Emerson Process Management NGA2000 HFID MAINTENANCE AND TROUBLESHOOTING, SECTION

Model NGA2000 HFID

Instruction Manual

748297-E June 2003

SECTION 4

MAINTENANCE AND TROUBLESHOOTING

WARNING

QUALIFIED PERSONNEL

This equipment should not be adjusted or repaired by anyone except properly qualified service personnel.

4-1 OVERVIEW

This section contains instructions and procedures for troubleshooting and maintaining the HFID analyzer module. To access the internal components of the analyzer module, perform the following:

1.Remove power to the unit; shut off gases and disconnect lines. Allow mod- ule to cool.

2.Refer to Figure 4-1 below. Remove the six screws securing the front panel, then the six screws securing the cover to the rear panel. Slide cover towards rear panel to remove. Loosen four screws securing inner insulation shield to base, lift up to remove.

Figure 4-2 on page 4-2 illustrates the locations of major components of the HFID.

Cover

Insulation Shield

WARNING

		FUEL IN
	BURNER EXHAUST OUT
PURGE AIRBURNEROUT AIR IN
	WARNING
REGULATED AIRPURGEIN AIR IN	ATTENTION	PRESSURE RELIEF VALVE

HEATED SAMPLE IN

HEATED SAMPLE BYPASS

Cover/Rear Panel	Securing	Front Panel Securing
Securing Screws (6)
	Screw (4)	Screws (6)

Figure 4-1. Removal of Cover and Insulation Shield

Rosemount Analytical Inc. A Division of Emerson Process Management Maintenance and Troubleshooting 4-1