Gree A Series Service Manual page 123

A Series Modular-type Air-cooled (Heat Pump) Chiller
4. Replace it
with a new
one and clean
the system.
5. 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.
Replacement of the Electrostatic Expansion Valve
Image
(1)Cut off power supply of the
unit;
(2)Reclaim refrigerant;
(3)Remove the middle panel.
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(1)Do use the one with
the same model for
replacement. The one
with different model
can be used after
being approved by
relative technicians;
(2)Wrap it with wet cloth;
(3)Reconnect the main
body with four pipes as
before;
(4)Solder the pipelines
with a soldering gun.
Do charge nitrogen
during de-soldering.
(1)Keep the vacuum
degree to —1.0bar.
Vacuuming period
would be longer for the
repaired unit;
(2)Charged refrigerant
should be the same as
that stated at the
nameplate.
Instructions