Graco Therm-O-Flow 20 [48/108] Remove platen

Graco Therm-O-Flow 20 [48/108] Remove platen
Repair
Remove Remove
Remove
Platen Platen
Platen
1.Turnthemainpowerswitchoff.
2.Disconnecttheplatenpowerwiresandthe
groundwirefromwithinthemaincontrolpanel
andpulloutofconduit.
3.Removetheplatenassemblyfromtheram.
4.Reversethisproceduretoreinstallthenewor
rebuiltplatenassembly.
Replace Replace
Replace
Heater Heater
Heater
Bands Bands
Bands
and and
and
Pump Pump
Pump
RTD RTD
RTD
Replace Replace
Replace
Heater Heater
Heater
Band Band
Band
1.Ifthematerialdrumhasalreadybeenremoved
fromthesupplyunit,gotostep2.Ifyouneed
toremovethematerialdrum,performsteps1
through6oftheChangePail,page35.Pump
mustbeinthefulldownposition(airmotorshaft
fullyextended).
2.Makesuretheramplateisdownandtheram
handvalveisintheneutralposition.
3.FollowPressureReliefProcedure,page33.
4.Bleedoffexcessmaterialinthesystemby
openingtheapplicatorandcatchingthematerial
inawastecontainer.
5.OnADM,turnoffthesystemheat(D).
6.Turnthemainpowerswitchoff.
7.Removethepumpcovers.
8.Removewhiteceramiccapsanddisconnectthe
electricalwiresfromheaterband(309a,309b).
9.Removethescrewthatholdstheheaterband
inplace.
10.Removetheheaterband(309a,309b)from
pump.
11.Coattheinsideoftheheaterwithnonsilicone
heatsinkcompoundbeforemounting.Maximum
thicknessis0.005in.Coatonlytowithin3/4in.
ofverticalends.
12.Installanewheaterband(309a,309b)inthe
samelocationastheoldheaterband:
a.Locateheaterterminalssotheylineupwith
backofpump.
b.Tightentheheaterband.
c.Re-connectheaterwiresandre-attach
ceramiccapsthatinsulateterminal.
Figure29
Replace Replace
Replace
Pump Pump
Pump
RTD RTD
RTD
1.Turnthemainpowerswitchoff.
2.Removethescrewsthatholdthefrontshroudin
placeandremovefrontshroud.
3.Ifsensorwireisconnectedtoelectricalenclosure,
disconnectit.
4.Loosentheclamp(321)holdingsensoronpump.
5.Tietheleadsofthenewsensor(320)totheold
sensorandremovetheoldsensor.Theleadsof
thenewsensorwillbeeasilydrawnthroughthe
conduitforreconnecting.
6.Replacethesensor(320)inclamp(321):
a.Placesensorapproximately30°counter
clock-wisefrompumpoutlet.
b.Tightenclamp(321).
7.Re-connectsensorwiretoelectricalenclosure.
48334129D

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