2-way valve
6 Open 1/4 turn
7 Turn to fully
open the valve
1 Turn
Valve cap
8 Tighten
EN
open the valve
1 Turn
8 Tighten