Remove Platen; Replace Heater Band And Pump Rtd - Graco Therm-O-Flow 200 Instructions - Parts Manual

Repair

Remove 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 Heater Band and Pump
RTD
Replace Heater 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 the Pressure Relief Procedure, page 34.
4. Bleed off excess material and pressure in the sys-
tem 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.
50
8. Remove the screws and covers.
9. Remove white ceramic caps and disconnect the
electrical wires from the heater band (309).
10. Remove the screw that holds the heater band in
place.
11. Remove the heater band (309a, 309b) from the
pump.
12. Coat the inside of the heater with non silicone heat
sink compound before mounting. Maximum thick-
ness is 0.005 in. Coat only to within 3/4 in. of vertical
ends.
13. 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 the
back of the pump.
b. Tighten the heater band.
c. Re-connect the heater wires and re-attach the
ceramic caps that insulate the terminal.
320
321
F . 29
IG
309a
309b
ti25222a
334130L