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Instruction Manual
748297-E
June 2003
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Troubleshooting 4-17
Model NGA2000 HFID
Preamp Assembly
1. Per Section 4-2e on page 4-13, re-
move securing hardware from elec-
tronics assembly and lay on bench.
2. Disconnect and note location of ca-
bles.
3. Remove the two screws and washers
from the top bracket and slide the
preamp assembly out.
4. Remove the lower bracket from the
preamp assembly and install on re-
placement preamp assembly.
5. Slide replacement preamp assembly
into top bracket and secure with
mounting hardware.
6. Re-connect cables.
Figure 4-15. Preamp Assembly Installation
Bottom Bracket
Top Bracket
Preamp Assembly
656945