GE AK-2-15 Installation And Operation Manual page 8

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Installation and Operation of Type AK Power Circuit Breakers GEK-7302
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MAINTENANCC.
~INiT
IONS
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INSPECTION
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4, Inspect arc quenchers and contacts
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BEFORE INSPECTION OR ANY,,,,&ZAIN-
shorting, or redacing p&s of the breaker,
for breakage or excessive burning.
TENANCE WORK IS DONE, BE SURE THAT
refer to the complete instruction for the
THE BREAKER IS IN THE OPEN '~PGSI-
Should arc quencher barriers or contacts
particular breaker type involved. These
be eroded to half their original thickness
are:-
;;?N&RAy"L ELECTRICAL POWER, BOTH
AND
CONTROL SOURCES
they should be replaced.
Maintenance
Breaker Type
SHOULD ALSO BE DISCONNECTED.
Manual
LUBRICATION
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GEI-50299 AK-2/2A/3/3A-15125, AK
Perioaie inspection of the circuit
In general, the circ& breaker&e-" GEI-g3353
U-2/2A 3/3A-25
breaker is recommended at least once a
quires moderate lumbrication.
AKF-2 2A-25
/
'year, Morefrequent inspections are recom-
Bearing
points and sliding surfaces should be lub-
GEK-7303 AK-2/2A/3 3A-50/75/103,
i ::;*, mended, if severe load conditions, dust,
ricated at the regular inspection periods
AKU-2/2A 3/3A-50
/
3::.
',' moisture, or other unfavorable conditions
with a thin film of GE Lubricant D50H15.
AK-2/2A/3/3A-505/75S/
exist.
Before lubricating remove any hardened
lOChS, AKF-2C/2D/2E
Always inspect the breaker after a
grease and dirt from latch and bearing
GEK-7301 Power Sensor Solid State
short circuit current has been interrupt&,
surfaces with kerosene. ALL EXCESS
Test Instructions :
At the time of inspection, the following A CLEAN CLOTH TO AVOID ANY AC-
LUBRICANT WHOULD BE REMOVED WITH GEK-7310 AK/AK&4/5-50/5OS
checks should be made after,the breaker
CUMULATION OF DORT OR DUST.
GEK-7309' I;
has been de-energized.,
Test I&ructions for In-
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On drawout breakers, the contact sur-
stallation or service of
1. Manually
operrite
the breaker
Power Sensor Equipped
several times, checking for obstructions
face of the disconnect studs should, be '
AK breakers
or excessive friction,
cleaned and greased with GE Grease Specifi-
cation D50H47.
Renewal parts bulletins for the various
'~2. Electrically operate the breaker
-,~:rz:s types of breakers are:
several times (if breaker has electrical
These instructions have as their purr-
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pose the imparting of information of a
- Bulletin
"*<::,
'~3 control) to ascertain whether the electrical
Breaker Type
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attachments are functioning properly.
general nature concerning the installation
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GEF-4149 AK-2-15/25 ' _
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and operation of Type AK power circuit
breakers.
GEF-4150 AK-2-50
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3. Remove the arc quenchers by re-
If more complete and specific
GEF-4395
AK-2/2A/3/3A-75 '
information
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required, such as might be
moving the channel shaped retaining bar.
GEF-4396 AK-2/2A/3/3A-109
: needed for overhauling the breaker, trouble
GET-4527 AK-4/5-50
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