16
|
Disposal
Installer reference guide
209
EWAA011~016DA + EWYA009~016DA
Packaged air-cooled water chillers
and packaged air to water heat pumps
4P620242-1 – 2020.06
3
Activate the recovery mode.
Result:
The unit opens the electronic expansion valves.
4
Recover refrigerant from the 3 service ports.
5
Deactivate the recovery mode.
Result:
The unit returns the electronic expansion valves to their initial state.
16.1.1 To open the stop valves
Before recovering refrigerant, make sure the stop valves are open.
a
b
c
a
Service port and service port cover
b
Stop valve
c
Stop valve cover
1
Remove the stop valve cover.
2
Insert a hexagon wrench into the stop valve and turn counterclockwise to
open.
16.1.2 To manually open the electronic expansion valves
Before recovering refrigerant, make sure the electronic expansion valves are open.
When power is OFF, this has to be done manually.
c2
c1
1
2
3
c3
c1
Electronic expansion valve
c2
EEV coil
c3
EEV magnet
1
Remove the EEV coil (
c2
).
2
Slide an EEV magnet (
c3
) over the expansion valve (
c1
).
3
Turn the EEV magnet clockwise to the fully open position of the valve. If you
are not sure about what the open position is, turn the valve in its middle
position so that refrigerant can pass.
Summary of Contents for EWAA0 DAV3P Series
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