Johnson Controls YVAHP0721CW Series, Service Manual

Page: 302 / 416

4-18
SM-16007
MAINTENANCE
TURN OFF all power source switches.
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Check that the pressure inside the pipe is equal to the atmospheric pressure. Cut the pipe at the
closer position to the compressor from the braze joint. After cutting, remove the pipe from the brazing
part of the compressor.
NOTES:
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the compressor.
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before applying heat from a torch.
Tool Torch, Pipe Cutter
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at the closer position to the compressor from the braze joint, so that the refrigerant oil remaining inside
the compressor does not spill from the oil discharge pipe. Before disconnecting the oil discharge pipe
at the system piping side, check that the oil at the brazing part is completely removed.
NOTES:
1. If the oil discharge pipe is disconnected without performing the above procedure (for example,
applying the torch directly to the braze joint), the refrigerant oil will spill from the oil discharge pipe
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2. When disconnecting the oil discharge pipe, use an oil pan in case the remaining refrigerant oil
spills.
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Oil quantity is measured afterward.
Tool Pincher, Torch, Oil Pan
Cut
Suction Pipe
Cut
Remove here
by using torch
after cutting.
Discharge
Pipe
Oil
Discharge
Pipe
Oil Pan
Oil
Discharge
Pipe
Remove here
by using torch
after cutting.