Maintenance
Maintenance
Platen Maintenance
Remove and Reinstall Platen Wipers
Refer to Supply Units
If the platen does not come out of the pail easily when the pump is being raised, the air assist tube or check valve may be plugged. A plugged valve prevents air from reaching the underside of the plate to assist in raising it from the pail.
1.Turn off main disconnect at the machine.
2.Allow equipment to cool.
3.Relieve pressure and disassemble air assist valve. Refer to Supply Systems
4.Clear air assist tube in platen. Clean all parts of valve and reassemble. Refer to Supply Systems
5.Remove bleed stick from platen. Push bleed stick through bleed relieve port (P) to remove material residue. See FIG. 3.
6.Remove platen covers. See FIG. 3.
a.Remove platen cover fasteners (F).
b.Remove both platen covers (C) and ground wire from platen.
7.Remove any excess fluid. Use a soft wire brush on heater coils (H). See FIG. 3.
8.Inspect platen heater blocks (B) or heater (H) for burn or melt spots. Replace platen heater if neces- sary. See FIG. 3.
9.Check for loose connections and damaged wires.
10.Follow steps in reverse order to reassemble platen.
NOTE: Torque platen cover fasteners (F) to 60 +/- 10
| F |
| C |
Bleed | B |
| |
Stick | H |
|
P
FIG. 3: Remove Platen Covers and Heaters
332511A | 15 |
