Emerson Rosemount 700XA Reference Manual page 128

Operation and maintenance
June 2022
Figure 5-17: Igniter side view
A. Fitting
B. Screws and washers
C. Bulkhead nut
D. Black plastic edge
E. Igniter/thermocouple assembly
F. Port A
G. Port H
H. Port S
Procedure
1. Loosen the bulkhead nut.
2. Detach the igniter connector.
3. Remove the screws and washers from the plastic bracket.
4. Rotate the micro flame photometric detector (µFPD) burner around the bulkhead
5. Loosen the nut; then slide the igniter/thermocouple assembly and ferrule (not
6. Slide the bulkhead nut and a new ferrule on the new igniter/thermocouple
7. Align the black plastic edge of the igniter with the end of the nut and gradually
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nut until there is enough room to remove the igniter/thermocouple assembly.
shown here) out of the µFPD burner through the fitting.
assembly. Then slide the µFPD burner through the fitting.
tighten the nut to the fitting. Keep pushing the igniter toward the burner while
tightening the nut. The back edge has to be flush with the end of nut when secured.
Tighten the nut to 4 in.-lb.
Do not overtighten the nut.
Reference Manual
2-3-9000-744
Emerson.com/Rosemount