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Instruction Manual
748297-E
June 2003
4-26 Maintenance and Troubleshooting Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA2000 HFID
Air Ignite Restrictor
1. On the burner air solenoid valve:
a. Disconnect the tube at the top
elbow fitting.
b. Disconnect tube at tee fitting.
c. Lift solenoid valve from ana-
lyzer module.
2. Disconnect tube going to air ignite re-
strictor.
3. Remove restrictor from solenoid
valve.
4. Add Teflon pipe thread tape to re-
placement restrictor, install into sole-
noid.
5. Re-connect tubes to restrictor, elbow
and tee fitting.