Westinghouse DK-15, Manual

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Type DK Air Circuit Breaker
Preface
It would be difficult to over-emphasize the
importance of care of all protective devices.
To assure proper , they should be the sub-
ject of periodical,systematic and intelligent inspec­
tion. Even the smallest details of required mainten­
ance should not be neglected if costly failures of
equipment and service are to be avoided. Maintenance
must include occasional checks on calibration as well
as on the coordination and freedom of all moving parts.
The plU'pose of this Instruction Book on the
DK
circuit
breakers is to provide a guide for those charged with
these responsibilities. It is not possible to outline
a procedure that will apply in
all cases. The fre­
quency and character of inspection will for the most
part be a matter of experience. In general, light
monthly inspection, with a thorough inspection semi­
annually, should be a minimum. The Company will be
glad to furnish such additional information as may
be needed to amplify or clar these instructions.
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