Specifications

748414-A
August 1999
38
Heated Flame Ionization Detector Analyzer Module
Rosemount Analytical NGA 2000
4
MAINTENANCE AND TROUBLESHOOTING
Sample RTD
657061
Cartridge Heater
659643
Thermostat
657065
4.2.4 T
HERMAL
B
LOCK
The sample RTD can be replaced with the thermal block attached to burner and mounted in
oven. The cartridge heater and thermostat are also replaceable with thermal block secured
to burner, but must be removed from the oven.
4.2.4.1 S
AMPLE
RTD
1. Refer to Figure 4-4A. Remove the four screws securing the oven cover, remove cover.
2. Disconnect the sample RTD wiring connector, note location.
3. Refer to Figure 4-9. Remove the two screws securing the sample RTD, pull sample
RTD out.
4. Install replacement sample RTD, secure with screws.
5. Attach sample RTD wiring connector.
6. Re-attach oven cover.
F
IGURE
4-9. T
HERMAL
B
LOCK
– S
AMPLE
RTD, C
ARTRIDGE
H
EATER AND
T
HERMOSTAT