© Edwards Limited 2009. All rights reserved. Page 43
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MAINTENANCE
A705-74-880 Issue K
20. Fit the coupling insert (15) to the gaps between the teeth and the drive hub (16) and coupling hub (14).
21. Turn the holding ring (17) so that the reference line on the holding ring is aligned with the split in the coupling
insert (15), then slide the holding ring over the element.
22. Tighten the set screws (3) to secure the holding ring (17) in place.
23. Ensure that all of the fixing bolts (1) are tightened to a torque between 128 and 132 Nm (94 and 97 lbf ft).
24. Use the four bolts (13) to secure one of the coupling covers (12) to the coupling housing (7). Tighten the bolts to
a torque between 3 and 5 Nm (2.2 and 3.7 lbf ft).
25. Use the four bolts (13) to secure other of the coupling covers (12) to the coupling housing (7). Tighten the bolts
to a torque between 3 and 5 Nm (2.2 and 3.7 lbf ft).
5.14 Replace the coupling insert
Use the following procedure to replace the coupling insert(s):
1. Refer to Figure 12. Undo the four bolts (13) that secure one of the coupling covers (12) to the coupling housing
(7), then remove the coupling cover.
2. Undo the four bolts (13) that secure the other coupling cover (12) to the coupling housing (7), then remove the
coupling cover.
3. Loosen the set screws (3) on the holding ring (17), and then slide the holding ring off the coupling insert (15).
4. Remove the coupling insert and dispose of it: refer to Section 6.2.
5. Fit the new coupling insert (15) to the gaps between the teeth on the drive hub (16) and coupling hub (14).
6. Turn the holding ring (17) so that the reference on the holding ring s aligned with the split in the coupling insert
(15), and then slide the holding ring over the element.
7. Tighten the set screws (3) to secure the holding ring (17) in place.
8. Use the four bolts (13) that secure one of the coupling covers (12) to the coupling housing (7). Tighten the bolts
to a torque between 3 and 5 Nm (2.2 and 3.7 lbf ft).
9. Use the four bolts (13) that secure the other coupling cover (12) to the coupling housing (7). Tighten the bolts to
a torque between 3 and 5 Nm (2.2 and 3.7 lbf ft).
Table 7 - Hub Gap Setting
Pump Gap Setting
GV260M, 50Hz -1.5 mm*
GV260M, 60Hz 7 mm
GV410M, 50Hz -1.5 mm*
GV410M, 60Hz 26 mm
GV600M, 50Hz -1.5 mm*
GV600M, 60Hz 26 mm
* Motor shaft end protrudes beyond coupling face.
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