Emerson Rosemount 700XA Reference Manual page 91

July 2020
Figure 55: 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 (B) from the plastic bracket.
4. Rotate the micro flame photometric detector (µFPD) burner around the bulkhead nut
room to remove the igniter/thermocouple assembly.
5. Loosen the nut (Figure
burner through the fitting.
6. Slide the bulkhead nut
burner through the fitting
7. Align the black plastic edge of the igniter
(Figure 54, D) to the fitting
D). The back edge has to be flush with the end of nut
Do not overtighten the nut
8. Rotate the µFPD burner back to its original position. Finger tighten the screws and washers (B).
9. Tighten the bulkhead nut
10. Secure the screws and washers (B).
11. Reconnect the ignitor connector
Rosemount 700XA
(Figure 54, A).
(Figure 54, F).
54, D); then slide the igniter/thermocouple assembly and ferrule (not shown here) out of the µFPD
(Figure 54, D) and a new ferrule on the new igniter/thermocouple assembly. Then slide the µFPD
(Figure 54, C).
(Figure 55, D) with the end of the nut
(Figure 54, C). Keep pushing the ignitor toward the burner while tightening the nut
(Figure 54, D).
(Figure 54, A) to 20-in. lb.
(Figure 54, C).
(Figure
(Figure 54, D) when secured. Tighten the nut
(Figure 54, A) until there is enough
54, D) and gradually tighten the nut
(Figure
(Figure 54, D) to 4 in.-lb.
54,
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