Specifications

748414-A
August 1999
32
Heated Flame Ionization Detector Analyzer Module
Rosemount Analytical NGA 2000
4
MAINTENANCE AND TROUBLESHOOTING
4.2.2 B
URNER
S
ENSOR
, D
ETECTORS AND
I
GNITOR
This section covers burner components which can be replaced without removal of oven
from the chassis.
4.2.2.1 T
EMPERATURE
S
ENSOR
1. Refer to Figure 4-4A. Remove the four screws on the oven cover, remove cover.
2. Refer to Figure 4-5. Remove the burner cap retainer.
3. Disconnect the temperature sensor wiring connector, note location.
4. Remove the temperature sensor.
5. Insert replacement sensor.
NOTE
The leads of the temperature sensor must be leading away and down from the
sensor to enable proper fit of burner cap retainer.
6. Install the burner cap retainer. U-slot must be located above temperature sensor.
7. Re-attach wiring connector.
8. Install oven cover.
4.2.2.2 RTD D
ETECTOR
1. Refer to Figure 4-4A. Remove the four screws on the oven cover, remove cover.
2. Refer to Figure 4-5. Loosen the set screw securing RTD detector.
3. Disconnect RTD detector wiring connector, note location.
4. Gently grasp RTD detector wires and pull out of hole.
5. Insert replacement RTD detector into hole, snug down set screw.
6. Re-attach wiring connector.
7. Install oven cover.
4.2.2.3 I
GNITOR
1. Refer to Figure 4-4A. Remove the four screws on the oven cover, remove cover.
2. Refer to Figure 4-5. Disconnect the ignitor wiring connector, note location.
3. Using an open-end wrench, unscrew the ignitor assembly from the burner. Verify that o-
ring is also removed.