Figure 11-16: Pmt Assembly - Exploded View - Teledyne t100 Operation Manual

Troubleshooting & Service
256

Figure 11-16: PMT Assembly - Exploded View

To replace the PMT, the HVPS or the TEC:
1. Remove the sensor module as described in Section 11.7.2.1.
2. Remove the entire sensor module assembly from the.
3. Remove the reaction cell assembly.
4. Remove the two connectors on the PMT housing end plate facing towards the front
panel.
5. Remove the end plate itself (4 screws with plastic washers).
6. Remove the desiccant bags inside the PMT housing.
7. Along with the plate, slide out the OPTIC TEST LED and the thermistor that
measures the PMT temperature.
•
Both may be coated with a white, thermal conducting paste. Do not contaminate
the inside of the housing or the PMT tube with this grease.
8. Unscrew the PMT assembly. It is held to the cold block by two plastic screws.
•
Because the threads of the plastic screws are easily damaged it is highly
recommended to use new screws when reassembling the unit.
9. Carefully take out the assembly consisting of the HVPS, the gasket and the PMT.
Teledyne API - T100 UV Fluorescence SO Analyzer
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