ENGLISH
21
AA
Using stop valve
1. Open the cap and turn the stop valve counterclockwise by using a
hexagonal wrench.
2. Turn it until the axis is stopped.
3. Tighten the cap securely.
1. Remove the cap.
2. Turn the stop valve clockwise by using a hexagonal wrench.
3. Tighten the axis until the valve reached the sealing point.
4. Tighten the cap securely.
• Do not apply excessive force to the stop valve and always use special
instruments. Otherwise, the stopping box can be damaged and the
back sheet can leaks.
• If the watertight sheet leaks, turn the axis back by half, tighten the
stopping box, then check the leakage again. If there is no leakage any
more, tighten the axis entirely.
Cap
Service port
Axis
Sealing point
To Open the Stop Valve
To Close the Stop Valve
• When you use the service port, always use a charging hose, too.
• Check the leakage of refrigerant gas after tightening the cap.
• Must use a spanner and wrench when you open/tighten the stop valve.
Adding refrigerant
The outdoor unit is loaded with sufficient refrigerant for the standard piping. Thus, refrigerant must be added if the
piping is lengthened. This operation can only be performed by a qualified refrigeration specialist. For quantity of adding
refrigerant, refer to page 22.
1. Check that the stop valve is closed entirely.
2. Charge the refrigerant through the service port of liquid stop valve.
3. If you cannot charge the refrigerant according to the upper steps, following these :
1) Open both liquid stop valve and gas stop valve.
2) Operate the air conditioner by pressing the K2 key on the outdoor unit PCB.
3) About 30 minutes later, charge the refrigerant through the service port of gas stop valve.
1
Ref.
Gas side stop valve(service port)
Outdoor unit
Indoor unit
Balance
Vacuum pump
Liquid side stop valve(service port)
• Do not charge the refrigerant through the gas side service port.
• If necessary, refer to the pressure table classified by outdoor temperature.
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2011-03-09 오후 9:32:42
