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Functional electrical test on breaker may be made to confirm sensors operation. The timing modules
nameplate and rated voltage should be checked to insure it matches breaker closing control voltage.
The timers delay adjustment has been previously set and should not be altered. Removed wire from
on
terminal 2
timer module and insulate. Open breaker and charge opening springs.
closin g
Apply
voltage and observe light emitting diode (led} adjacent to delay adjustment. The led
should be brightly illuminated when the trip latch is fully reset. Depress latch with manual trip level
and observe the led goes out. Release trip lever and the led should come on. This sequence confirms
sensor operation. Do not apply closing control voltage for longer than two minutes while performing
the test.
MA N UAL CHA RGI N G O R C L OSI N G SPRI NG S
T o c harge t he cl osin g sprin gs manual l y , di sc onn ec t con tr ol p ower before i n serti n g the m an u al
c hargi n g crank in t he socke t l oc ated in the cen ter of the l ef t han d op erat or panel . T um the
crank i n a c ountercl ockwi se direc ti on t o ch ar ge the sprin gs. The effor t to c har ge the c l osi n g
sprin gs wi l l fl uc tu ate and wi l l incre ase to a peak and then decre ase . A t the p oint of l e ast
eff ort an audib l e c l i ck wi l l be he ard an d th e effor t to tu m the crank wi l l dr op to nea r zer o.
T he mec han i sm i s n ow ful l y ch arged. Re move man ual c hargi n g crank . T he bre aker may be
c l osed by pul l i n g the manual cl ose pul l rod .
CA UTI O N ! I
The c l osin g spri n gs are ch ar ged thr ou gh the driv in g pa wl an d ratch et wheel an d are th ereb y
ind e xed by the hol din g p awl
wheel .
REMO VA L OF C L O SI NG SPRI N G S
The Closing Springs may be quickly and safety removed from the breaker. Remove two of the four bolts
holding the spring bearing block at the rear of the breaker. These bolts should be diagonally opposite each
other. Insert studs approximately 6" ( 150mm) long in
the spring load
shifting
to
alternating backing
off the studs. To install the closing springs the reverse
spring bearing block top
torqued to 50 ft. lbs. (67.8 N ·m).
CA UTI ON : Han dl e thi s assembl y c aref ul l y- do n ot throw or dr op .
I f the c hargi n g r atche t an d c am s are to be rev ol v ed with spr in gs rem oved , i t i s advi sab l e to
rem ove tw o a l umi num sprin g drive bl ock s (I tem 38, Fig. 8) sec ure d to the ratchet and c am
crankpins by retaining rings. These drive blocks if not removed or held essentially
may jam while revolving the cam and ratchet assembly.
Motor Cutoff Switch -The
become inoperative, the entire unit must be removed and inspected. Replacement may be necessary.
Jv\otor Cut off Swi tc h Ad ju stment - Thi s ad ju stmen t i s most c onven i ently perform ed before i n
Advance ra tc he t and c om a ssembl i es
t he ninth (9) toot h p osi ti on on t he ratchet a s c oun ted c oun tercl ock wi se from area .on ratche t
perip hery w hi c h l ack s two tee th.
Some sprin gb ack can occ ur between tooth p osi ti on s on th e ra tch et
•
(
the 6"
150mm}
long studs.
be even
surface should
with the bracket
88
motor control switch assembly ( Fig. 1 3) is factory adjusted. If it should
to
p osi ti on shown (Fi g. 13). The b ock up p awl mu st occupy
of bolts. Remove the remaining two bolts by
place
The
spring bearing block can
procedure should be used. The
of the frame. The four bolts
-11-
then be backed off by
be
should
in
a horizontal position
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