Chapter 7
Maintenance and Repair Notes
DM55 DynaDrum PP V6, Manual No.21-18, Rev.2.19 Page 125
Replace Encapsulated O-ring Seal and Spacer
1. With the platen at operating
temperature and in the full Up
position, shut down the unit and
lock out/ tag out both electrical
and pneumatic supply.
2. Using a safety knife, cut off and
remove the old O-ring seal.
3. Remove the four M16 bolts in the
center bolt pattern of the bottom
of the platen face.
4. Remove four of the six M16 bolts
in the outer bolt pattern of the
bottom of the platen face, leaving
one bolt on the left and one on
the right side.
5. Unlock, power up and slowly, in
manual mode, lower the platen
assembly onto a set of sturdy
wooden blocks positioned to
provide access to the remaining
two bolts.
6. With the platen resting securely
on the blocks, shut down the unit
and lock out/ tag out both
electrical and pneumatic supply.
7. Remove the remaining two bolts
holding the platen face to the
platen core.
8. Unlock, power up and slowly, in manual mode, raise the platen assembly making sure
the RTD sensor is removed from the platen face and the wiring is not pulled. Do not
move the platen face on the blocks, to assure it remains in proper position for the re-
install. Raise the platen core to the full Up position and out of the way. Shut down the
unit and lock out/ tag out both electrical and pneumatic supply.
9. Clean all surfaces free of adhesive build-up and debris on both platen face surfaces
and seal surfaces. Inspect and clean the pump outlet connector (PN 114309) and
RTD O-ring (PN N01011).
10. Re-apply a thin layer of thermal paste (PN 001V062) to the contact surface of the
platen core to ensure proper thermal transfer.
11. Re-install seal spacer in the same direction as removed (with angle facing up) and
new O-ring seal. Fitment will be tight and may require allowing the seal and spacer
to heat soak on top of the hot platen face for several minutes before attempting to
install.
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