Flowserve StarPac 3 - Manual (Page 43)

43
StarPac Intelligent Control System FCD VLENIM0066-05 04/14
flowserve.com
®
5. Unplug the wire harness that terminates the pressure sensors and thermocouple from the main PCB assem-
bly.
6. Remove the three retaining screws (item 6) from the main PCB assembly.
7. Carefully unplug and remove the top display board from the main PCB assembly. The bottom two boards of
the main PCB assembly will remain in the housing.
8. Remove the two screws (item 8) retaining the lower two boards of the main PCB assembly. Remove the metal
pressure sensor board stiffener.
9. Carefully lift the lower two boards out of the main PCB assembly. Disconnect the three wire connections and
user interface ribbon cable from the back of the lowest board of the main PCB assembly.
10. Remove the lower two boards of the main PCB assembly out of the housing.
11. Prior to installing the new main PCB assembly, remove the top display board of the new main PCB assem-
bly.
12. Connect the three wire connections and user interface ribbon cable on to the back of the lowest board of the
main PCB assembly.
13. Verify that the two pressure sensor O-rings (item 10) are in place in the housing.
14. Place the lower two boards of the main PCB assembly into the positioner and onto the bosses in the housing.
Make sure all wires are clear and do not get pinched between bottom circuit board and the housing bosses.
15. While holding the metal pressure sensor board stiffener in place, insert the two retaining screws through the
metal pressure sensor board stiffener and circuit board and fasten the lower two boards to the housing. An
outline of where the where the metal stiffener needs to be placed can be seen on the middle board of the main
PCB assembly. Tighten the screws evenly to 8 in-lb.
16. Connect the pressure sensor/thermocouple wire harness to the middle board of the main PCB assembly.
17. Carefully plug the top display board of the main PCB assembly into the middle board of the main PCB assem-
bly.
18. Insert the three retaining screws through the mounting holes of the fully assembled main PCB assembly and
tighten evenly.
19. Carefully re-install the keypad assembly. Make sure that the connector on the back of the keypad assembly
connects correctly to the connector on the main PCB board.
20. Insert the two retaining screws through the keypad and tighten evenly. Do not over-tighten.
14.16 Customer Interface Board Replacement
The customer interface board provides a connection point inside the explosion-proof housing for all hookups to the
positioner.
To replace the customer interface board, refer to Figures 5 and 24 and proceed as outlined below. The following tools
are required:
• Phillips screwdriver