Westinghouse De-ion DB-15, Instructions Manual

Page: 15 / 43

"DB" AIR CIRCUIT BREAKERS
Table No. 3. MOUNTING BOLT SIZES
used, otherwise, the .ends of the bolts may jam
against the coil and short circuit some of the turns.
BOLT
08-15
Thread Length
Tdp
Ji:!·q
X
1JI:!"
Center
Y:!-13
Jt
1 H
Bottom %-16
X
1"
08-25
-
Thread Length
Y:!-13
X
2!.4 H
Ji:!-13
X
1%"
%-16
X
1%"
Use one lock washer only, under the head of
each of these bolts. Care should be taken to make
sure that bolts longer than called for above are not
To adjust the trip nut for proper tripping, first
insert valve lever tool "B" or a 1/is diani
�
ter rod,
in the long delay calibration bracket (left slot) and
raise the valve lever to its maximum position. This
removes all of the time delay and permits the arma­
ture to operate easily. Then insert the push rod
"A"
Fig.
6A
in the top slot of the calibration
bracket and push the armature solidly against the
,1
yoke; close the breaker and adjust the trip nut to
--·--··----------1
OVERCURRENT TRIPPING DEVICE .
1
600 AMP. 60 CY.
0
5#164?823 .
-..;.;.�ERES-
AT 3CCO
D.
I
INJf.
I
�
·
1
�
•
0
600
z
I
1.->o
�co
10
•
!
·euo
1200
LONGER
I lJ'eoi
' HIGHER
SCALEPLATE
131
--
PIN -_
__
136
LONG DELAY PICKUP
CALl BRA TION SPRING
133
VALVE LEVER--
134
/
ROD A
---\-I /
:_
.1·-)j_j-?
INSTANTANEOUS
y -
"
CALIBRATION SCREW . :::_/
·,
125
I I
.
/
VALVE LEVER
TOO L B
•
I
· /
LONG DELAY PICKUP CALIBRATION SCREW
123
LONG DELAY CALIBRATION SCREW
124
BO TTOM
MOLD
108
I:
.
I
RIIBBER fliS(
II S
TR I P NUT
101
TRUARC RING
117
\
L.D. VALVE
, ___
GASKET
\
109
LONG DELAY VALVE
--\-- 110
RESET VALVE SPRING
114
'SPRING SE ,\ T
RLTAIN[R DISC
liS
116
FIG. 6A. Overcurrent Tripping Device-Construction Details
,.
15
., .
-·
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