English
11
Pump Down Operation
In order to protect the environment, be sure to pump down when relocating or disposing of the unit.
1) Remove the valve caps on the liquid and the gas stop valves at the pipes for rooms A
and B.
2) Run the unit on forced cooling. (Refer to the instructions below.)
3) After 5 to 10 minutes, close the liquid stop valves at the pipes for rooms A and B
using a hex wrench.
4) After 2 to 3 minutes, stop the forced cooling operation as quickly as possible after the
gas stop valves at the pipes for rooms A and B have been shut off.
5) Turn the power breaker off.
CAUTION
Run the air conditioner to cool both rooms A and B when performing a pump down.
1.
Forced cooling operation
1-1. Using the indoor unit start/stop button.
1) Press the start/stop button on the indoor unit in either room A or B for 5 seconds continuously.
The units in both rooms will start.
2) Forced cooling operation will end after around 15 minutes and the unit will stop automatically. Press the start/stop
button on the indoor unit to force the operation to stop.
1-2. Using the indoor unit’s remote controller
Perform the test operation with the operation mode set to cooling. For the test operation procedure read the installation
manual attached to the indoor unit and the manual of the remote controller.
• Forced cooling operation will stop automatically after around 30 minutes.
To stop the operation, press the ON/OFF button.
CAUTION
If the outside temperature is -10°C or lower, the safety device might start, preventing operation. In this situation, warm the out-
side temperature thermistor on the outdoor unit to -10°C or warmer. Operation will start.
Gas
stop valve
Valve cap
Hexagonal
wrench
Close
Liquid
stop valve
WARNING
The unit is accompanied with the label below. Please read the following instructions carefully.
WARNING
1)
2)
3)
4)
5)
• When the refrigeration circuit has a leak, do not execute pump down with the compressor.
• Use recovery system into separate cylinder.
• Warning, explosive hazard exists when executing pump down.
• Pump down with compressor can lead to self-combustion due to air entering during pump
down.
Used symbols:
1)
Warning sign (ISO 7010 – W001)
2)
Warning, Explosive material (ISO 7010 – W002)
3)
Read Operator’s manual (ISO 7000 – 0790)
4)
Operator’s manual; operating instructions (ISO 7000 – 1641)
5)
Service indicator; read technical manual (ISO 7000 – 1659)
3PEN423316-2K.book Page 11 Monday, May 15, 2017 1:15 PM
