Part 4 Trouble Shooting

1. 2-Way,3-WayValve

2-way Valve (Liquid Side)

3-way Valve (Gas Side)

 

 

Valve cap

 

Hexagonal wrench (4mm)

 

Open position

Flare nut

Flare nut

Closed position

Open position

 

 

Pin

Closed position

 

 

 

 

 

To

To

 

 

piping

piping

Service

Service

connection

connection

port cap

port

 

 

To outdoor unit

To outdoor unit

 

 

operating device

Shaft position

Shaft position

Service port

 

 

 

 

 

 

Standard position

Closed

Closed

Closed

(with valve cap)

(with valve cap)

(with cap)

 

 

 

 

 

 

 

 

 

 

 

Air purging

Open

Closed

Open

1.

 

(Installation)

(counter-clockwise)

(clockwise)

(push-pin or with

 

 

 

 

 

vacumm pump)

 

 

 

 

 

 

 

 

Operation

Open

Open

Closed

 

 

(with valve cap)

(with valve cap)

(with cap)

 

 

 

 

 

 

 

 

 

 

 

Pumping down

Closed

Open

Open

2.

 

(clockwise)

(counter-clockwise)

(connected manifold

 

(Transfering)

 

 

 

 

gauge)

 

 

 

 

 

 

 

 

 

 

 

 

 

Evacuation

Open

Open

Open

3.

 

 

 

(with charging

 

(Servicing)

 

 

 

 

 

 

 

cylinder)

 

 

 

 

 

 

 

 

Gas charging

Open

Open

Open

4.

 

(Servicing)

 

 

(with charging

 

 

 

 

 

cylinder)

 

 

 

 

 

 

 

 

Pressure check

 

 

Open

5.

 

(Servicing)

Open

Open

(with charging cylinder)

 

 

 

 

 

 

6.

 

Gas releasing

Open

Open

Open

 

(Servicing)

(with charging cylinder)

 

 

 

 

 

 

 

 

 

 

 

- 35 -

Only for training and service purposes

Page 35
Image 35
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