Gree LSQWRF35VM/NaA-M Service Manual page 98

A series modular air-cooled chiller (heat pump)
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Note: be sure power supply has been cut off and refrigerant has been reclaimed before replacement.
Steps
3. Replace it with a
new one and pipes.
4. Vacuum
the system
and recharge
refrigerant.
Note: check the whole system, pipelines and electric lines, cut off power supply and reclaim
refrigerant before replacement.
Steps
1. Reclaim
refrigerant and
remove the middle
panel.
Test Operation, Troubleshooting and Maintenance
Replacement of the 4–way valve
Image
Replacement of the electric expansion valve
Image
• Do use the one with the same
model for replacement. The one
with different model can be used
after being approved by relative
technicians.
• Wrap it with wet cloth.
• Reconnect the main body with four
pipes as before.
• Solder the pipelines with a soldering
gun.
• Do charge nitrogen during
desoldering.
• Keep the vacuum degree to -1.0bar.
Vacuuming period would be longer
for the repaired unit.
• Charged refrigerant should be
the same as that stated at the
nameplate.
• Cut off power supply of the unit.
• Reclaim refrigerant.
• Remove the middle panel.
94
Instructions
Instructions

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