mounted dome down, condensation may occur in the conduit system. Use properly rated conduit
seals/drainstopreventmoisturefromenteringthexture.Threadthextureontothe3/4"pipe
and secure with the set screw.
Thedomeguard(Part#K8449090)maybeusedasanaccessory.Itismountedonthe154XST
usingthetwosupplied#8-32screws.Adjustthetensiononthescrewsuntilthedomeguardis
squarewiththehousing.
C. Electrical Connections.
WARNING
This is a four-wire device, and when installed, all four wires must be terminated. Failure to terminate
bothredandbothblackwireswillresultinashockorrehazard.
The 154XST unit is provided with four leads; two red, and two black. To achieve electrical
supervision, connect one red (+) lead to the positive side of the incoming power source and the
other red (+) lead to the outgoing power source. Likewise, connect one black (–) lead to the
negative side of the incoming power source, and the other black (–) lead to the negative side of
the outgoing power source.
Ifrequired,thegreenscrewinthehousingisprovidedforconnectiontoanearthground(see
gure1).Togainaccesstothescrew,thepowersupplyassemblycanberemoved.Globe
removalisdescribedinparagraphIII.A.1.
NOTE
This unit is polarity sensitive, and may be damaged by incorrect electrical hookup. Polarity must be
observedforproperoperation.Inaddition,damagewillresultifthevoltageratingisexceeded.
III. MAINTENANCE.
WARNING
Topreventignitionofhazardousatmospheres,disconnectthexturefromthesupplycircuit
before opening. Keep tightly closed when in operation.
SAFETY MESSAGE TO MAINTENANCE PERSONNEL
Listed below are some important safety instructions and precautions you should follow:
• Readandunderstandallinstructionsbeforeoperatingthissystem.
• Anymaintenancetothelightsystemmustbedonewiththepowerturnedoff.
• Anymaintenancetothelightsystemmustbeperformedbyatrainedelectricianinaccordancewith
NEC Guidelines and local codes.
• Neveraltertheunitinanymanner.Safetyinhazardouslocationsmaybeendangeredifadditional
openingsorotheralterationsaremadeinunitsspecicallydesignedforuseintheselocations.
• Thenameplate,whichmaycontaincautionaryorotherinformationofimportancetomaintenance
personnel,shouldnotbeobscuredifexteriorofhousingsusedinhazardouslocationsarepainted.
• Brokenglobescanleadtoexplosionswhichcouldresultinseriousinjuryordeath.Iftheglobeis
damaged in any way, the complete globe assembly MUST be replaced.
• Theonlyelectricalcomponentstobereplacedbythecustomeraretheashtubeandthecircuit
board assembly.
A. Flash Tube Replacement.
Asstrobelightsareused,theashtubesbegintodarken,causingthelightoutputtodecrease.
Thisdarkeningischaracteristicofashtubes.Darkeningwillbeginnearthebaseofthetube
andprogressupward.Also,asashtubesage,theymayhaveatendencytomisre(notre
periodically).
Afterextendedoperation,occasionallycheckforashtubedegradation.Shouldtheashtube
misre,haveanoticeabledecreaseinlightoutput,glowcontinuouslyordarkentoapoint
beyondthatshowningure2,itshouldbereplaced.
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