- 29 -
ON
DIP SW
Interface Board
LED2
(Green)
LED1
(Red)
fig. 24 - Location of DIP switches and LEDs on the
hydraulic unit interface board
▼
Recovering the refrigerant in the outdoor unit
Before performing any maintenance, make sure that all power supplies
have been cut off.
Stored energy: after cutting off the power supplies,
wait for 1 minute before accessing the internal parts of the equipment.
OFF
ON
1
2
U0629273-A
Perform the following procedures to collect the
refrigerant.
-
1
- Switch the start/stop switch to the 0 position
(mark
3
,
fig. 9, page 13
). Disconnect the outdoor
unit's power supply.
-
2
- Remove the front panel. Open the power control
box. Then turn
ON
the
DIP SW1
on the interface
board,
-
3
- Reconnect the power supply. Switch
the start/stop switch to position 1.
(The green and red LEDs start flashing; 1s on / 1s off).
The outdoor unit begins cooling operation about
3 minutes after being switched on.
-
4
- The circulation pump starts.
-
5
- Close the liquid valve on the outdoor unit
maximum
30 secs after the outdoor unit starts.
-
6
- Close the gas valve on the outdoor unit when
the pressure is below 0.02 relative bar read on the
Manifold
, or 1-2 minutes after the liquid valve has been
closed, while the outdoor unit continues to operate.
-
7
- Disconnect the power supply.
-
8
- Recovery of the refrigerant is complete.
Notes:
-The pump down operation cannot be activated even
if
DIP SW1
is set to
ON
while the heat pump is in
operation.
-Do not forget to switch
DIP SW1
back to
OFF
after
the pump down operation has been completed.
-Select the heating mode.
-If the pump down operation fails, try the
operation again by turning the machine off and
opening the "liquid" and "gas" valves. Then after
2-3 minutes, restart the pump down operation.
Waterstage / Installation / 2011 - EN
Summary of Contents for Waterstage WOYK150LJL
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Page 39: ... 39 fig 33 Cable passages Power cables Sensor cables Waterstage Installation 2011 EN ...
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