12.Power the analyzer back on.
13.After the oven and FID has had time to heat up, check the flows and light the flame.
4.4
Replacing the FID Igniter
This section describes the procedure to retrofit the FID igniter in the Maxum II. This involves
replacing the original FID igniter module with a new version FID igniter module. The procedure
also involves replacing of some of the related hardware, such as the purge tube and heater
assembly. It will be necessary to power down the analyzer for this procedure.
4.4.1
Procedure - Parts
A parts kit (Siemens part number 2022073-001 for 115V, 2022073-002 for 230V) is required
for this procedure. This kit contains the following items.
Part Number
Description
Quantity
A5E41666926001
TUBE, FID PURGE
1
A5E41666941001
GASKET, FID PROTECTIVE PIPE
1
1317001-031
GROMMET, 1-1/32 ID, 1/16 GR, 1-3/4 OD
1
A5E41666802001
BUSHING, FID PURGE TUBE
1
1312420-331
SCREW, M3X 4, SOCKET HEAD CAP, SST
2
1312530-006
WASHER, M3, HELICAL SPRING LOCK, SST
1
A6X19905099
O-RING, SIZE 020, 0.964 X .O70, KALREZ
1
2021925-001
IGNITER,FID ASSEMBLY, MAXUM II
1
A5E41666948001
STRAP, GROUND, FID
1
A5E41666957001 (115V)
ASSEMBLY, HEATR, FID/FPD
1
A5E41666957002 (230V)
A5E35374578001
COVER, DETECTOR, FID
1
A5E41381855001
PURGE FILTER, 2.0 MICRON, 10-32 THREAD
1
A5E41849023
WASHER, .375"X.190"X.031", 25% GF PTFE
1
The list above is provided for reference only. The official parts list for the kit is included with
the kit when it is shipped.
Also required is an appropriate tool kit. A lubricant such as Krytox 240 AC or equivalent will
be needed in order to lubricate the new grommets. If the EC Cover Plate Gasket (Part Number
2021171-001) is damaged, a replacement gasket will be required as well. Read this entire
procedure before planning the work to make sure that necessary items are on hand.
Flame Ionization Detector
4.4 Replacing the FID Igniter
Maxum Edition II Detectors
Service Manual, May 2018, A5E42019847001
37