THORLABS PTR306, User Manual

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PTR306 / PTR306B Recoaters with Linear Proof Testers Chapter 6: Controlling the PTR306/PTR306B
Rev D, October 2, 2020 Page 15
Remote Manual Injection System (PTR306B)
The PTR306B includes the remote manual recoat injector which is fitted to the right side of the unit. This option
provides a method of manually dispensing recoat material directly from the recoat bottle into the injection port. This
system consists of a syringe with a knurled dispensing screw, which is fitted to a distribution valve with a two-
position selection lever. The lever can be positioned downward (toward the recoat bottle) to draw up material from
the recoat bottle, or horizontally (toward the syringe) to inject material into the mold. The knurled syringe screw is
unscrewed (turned counter-clockwise) to fill the syringe, and screwed in (turned clockwise) to inject material. The
selection lever must always be in the correct position for the desired operation (see table below).
Operation Lever Position Turn Syringe Screw
Fill Syringe with Recoat Material Down (Towards Recoat Bottle) Counter-Clockwise (Unscrew)
Inject Recoat Material into Mold Horizontal (Toward Syringe) Clockwise (Screw In)
Figure 9 Remote Manual Injector
Prior to first use, the following steps must be followed to load the system with recoat material and purge all air from
lines.
WARNING
Prior to handling the UV acrylate material, be sure to read the Material Safety Data Sheet provided in
Section 10.2. Also review the MSDS provided with your chosen cleaning solution.
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 counter-clockwise) 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.
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