Nidec LEROY-SOMER FLSES 100 L, Руководство по пусконаладке и техническому обслуживанию

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Maintenance and service guide - LSPX-FLSPX ZONE 21 - Ex tb – LSES-FLSES ZONE 22 - Ex tc
5725 en - 2020.02 / c
INSTALLATION AND MAINTENANCE - FLSPX
12.4 - FLSPX 225 M to 280 motors
12.4.1 - Removing the rear bearing housing
- remove the cover (13) once the fixing screws (27) have been
removed,
- remove the shaft extension screw if necessary,
- extract the fan (7),
- withdraw the fixing screws of the rear inner cover (53),
- withdraw the fixing screws (273) from the rear bearing
housing (6),
- remove the fan key if relevant,
- using two levers or a soft hammer, release the rear bearing
housing (6), keeping the latter straight.
Release the bearing housing by sliding it on the shaft. The
seals (54a) and (54b) follow and become unusable.
- Put the dismantled components to one side and recover the
pre-load washer (59) which is to be relocated in its housing,
- remove all traces of sealant located on the housing on the
frame.
12.4.2 - Removing the front bearing housing
- Remove the front bearing housing without releasing the rotor
(3). To do this:
- withdraw the fixing screws (40) of the front inner cover (33);
- withdraw the fixing screws (270) from the front bearing
housing (5);
- release the key (21);
- using two levers or a soft hammer, extract the front bearing
housing (5), keeping the latter straight;
- release the bearing housing by sliding it on the shaft. The
seals (39a) and (39b) follow and become unusable,
- remove all traces of sealant located on the housing on the
frame.
12.4.3 - Changing the bearings
- Using a suitable lifting device, extract the rotor without making
contact with the winding;
- remove the front circlips (38);
- extract the bearings (30) and (50) using a suitable tool whilst
protecting the end of the shaft extension. Avoid making contact
with the shaft support surfaces.
- Change the bearings in accordance with the instructions
described in General section of § 10.2 (hot fitting only). NOTE:
Before carrying out any operations read § “CHECKS
BEFORE REFITTING”.
12.4.4 - Re-fitting
- Each bearing housing must be fitted with a continuous bead
silicone or polyurethane sealant at the housing on the frame;
- fill the decompression grooves (416) located in the shaft
passage with grease;
- fit the front bearing (30) on the rotor shaft, do not forget the
inner cover (33) and the circlips (38);
- if and only if the internal Ø of the stator allows them to pass
through, fit the rear bearing not forgetting the inner cover (53);
- introduce the rotor into the stator taking care not to make
contact with the winding. Fit the rear bearing (50) and the inner
cover (53) if this has not already been done.
- Grease and fit the inner seals; seal (54b) in the rear bearing
housing (6) and seal (39b) in the front bearing housing (5). The
seal lips must be aligned towards the exterior of the bearing
housings.
- Present the bearing housings, grease nipples upwards. Start
with the front bearing housing (5). Fit a pin in one of the inner
cover (33) threaded holes
to align the grease feed pipes.
- Finish with the rear bearing housing (6). Fit a pin in one of the
inner cover (53) threaded holes
to align the grease feed
pipes.
- Lift the rotor slightly and fit the bearing housings.
FROM this point on we recommend that at every step you
check that the motor rotates freely by hand before moving
on to the next instruction.
- Fit the bearing housing (270) and (273) fitting screws in
position and tighten them diagonally to the recommended
torque (see § 10.2.4);
- fit the inner cover fixing screws (33) and (53). Replace the AZ
washers to ensure a perfect seal;
- after greasing it refit a new seal (54a) in position using a drift;
- refit the fan key if relevant;
replace the fan (7):
- replace the shaft extension screw (10) and (11) if necessary;
- replace the cover (13) and refit the fixing screws (27);
- after greasing it refit a new seal (39a) in position using a drift;
- grease the front and rear bearings whilst rotating the shaft by
hand.
Quantity of grease for the ball bearings:
- HA 225-250: FR and REAR = 120 cm
3
- HA 280: FR = 170 cm3 / REAR = 120 cm
3
33 53
6
50
416
54a 54b
33 53
6
50
416
54a 54b
30
39a
39b
5
38
5
38
30
39a
39b
FLSPX 225 M to 280
standard bearings
FLSPX 225 M to 280
drive-end roller bearings
REAR FRONT
REAR FRONT