3 - 1 1 5 .
S i n g l e / P a r a l l e l
O p e r a t i o n
S w i t c h .
See ( 6 8 , f i g . 3 - 1 8 ) and proceed as follows:
CAUTION
Open DC CONTROL CIRCUIT
BREAKER ( 2 7 , f i g . 3 - 1 7 )
before testing or replacing
OPERATION switch (68).
a.
Testing.
(1) Gain access to rear of control cubicle panel
( 9 6 , f i g . 3 - 1 8 ) .
(2) Tag the center leads of BATTLE SHORT
switch (62).
(3) Remove screws and lockwashers which sec-
ure tagged leads to BATTLE SHORT switch.
g.
Testing.
(4) Place BATTLE SHORT switch in ON posi-
tion. With an ohmmeter test for continuity (closed
(1) Gain access to rear of control cubicle
contacts) from center contacts to upper contacts.
panel ( 9 6 , f i g . 3 - 1 8 ) .
NOT E
(2) Tag all OPERATION switch (68) leads.
(3) Remove screws and lockwashers which
secure tagged leads to the OPERATION switch.
(4), Place OPERATION switch in PARALLEL
OPERATION position.
With an ohmmeter, test for
continuity (closed contacts) from center contacts to
upper contacts.
NOTE
Upper contacts are those closest
to the panel hinge,
(5) Place OPERATION switch in SINGLE UNIT
OPERATION position. Test for continuity (closed
contacts) from center contacts to lower contacts.
(6) If the OPERATION switch does not operate
correctly, replace it.
(7) Reconnect leads, as tagged, and remove
tags.
Upper contacts are those
closest to the panel hinge.
(5) Place BATTLE SHORT switch in OFF posi-
tion. Test for continuity (closed contacts) from
cent er contacts to lower contacts.
(6) If the BATTLE SHORT switch does not
operate correctly, replace it.
b.
Replacement.
Replace
defective
BATTLE
SH~RT switch (62) as follows
(1)
Removal.
(a) Tag BATTLE SHORT switch (62) leads
and remove screws and lockwashers which secure
leads to BATTLE SHORT switch.
(~) Remove BATTLE SHORT switch mount -
ing hardware and remove switch.
(g) Remove BATTLE SHORT switch cover.
b.
Replacement.
Replace defective OPERATION
(2)
Installation.
Install BATTLE SHORT switch
SWitC h 138~s-=w S:
(62) using removal steps in reverse order. Remove
tags .
(1)
Removal.
3 - 1 1 7 . C i r c u i t B r e a k e r S w i t c h .
(~) Tag OPERATION switch leads and re-
move screws and lockwashers which secure leads to
See ( 6 5 , f i g . 3 - 1 8 ) and proceed as follows:
OPERATION switch.
CAUTION
(~) Remove mounting hardware which secures
OPERATION switch (68) to panel (96) and remove
Open DC CONTROL CIRCUIT
OPERATION switch.
BREAKER ( 2 7 , f i g . 3 - 1 7 )
before testing or replacing
(2)
Installation.
Install OPERATION switch
CKT BRK switch.
(68) using removal steps in reverse order. Remove
tags.
3 - 1 1 6 .
B a t t l e
S h o r t
S w i t c h .
See ( 6 2 , f i g . 3 - 1 8 ) and proceed as follows
CAUTION
Open DC CONTROL CIRCUIT
BREAKER ( 2 7 , f i g . 3 - 1 7 ) be-
fore testing or replacing
BATTLE SHORT switch.
3 - 4 2
a,
Testing.
(1) Gain access to rear of control cubicle panel
( 9 6 ,
f i g .
3 - 1 8 ) .
(2) Check that spring return is in its center
position.
(3) Tag and remove all leads from CKT BRK
switch ( 6 5 , f i g . 3 - 1 8 ) .