Removing A Proportional Valve - ABB PGC2000 Operation And Service Manual

7. Tighten one screw, using torque limiting screwdriver ABB Tool 801Z003-1, set at 1 in.-oz.
8. Tighten the second screw to 2 in.-oz.
9. Retighten the first screw to 3 in.-oz.
10. Retighten the second screw to 4 in.-oz
11. Retighten the first screw to 5 in.-oz.
12. Retighten the second screw to 6 in.-oz.
13. Retighten the first screw to 7 in.-oz.
14. Retighten the second screw to 7 in.-oz.
15. Plug the Sensor PCB cable into the corresponding connector on the Control PCB.
16. If another Sensor PCB Assembly needs to be replaced, repeat the appropriate steps to
remove the old Sensor PCB Assembly and install a new one. Be careful to observe the
precautions stated in the Note at the beginning of this procedure.
17. Reconnect the large ribbon cable to the Control PCB.
18. Reinstall the EPC Control Assembly cover and insert the ten screws and tighten them to
16 in.-lb, using ABB Tool TL1000/TL1002. Ensure that the flame-proof or explosion-proof
surfaces of the cover or the body of the Control Assembly are not damaged.
19. Reinstall the EPC cover panel and insert the two holding screws.

Removing a Proportional Valve

Use an ESD Wrist strap and proper grounding procedures before handling
any components in the EPC Control Assembly.
Be sure that the EPC Control Assembly has cooled to ambient temperature
(approximately one hour) before proceeding.
1. Perform the "Preparation" procedure.
2. Remove the two screws holding the EPC cover and remove the cover panel.
3. Remove the ten screws holding the EPC Control Assembly cover using ABB Tool
TL1009, and remove the cover. Be careful not to damage the flame-proof or explosion-
proof surfaces of the cover or the body of the Control Assembly.
4. Unplug the large ribbon cable from the Control PCB and fold it back to your left and out of
the way (see Figure 8-22).
5. Locate the valve to be replaced (See Figure 8-21).
2000-OSM, F2
CAUTION
8-47