Buffer Adjustment; Buffer Adj Ustment; Trip Latch Adjustment; Tri P Latch Adj Ustment - GE AKR-30 Series Maintenance Manual

SECTION 7-Breaker Maintenance (Cont.)
7 . 1 4 . 1 B U FF E R ADJUSTMENT
Referring to Fig. 40, with the b reaker closed and the
m echanism not reset, a . 005" clearance m ust exist be­
tween the end p late assem bly and the buffer nut as shown.
This dimension is factory set. It can be reset by tightening
the buffer n ut. Hold the nut with a screwdriver and tighten
using a socket on the bolt head opposite th e nut. When
tighten ing this assem bly don't over com p ress the neo­
prene washers by overtightening the assem b ly. These
washers absorb the breaker o pening shock.
Referri ng to Fig. 41 , with the breaker open, a .040 "
m ax i m u m c learance can exi st between either of the end
plate asse m b l i es and the buffer bolt heads as shown. If
a larger c learance exi sts, c lose it u p by u n screwing the
buffer asse m b l y i nvolved.
Fig . shows a buffer assembly prior to being i nstalled
42
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 m ust
then be set back, or unscrewed, t ti ree and one-half turns.
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FIG . 43 - TRIP LATCH ADJ USTM ENT
NEOPRENE WASHERS
FIG. 42 - B UFFER ASSEMBLY
WASHERS