Adjusting The Coating Height - Ultra Optics Mini2 Operation And Maintenance Manual

2. Apply a 1/8 inch piece of reflective tape to the top of the suction cup as a vertical strip.
a. This reflective tape is supplied with the tachometer if acquired from Ultra Optics.
3. Disconnect one of the leads of the coating pump.
a. This allows running the coating prime operation without actually running the
pump.
4. With the power to the machine still on, disconnect the compressed air line to the
machine.
5. Flip the prime switch down to WASH PUMP PRIME position.
a. The spindle will drop down and start to spin.
6. Press the white button on the handheld tachometer.
a. This will allow the tachometer to reset to zero.
7. While holding down the white button, point the tachometer towards the silver reflective
tape. Wait until you see a bullseye icon in the corner of the display.
8. If the speed is not correct, turn the WASH potentiometer.
a. Potentiometer is located on the left side, under the control panel
b. Turn clockwise to increase speed and counter-clockwise to decrease speed.
9. When the wash/coat spin-off speed is properly adjusted, re-connect the compressed air
line to the machine.
10. Place the prime switch in the upper COATING PUMP PRIME position.
11. Flip the switch up to the CHUCK position.
12. Place a lens, front side up, centered on the suction cup.
13. Press the green CYCLE START button.
a. The spindle will swing over to the coating side and spin above the bowl.
14. While holding down the white button, point the tachometer towards the silver reflective
tape. Wait until you see a bullseye icon in the corner of the display.
15. If the speed is not correct, turn the COAT or PLUS potentiometer.
a. Potentiometer is located on the left side, under the control panel
b. Turn clockwise to increase speed and counter-clockwise to decrease speed.
16. When the coat speed is properly adjusted, press the red CYCLE STOP button.
17. Reconnect the coating pump wires that were removed in step 3
18. Replace the silver control panel and tighten using the thumb screws.

Adjusting the coating height

1. Obtain access to the adjustment potentiometer by
removing the control panel assembly.
2. Turn the coating pump on by putting the prime switch
up to the COATING PRIME position.
3. Adjust the height of the coating discharge to be at the
top of the coating bowl by turning the "Coating pump"
potentiometer. The potentiometer, shown in Figure 6, can
be found by opening the front service panel and looking on
the right side wall. Make sure the height is neither too low
nor too high.
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Figure 6 - Coating height
adjusting potentiometer
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