THORLABS vytran PTR406 User Manual page 35

Fiber Recoaters with Linear Proof Testers
Prior to first use, the following steps must be followed to load the system with recoat material and purge all air from
lines.
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Prior to handling the UV acrylate material, be sure to read the Material Safety Data Sheet provided in
Chapter 14.2: Material Data Safety Sheet. Also review the MSDS provided with your chosen cleaning
1. Make sure to have lens tissue and cleaning solution (acetone or alcohol) available prior to proceeding.
2. Raise the Recoater top.
3. Position the selection lever to the Inject position (lever horizontal) and screw in (turn clockwise) the knurled
syringe screw until a slight resistance is felt at the end of travel. Do not use excessive force when turning
in the screw once the end of the travel range has been reached. This end of travel point is reached when
the leading edge of the syringe screw is approximately level with the step in the syringe body.
4. Fit a recoat bottle with fresh recoat material to the system. The red inject tube should be long enough to
just reach the bottom of the recoat bottle. If using a short (30 ml) recoat bottle, the read tube may need to
be trimmed to length.
5. Turn the selection lever to the Fill position (lever down). Unscrew (turn counterclockwise) the knurled
syringe screw to draw recoat material from the bottle into the syringe. Continue unscrewing the syringe
screw, approximately 3/4" or until it is felt to spin freely. Do not pull on the syringe screw once the end of
travel range has been reached; this will pull the plunger out from the syringe body.
6. Turn the selection lever to the Inject position (lever horizontal) and screw in (turn clockwise) the syringe
screw until the inject end of travel point is reached.
Note: If the syringe screw was fully unscrewed until it spun freely, a slight forward pressure may initially
be required to re-engage the threads.
7. Watch the injection port for signs of recoat material. Make sure to collect the recoat material as it comes
out of the mold injection port. Do not allow the recoat material to run down the face of the mold and under
the mold plate.
8. The above steps of filling and injecting the syringe must be repeated several times to fully displace are from
the system. Recoat material should run freely from the mold without bubbles. If bubbles are still present,
run additional fill-inject sequences. It may help to turn the recoat plunger back and forth several times during
the inject sequence in order to remove air trapped at the O-Ring seal. It is also sometimes helpful to fill the
syringe and then lift the left side of the unit such as to angle the syringe at an approximately 45° angle.
Rev A, September 14, 2020
Chapter 8: Priming the PTR406/PTR406B
Remote Manual Injector
Warning
solution.
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