Model 755a – Emerson 755A User Manual
Page 5
Instruction Manual
245364-V
May 2002
Rosemount Analytical Inc. A Division of Emerson Process Management Contents iii
Model 755A
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