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:CAUTIONOpen DC CONTROL CIRCUITBREAKER ( 2 7 , f i g . 3 - 1 7 )before testing or replacingOPERATION 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 SHORTswitch (62).(3)Remove screwsand lockwashers which sec-ure tagged leads to BATTLE SHORTswitch.g. Testing.(4) Place BATTLE SHORTswitch in ONposi-tion. With an ohmmetertest for continuity(closed(1) Gain access to rear of control cubiclecontacts) 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 screwsand lockwashers whichsecure tagged leads to the OPERATION switch.(4), Place OPERATION switch in PARALLELOPERATION position.With an ohmmeter, testforcontinuity(closed contacts) from center contacts toupper contacts.NOTEUpper contacts are those closestto the panel hinge,(5) Place OPERATION switch in SINGLE UNITOPERATION position. Test forcontinuity (closedcontacts) from center contacts to lower contacts.(6)If the OPERATION switch doesnot operatecorrectly, replace it.(7)Reconnect leads, as tagged, andremovetags.Upper contacts are thoseclosest to the panel hinge.(5)Place BATTLE SHORTswitch in OFFposi-tion. Test for continuity (closed contacts) fromcent er contacts to lower contacts.(6) If the BATTLE SHORTswitch does notoperate correctly, replace it.b. Replacement. Replace defective BATTLESH~RT switch (62)as follows(1) Removal.(a)Tag BATTLE SHORT switch (62)leadsand remov–e screws and lockwashers which secureleads to BATTLE SHORT switch.(~) Remove BATTLE SHORT switch mount -ing hardware and remove switch.(g)Remove BATTLE SHORTswitch cover.b. Replacement.Replace defective OPERATION(2)Installation.Install BATTLE SHORTswitchSWitC h 138~s-=w S:(62) using removal steps in reverse order. Removetags .(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 screwsand lockwashers which secure leads toSee ( 6 5 , f i g . 3 - 1 8 ) and proceed as follows:OPERATION switch.CAUTION(~) Remove mounting hardware which securesOPERATION switch (68)to panel (96)and removeOpen DC CONTROL CIRCUITOPERATION switch.BREAKER ( 2 7 , f i g . 3 - 1 7 )before testing or replacing(2) Installation.Install OPERATION switchCKTBRKswitch.(68) using removal steps in reverse order. Removetags.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 followsCAUTIONOpen DC CONTROL CIRCUITBREAKER ( 2 7 , f i g . 3 - 1 7 ) be-fore testing or replacingBATTLE SHORTswitch.3 - 4 2a, 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 centerposition.(3) Tag and remove all leads from CKTBRKswitch ( 6 5 , f i g . 3 - 1 8 ) .
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