Emerson Process Management 760004-A MAINTENANCE AND SERVICE, SECTION, WARNING, 4-1OVERVIEW, QUALIFIED PERSONNEL, Figure 4-1.Removal of Cover and Insulation Shield

Model NGA 2000 HFID

Instruction Manual

760004-A February 2002

SECTION 4

MAINTENANCE AND SERVICE

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 module to cool.

2.Refer to Figure 4-1. 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 in- ner insulation shield to base, lift up to re- move.

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

Cover

Insulation Shield

	WARNING
		BURNER
		EXHAUST
PURGE	BURNER	OUT
AIR OUT	AIR IN	WARNING
REGULATED	PURGE	ATTENTION
AIR IN	AIR IN

HEATED

SAMPLE IN

HEATED

SAMPLE

BYPASS

FUEL

IN

PRESSURE

RELIEF

VALVE

Cover/Rear Panel Secur-	Securing	Front Panel Securing
ing 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 Service 4-1