GE AKR-30 Series Maintenance Manual page 32

SECTION 7-Breaker Maintenance (Cont.)
7.1 4.1 BUFFER ADJUSTMENT
Referring to Fig. 40, with the breaker closed and the
mechanism not reset, a .005 " min. clearance must exist
between the end plate assembly and the buffer nut as
shown. Thi s dimension is factory set. It can be reset by
tightening the buffer nut.
screwdriver and tighten using a socket on the bolt head
opposite the nut. When tig htening this assembly don't
over compress the neoprene washers by overtightening
the assembly. These washers absorb the breaker open­
i ng shock.
Referring to Fig. 41 , with the breaker open, a .040"
maximum clearance can exist between either of the end
plate assemblies and the buffer bolt heads as shown. If
a larger clearance exists, close it up by unscrewing the
buffer assembly i nvolved.
Fig. 42 shows a buffer assembly prior to being installed
in a breaker. The dimensions given establish the number of
spacers that are used.
7.1 5 TRIP LATCH ADJUSTMENT
The reset position of the trip latch is set by the adjust·
ment screw shown in Fig. 43. The adjustment is correct if
three and one-half turns of the adjustment screw causes a
closed breaker to trip. If this check is made, the screw must
then be set back, or unscrewed, three and one-half turns.
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Hold the nut with a
FIG. 43
TRIP
LATCH ADJUSTMENT
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NEOPRENE WASHERS
FIG. 4 2 BUFFER ASSEMBLY
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