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Instruction Manual
760004-A
February 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Service 4-23
Model NGA 2000 HFID
LED Indicator Assembly
657029
Purge Air Flow
Switch 656533
Burner Air Regulator
902832
Burner Air Sensor
656443
Air Ignite Restrictor
655794
Manual Ignite
Toggle Switch
657053
Purge Air Regulator
871672
Burner Air Solenoid Valve
656219
Fuel Regulator
902832
Fuel Sensor
656444
Air Measurement Re-
strictor 656888
O-Ring
011167
Toggle Switch Seal
898980
O-Ring
010177
O-Rings
008025
Diffuser
657548
LON/Power Module
656560
Connector
fitting
Regulator Mounting Nut
Regulator Mounting Bracket
Plugs
Male Adapter
Fitting
Sensor Fittings
657412
4-10 FRONT PANEL COMPONENTS
The following components are mounted to the
front panel:
•
LON/Power Module
•
Manual Ignite Toggle Switch
•
LED Indicator Assembly
•
Purge Air Regulator
•
Purge Air Flow Switch
•
Burner Air Solenoid Valve
•
Burner Air Regulator
•
Fuel Regulator
•
Burner Air Sensor
•
Fuel Sensor
•
Air Ignite Restrictor
•
Air Measurement Restrictor
Figure 4-20. Front Panel – Exploded View