9
■
English
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 cap from liquid stop valve and 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 forced cooling operation.
Forced cooling operation
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Using the indoor unit ON/OFF switch
Press the indoor unit ON/OFF switch for at least 5 seconds. (Operation will start.)
• Forced cooling operation will stop automatically after around 15 minutes.
To force a trial operation to stop, press the indoor unit ON/OFF switch.
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Using the indoor unit’s remote controller
1) Press “MODE” button and select the cooling mode.
2) Press “ON/OFF” button to turn on the system.
3) Press both of “TEMP” button and “MODE” button at the same time.
4) Press “MODE” button twice. (
will be displayed and the unit will enter trial
operation.)
• Trial operation will stop automatically after around 30 minutes. To stop trial
operation, press “ON/OFF” button.
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Using the outdoor unit forced cooling operation switch (with standby
electricity saving function turned off)
Push on “
” (SW1) with a screwdriver. (Operation will start.)
• Forced cooling operation will stop automatically after around 15 minutes.
To force a trial operation to stop, press the forced operation switch (SW1).
CAUTION
• When pressing the switch, do not touch the terminal block. It has a high voltage, so doing so may cause electric shock.
• After closing the liquid stop valve, close the gas stop valve within 3 minutes, then stop the forced operation.
Facility Setting (cooling only model)
(cooling at low outdoor temperature)
This function is limited only for facilities (the target of air conditioning is equipment (such as computer)). Never use it in
a residence or office (the space where there is a human).
1) Cutting jumper 4 (J4) on the circuit board will expand the operation range down to –15°C. However it will stop if the outdoor
temperature drops below –20°C and start back up once the temperature rises again.
CAUTION
• If the outdoor unit is installed where the heat exchanger of the unit is exposed to direct wind, provide a windbreak wall.
• Intermittent noises may be produced by the indoor unit due to the outdoor fan turning on and off when using facility settings.
• Do not place humidifiers or other items which might raise the humidity in rooms where facility settings are being used.
A humidifier might cause dew jumping from the indoor unit outlet vent.
• Cutting jumper 4 (J4) sets the indoor fan tap to the highest position. Notify the user about this.
Gas
stop valve
Valve cap
Hexagonal
wrench
Close
Liquid
stop valve
Service port
1
2
3
The selective connector for standby electricity
saving in use (with standby electricity saving
function turned off)
Push here
Screwdriver
Power supply
terminal block
1
2
3
S70
S40
S2
S90
J5
J4
J3
Cut J4 with nippers
or a similar tools.
01_EN_3P203824-8H.fm Page 9 Tuesday, October 26, 2010 8:33 PM
