39
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
12.2 - FLSPX 160 and 180 motors
12.2.1 - Removing the rear bearing housing
- Remove the cover (13) once the fixing screws (27) have been
removed;
extract the fan (7);
- withdraw the fixing screws (273) from the rear bearing
housing (6);
- 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 seal
(54) follows and is not re-usable;
- 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.
12.2.2 - Removing the front bearing housing
- Remove the fixing screws (270) from the front bearing
housing;
- using a suitable lifting device, extract the rotor (3) + front bearing
housing (5) assembly, without making contact with the winding;
- withdraw the fixing screws (40) of the front inner cover (33);
- release the key (21);
- using two levers or a soft hammer, separate the front bearing
housing (5) from the rotor (3), keeping the latter straight;
- release the bearing housing by sliding it on the shaft. The
seal(s) (39 or 39a and 39b) in the case of a roller bearing)
follow(s) and cannot be re-used;
- remove all traces of sealant located on the housing on the
frame.
12.2.3 - Changing the bearings
- 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 surface;
- 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”.
12.2.4 - Re-fitting
- Each bearing housing must be fitted with a continuous bead
silicone or polyurethane sealant at the housing on the frame;
- fit the bearings on the rotor shaft, not forgetting the front inner
cover (33) and the rear outer cover (53) in the case of a roller
bearing.
- Where bearing housings are equipped with a roller bearing,
fit and grease the inner seal (39b) before fitting the bearing
housing (5). The lip of the seal must be aligned towards the
exterior of the bearing housing;
- slide the front bearing housing (5) over the bearing (30);
- refit the fixing screws (40) of the inner cover (33) or outer rear
cover (53) in the case of a roller bearing. Replace the AZ
washers to ensure a perfect seal;
- introduce the rotor + bearing housing assembly into the stator
without making contact with the winding;
- present the bearing housings, grease nipples upwards, not
forgetting the pre load washer (59) to the rear. Slide them until
they are fully engaged;
- engage the bearing housings;
- check that the motor turns freely by hand.
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.
- Refit the bearing housing (270) and (273) fitting screws in
position and tighten the nuts diagonally to the recommended
torque (see § 10.2.4);
- after greasing it refit a new seal (54) in position using a drift;
replace the fan (7);
- replace the cover (13) and refit the fixing screws (27);
- after greasing it refit a new seal (39 or 39a) in position using
a drift;
- grease the roller bearing whilst rotating the shaft by hand.
Quantity of grease for the roller bearing:
- HA 160: FRONT = 40 cm
3
- HA 180: FRONT = 50 cm
3
5
6
59
50
30
54
39
33
5
6
59
50
30
54
39
33
5
6
53
50
39a
39b
39b 39a
30
54
33
5
6
53
50
30
54
33
5
6
59
50
30
54
39
33
60
38
60
60
38
FLSPX 160 and 180
foot mounted motors (except V6)
standard bearings
REAR FRONT
FLSPX 160 and 180
foot mounted motors IM V6
standard bearings
REAR FRONT
FLSPX 160 and 180
foot mounted motors IM V6
drive-end roller bearings
FLSPX 160 and 180
flanged (or feet and flange)
drive-end roller bearings
FLSPX 160 and 180
flanged (or feet and flange)
standard bearings
REAR FRONT
REAR FRONT
REAR FRONT
