A705-74-880 Issue K
Page 42
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MAINTENANCE
1. Refer to
. Dispose of the key supplied with the new pump-motor.
Note:
For motor power and flange compatibility, refer to
.
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) onto 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) to the set screw (5), and 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 (19). 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 (19) 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) that 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) that 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
±1mm.
17. Check that the gap (detail A, item 20) is as shown in
below.
18. If the gap is not correct:
Check that the flange of the pump-motor (19) is correctly located against the flange of the coupling housing
(7)
If the pump-motor is correctly fitted, loosen the set screw (4) on the drive hub (16) and adjust the position
of the coupling hub, then tighten the set screw again. Continue at Step 16 to check that the gap is now set
correctly.
19. Apply a suitable thread sealant (such as Loctite 242) to the set screw (4) then fully tighten it to secure the drive
hub (16) to the motor shaft (18).
Содержание DRYSTAR GV Series
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