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A705-40-880 Issue B
Page 56
© Edwards Limited 2011. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Maintenance
5.15.4
Replace the drive coupling element
Refer to the attached amendment for servicing details.
5.15.5
Remove the drive hub and fit to the new pump-motor (pumps without a torque
limiter)
1. Refer to
. Undo and remove the grub-screw (10) and the grub-screw (14) on the coupling hub (5).
2. Use a suitable puller tool to remove the coupling hub (5) from the motor shaft (6).
3. Remove the key (9) from the shaft and dispose of the key.
4. Dispose of the key supplied with the new pump-motor.
5. Inspect the motor shaft (6) of the new pump-motor (7). The motor shaft must be free of burrs and dirt. If
necessary, clean or refinish the motor shaft.
6. Inspect the motor shaft bore of the drive coupling (5). The bore must be free of burrs and dirt. If necessary,
clean or refinish the bore.
7. Fit the new key (9, supplied in the Motor Fitment Kit) into the motor shaft (6).
8. Fit the coupling hub (5) onto the motor shaft (6) and push it down until it will go no further. Check that the
lower face of the drive hub is 25 mm above the motor flange; if the gap is not correct, contact your supplier or
Edwards for advice.
9. Apply a suitable thread sealant (such as Loctite 242 Nutlock) to the new grub-screws (10 and 14), then screw the
grub-screws into the correct screw holes in the coupling hub (5). Fully tighten the grub-screws to secure the
coupling hub (5) to the motor shaft (6).
5.15.6
Remove the torque limiter and fit to the new pump-motor (pumps with a torque
limiter)
1. Refer to
. Undo and remove the grub-screw (14) and the grub-screw (6) on the torque limiter (5).
2. Use a suitable puller tool to remove the torque limiter (5) from the motor shaft (7).
3. Remove the key (10) from the shaft and dispose of the key.
4. Dispose of the key supplied with the new pump-motor.
5. Inspect the motor shaft (7) of the new pump-motor (8). The motor shaft must be free of burrs and dirt. If
necessary, clean or refinish the motor shaft.
6. Inspect the motor shaft bore of the torque limiter (5). The bore must be free of burrs and dirt. If necessary,
clean or refinish the bore.
7. Fit the new key (10, supplied in the Motor Fitment Kit) into the motor shaft (7).
8. On the EDP80 pump, fit the torque limiter (5) onto the motor shaft (7) and push it fully down until the lower
face of the torque limiter is 24 mm above the motor flange. Refer to attached amendment for details on fitting
the torque limiter.
On the EDP160, EDP250 and EDP400 pumps, fit the torque limiter (5) onto the motor shaft (7) and push it fully
down until the lower face of the torque limiter is against the shoulder on the motor shaft.
9. Apply a suitable thread sealant (such as Loctite 242 Nutlock) to the new grub-screws (14 and 6), then screw the
grub-screws into the correct screw holes in the torque limiter (5). Fully tighten the grub-screws to secure the
torque limiter (5) to the motor shaft (7).