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Type DK-15 and DK-25 Air Circuit Breaker
It wou l d be difficul t to over -emphasize the
importance of adequate care of a l l protect! ve devices .
To assure proper fu nctioning , they shoul d be the sub
ect of periodica l , sy stematic a nd intel lige nt inspec
j
tion .
Even the sma l lest details of required mainten
ance shou l d not be neglected if
equipment a nd service are to be avoided .
must include occasional checks on cal ibration as wel l
a s on the coordination and freedom of a l l moving parts .
The purpose of this Instruction Book on the D K circuit
breakers is to provide a guide for th ose charged with
these responsibilities � It is not possible to ou tline
a procedure that wil l apply in
quency
anQ character of inspection wil l for the most
part be
a matter of experience .
monthly inspection,
annua l ly ,
shou l d be a minimum .
glad to furnish such
be needed to
amplify or clarify the .se
Preface
costly
a l l
cases .
I n genera l ,
with a thorough inspection semi
rhe
Company wi l l be
additional
information
failures
of
Maintenance
The fre
light
a s may
instructions .
..
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