Parker AC890 Product Manual page 252

Phase Assembly Replacement Procedure
1. Replace any badly distorted heatsink clamps with spare clamps provided. (Clamps used in packaging).
2. Carefully slide replacement phase limb assembly into position making sure that the studs on the input
busbars (left-hand side) located in the holes provided on the phase limb busbar. Re-fit nuts and washers,
but do not tighten.
3. Re-fit output busbar bolts and washers and tighten to 6.8 NM torque.
4. Secure phase limb assembly to chassis using heatsink clamps.
5. Remove service plate.
6. Tighten input busbar nuts to 6.8 NM torque.
7. Secure earth wire to chassis - 4NM torque.
8. Reconnect cable(s) to phase limb assembly printed circuit board.
9. Refit capacitor joining plate with M6 captive nuts to 6.8 NM torque.
10. Refit insulating caps to M2 (middle) left-hand side capacitor joining plate nuts.
11. Refit DC busbars 2 off M6 captive nuts on capacitor joining plate tightened to 6.8 NM torque and 2 off
M6 captive nuts at the external connection busbars tightened to 6.8 NM torque.
12. Refit brake connection plate and top cover if required (refer to Chapter 5)
13. Refit drive front cover (metal) via 4 off ¼ turn fasteners (take care not to damage PCBs beneath cover).
14. Reconnect 4-way op-station cable to LED PCB (see figure 10.1).
15. Refit drive top and bottom terminal cover (plastic) via 2 off ¼ turn fasteners at top and bottom of drive.
890SD (Standalone) Drive: Frame G, H & J
Routine Maintenance and Repair
10-20
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