Specifications

748414-A
August 1999
30
Heated Flame Ionization Detector Analyzer Module
Rosemount Analytical NGA 2000
4
MAINTENANCE AND TROUBLESHOOTING
4.2.1.2 O
VEN
D
ISASSEMBLY
1. Refer to Figure 4-4A. Remove the four retaining screws on the oven cover, remove
cover.
2. Remove the two screws and one nut securing the outer oven front panel to the outer
oven, remove front panel.
3. Remove the nuts and ferrules from sample in and sample bypass out.
CAUTION: PREAMP CONNECTORS
The electrical preamp connectors are fragile, handle with care to avoid breaking
solder connection.
4. Refer to Figure 4-4B. Remove the two nuts and washers from the electrical preamp
connectors on the inner oven front panel. Do not unsolder these connections.
5. Unscrew the three screws from inner front panel and remove it.
6. Refer to Figure 4-4C. Remove the two hex nuts securing the burner to the bottom of
the inner oven.
7. Disconnect the sample input and output bypass fittings.
8. Lift the burner/thermal block up and out, while disconnecting exhaust.
Reverse procedure for installation.