Routine Maintenance; Checks; Bearings And Lubrication - Leroy-Somer LSRPM Series Installation And Maintenance Manual

LEROY-SOMER

3 - ROUTINE MAINTENANCE

3.1 - Checks

Running-in the bearings for series 4500 and 5500
When the motor is commissioned, and each time the bearings
are replaced, the bearings must be run-in to obtain optimum
service life.
Set the rotation speed to 4000 mn
temperature stabilises, increase the speed by 500 mn
maximum speed. During this period, check that the bearing
temperature remains below 110°C.
Checks during start-up,
Check: - noise
- vibration
- operation of the buttons/switches
- also check the current and voltage on the machine
while it is operating with the rated load.
Checks after approximately 50 hours' operation,
Check: - that the screws fixing the motor and the coupling
device are correctly tightened. In the case of chain or
belt transmission,
check that the tension is adjusted correctly.
Annual checks
Check: - that the screws fixing the motor are correctly tightened,
- the electrical connections
- check the vibration.
Cleaning
To ensure the motor operates correctly, remove any dust or
foreign bodies which might clog the cover grille and the housing
fins.
Precaution: before carrying out any cleaning operation check
that the motor is completely sealed (terminal box, drain holes,
etc.).
Dry cleaning (vacuuming or compressed air) is always prefe-
rable to wet cleaning.
Always clean at reduced pressure from the centre
of the motor outwards to avoid introducing dust
and particles under the seals.
Draining condensation water
Temperature variations cause condensation to form inside the
motor, which must be removed before it adversely affects motor
operation.
Condensation drain holes, located at the bottom of the motors
(bearing in mind their operating position) are sealed with plugs
which must be removed and then replaced every six months (if
they were not replaced, the motor degree of protection would
no longer be maintained).
Clean the holes and plugs before reassembly.
Note: In conditions of high humidity and significant tempera-
ture variations, a shorter period is recommended.
As long as it poses no risk to the protection of the motor, the
condensation drain plugs can be removed.
18
Installation and maintenance
LSRPM - PLSRPM
Synchronous permanent magnet motors
, then each time the bearing
–1
, up to
–1

3.2 - Bearings and lubrication

The bearings and type of grease nipple are defined in
accordance with the table below:
Frame
Lubrication type
size
Series
N.D.E./D.E.
(mm)
≤ 160 Greased for life in the factory
5500
200 Bearings with grease nipples
≤ 160 Greased for life in the factory
4500 200 Bearings with grease nipples
> 200 Bearings with grease nipples
≤ 200 Greased for life in the factory
3600
> 200 Bearings with grease nipples insulated for fr. size > 250 standard
Greased for life in the factory
≤ 200
3000
> 200 Bearings with grease nipples insulated for fr. size > 250 standard
≤ 200 Greased for life in the factory
2400
> 200 Bearings with grease nipples insulated for fr. size > 280SD standard
≤ 200 Greased for life in the factory
1800
> 200 Bearings with grease nipples insulated for fr. size > 280 standard
≤ 200 Greased for life in the factory
1500
> 200 Bearings with grease nipples insulated for fr. size > 280 standard
≤ 200 Greased for life in the factory
900
> 200 Bearings with grease nipples
≤ 200 Greased for life in the factory
750
> 200 Bearings with grease nipples
375 ≤ 160 Greased for life in the factory
3.2.1 - Type of grease
When the bearings are not greased for life, the type of grease
is indicated on the nameplate.
As standard, this grease is EXXON MOBILE POLYREX
EM103 and we recommend that this is used for subsequent
lubrication.
Avoid mixing greases
3.2.2 - Permanently greased bearings
Under normal operating conditions, the service life (L10h) of the
lubricant is 25,000 hours for a machine installed horizontally
and for temperatures less than 25°C.
3.2.3 - Bearings with grease nipples
The bearings are lubricated in the factory
The end shields are fitted with bearings lubricated by Técalémit
grease nipples.
The frequency of lubrication and quantity and
quality of grease are indicated on the nameplates.
Refer to these to ensure correct lubrication of the
bearings.
Even in the event of prolonged storage or
downtime, the interval between 2 greasing
operations must never exceed 2 years.
4155 en - 2012.05 / e
Ball bearing type
N.D.E. D.E.
standard standard
insulated insulated
standard standard
insulated standard
insulated insulated
standard standard
standard standard
standard standard
standard standard
standard standard
standard standard
standard standard
standard standard
standard standard
standard standard