To Remove The Pinched Pipes - Daikin VRV 5 RXYA8A7Y1B Installer And User Manual

18.2.7 To remove the pinched pipes

RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
WARNING
Any gas or oil remaining inside the stop valve may blow off the pinched piping.
Failure to observe the instructions in procedure below properly may result in
property damage or personal injury, which may be serious depending on the
circumstances.
Use the following procedure to remove the pinched piping:
1 Make sure that the stop valves are fully closed.
2 Connect the vacuuming/recovery unit through a manifold to the service port
of all stop valves.
a
b
a Service port
b Stop valve
3 Recover gas and oil from the pinched piping by using a recovery unit.
CAUTION
Do NOT vent gases into the atmosphere.
4 When all gas and oil is recovered from the pinched piping, disconnect the
charge hose and close the service ports.
5 Cut off the lower part of the gas, liquid and equalising stop valve pipes along
the black line. Use an appropriate tool (e.g. a pipe cutter).
WARNING
NEVER remove the pinched piping by brazing.
Any gas or oil remaining inside the stop valve may blow off the pinched piping.
6 Wait until all oil has dripped out before continuing with the connection of the
field piping in case the recovery was not complete.
a
b
18 Piping installation
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Installer and user reference guide
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