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Refrigerant piping work 5CSL0-06B
How to close the stop valve
1. Insert a hexagon wrench into the valve stem, and turn the
valve stem clockwise.
2. When the valve stem cannot be turned any more, stop
turning. Now, the valve is closed.
Service port
Valve stem
Valve cap
Field piping
connection part
Silicon sealant
(Take care not to generate cavity.)
Opening direction Opening direction
Cautions on handling the valve cap
• The valve is sealed in the arrow area. Take care not to
damage the arrow area.
Valve cap
SVC valve
(valve cap attachment area)
• After handling the valve, make sure to tighten the valve
cap securely.
Liquid line Gas line
3.4~4.2 m-kgf 6.3~8.2 m-kgf
Cautions on handling the service port
• Use charge hose equipped with push in the work.
• After the work, make sure to tighten the valve cap securely.
Tightening torque.....8.5~10.3 ft·lbf
Do not apply any force to the valve cap
Using a spanner on the valve cap and the valve body could
cause a refrigerant leak.
Oil Trap
• Necessity of trap
Since there is fear of the oil held inside the riser piping
flowing back into the compressor when stopped and causing
liquid compression phenomenon, or cases of deterioration
of oil return, it will be necessary to provide a trap at an
appropriate place in the riser gas piping.
• Trap installation spacing
NOTE
Spanner
prohibition to
valve cap and
body part
SVC valve of two
hands method
SVC valve of one
hands method
294 Guideline for each installation process
Spanner
Torque
wrench
Torque
wrench
A trap is not necessary when the outdoor unit is installed
in a higher position than the indoor unit.