User's Manual

ControlBoardReplacement Kits 24U934, 24U936, 24U935, 24U937
1.Todisconnectthecontrolboardunplugthe
positionsensor,encoder,temperaturesensor,
andmotorfromthecontrolboard.
2.Removewiresfromclipinsidehousing.
3.Removeanytiestrapsthatmaybepresent.
4.Settheelectronicscover/controlboardaside.
Foradvancedmodelssee
DisconnectPowerBarrierBoard,page35.
Install Install
Install
New New
New
Control Control
Control
Board Board
Board
1.Plugthepositionsensor,encoder,temperature
sensor,andmotorintothenewcontrolboard.
2.Secureloosewiresintotheclipinsidethe
housing.
Foradvancedmodelssee
InstallNewPowerBarrierBoard,page35.
Reset Reset
Reset
Dip Dip
Dip
Switch Switch
Switch
Tocalibratetheunitadipswitchonthecontrolboard
mustbetoggled.Therearetwodipswitcheslocated
ontheuppercontrolboard.Reseteitherdipswitch
bytogglingittotheoppositestate.Thissignals
thecontrolboardthatareplacementparthasbeen
installed.Thenexttimetheunitispowereditwill
proceedwithanauto-calibrationsequence.
NOTE: NOTE:
NOTE:
Ifyouareperformingmorethanonerepair
procedurethedipswitchonlyneedstobetoggled
intotheoppositestateonetime.
Figure18DipSwitch
Reinstall Reinstall
Reinstall
Electronics Electronics
Electronics
Cover Cover
Cover
Besurethatnowiresarepinchedbetweenthe
electronicscoverandthemotorhousing.Pinched
wiresmaydamagethecontrolboardandwillimpair
explosion-proofsafety.
1.Reinstallelectronicscoverontocenterhousing.
2.Installthe12boltsusinga6mmhexwrench.
NOTE: NOTE:
NOTE:
Ensurethelockwashersarestillinplace.
3.Torquetheboltsto15ft-lb(20Nm).
Reinstall Reinstall
Reinstall
Wiring Wiring
Wiring
Box Box
Box
Cover Cover
Cover
1.Connectwiresfrominsideofwiringbox.Referto
torqueinstructionslistedonplacardinsideofthe
wiringbox.Connectpowercableand/orconduit
totheelectronicscover.
2.Reinstallcoverontowiringbox.
3.Installthe4boltsusinga6mmhexwrench.
NOTE: NOTE:
NOTE:
Ensurethelockwashersarestillinplace.
4.Torquetheboltsto15ft-lb(20Nm).
Power Power
Power
Unit Unit
Unit
1.Applypowertotheunittostarttheauto-calibration
process.
2.Themotoroutputshaftwillrunupanddownover
thecourseofseveralminutes.
3.Midwaythroughtheauto-calibrationprocessthe
motoroutputshaftwillpauseasitmovestothe
nextstep.
4.Ensuretheauto-calibrationprocessiscomplete
beforecontinuing.
Reattach Reattach
Reattach
Pump Pump
Pump
Lower Lower
Lower
1.Jogtheoutputshaftonthepumplowerand
reconnectthecouplingnut.
2.Torquetotheproperlevelpertheappropriate
pumpmanual.
28 3A2526F