Daikin VRV IV+ Service Manual page 85

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3 Disconnect the Faston connectors from the compressor wire
terminals U, V and W.
a a
a
a Faston connectors
INFORMATION
Note the position of the Faston connectors on the
compressor wire terminals to allow correct connection
during installation.
Remove the crankcase heater, see
heater" on page 87.
4 Cut the compressor pipes (below the soldered joint) using a
pipe cutter.
a Compressor pipe
5 Remove the 3 nuts and remove the compressor from the unit.
a Nut
b Compressor
c Damper
6 Remove the 3 dampers from the compressor.
INFORMATION
The compressor dampers may look different.
7 Remove the bushings and keep them for re-use.
8 Keep the putty for re-use.
9 To install the compressor, see
page 84.
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ Heat Pump
ESIE18-14 – 2019.07
"To remove the crankcase
a
a
"3.2.2 Repair procedures" on
To install the compressor
1 Check the state of the dampers. Replace if worn.
2 Install the 3 dampers in the correct location on the unit.
a Nut
b Compressor
c Damper
INFORMATION
The compressor dampers may look different.
3 Remove the caps from the compression pipe and suction pipe.
CAUTION
The oil in the compressor is hygroscopic. Therefore
remove the caps from the compressor pipes as late as
possible.
4 Supply nitrogen to the refrigerant circuit. The nitrogen pressure
MUST NOT exceed 0.02 MPa.
5 Wrap a wet rag around the compressor pipes and solder the
compressor pipes to the refrigerant pipes.
a Compressor pipe
CAUTION
Overheating the compressor pipes (and the oil inside the
compressor pipes) will damage or destroy the compressor.
6 After soldering is done, stop the nitrogen supply after the
component has cooled‑down.
7 Install the putty in the correct location.
8 Connect the Faston connectors to the compressor wire
terminals U, V and W
3 Components
a
a
Service manual
85