Maintenance - Siemens UL 1066 Operating Instructions Manual

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Maintenance

Hazardous voltage.
Will cause death, serious personal injury, or equipment/property damage.
Turn off and lock out all power supplying this device before working on this device.
Only qualified personnel should work on this equipment, after becoming thoroughly familiar with all warnings, safety
notices, and maintenance procedures contained herein and on the devices.
The successful and safe operation of this equipment is dependent on proper handling, installation, operation and 
maintenance.
High speed moving parts.
Can cause serious personal injury.
Discharge the closing spring before inspection and before carrying out any work on the circuit breaker.
Qualified Personnel
For the purpose of this instruction manual and these product labels, a
installation, construction and operation of the equipment and the hazards involved and who, 
in addition, has the following qualifications:
d) Is trained and authorized to energize, de-energize, clear, ground and label circuits and equipment in accordance with
established safety practices.
e) Is trained in the proper care and use of protective equipment in accordance with established safety practices.
f) Is trained in administering first aid.
The WL circuit breaker is designed and constructed to the highest standard of quality, using the best materials available. Design tests and
experience have shown that the circuit breakers can withstand and perform greater than the minimum requirements of the associated
design and performance standards. Because of the variability possible due to ambient conditions, it is recommended that these circuit
breakers be placed on a regular inspection and maintenance cycle.
Contact assemblies need to be changed depending on their condition, but no later than
- 12,500 operations in FS II up to 1600 A; (3- and 4-pole)
- 10,000 operations in FS II 3200 A; (3- and 4-pole)
- 10,000 operations in FS III; (3- and 4-pole)
The switchgear operator must determine the inspection intervals depending on the conditions under which the circuit breaker is used:
- minimum 1 time per year
- after breaking heavy current
After 1000 switching operations, it is recommended to inspect:
- arc chutes and contact systems
- mechanical functionality
- main and auxiliary circuits, function and connecting quality
- plausibility control of trip unit settings and correction, if necessary 
DANGER
WARNING
" qualified person " is one who is familiar with the
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