36
D Series Modular Air-cooled Scroll Chillers
Service Manual
4. Loose
screws at the
base of the
compressor
Remove four screws at the base
ƹ
R e m o v e s c r e w s w i t h a n a d j u s t a b l e
wrench or a socket wrench.
ƹ
Collect screws in case of loss.
5. Replace
the
compressor
ƹ
Remove the compressor and do not damage
the rubber pad.
ƹ
Package the removed compressor to
prevent moisture entering.
ƹ
Place a new compressor at the base.
ƹ
Tighten screws.
6 Connect the
pipeline and
power cord
Wire the power cord
ƹ
Connect the suction and discharge lines
to the compressor by brazing. Note that
nitrogen shall be charged during brazing.
ƹ
After brazing, use high-pressure nitrogen
for leakage test.
ƹ
Energize the unit and manually close the
AC contactor of the compressor to let the
compressor run for 2~3 seconds.
ƹ
When the compressor runs reversely,
sharp sound will generates.
Note: after the compressor is replaced, most amount of oil will still remain in the system, which will not affect
the reliability of the newly installed compressor but will increase the running resistance to the rotor and increase
electricity consumption. Therefore, a valve should be installed at the lower part of the inlet of the suction line to
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