Troubleshooting and Service
Teledyne API – Model T108 Addendum to T100 Manual
18
07268C DCN8258
2.5 THERMOCOUPLE REPLACEMENT
Continuous operation at 1000 ºC will eventually degrade the performance of the thermocouple used to
sense the temperature of the quartz oven. The following instructions describe how to install a new
thermocouple into the Converter Heater Block. This is a replacement thermocouple (KIT000255). The
following instructions provide the necessary information to remove the existing thermocouple and replace
it with the new one supplied in Kit 255.
You will need the following tools:
•
Nutdriver,
5
/
16
•
Nutdriver,
11
/
32
•
Diagonal Cutter
•
Philips head Screwdriver #2
You will need to obtain the following replacement parts kit from TAPI:
•
KIT000255 (AKIT, Retrofit, 501TS, TC Type S RPLCMN)
Once you have the right tools and parts, replace the thermocouple as follows:
1. Ensure power is removed from the 501TS Converter. If the Converter has been operational you will
need to wait for 2 hours for the Converter oven to cool before continuing with the replacement of
the thermocouple.
2. Remove the cover from the Converter chassis.
3. Unscrew the (4) nuts that secure the front panel to the chassis. They are located just behind the
Front Panel along the top.
4. Lower the Front Panel to gain easier access to the end of the quartz tube.
5. Unscrew the (3) nuts that secure the inner cover protecting the Heater Block and quartz tube.
Remove this cover.
6. Cut the tie-wrap that secures the thermocouple to the fitting at the end of the quartz tube.
7. Loosen the Teflon fitting at the end of the quartz tube taking care not to put any stress on the tube,
and slide the fitting off the tube.
8. Remove the thermocouple.
9. Disconnect the thermocouple wires from the Temperature Controller.
Figure 2-2. Thermocouple
Summary of Contents for T108 Series
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Page 26: ...Appendix A Model 501 Interconnects 07268C DCN8258...
