Chapter 4 Preparation for Operation
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[WO-8525]
4.Setting the overheat protector
For safety, this unit has an overheat protector as standard equipment. If
the sensor (temperature detector) reaches a temperature higher than
the temperature setting of the overheat protection device, the power
supplies to the heater is cut off.
１
Set the temperature setting of the overheat protector to a value
20°C higher than the drying
temperature (SV temperature setting). When temperature set up revision is needed, rotate dial to 220℃
firstly, then to needed temperature.
For standard specifications, set the temperature setting of the
overheat protector to or less than 180°C.
【REMARKS】
The tempe
rature controller has high and low limit alarm settings. When the high limit alarm
occurs, the heater is turned OFF
and, after the cooling time has elapsed, the blower is turned
OFF, operation stops.
(Both the high and low limits are set to 10°C at the factory before shipping.)
２
Because the operation power is blocked off when a sensor (measurement temperature part) is heated by
the setting temperature of overheat protector, the heater and blower stops and turn off a indicator, too.
After cooling the heater part sufficiently, press CONTROL ON
switch and restart the unit. (Refer to
CHAPTER 5. Operating Procedures).
If the measurement temperature part of overheat protector doesn't become below the setting
temperature, even if press CONTROL ON switch, because the operation power does
careful.
When a safety device is activated, the heater requires about one hour to cool. If the dryer is restarted
before the heater has finished cooling, heat remaining in the heater may cause the overheat pro
to trip again. Take sufficient care regarding the temperature setting when re-starting.
Dry overheat setting unit
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