Graco Therm-O-Flow 200, Instructions-Parts List Manual, Page: 49 / 109

Repair
Remove Remove Remove Platen Platen Platen
1. Turn the main power switch off.
2. Disconnect the platen power wires and the
ground wire from within the main control panel
and pull out of conduit.
3. Remove the platen assembly from the ram.
4. Reverse this procedure to reinstall the new or
rebuilt platen assembly.
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. If the material drum has already been removed
from the supply unit, go to step 2. If you need
to remove the material drum, perform steps 1
through 6 of the
Change Drums, page 36 . Pump
must be in the full down position (air motor shaft
fully extended).
2. Make sure the ram plate is down and the ram
hand valve is in the neutral position.
3. Follow Pressure Relief Procedure, page 34 .
4. Bleed off excess material and pressure in the
system by opening the applicator and catching
the material in a waste container.
5. On ADM, turn off the system heat (D).
6. Turn the main power switch off.
7. Remove the screws and covers.
8. Remove white ceramic caps and disconnect the
electrical wires from heater band (309).
9. Remove the screw that holds the heater band
in place.
10. Remove the heater band (309a, 309b) from
pump.
11. Coat the inside of the heater with non silicone
heat sink compound before mounting. Maximum
thickness is 0.005 in. Coat only to within 3/4 in.
of vertical ends.
12. Install a new heater band (309a, 309b) in the
same location as the old heater band:
a. Locate heater terminals so they line up with
back of pump.
b. Tighten the heater band.
c. Re-connect heater wires and re-attach
ceramic caps that insulate terminal.
Figure 29
334130D 49