－35－
３－３
Overcurrent protection
Caution
Do not forget to fit an earth leakage breaker.
→
Failure to this may lead to tripping of the earth-leakage breaker for the enclosure in the event of electric
leakage.
Selection of a breaker should be made so as to fit the type of the cooler.
・
With the input of power supply, or with the start of cooling operation, Compressor Cooler is subject to starting
current for approx. one second.
Therefore, the selection of an earth leakage breaker should be made so as to assure stable operation without affected
by such current as well as providing effective protection against possible overcurrent thereafter.
・
For earth leakage breakers, use a reference value of 30mA for sensitivity rating as a guide of selection.
４．
Operation
４－１
Caution
Caution
For protection of compressor, wait at least 30 minutes after installation of the unit and then turn on power to
start operation.
Never repeat ON/OFF more than 6 times within an hour.
Frequent switching on and off of a compressor may be a cause of trouble and shorten its lifetime.
Turn up the cooling operation stop temperature of the parameter setting (see page 36) if frequent on-off occurs.
Never put your fingers into the unit or uncover the unit during operation.
Failure to this may be a cause of injury.
Never operate Compressor Cooler leaving the enclosure door open.
Failure to this may lead to excessive condensation and drainage volume as well as creating the possibility to
allow condensate to enter into the enclosure interior.
４－２
Operation panel
４－３
How to change the setting temperature
Caution
Setting temperature should be basically at 35
℃
. Avoid setting an unnecessarily low value which may cause
excessive condensation or drainage.
①
Turn on the unit. The current internal temperature will be indicated on the display.
②
Press the SET button. The current setting temperature will be flashed.
③
Change the setting temperature by the UP and DOWN buttons within the range from 30
℃
to 45
℃
.(Initial
setteing:35
℃
)
④
Press the SET button. The setting temperature has now been changed and the unit restarts operation.
４－４
Compulsory cooling operation (For inspection purposes)
Hold down the UP and DOWN buttons at the same time for 3 seconds or more.
The operation lamp will light and the unit will start compulsory cooling operation.
After a lapse of the time set by parameter, the unit will return to normal operation mode.
Note: Factory setting for compulsory operation is 30 seconds.
Display (Internal temp. indicated when power is on)
Operation lamp (Green)
Lighting
：
Operating
Lights off
：
Cooling operation is suspended
Blinking
：
Compulsory operation is executed
DOWN button
Alarm lamp (Red)
SET button
UP button