LG Electronics 3828A20025U manual Vacuum Drying of the Connecting Pipes and the Indoor Unit

Installation of Unit

VacuumDrying oftheConnectingPipesandtheIndoorUnit

The air which contains moisture remaining in the refrigeration cycle may cause a malfunction on the compressor.

1.Confirm that both the liquid side valve and the gas side valve are set to the closed position.

2.After connecting the piping, check the joints for gas leakage with gas leak detector.

3.Remove the service port nut, and connect the gauge manifold and the vacuum pump to the service port by the charge hose.

4.Vacuum the indoor unit and the connecting pipes until the pressure in them lowers to below - 76cmHg.

5.Remove the valve stem nuts, and fully open the stems of the 2-way and 3-way valves with a hexagon wrench.

6.Tighten the valve stem nuts of the 2-way valve and 3-way valve.

7.Disconnect the charge hose and fit the nut to the service port. (Tightening torque: 1.8kg.m)

Indoor unit	Liquid side
	Closed	Outdoor unit
	2-way valve/
	3-way valve
	Gas side
	3-way
	valve	Closed
Vaccum pump
OPEN	CLOSE
		Installation Manual	17

ENGLISH