Specifications

Section-5 Maintenance
November 11, 2013
5‐4
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STEP 4 Wait30secondsformoduletocool.
STEP 5 Useascrewdriver(Phillips)toloosenandremovethescrewsthatholdthemodulein
therack.Thereisonescrewoneachsideofthemodule.
STEP 6 Pullthemodulehalfwayoutoftherack,thenrepositionhandstothesidesofthe
moduletobettersupporttheweight(22kg).Removethemodulefromtherack.
STEP 7 Endofprocedure.
Caution
DO NOT LET THE MODULE SWING DOWN WHEN PULLING THE MODULE
OUT OF THE RACK. THIS COULD CAUSE SEVERE DAMAGE TO THE
CONNECTORS ON THE BACK OF THE MODULE.
5.2.3 PAModuleInstallation
STEP 1 Inspecttheconnectorsontherearofthemoduletobesurethereisnodamageto
theliquidconnectorsortotheelectricalconnectors.
STEP 2 Inspecttheconnectorsinsidetheracktoconfirmthereisnoblockageandnodamage
totheliquidorelectricalconnectors.
STEP 3 ChecktobesurethatthePAmodulecircuitbreakerhasbeenturnedoff.
STEP 4 SlidethePAmodulegentlyintotherackuntilcontactismadewiththemating
connectors.
STEP 5 Pushevenlyonthefrontoffrontofthemodulewithaslightsidetosidemotionto
helpalignthematingconnectors.
STEP 6 Usefirm,moderatepressuretofullyseatthemodule.
Ifthemodulefailstoseatwithmoderatepressuredonotforcethemoduleintotherack.Removethemoduleand
inspectforinterference.
Note
In some cases it has been noted that it can be difficult to reinsert a hot PA module. If the connection is dif-
ficult (module doesn’t seat fully with moderate pressure) simply allow the module to cool sufficiently
before reinserting.
CheckthecoolantconnectorsonthebackofthePAmoduleand onthecoolantmanifold.Themanifoldconnector
hasanO‐ringseal(Figure5‐2)whichmustbeingoodconditiontopreventleaks.Ifthereisevidenceofamechanical
interferenceormisalignmentofthecoolantconnectorsonallthemodulesthenarackre‐alignmentmaybe
required.Thismayalsoberequiredifamanifoldisreplaced.Therackrealignmenthelpsalignthecoolant
connectorsinthemanifoldwiththecoolantconnectorsonthePAmodules.Ifrackalignment
isneededreferto5.2.5
onpage5‐5.
Figure 5-2 Manifold Coolant Connector O-ring
STEP 7 Installtheholddownscrewsandhandtighten.
STEP 8 Turnonthemodulecircuitbreaker.
STEP 9 PressthetransmitterONbuttontoreactivateallmodulesthatareoff.
STEP 10 Endofprocedure.
O-ring