Vytran PTR-200-PRL, Operator'S Manual

Page: 84 / 267

Maintenance
Vytran LLC: PTR-200-PRL Polyimide Recoater Operator’s Manual Version 1.2 26
5.10 Replacing the Die
If the die are sufficiently damage such that a quality recoat cannot be performed, then replacement is
required. The top and bottom die are a matched set and are replaced as a pair. The top die are spring
loaded which enables a slight pivoting during closure, while the bottom die are fixed mounted to the head.
To replace the top die:
1. Remove any fiber from the unit, clean the die, and shut the unit down. This will relieve the air
pressure to the die open/close cylinder.
2. Manually open the die set to be replaced. The top die pivots about a center pin which is pressure
loaded with two (2) small springs. Remove and retain the top die retainer clip for reuse. This will
expose the springs. Using the die, gently compress the springs. This will allow a rotation of the
die by ~45 degrees and a removal of the die from the clamp. Remove and retain the springs for
reuse.
3. Locate and clean the new top die to be installed.
4. Insert the two (2) springs into the clamp. With the die rotated ~45 degrees, gently collapse the
springs with the die. Align the die pin with the clamp and rotate the die to 0 degrees to install.
5. Reinstall the die retainer clip.
To replace the bottom left die (no inject port):
1. Remove any fiber from the unit, clean the die, and shut the unit down. This will relieve the air
pressure to the die open/close cylinder.
2. Manually open the die set to be replaced. Remove and retain the two (2) 5/64” hex socket head
cap screws that secure the die to the head. Remove the die from the head.
3. Locate and clean the new top die to be installed.
4. Seat the new die into the head and insert the two (2) 5/64” hex socket head cap screws. Gently
tighten the screws.
To replace the bottom right die (with inject port):
1. Remove any fiber from the unit, clean the die, and shut the unit down. This will relieve the air
pressure to the die open/close cylinder.
2. Manually open the die set to be replaced. Remove and retain the two (2) 5/64” hex socket head
cap screws that secure the die to the head. Gently begin to remove the die from the head. An
inject tube will be attached to the die. This tube will limit the distance the die can be removed
from the head. Gently pull the die with the inject tube until resistance is felt
3. Locate and clean the new top die to be installed.
4. To release the old die from the inject tube, gently rotate the die while holding the inject tube. To
install the new die onto the inject tube, gently rotate the die onto the inject tube while holding the
inject tube. Slowly feed the inject tube into the head. Seat the die into the head and insert the
two (2) 5/64” hex socket head cap screws. Gently tighten the screws.