Maintenance
332511B
15
Maintenance
Platen Maintenance
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 rais
ing 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 Repair-Parts manual.
4. Clear air assist tube in platen. Clean all parts of
valve and reassemble. Refer to Supply Systems
Repair-Parts manual.
5. Remove bleed stick from platen. Push bleed stick
through bleed relieve port (P) to remove material
residue. See F
6. Remove platen covers. See F
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 F
8. Inspect platen heater blocks (B) or heater (H) for
burn or melt spots. Replace platen heater if neces
sary. See F
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
in-lbs (6.8 +/- 1.1 N•m) for 55 gallon platen.
Remove and Reinstall Platen Wipers
Refer to
Supply Units Repair-Parts
manual for instruc
tions.
F
IG
. 3: Remove Platen Covers and Heaters
F
Bleed
Stick
C
H
B
P
