English (GB)
8
Removing the shaft, impeller and gasket
1. Lift the shaft (51), including the impeller (49) and wear rings
(45b), free of the lower pump housing (6b).
2. Remove the wear rings (45b).
3. Remove the snap ring (65).
4. Remove the gasket (72a) from the pump housing (6b), and
clean the packing face.
Removing the impeller
1. Remove the shaft sleeve (116a, 116b).
2. Remove the shaft sleeve O-ring (66).
3. Push the shaft until the key (11) is free of the impeller (49).
4. Pull the shaft (51) out of the impeller (49), and remove it.
4.2.3 LS with sleeve, construction type 3
The position numbers in the following refer to section
on page 23.
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 set screw in the bearing snap ring (54) (only pump
type LS 100-80-241).
4. Loosen the bearing snap ring (54) by moving it against the
direction of rotation (only pump type LS 100-80-241).
5. Remove any marks from the set screws on the shaft non-drive
end (51) (only pump type LS 100-80-241).
6. Remove the snap ring (54d).
7. Remove the screws (114).
8. Pull the seal housing (124) off the shaft (51) using a puller,
and then remove the slinger (79) and O-ring (109).
9. Pull the spring, washer and rotary shaft seal part (105) off the
shaft (51).
10. Pull the bearing (54) out of the seal housing (124).
11. Remove the stationary shaft seal part (105). Use a punch, if
necessary.
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 (114).
5. Pull the seal housing (124) off the shaft (51) using a puller,
and then remove the slinger (79) and O-ring (109).
6. Pull the spring, washer and rotary shaft seal part (105) off the
shaft (51).
7. Pull the bearing (53) out of the seal housing (124).
8. Remove the stationary shaft seal part (105). Use a punch, if
necessary.
Removing the upper pump housing
1. Loosen the screws (26c, 26d), and remove them.
2. Remove the vent screw (17), and then fit a lifting eye in the
thread.
3. Fit the screws in the dismounting holes, thereby loosening the
rest of the pump housing (6a).
4. Lift off the upper pump housing (6a).
5. 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
(45b), free of the lower pump housing (6b).
2. Remove the wear rings (45b).
3. Remove the snap ring (65).
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 (67a, 67b).
2. Loosen the set screws (116e), and remove the shaft sleeve
(116a, 116b).
3. Remove the shaft seal O-ring (66).
4. Push the shaft until the key (11) is free of the impeller (49).
5. Pull the shaft (51) out of the impeller (49), and remove it.
4.2.4 LS with sleeve, construction type 4
The position numbers in the following refer to section
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. Remove the snap ring (54d) and spacer ring (54c).
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 spacer ring (54c) 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 spring, washer and rotary shaft seal part (105) off the
shaft (51).
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 ...
