English (GB)
10
4.3.2 LS without sleeve, construction type 2
The position numbers in the following refer to section
without sleeve, construction type 2
Removing the motor
1. Remove the coupling guard.
2. Remove the screws and nuts from the coupling halves.
3. Carefully loosen and remove the spring using a screwdriver.
4. Remove the screws holding the motor on the base frame.
5. Lift off the motor.
6. Loosen the set screws in the coupling flange of the pump.
7. Pull the coupling flange off the pump shaft using a puller.
Removing the bearings and shaft seals, non-drive end
1. Remove the four screws (114a) holding the bearing cover
(113d).
2. Remove the bearing cover (113d) and gasket (113e).
3. Loosen the round nut (54e). Remove the round nut (54e) and
the washer (54c) from the shaft non-drive end.
4. Remove the screws (114b).
5. Loosen the bearing housing (113) using expansion bolts.
6. Pull the bearing housing (113) off the shaft (51).
7. Pull the bearing (54) and tab washer (54d) out of the bearing
housing (113).
8. Remove the lip seal (113f). Use a punch, if necessary.
9. Remove the slinger (79).
10. Remove the screws (58a).
11. Remove the seal cover (58).
12. Remove the gasket (110a) or the O-ring (110).
13. Remove the stationary shaft seal part (105). Use a punch, if
necessary.
14. Remove the seal housing screws (114).
15. Loosen the seal housing
(124) using expansion bolts.
16. Remove the seal housing (124).
17. Remove the O-ring (109, 109a).
18. Pull the rotary shaft seal part (105) off the shaft (51).
Removing the bearings and shaft seals, drive end
1. Remove the key (11a).
2. Remove the four screws (114a) holding the bearing cover
(113c).
3. Remove the bearing cover (113c) and gasket (113e).
4. Remove the screws (114b).
5. Loosen the bearing housing (113) using expansion bolts.
6. Pull the bearing housing (113) off the shaft (51).
7. Pull the bearing (54) out of the bearing housing (113).
8. Remove the lip seal (113f). Use a punch, if necessary.
9. Remove the slinger (79).
10. Remove the screws (58a).
11. Remove the seal cover (58).
12. Remove the gasket (110a) or the O-ring (110).
13. Remove the stationary shaft seal part (105). Use a punch, if
necessary.
14. Remove the seal housing screws (114).
15. Loosen the seal housing (124) using expansion bolts.
16. Remove the seal housing (124).
17. Remove the O-ring (109, 109a).
18. Pull the rotary shaft seal part (105) off the shaft (51).
Removing the upper pump housing
1. Loosen the screws (26c, 26d), and remove them.
2. Fit the screws in the dismounting holes, thereby loosening the
rest of the pump housing (6a).
3. Lift off the upper pump housing (6a). Use lifting straps on the
lifting brackets of the pump housing.
4. Remove the screws (26c) from the dismounting holes, and
then knock up the guide pins so that they are not damaged.
Removing the shaft, impeller and gasket
1. Lift the shaft (51), including the impeller (49) and wear rings
(45a, 45b or 45c), free of the lower pump housing (6b).
2. Remove the wear rings (45a, 45b or 45c).
3. Remove the snap ring (65) (only pump type LS 200-150-483).
4. Remove the gasket (72a) from the pump housing (6b), and
clean the packing face.
Removing the impeller
1. Loosen and remove the impeller nut (67b).
2. Push the shaft until the key (11) is free of the impeller (49).
3. Pull the shaft (51) out of the impeller (49), and remove it.
4.4 Assembling the pump, with sleeve
4.4.1 LS with sleeve, construction type 1
Fitting the impeller
1. Fit the shaft (51) in the impeller (49).
2. Fit the impeller nut (67a) on the shaft, and tighten by hand.
3. Centre the shaft in the impeller (49) by measuring from the
impeller hub to the shoulder on each side of the shaft (51).
4. Tighten the impeller nut (67a).
Fitting the gaskets, impeller and shaft
1. Draw the outline of the old gasket (72a) on a new gasket
material (gasket thickness 0.8 mm), make holes for the
staybolts, and coarsely cut out the gasket.
2. Fit the guide screws in the lower pump housing (6b).
3. Fit the gasket (72a), and cut it out.
4. Fit the wear rings (45b) on the impeller (49), and check that
they can rotate freely.
5. Lift the shaft, impeller and wear rings home in the pump
housing. Make sure that the pins at the bottom of the pump
housing engage with the holes of the wear rings.
Summary of Contents for LS 100-80-241
Page 1: ...LS Service instructions GRUNDFOS INSTRUCTIONS ...
Page 2: ...2 ...
Page 22: ...English GB 22 9 Sectional drawings 9 1 LS with sleeve construction type 1 TM03 9952 4707 ...
Page 30: ...English GB 30 Fig 18 Construction type 3 LS 100 80 241 XE TM03 9951 4317 ...
Page 34: ...English GB 34 Fig 25 Construction type 4 LS 300 200 489 LS 350 250 508 TM03 9942 4317 ...
Page 44: ...44 ...
Page 45: ...45 ...
Page 46: ...46 ...
