9
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When the time has elapsed, the heater demagnetises the workpiece, switches off, and generates an acoustic signal
for 10 seconds�
›
Press START/STOP to cancel the acoustic signal and stop the heater�
›
Remove the workpiece with proper handling equipment�
›
The IHN800 is now ready to heat another workpiece with the same settings�
5.5 Temperature Measurement
When the heater is not operating, the temperature of the workpiece can be measured by pressing 0 and TEMP at the same
time� The LED on the START/STOP button flashes during temperature measurement� Press START/STOP to cancel temperature
measurement�
5.6 Change of Temperature Units
Press 0 and BEARING at the same time to switch between °C and °F� The temperature unit setting remains the same even
after disconnection from mains power�
5.7 Demagnetisation
The workpiece is automatically demagnetised when heating is complete� Demagnetisation will not occur if the power is
interrupted or the main switch is switched off� To use the IHN800 for demagnetisation only, select TIME MODE and set the
time to 0�1 minute (6 seconds)�
5.8 Power Level Selection
When heating bearings with an induction heater, most of the heat will be generated in the inner bearing race� The heat will
then be transferred through the bearing� It is therefore important that bearings with small internal clearance or slight preload
are heated slowly� Slow heating ensures that the bearing expands evenly, thereby preventing damage to the bearing�
The shape, weight, size and internal clearances all affect the amount of time required to heat a bearing� The large
variety of bearing types precludes the possibility of providing a specific power level setting for each type� Instead, the
following guidelines are provided:
›
For sensitive bearings (including bearings with C1 or C2 internal clearance) or bearings with brass cages and when
using the small yoke, reduce the power to 50%�
