Allis-Chalmers BWX-6637-5, Instruction Book

Page: 81 / 88

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A
ALLIS-CHALJV!I ERS
150 1 . B E L L ALARM R E LAY
1502. R E L AY CON TACTS
1503. TE HMINAL LU GS
1 504. S PAC E R WASH-E RS
1505. LATCH ING AR M
1506. R E SE T PLUNGER
1507. SPR I N G
FIG. 1 5
T YPICA L B E L L ALA R M
(IV1Af\JUAL RESE T)
DEC.
1 2 , 1 9 6 6
7 1-240 - 5 88 - 4 0 1
The be l l
a l arm
a t t achment f u nc t i on s
t o c l os e o r open
e n
a l a rm
c i rcu i t upon
a u toma t i c overcu rrcnt t r i pp i ng of the b reake r .
The
re l ay c o i I i s w i r ed t o
term i na l s
7 and
8 of
the s ta t i c
t r i p
dev i ce . Th i s f s
a
l a tch i ng- type re l ay
and r
e
l
a y con t a c t s
( 1 502)
a rc res e t t o the
open
pos i t i on s h own by actua t i ng
r
e
s e
t p l unge r ( 1 506) . Spacer washe rs ( 1 504) a r e u s ed t o pos i t i on the re l ey
to ens u r e cor rect
enga gemen t of l a t ch i ng a rm ( 1 50 5 )
wh en res e t t i ng
the
co;1 tac t s .