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(e)
All
contact springs,
including those which
make when the
key is
unoperated, shall
have
perceptible
follow
(approximately
0.0 IO
inches).
(t)
All normally
closed
contacts
shall
break
before
any normally open
contacts make.
(g)
Normally closed turnbutton
contacts shall
have a break
of
at least
0.015 inches.
Nonnally
open contacts
shall
have a
break of
at
least 0.025
inches.
D.
Ringer Capacitor
5.
15
An
externally-mounted QCCl 2A
capacitor
may be used
to
replace
an
open
or
shorted
ringer
capacitor
in
the
NE-425QEI
network. The
ringer capacitor is connected between
terminals A
and K
on the network
(Fig.
17).
INSULATING SLEEVE
-
SECTION 502-5101-201
5.16 When the ringer
capacitor is
shorted, it is
necessary to use
a
QCM l 2A connector
in
conjunction
with the QCC
l
2A capacitor. This
connector
consists
of a terminal for connecting
two spade-tipped
leads
together, and an insulating
sleeve.
(Fig.
17 .) Connect one side of the
QCC 12A
capacitor
to terminal A of
the
network;
leave
the
ringer
lead of this terminal.
Remove
the ringer
lead
from terminal K of the network, and connect it to
the
other side of the QCCl 2A
capacitor,
using the
QCM
l
2A connector.
5.17
Dress and
store
all
leads in a convenient
location,
keeping leads away from the ringer
gongs.
6.
ASSEMBLY
OF PARTS
6.01
Mechanical faults in
the
replaceable parts,
detected by visual inspection or electrical
.G-
QCM12A CONNECTOR
-;;:-
...........
~
Fig. 17
-
Replacing Defective
Ringer
Capacitor
816
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