38
Fig. 17: Measurements
Check whether the filament is faulty, at the filament connections, only 1 Ohm must
be measured. A very high or unmeasured resistance means that the filament is
burnt through and the tube needs to be replaced.
3.4.7.4 Checking the primary voltage on the high voltage transformer:
Mortal danger from electric shock
Exposed power contacts - High Voltage
When checking for induction power, always keep the furnace closed!
On the primary side of the high voltage transformer, you should be able to measure
about 210 V AC; if not, the triac is possibly defective.
220 VAC
(between
contact 2 and 3)
10 VAC