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SiMT041311E
Tips for Servicing
Tips for Servicing
192
1. Tips for Servicing
1.1
Pump Down Operation
Outline
In order to protect the environment, be sure to conduct pump down operation when relocating or
disposing the unit.
Detail
1) Remove the valve caps from the liquid stop valve and the gas stop valve.
2) Carry out forced cooling operation.
3) After 5 to 10 minutes, close the liquid stop valve with a hexagonal wrench.
4) After 2 to 3 minutes, close the gas stop valve and stop the forced cooling operation.
5) After the operation, reattach the valve caps.
Refer to forced cooling operation below.
1.2
Forced Cooling Operation
Indoor Unit
Gas stop valve
Close
Liquid stop valve
Valve cap
Hexagonal
wrench
(R19737)
Item
Forced Cooling
Conditions
The forced cooling operation is allowed when both the following conditions are
met.
1) The outdoor unit is not abnormal and not in the 3-minute standby mode.
2) The outdoor unit is not operating.
Start
Press the forced cooling operation ON/OFF button (SW1) on the indoor unit
for 5 seconds.
Command
frequency
30 Hz
End
The forced cooling operation ends when any of the following conditions is
fulfilled.
1) The operation ends automatically after 15 minutes.
2) Press the forced cooling operation ON/OFF button (SW1) on the indoor unit
again.
3) Press the ON/OFF button on the remote controller.
Others
The protection functions are prior to all others in the forced cooling operation.
ON/OFF button
(R19738)