26
Installation and maintenance
LSRPM - PLSRPM
Synchronous permanent magnet motors
LEROY-SOMER
4155 en - 2012.05 / e
9.2 - LSRPM 100 L motors
9.2.1 - Dismantling
- Remove the screws (27) and then take off the cover (13).
- Remove the screw, then pull out the fan (7) with its bushing
(224).
- If encoder already present:
remove the lock nuts fastening
the encoder to the spacers (296) then unscrew the encoder
(159) from the NDE shaft extension.
- Remove the encoder connector lock nut (187).
- Take out the key (21) and remove the drive end and non drive
end seals (39 and 54).
- Unscrew the tie rods (14) then remove them.
- Using a bronze drift, remove the NDE shield (6) and recover
the preloading washer (59), then disengage the DE shield from
the housing bore.
- If Hall effect sensor already present:
disconnect the Hall
effect sensor (93) (Caution: cable should be pulled out).
- Take care not to remove the rotor from the stator. If absolutely
necessary, place the motor in a vertical position and clamp the
stator so as to overcome the magnetic force, as described in
the procedure in the appendix.
- Using a hoist, remove the rotor from the stator, taking care not
to touch the winding.
- It is possible to remove the rotor horizontally by knocking the
NDE shaft extension hard with a plastic mallet.
- Remove the circlip (38).
- Remove the DE shield.
- Take out the bearings (30) and (50) using a bearing remover,
while protecting the end of the shaft extension with a washer.
Avoid knocking the running surfaces of the shaft.
9.2.2 - Reassembly
- See section 6.2 before reassembly.
- Slide the circlip (38) onto the front part of the shaft.
- Mount the new bearings on the shaft (see section 6.3 on
mounting bearings).
- Place the end shield (5) in position and fix it with the circlip (38).
- Screw in a shackle, place the motor in a vertical position and
clamp the stator as described in the procedure in the appendix.
- Using a hoist, slowly lower the rotor into the stator, taking care
not to touch the winding.
Warning: the rotor exerts a very strong magnetic force.
Since there is a risk of trapping your fingers between the DE
shield and the housing spigot, it is advisable to hold the
housing with one hand and the rotor with the other hand by
the DE shaft extension.
- If Hall effect sensor already present:
connect the Hall effect
sensor (pass the cable fully back through).
- Position the preloading washer (59) with a small amount of
grease in the back of the bearing cage of the NDE shield (6),
then remount the NDE shield (6), positioning it on the housing.
- Fit a new seal (39) with the spring facing outwards.
- Place the tie rods (14) in position and tighten the nuts
diagonally to the recommended torque (see section 6.4).
- Mount the shield seals with grease (54 at the non drive end)
(39 at the drive end).
- If encoder already present:
reassemble the encoder
(procedure in the appendix).
- Mount the fan (7) using a drift to bed it into position.
- Using a key in the handle, check that the rotor turns, then
remove the handle. Check also that there is no axial play if
there is a locked end shield.
- Replace the cover (13) and fix it with the screws (27).
- Replace the key (21).
LSRPM 90 L to LSRPM 160 LR
foot / flange / foot and flange mounted
NDE
DE
LSRPM 90 L to LSRPM 160 LR
foot / flange / foot and flange mounted
NDE
DE
LSRPM 90 L to LSRPM 160 LR
foot / flange / foot and flange mounted
NDE
DE
