
A705-61-880 Issue M
Page 38
© Edwards Limited 2012. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
5.11.2
Fit the new pump-motor
CAUTION
Ensure that the pump-motor flange and the bottom flange of the coupling housing are clean and free of burrs.
If you do not, the pump-motor and coupling housing may be misaligned and you may damage the pump-motor,
the pump or the drive coupling when you operate the pump.
Note:
For motor flange compatibility and power, refer to
and
.
1. Refer to
. Dispose of the key supplied with the new pump-motor.
2. Inspect the motor shaft (18) of the new pump-motor (19). The motor shaft must be free of burrs and dirt.
If necessary, clean or refinish the motor shaft.
3. Inspect the motor shaft bore of the drive hub (16). The bore must be free of burrs and dirt. If necessary, clean or
refinish the bore.
4. Fit the new key (2, supplied in the Motor Fitment Kit) into the motor shaft (18).
5. Ensure that the set screw (4) does not protrude into the bore of the drive hub (16): if necessary, loosen the
set screw.
6. Fit the drive hub (16) fully on the motor shaft (18). Do not fully tighten the set screw.
7. Ensure that the coupling hub (14) is fully located on the pump shaft (9), against the shaft bearing nut (11).
If necessary:
Loosen the set screw (5) in the coupling hub (14).
Move the coupling hub so that it is fully on the pump shaft (9), against the shaft bearing nut (11).
Apply a suitable thread sealant (such as Loctite 242 Nutlock) to the set screw (5), then fully tighten it.
8. Slide the holding ring (17) over the coupling hub (14).
9. Inspect the bottom flange of the coupling housing (7) and the flange of the pump-motor (18). The flanges must
be free of burrs and dirt. If necessary, clean or refinish the flanges.
10. Use suitable lifting equipment to lift the pump-motor off the floor and move it close to the pump.
11. If necessary, fit slings around the pump-motor (18) and attach suitable lifting equipment to the slings. Use both
sets of lifting equipment to turn the pump-motor so that it is horizontal, with the pump-motor terminal-box at
the top, and with the drive hub (16) towards the coupling housing (7).
12. Undo and remove the four bolts (13) which secure one of the coupling covers (12) to the coupling housing (7),
then remove the coupling cover.
13. Undo and remove the four bolts (13) which secure the other coupling cover (12) to the coupling housing (7), then
remove the coupling cover.
14. Move the pump-motor (19) so that the motor flange locates against the flange of the coupling housing (7), and so
that the bolt holes in the two flanges are aligned.
15. Use the bolts (1) to secure the pump-motor (19) to the coupling housing (7).
16. Loosen the set screw (4) on the drive hub (16), then move the drive hub along the shaft until the gear teeth
on the drive hub (16) and coupling hub (14) are parallel, and the gap between the teeth on the two hubs is
2.5 ± 1 mm.
WARNING
Ensure that the pump-motor does not fall when you move it. The pump-motor is heavy
(see
) and can cause injury to people if it falls.