Instruction Manual

748297-E June 2003

Model NGA2000 HFID

4-0

MAINTENANCE AND TROUBLESHOOTING .....................................................................

4-1

4-1

Overview................................................................................................................................

4-1

4-2

Component Replacement......................................................................................................

4-3

 

a.

Oven................................................................................................................................

4-3

 

b.

Burner Sensor, Detectors and Ignitor .............................................................................

4-4

 

c.

Burner Internal Components...........................................................................................

4-7

 

d.

Thermal Block .................................................................................................................

4-11

 

e.

Electronics Assembly......................................................................................................

4-13

 

f.

Fan Assembly .................................................................................................................

4-18

 

g.

Flow Controller ................................................................................................................

4-19

 

h.

DC Power Supply Module...............................................................................................

4-21

 

i.

Front Panel Components ................................................................................................

4-22

 

j.

Rear Panel Components.................................................................................................

4-27

4-3

Troubleshooting Checklist .....................................................................................................

4-29

 

a.

Safety System .................................................................................................................

4-29

 

b.

Ignition.............................................................................................................................

4-29

 

c.

Drift..................................................................................................................................

4-30

 

d.

Noise ...............................................................................................................................

4-30

5-0

REPLACEMENT PARTS ......................................................................................................

5-1

5-1

Matrix .....................................................................................................................................

5-1

5-2

Replacement Parts ................................................................................................................

5-2

 

a.

General ...........................................................................................................................

5-2

 

b.

Pneumatics .....................................................................................................................

5-2

 

c.

Oven Components ..........................................................................................................

5-3

6-0

RETURN OF MATERIAL ......................................................................................................

6-1

6-1

Return Of Material .................................................................................................................

6-1

6-2

Customer Service ..................................................................................................................

6-1

6-3

Training..................................................................................................................................

6-1

ii Contents

Rosemount Analytical Inc. A Division of Emerson Process Management