Flowserve I90 Series - Manual

Worcester Controls
WCAIM2053
(Part 19504)
Pulsair Loop-Powered Positioner
Modular Accessory System (Series I90/L90)
Installation, Operation and Maintenance Instructions
I. Introduction ...........................................................................................................................................2
II. Installation............................................................................................................................................4
A. Mounting Instructions .....................................................................................................................4
B. Air Connections ...............................................................................................................................5
C. Wiring Connections .........................................................................................................................6
III. Operating and Maintenance Instructions.............................................................................................6
A. Positioner.........................................................................................................................................6
1. Positioner Specifications and Technical Data ..............................................................................6
2. Environmental Considerations .....................................................................................................7
3. Electronic Circuit Board Basics....................................................................................................7
4. Calibration ...................................................................................................................................9
5. Recalibration..............................................................................................................................10
6. Operating Function Settings ......................................................................................................10
7. Wiring Diagrams and Fail Open Modifications Table .................................................................12
8. Troubleshooting.........................................................................................................................13
9. Circuit Board Replacement ........................................................................................................13
B. Housing Assembly .........................................................................................................................14
1. Cover .........................................................................................................................................14
2. Base...........................................................................................................................................14
3. Troubleshooting.........................................................................................................................15
C. Piezo Valve Block...........................................................................................................................16
1. Assembly ...................................................................................................................................16
2. Wiring........................................................................................................................................17
3. Operation ...................................................................................................................................18
4. Troubleshooting.........................................................................................................................18
D. Switch Options ..............................................................................................................................18
1. Assembly ...................................................................................................................................18
2. Cams .........................................................................................................................................19
3. Wiring........................................................................................................................................19
4. Operation ...................................................................................................................................19
5. Troubleshooting.........................................................................................................................19
E. Feedback Potentiometer and Potentiometer Options .....................................................................20
1. Assembly ...................................................................................................................................20
2. Wiring........................................................................................................................................20
3. Troubleshooting Potentiometer..................................................................................................21
F. 4-20 mA Output Transmitter Option ...............................................................................................21
1. Assembly ...................................................................................................................................21
2. Wiring........................................................................................................................................21
3. Calibration .................................................................................................................................22
4. Troubleshooting.........................................................................................................................22
G. Radio Frequency Interference (RFI) Filter......................................................................................23
1. Installation and Wiring...............................................................................................................23