User Guide

SECTION 15—P.C. BOARD
Perfecto
2
™
58 Part No 1148070
SECTION 15—P.C. BOARD
Replacing P.C. Board
 DANGER
Topreventelectricalshock,ALWAYSdisconnectconcentratorfromelectricaloutlet
beforeservicing.
CAUTION
Followthesepre‐cautionstopreventdamagetotheP. C . boards:
BeforehandlinganyP. C . boards,youneedtobeproperlygroundedtopreventstatic
damagetothecomponentsoftheboard.AStaticCuffMUSTbewornandproperly
groundedusinganalligatorclip.Electricalconduitorawaterpipeisnormallysufficient
whenaknowngoodgroundisnotavailable.Careshouldbetakentoensurethatthe
alligatorclipcontactswithbaremetalsurface.
Whenremovingquickdisconnectsterminals,DONOTpullonwireitselfasdamageto
theconnectionmayoccur.HolddowntheP. C . boardwithonehandanduseanupward
forcewithaslightrockingmotiontoremovetheterminals.
BeforeinstallinganyP. C . boards,ensurethatallinsulatorsareinplace.
NOTE:Forthisprocedure,refertoFIGURE 15.1onpage 60.
1. Unplugunit.
2. Removecabinet.RefertoRemovingCabinetonpage 23.
3. Removecontrolpanel.RefertoRemovingControlPanelonpage 53.
4. Dothefollowing:
A. DisconnectwiringharnessesfromPCboard.
 WARNING
DONOTremoveoxygensensortubingfromP. C.board.RemovefromregulatorONLY.
DONOTremovethepressuresensortubingfromP.C. board.Removefromtopof
producttankonly.Damagetooxygensensorassemblyorpressuresensorcouldoccur.A
faultysensormayresultinimproperoxygendeliveryandharmtotheuser.
B. Disconnectpressuresensortubingfromproducttank,notP.C . Board.
C. ForconcentratorsthathaveO2sensor,disconnecttheoxygensensortubingfrom
regulatorfitting.RefertoReplacingRegulator
onpage 48.
5. RemovethetwomountingscrewsontopcornersofP.C. board.
6. PositionnewP.C.board.