Edwards CDX1000 User Manual

A708-01-880 Issue E
Page 64 © Edwards Limited 2013. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
10. Move the pump motor so that the motor flange (3) locates against the flange of the coupling housing (15), and so
that the bolt holes in the two flanges are aligned.
11. Ensure that the gasket is correctly located and is not distorted, then use the bolts (2) to secure the pump motor
to the coupling housing (15).
12. Use the access hole in the coupling housing (15) and slide the drive hub (19) on the motor shaft (4) until the gap
(21) between the drive hub and the coupling hub (10) is correctly set, as shown in detail B.
13. Apply a suitable thread sealant (such as Loctite 243 Nutlock) to the two new set screws (8), then fit the set
screws into the drive hub (19) and tighten to a torque of 17 Nm (12.5 lbf ft).
14. Check the gap (21) between the drive hub and the coupling hub again:
z If the gap is still correctly set, continue at Step 16.
z If the gap is not correctly set, loosen the set screw (8) and continue at Step 13 above to set the gap again.
15. Move the motor (1) slightly away from the coupling housing (15), then fit the flexible insert (18) to the coupling
hub (10).
16. Move the motor (1) towards the coupling housing (15) again, and turn the drive hub (19) as necessary (so that it
is correctly aligned with the gaps in the coupling insert, 18), until the drive hub fully engages in the coupling
insert, and the motor flange (3) is fully located against the flange of the coupling housing (15).
17. Tighten all of the fixing bolts (2) to a torque of 70 Nm (50 lbf ft).
18. Use the four bolts (17) to secure the coupling cover (16) to the coupling housing (15). Tighten the bolts to a
torque between 3 and 5 Nm (2.2 and 3.7 lbf ft).
5.11.3 Check the direction of pump rotation
After fitting the new pump motor, check the direction of pump rotation before operating the pump: use the
procedure in Section 3.12.
5.12 Replace the flexible coupling insert
Use the following procedure to replace the flexible coupling insert:
1. Ensure that the pump is isolated from the electrical supply.
2. Refer to Figure 14. Undo the four bolts (17) which secure one of the coupling covers (16) to the coupling housing
(15), then remove the coupling cover.
3. Undo the four bolts (17) which secure the other coupling cover (16) to the coupling housing (15), then remove
the coupling cover.
4. Loosen the set screws (7) on the holding ring (20), then slide the holding ring off the coupling insert (18).
5. Remove the coupling insert (18) and dispose of it: refer to Section 6.2.
6. Fit the new coupling insert (18) to the gaps between the teeth on the drive hub (19) and coupling hub (10).
7. Turn the holding ring (20) so that the reference line on the holding ring is aligned with the split in the coupling
insert (18), then slide the holding ring over the insert.
8. Tighten the set screws (7) to secure the holding ring (20) in place.
WARNING
Ensure that the direction of rotation of the pump is correct before operating the pump. If not, and
the pump direction of rotation is incorrect, the inlet pipeline will be pressurised and may be
damaged and there will be a risk of injury to people or explosion or fire.

Edwards CDX1000 Specifications

General

Brand	Edwards
Model	CDX1000
Category	Water Pump
Language	English