X-15 Stainless Steel
Whirlwind
Model No. 3015 Series
Page 17
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HOW TO CHECK A TRIAC
1.
Set the multimeter for ohms or continuity.
2.
Disconnect all machine leads from the triac.
3.
Connect the positive ohmmeter lead to MT2 and the negative lead to MT1. The ohmmeter
should indicate no continuity (OL) through the triac.
4.
Using a separate jumper lead, connect the gate of the triac to MT2. The ohmmeter should
indicate continuity. (less than 100 ohms)
5.
Reconnect the triac so MT1 is connected to the positive ohmmeter lead and the negative
lead to MT2. The ohmmeter should indicate no continuity (OL) through the triac.
6.
Using a separate jumper lead, connect the gate of the triac to MT2. The ohmmeter should
indicate continuity. (less than 100 ohms)
Triac - Top View
