6. Interlock switches
•You can test continuity of safety interlocks and monitor switch by using switch tester or ohmmeter.
•The switch operation is checked by zero/unlimited.
the meter should indicate zero resistance.
• The sequence of check is interlock monitor switch; primary and secondary interlock switched check.
1) In case of interlock monitor switch check
POWER |
|
|
SUPPLY | PRIMARY |
|
CORD | INTERLOCK | |
| INTERLOCK SWITCH | |
| MONITOR | |
|
| |
|
| SWITCH |
| OHHMETER |
|
|
|
|
Condition
1)Door is opened.
2)Common terminal of the monitor switch disconnected.
2) In case of primary interlock switch check.
|
|
| Condition |
|
|
| 1) Door is closed. |
POWER |
|
|
|
SUPPLY | PRIMARY |
|
|
CORD |
|
| |
INTERLOCK SWITCH | INTERLOCK |
| |
|
| ||
|
| MONITOR |
|
|
| SWITCH |
|
| OHHMETER |
|
|
|
|
|
|
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