16
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Piping installation
Installer and user reference guide
74
LRYELRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
5
Tighten the valve cap.
Also see
16.2.4 To handle the service port
▪
Always use a charge hose equipped with a valve depressor pin, since the service
port is a Schrader type valve.
▪
After handling the service port, make sure to tighten the service port cover
securely. For the tightening torque, refer to the table below.
▪
Check for refrigerant leaks after tightening the service port cover.
The figure below shows the name of each part required in handling the stop valve.
a
b
c
a
Service port cap
b
Copper packing
c
Valve cap
Open versus closed
All service ports are of the backseat type and do not have a valve core.
A
B
A
Fully closed
B
Fully open
To open the service port
1
Remove the service port cap with 2 spanners and remove the copper packing.
2
Connect the charge port to the service port.
3
Remove the valve cap with 2 spanners.
4
Insert a hexagonal wrench (4 mm) and rotate counterclockwise until it the
end.
To close the service port
1
Insert a hexagonal wrench (4 mm) and rotate clockwise until the end.
2
Tighten the valve cap.
3
Remove the copper packing of the service port cap.
