80
Test Operation, Troubleshooting and Maintenance
Replacement of the compressor
Note: be sure there is no refrigerant inside the system and power supply has been cut off before
replacement.
Steps Image Instructions
7. Put back the
front panels.
Put back front panels and
tighten screws.
Note: there would be trapped oil inside the compressor during replacement, which would not affect its
reliability but increase resistance to the rotors and then consume more power. In order to expel it, it would
be better to install another valve at the lower point of the suction line. After that, run the compressor for
ten minutes and then open this valve until no oil comes out. Repeat this operation twice for normal oil
level.
Replacement of the 4–way valve
Note: be sure power supply has been cut off and refrigerant has been reclaimed before replacement.
Steps Image Instructions
1. Remove the
front panel.
• Remove screws at the front panel;
• Loosened screws should be put
together to avoid loss.
• Pull the front panel upwards and
then remove it.
• Properly keep the removed
front panel to avoid from being
damaged.
• Note: there are two clasps at each
panel for connecting with side
panels.
2. Remove the
electric control
box.
• Disconnect electric lines inside
and outside of the electric box.
• Protection measures should be
taken to the internal elements
to prevent them from being
damaged.
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