Specifications

Heated Flame Ionization Detector Analyzer Module
Rosemount Analytical NGA 2000
748414-A
August 1999
33
MAINTENANCE AND TROUBLESHOOTING
4
Set Screw
M3X0.5 x 10mm
903125
RTD Detector
657063
Ignitor Assembly
657205
O-Ring
903736
O-Ring
903737
Flameout Sensor
657199
Temperature Sensor
657468
Retainer, Burner Cap
The components shown can be replaced without removing burner/thermal block from oven.
Oven not shown for clarity.
Thermal block shown in phantom for clarity.
Burner Cap
4. Install replacement ignitor and new o-ring. Using open-end wrench, snug down. Do not
over-tighten!
5. Re-attach wiring connector.
6. Install oven cover
4.2.2.4 F
LAMEOUT
S
ENSOR
1. Refer to Figure 4-4A. Remove the four screws on the oven cover, remove cover.
2. Refer to Figure 4-5. Disconnect the flameout detector wiring connector, note location.
3. Lift up the burner cap until flameout sensor is accessible. Using an open-end wrench,
unscrew the flameout detector from the burner. Verify that o-ring is also removed.
4. Install replacement flameout detector and new o-ring. Using open-end wrench, snug
down. Do not over-tighten!
5. Re-attach wiring connector.
6. Install oven cover.
F
IGURE
4-5. B
URNER
- S
ENSOR
, F
LAMEOUT
D
ETECTOR
, RTD D
ETECTOR AND
I
GNITOR