-58-
(B-138)
(3)
When an 8 oz. scale is hooked over the middle contact spring at the
side of the contact am pul led horizontally at right angles to the
contact spring, it should require 5
to
6
ozs. to cause the middle
contact spring to break contact with the inner contact spring.
Adjust
by
bending the middle contact spring.
(4)
Recheck (2).
(B)
F
o
r MAKE operation the control rel� should be adjusted to meet the
following requirements: (See Figure
S9B)
(l) Hold the rel� plunger operated and hook a 32 oz. scale over the end
of the outer contact spring
and
pull horizontally at right angles
to
the contact spring. It should require 12 to
16
ozs.
to
cause the
outer contact spring to break contact
with
the middle contact spring.
Adjust
by
bending the outer contact spring.
(2) With the rel� plunger held operated, there should
be
.030"
to
.04011
clearance between the contact surfaces of the inner and middle eon
tact springs. Adjust
by
bending the inner contact spring.
(3)
H
o
o
k an 8
oz.
scale over the middle contact spring at the side
ot
the
cont;act
and
�l horizontal.ly at right angles to the contact spring.
I t shoul d require 1-1/2 to 2 ozs.
to
cause the middle contact spring
to break contact with the inner contact spring. Adjust
by
bending
the middle contact spring.
(4)
Recheck (2).
The operating current for the control relq should be between
.050A
and .o60A
when adjusted for either
MAKE
or
BRE1K
operation.
SPJOOIAL INSTRUCTIONS FCR
BASES USED
WITH REOEIVING ONLY
PRINTER
COVERS
The tollowing instructions apply to send-receive-break mechanians
ha'Ving a single upper contact.
Whwn
the printer is used with a receiving on:cy cover, it is necessa:r;r
to
repoa1tion
the send-receive lever,
aa
shown in Ficure
9QA,
to
provide clear
ance tor
the printer cover. Normally the send-reeei ve handle
is
poai tioned
below
the latch handle with the projecting lug
on
the operating end. pointing
upward .
Remove the shoulder screw
and.
l
oc
k
nut used to mount the set¥1-reeei ve
lever
and.
break lever to the bracket. Turn the aem-receive lever over and
position it above the break lever with the projecting lug on the operating end
pointing
downward,
as shown
in
Figure
90A.
Insert the shoulder screw and re
place the lock nut.
The following instructions apply to send-receive-break mechanism
ha'Ving two upper contacts.
When the printer is usecl with a receiving only cover, it is necessa17
to reposition the send-receive lever, the break lever adjusting plate, the
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