224
Servicing
TURN OFF all the power switches.
(10) Disconnect the discharge and suction pipes and the oil discharge pipes and refrigerant injection pipes from the
compressor.
Check that the air pressure in the piping is equal to the atmospheric pressure. Then, cut the pipes at the closer position
to the compressor from each brazing part. After cutting the pipes, remove the pipes from the brazing parts of the
compressor.
NOTE:
1. All the pipes are connected by brazing. When applying the burner to the pipe connections, the oil adhered inside the pipes
may burn. So clear ammable materials around the compressor before the work.
2. Burner work under applying gas pressure is very dangerous. Make sure to cut the pipes rst before burner work.
3. If the oil discharge pipe is disconnected without performing the above procedure (for example, applying burner directly to
the brazing part), the refrigerant oil may spill out from the oil discharge pipe and catch re. Make sure to follow the
procedure for safety
4. When disconnecting the oil discharge pipe, use an oil pan and such in case the remaining refrigerant oil spills.
5. DO NOT throw out the oil collected with the oil pan and such. The oil quantity must be measured afterward.
Tool Pincher, Burner, Oil Pan, Burner (Welder), Pipe Cutter
Remove here by using
burner after cutting.
Cut.
Unit Side
Compressor Side
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