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●
Be sure to pull out the power cord unless necessary before trying to do inspection and
maintenance works.
●
Start these works after the device has returned to the normal temperature.
●
Never try to disassemble the unit.
●
Wipe off any dirt with a tightly wrung soft cloth. Never try to clean the unit with benzene,
thinner or scouring powder, or rub with a scrubbing brush. Deformation, degradation or
discoloration may result.
Every month
● Inspect the functions of the ELB.
・Test shall be performed with the power cord connected and power is being supplied to the unit.
・First turn the ELB to "off."
・Then, turn the ELB "on" and press the test button on the device with a ball-point pen to check
whether it is turned off to indicate that it is in the normal state.
● Check operation of the standalone overheat preventive device.
・Carry out fixed temperature operation at an appropriate set temperature and then set the operating
temperature of the standalone overheat preventive device to a temperature lower than that one by a
few degrees (about 5℃).
・ If the device is normal, the heater circuit will be shut off in several seconds and, at the same time, the
"Alarm" sign and Er07 come on and the alarm buzzer sounds.
● Clean the dust filter and the fins of the condenser.
・Remove the filter frame of the front. (attached with magnets)
・Pull out the filter out of the frame and remove dusts using an electric cleaner.
・Remove dusts on the condenser fins using an electric cleaner.
Caution
・ When the condenser is clogged with dusts or foreign particles, degradation of its cooling
capacity or a malfunction may result.
・ During cleaning, take care not to crush condenser fins which are soft.
・ Take care not to cut your finger with keen edges of the fins.
* Never fail to carry out checking of the ELB and operation of the overheat preventive device above
prior to long-term continuous operation or unmanned operation during nighttime.
◆ If you have any questions, immediately contact your dealer, one of our sales offices or our general
customer service center.
Filter
6. Maintenance procedures
Daily inspection/maintenance
60
Warning
Caution
Evaporator
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