Vytran PTR-200-PRL, Operator'S Manual

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Maintenance
Vytran LLC: PTR-200-PRL Polyimide Recoater Operator’s Manual Version 1.2 25
5.7 Replacing Recoat Material
Recoat material has a finite shelf life and should be replaced every 1 month. To replace the recoat
material, first flush the system as outlined in Flush Recoat System (above). Once the system is flushed,
fill a clean recoat bottle ¾ full with fresh recoat material and follow the procedures in Purge Recoat
System (above).
Note: The one-ounce internal recoat bottle holds approximately 30,000 micro-liters when full. The
number of recoats per fill and the approximate time before the material needs to be refilled can be
determined based on the volume of material per recoat and the number of recoats per month. For most
applications the material will need to be replaced before it runs out. Even if fresh material is added to the
internal bottle prior to the Planed Maintenance schedule, the material should still be replaced since mixing
of the old and new materials occurs.
5.8 Replacing a Heater
If a heater is sufficiently damaged such that a quality recoat cannot be performed, then replacement is
required. The left and right heaters are identical and DO NOT need to be replaced as a pair. The
heaters are comprised of a body which houses a graphite filament. When installed in the PTR-200-PRL,
the heater is held in place by electrical contacts at the base of the heater body. This is a pin/socket
contact compression fit.
To remove the heater:
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 sets. This will allow additional access to the heaters.
3. Grab the body of the filament and using a front to back rocking motion, gently lift the filament
body (pins) out of the contacts.
To install the heater:
1. Inspect the new heater for any deformation of the filament. If deformation is noted do not install
nor use the heater.
2. Hold the filament body (not the graphite filament) and locate the pins into the electrical sockets.
3. To fully seat the heater, gently push down on the electrical contacts (located on the top of the
heater).
5.9 Changing the Fiber Holding Block V-Grooves
To change a FHB V-groove insert:
1. Loosen the two (2) set screws accessible from the front of the FHB base using the 0.035” Allen
key included in the LDC-200 tool kit. Do NOT remove the set screws completely; one full turn
counter-clockwise should be sufficient to release the insert.
2. Remove the FHB V-groove and replace with the desired size. For dual sided inserts, the label for
the desired size should face right side up and be readable. Make sure the vacuum feed ports are
clear of debris by holding the insert up to a light and checking from behind to make sure light
passes each of the ports. Clean if necessary.
3. Make sure the new insert is fully seated and flush with the inside face of the FHB.
Note: The inside face of the FHB is the side closest to the head.
4. Re-tighten the set screws until they are snug. Do NOT over tighten.