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the c l utch pre s sure and, consequent l y, the current va l u e whi ch wi l l c ause the c l utch
1
to s
i p .
Note that too frequent or too
overhe at the coi l s .
I NSTANTANEOUS OVERCURRENT UNIT ( D I RECT I ONAL L Y CONTROLLED )
T he sect i on BEAR I NGS, u nder D I RECT I ONAL UNIT, a l so app l i es to the be ar i ngs of
the i n s tant aneous overcurrent u n i t .
T he sect i on CUP AND STATOR, under D I RECT I ONAL UNIT, a l so appl i es to the cup and
stator of the i n stantaneous overcurrent u n i t .
Cont act Adj u stments
T he cont act gap m ay be adj us ted by l oosen i n g s l i ght l y the screw at the front of
the cont act support .
barrel to rot ate i n i t s s l eeve .
The backstop s crew fastened wi th a l o cknut shou l d ho l d the movi n g contact arm
i n a neutral pos i t i on , i . e . , wi th the arm poi nt i n g d i rect l y forwar d .
rotat i n g the barre l , advance the stat i on ary con t act u nt i l i t j us t touches the movi n g
cont act .
Next, back i t away two a n d a hal f turns to obta i n approxi mate l y
g ap .
L ast, t i ghten the screw whi ch secures the barre l .
The movi n g contact may be removed by
the cont act arm and s l i d i n g i t from u n der the screw he ad .
CLUTCH ADJ USTMENT
The c l utch o n the i n st antan eou s over current u n i t can be adj u s ted by means of
the screw l oc ated on the r i ght-han d s i de of the movi n g cont act arm .
i s l oosened and the screw turned i n, the current at whi ch the c l utch wi l l s l i p wi l l
be i ncreased .
P l ace the t ap p l u g s i n the l ower r ange t aps ( s er i es ) .
u n i t cont acts c l osed .
starts t o s l i p f a l l s wi thi n the l i m i t s l i sted i n T abl e
D I RECT I ONAL L Y CONTROL L ED I OC UNIT CLUTCH ADJU STMENT
P I CKUP RANGE
2 - 16
10 - 80
Note that too frequent or too l ong of an app l 1 c at 1 on of these currents w1 l l
overheat the co i l s .
GEK-49849
The s crew shou l d be o n l y l oose enough to al l ow the cont act
Adj ust the c l utch so that the current at whi ch the c u p j us t
TABL E
SUDDENLY APPL I ED CURRENT
CLUTCH MUST NOT SL I P ( AMP S )
12
44
1
1
o n g app
i c at i o n of these currents wi
1
oos e n i n g the s crew whi ch secures i t to
14.
14
SUDDENL Y APPL I ED CURRENT
CLUTCH MUST SL I P ( AMP S )
2 7
Then by
0. 080
i n ch
If the l ocknut
Ho l d the d i rect i onal
15
58
1 1
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