Siemens UL 1066, Operating Instructions Manual

Page: 275 / 334

19 – 14
19.2.4 Function check
- Close the cubicle doors
- Charge closing spring of circuit breakers to be interlocked

(page 6-4)
- Test the various possibilities of the planned interlocking configuration one after the other
- Re-adjust Bowden cables if necessary
Then:
- Discharge the closing spring of the circuit breakers to be interlocked

(page 23-2)
Catalog Numbers
Note
The following maintenance points must be followed:
1 The adjustment of the Bowden cables needs to be checked after the first 100 switching operations and must be readjusted if

necessary.
2 The adjustment of the interlocking device needs to be checked and, if necessary, readjusted every 1000 operations or at least
once every year.
3 During the inspection, the Bowden cables have to be checked against kinks and abrasions, split wires of the exposed

steel cable, damage to the cable housing and the adjustment unit (tube setting with thread and nut) and have to be readjusted

if necessary. In addition, the movability of movable parts of the interlocking device in their bearings needs to be examined.
4 In extreme environmental conditions (e.g. increased environmental temperature or exposure to chemicals) maintenance checks
needs to be performed more frequently.
5 When maintaining the circuit breaker, check the operation of the interlock device and replace as necessary. See table (page -14) .
Mechanical Interlocking Catlog number
Mechanical interlock assembly WLNTLK
Qty.(1) Bowden Cable - 2m WLNTLWIRE2
Qty.(1) Bowden Cable - 4.5m WLNTLWIRE4