Siemens 3AH3 Instruction Manual page 5

Hazardous Procedures
In addition to other procedures described in
this instruction manual as dangerous, user
personnel must adhere to the following:
1. Always work only on a de-energized
circuit breaker. The circuit breaker should
be isolated, grounded and have all
control power removed before
performing any tests, maintenance or
repair.
2. Always perform maintenance on the
circuit breaker after the spring-charged
mechanisms are discharged (except for
test of the charging mechanisms). Check
to be certain that the indicator flags read
OPEN and DISCHARGED.
3. Always let an interlock device or safety
mechanism perform its function without
forcing or defeating the device.
Field service operation and warranty
issues
Siemens can provide competent, well-
trained field service representatives to
provide technical guidance and advisory
assistance for the installation, overhaul,
repair and maintenance of Siemens
equipment, processes and systems. Contact
regional service centers, sales offices or the
factory for details, or telephone Siemens
field service at 1-800-347-6659 or 1-919-
365-2200 outside the U.S.
For medium voltage customer service
issues, contact Siemens at 1-800-347-6659
or 1-919-365-2200 outside the U.S.
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