Ringer Capacitor; Assembly Of Parts - NORTHERN ELECTRIC NE-500 Identification, Installation, And Maintenance

(e) All contact springs, including those which
make when the key is unoperated , shall have
perceptible follow (approximately 0.010
inches).
(f)
All normally closed contacts shall break
before any normally open contacts make.
(g) Normally closed turnbutton contacts shall
have a break of at least 0.01 5 inches.
Normally open contacts shall have a break of at
least 0.025 inches.
D. Ringer Capacitor
5.1 5
An
externally-mounted QCC 12A capacitor
may be used to replace an open or shorted
ringer capacitor in the NE-425QE I network. The
ringer capacitor is connected between terminals A
and K on the ne twork (Fig. 17).
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 I 2A capacitor. T his
connector consists of a terminal for connecting
two spade-tipped leads together, and an insulating
sleeve. (Fig. 17 .) Connect one side of t he QCC l 2A
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
6.0 I Mechanical faults in the replaceable parts,
detected by visual inspection or electrical
N 1!-42SQE1
1~54-57
(GNI
, ( I
INSU LATING SLEEVE -
CIR1
rn
lX1
CAI _ ·
CXJ
I
[fl ,
Fig. 17 - Replacing Defective Ringer Capacitor
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