Seeburg 7800, Руководство по обслуживанию

Страница: 25 / 87

&rn� Manual •41 Models 7800, 1850, 8800 and 9800
armature i s brought down it will
push
the
selector stop pin into
its
normal position. If t
h
e
reset
shaft spring is
too
stiff,
the
armature may
lack
the nec­
essary power
to reset the selec­
tor stop pin. The strength of
the spring may be reduced by re­
moving a turn.
F.
SELECTOR DISC AND STOP PIN
J\DJUSTMEN'f'
Under n
o
rma
l
operating con­
di
t l o
ns, no adjustment
of
the
Selector Disc \Fig. 25,
Item
8)
is necessary. tiowever, if the
Solenoid Drum is removed from the
chassis and dismantled, some ad­
justments should
be checked. If
the
plunger i s
pushed
up
slowly,
the selector stop pin (Fig. 25,
I
te
m
10)
should mechanically
en­
gage the Selector Disc S
t
o
p be­
fore electrical contact i s made
between the
s
o
len
oid
plunger
con­
tact and the contact spring (Fig.
26, Item 13}.
G. SE
L
FJ:::
T
O
R
S.li.AFT
ADJUSTKENT
There is
an adjustment
screw
t:.
t the bottom of
the
sole­
noid
drum assembly which regu­
lates the end thrus t of the
selector s�aft. There should
be
no side thrust of the shaft. The
selector disc, which
is
on the
shaft, should rotate freely.
�hen this adjustment has been
17
made, the locking nut on this
adjustment screw should be
tightened.
H. COUNTER UN IT
Should the counter unit
(Fig.
26,
Item
7)
fail to
regis­
t
er
each selectin(
pulse
or fail
to
register at all, a check
should be made
to
determine posi­
tively that the unit i s actually
defective..
If the unit proves
defective, it should be returned
f
o
r
factory repairs and
adjust­
ment.
The adjustment of this
unit in the field
i s
not recom­
mended.
I. COUNTER RELAY
The counter relay (Fig, 26,
I
t
em
8)
c
o
n
t
r
ol
s
the
coun�er
unit (Fig. 26,
Item
7) .
Each
time the counter
relay contacts
are closed, the co\lllter
unit will
register one more unit on the
dials. Other than seeing that
the contacts of the counter relay
are
kept clean (by
using a con­
tact burnisher when necessary),
no adjustments are recommended
for this unit as the contact ad­
Justments are rather
cr
it
ica
l
.
It
is recommended that defective
units be
returned
to the factory
for adjustment
or
replacement.