Filter Wheel - Thermo Scientific GENESYS 20 Service Manual

9.3.6.1

Filter Wheel

Figure 9.11 - Filter and Lens Assembly
REMOVAL
1. Remove the filter and lens assembly from the base assembly (refer to
"Section 9.3.6 - Filter Wheel Assembly").
2. Remove the retaining ring securing the filter wheel and discard. This
retaining ring will not be reused.
3. Remove the Teflon washer and filter wheel, and clean the Teflon
washer.
REPLACEMENT
4. Replace the filter wheel on its mounting pin with the hub down making
sure the gear teeth of the filter wheel mesh properly with the gear teeth
of the motor pinion. (The filter wheel can only be positioned one way
on the lug.)
5. Place the Teflon washer on the mounting pin above the filter washer.
NEVER REUSE A RETAINING RING ONCE IT HAS BEEN REMOVED.
EVEN THOUGH IT MAY APPEAR GOOD, THE STRETCHING OF
THE RING REQUIRED TO REMOVE THE RING INTRODUCES
STRESSES WHICH WILL CAUSE THE RING TO FAIL.
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Dissassembly and Replacement
CAUTION