Siemens Maxum II - Page 41

12.Remove the ¼ " vent tube from the top of the FID block using a 9/16" open-ended wrench.
Vent Tube
Figure 4-7 FID Vent Tube Location on FID Assy
13.Using a 3.0mm Allen wrench, remove the FID cover set screw from the front of the FID
Assembly.
FID purge tube
(discard)
Purge tube screws (4)
(reuse)
EC cover plate
(discard)
Heater assembly
(discard)
Igniter assembly
(discard)
FID mounting plate
Heater assembly screws (4)
(reuse)
Thermal gasket
(remains on FID)
Setscrew for FID
bottom body
FID
bottom
body
FID
body
Heater purge tube
(discard)
Cable tie
(cut and discard)
Pipe gasket (discard)
Cover
setscrew
A
D
B
C
Figure 4-8 FID FID Parts (with Old Igniter)
14.Remove the cover from the FID block by pulling up and out, and then remove the insulation
from the FID block.
Flame Ionization Detector
4.4 Replacing the FID Igniter
Maxum Edition II Detectors
Service Manual, May 2018, A5E42019847001 41