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SAFETY INTERLOCK CONTINUITY TEST
• Disconnect the oven from the power supply.
• You can test continuity of safety interlocks and monitor switch by using switch tester or ohmmeter.
• The switch operation is checked by the lamp on/off of resistance zero/unlimited.
• The sequence of check is interlock monitor switch; primary and secondary interlock switches check.
• Make circuits like Fig. a, Fig. b, Fig. c for tests.
1) In case of interlock monitor check.
(Lamp on or zero resistance)
Condition : 1) Door is opened.
Condition :
2) Common terminal of the monitor switch
disconnected.
3) In case of secondary interlock switch.
Condition : 1) Door is closed.
2) In case of primary interlock check.
(Lamp on or zero resistance)
Condition : 1) Door is closed.
* (Schematic diagarm of S/W tester)
