PS Magazine - TB 43-PS-663
PS, The Preventative Maintenance Monthly
ISSUE 663
FEBRUARY 2008
59
8B#996
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HE CONTINUITY CHECK IN THE -)#,)#bS 4- ?;1:=<;21<;1:
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0 DOES A GREAT sOB TELLING YOU
WHEN YOU HAVE A SHORT IN THE ELECTRICAL SYSTEM[ "UT IT ISNbT VERY SPECIuC ABOUT WHERE THE
SHORT IS[
(EREbS A tUICK WAY TO uND WHAT E]ACTLY IS WRONGQ
#!5ZJ1X = ZHE -J#/J# SHOULD NOT \E LOADED DURING THIS TEST<
4EST THE -<1 BLASTING CAP SET TO MAKE SURE ITbS
WORKING[ 3EE THE ;1:
J
0 JOR THE TEST PROCEDURE[
-AKE A SHUNT WIRE JROM A TWO;IN PIECE OJ
COMMO WIRE[ (OOK THE -<1 BLASTING CAP TEST SET
TO THE CONTROL BO] USING THE TWO;WIRE PIGTAILED
CABLE[ #ONNECT THE SHUNT TO THE CONTROL BO]bS *2
CONNECTOR ! AND " HOLES TO TEST >F#a%4 AND TO
THE " AND # HOLES JOR THE #(!>'% TEST[
#YCLE THE -<1[ )J THE -<1 LIGHTS UP JOR BOTH
TESTS. THE CONTROL BO] IS GOOD[
^E]T CONNECT THE X: CABLE TO THE CONTROL BO][
$O THE ABOVE TEST JOR
THE X:bS ! AND " AND " AND # HOLES[
3ET THE CONTROL BO] SELECTOR TO >F#a%4 JOR THE !;" CHECK
AND TO #(!>'% JOR THE ";# CHECK[
)J THE X: IS GOOD. CONNECT THE X< CABLE TO THE X: CABLE
AND DO THE SAME CHECKS[
)J THE X<bS Fa. PLUG THE OPEN END INTO THE SAJETY BO][
,OWER THE LAUNCH RAIL AND DO THE ABOVE !;" AND ";# TEST ON
THE SAJETY BO] CABLE[
4HE -<1 SHOULD ^F4 LIGHT UP ON EITHER TEST[ >AISE THE
,!9^#( RAIL AND DO THE ABOVE TESTS AGAIN[ ^OW THE -<1
SHOULD LIGHT UP[ ,OWER THE RAIL AND PLUG THE SAJETY BO] CABLE
INTO THE TUBbS CHARGE BO] AND DO THE NORMAL CONTINUITY
TEST[ )J AT ANY POINT A BO] OR CABLE wUNKS THE TEST. YOU KNOW
IMMEDIATELY WHAT MUST BE REPLACED[ XHEN YOUbRE uNISHED
TESTING. RETURN THE CONTROL BO] SELECTOR SWITCH TO 3!&%[
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