GE CGA 351, Руководство пользователя

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December 2004
5-20 Service and Maintenance
Replacing the Sensor
Furnace (cont.)
3.
Make sure the internal power leads are fed all the way through the
ceramic block, in order to make a good connection, and that they
exit on the opposite side from which they were inserted. Tighten
all four (4) terminal screws on the ceramic block.
4.
Using a digital multimeter, check the resistance of the sensor
furnace heating element. Specific instructions may be found on
page 5-5.
5.
Reinstall the thermocouple and the oxygen sensor/manifold
assembly into the sensor enclosure, as described on page 5-16
(starting with step 3).
6.
Close the cover on the sensor enclosure.
7.
Reconnect the main power to the unit and recalibrate the oxygen
sensor (see
Calibrating the Model CGA 351 on page 4-31).
This completes the replacement of the sensor furnace.
The Electronics Enclosure
Those components associated with the electronic conditioning of the
signals generated by the oxygen measurement components are
located in the electronics enclosure. This section describes the proper
procedures for replacing these parts.
The user-serviceable parts located in the electronics enclosure (see
Figure 2-2 on page 2-10) include the following:
•
main power fuse
•
digital panel meter
•
controller card
•
option card(s)
Proceed directly to the appropriate section to replace any of the above
components.
Note:
For information regarding component locations and/or wiring
connections in an optional enclosure, see Appendix C.
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