32
Maintenance and Inspection
Periodic inspection/Maintenance
Warning
●
Before starting inspection or maintenance, disconnect the power plug from the receptacle.
●
Conduct inspection and maintenance only after the oven has cooled down.
●
Do not disassemble the oven.
Caution
●
When you remove dirt or stains from the unit’s resin parts and the control panel, use a soft wet cloth.
Do not use benzene, thinner, cleanser or a hard brush; it will cause deformation, qualitative
deterioration and/or discoloring of the components.
Every month
●
Check the function of the earth leakage breaker.
・
Connect the power code and check the function in the condition of electricity running.
・
At first, turn the earth leakage breaker “ON”.
・
At next, when you push the red test button of the earth leakage breaker with the point of
ballpoint pen, it is normal that the earth leakage breaker becomes “OFF”.
●
Check the operation of independent temperature overheating prevention device.
・
After executing the fixed temperature operation at the appropriate set temperature, set the
operation temperature of the independent temperature overheating prevention device to
the temperature little lower (about 5
℃
) than the fixed temperature.
・
Under normal circumstances, the heater circuit is cut off in a few seonds and the TROUBLE
lamp and Er.07 flashes at the same time, and the alarm buzzer sounds if the alarm buzzer
function is ON.
※
Always perform inspection of the earth leakage breaker and the operation of
independent temperature overheating prevention device before a long continuous
operation or an unattended operation.
Replacement of the HEPA filter
Replace the HEPA filter with a new one if the differential pressure comes up to the values shown
as below while running in the standby state. Contact our sales or service representative.
50Hz Area
60Hz Area
DE410/DT410/DE410U
250 Pa
290 Pa
DE610/DT610/DE610U
200 Pa
230 Pa
