Model 755A

Instruction Manual

245364-V May 2002

6-0

SERVICE AND MAINTENANCE ..........................................................................................

6-1

6-1

Initial Checkout with Standard Gases ...................................................................................

6-1

6-2

Detector Component Checks ................................................................................................

6-2

 

a.

Detector...........................................................................................................................

6-2

 

b.

Source Lamp...................................................................................................................

6-2

 

c.

Photocell .........................................................................................................................

6-2

 

d.

Suspension .....................................................................................................................

6-2

6-3

Detector Component Replacement .......................................................................................

6-3

 

a.

Detector Replacement ....................................................................................................

6-3

6-4

Source Lamp Replacement...................................................................................................

6-5

 

a. Photocell Replacement and Adjustment.........................................................................

6-7

6-5

Heating Circuits .....................................................................................................................

6-7

 

a. Case Heater Control Circuit ............................................................................................

6-7

 

b.

Detector/Magnet Heating Circuit.....................................................................................

6-8

7-0

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

7-1

7-1

Circuit Board Replacement Policy.........................................................................................

7-1

7-2

Selected Replacement Parts.................................................................................................

7-1

7-3

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

7-2

8-0

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

8-1

8-1

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

8-1

8-2

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

8-1

8-3

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

8-1

APPENDIX A - VAISALA BAROMETRIC PRESSURE TRANSDUCER..........................................

A-1

A-1

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

A-1

A-2

Circuit Function......................................................................................................................

A-1

A-3

Installation..............................................................................................................................

A-1

A-4

Adjustment.............................................................................................................................

A-2

A-5 High Altitude Version (Option)...............................................................................................

A-2

Rosemount Analytical Inc. A Division of Emerson Process Management

Contents

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