Leroy-Somer CPLS 112, Руководство по установке и обслуживанию

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INSTALLATION AND MAINTENANCE
CPLS drip-proof 3-phase induction motors
4240 en - 2014.09 / b
LEROY-SOMER
3 - ROUTINE MAINTENANCE
Checks after start-up
After approximately 50 hours’ operation, check that the screws
fixing the motor and the coupling device are still tight. In the
case of chain or belt transmission, check that the tension is
correctly adjusted.
Ventilation
To ensure the motor operates correctly, remove any dust or
foreign bodies which might clog the grilles in the forced
ventilation unit and end shield.
For forced ventilation units equipped with standard or vinyl
filters (optional in both cases), it is advisable to clean the filter
periodically (having disassembled it) with compressed air,
depending on how polluted the surrounding environment is.
If the filter is too clogged, replace it.
Cleaning
Dry cleaning (vacuuming or compressed air) is recommended.
Cleaning must always be carried out at low pressure to avoid
dust and particles getting under the seals.
Necessary precaution: check that the motor is totally sealed
(terminal box, etc) before carrying out any cleaning operation.
Wet cleaning (using a hose or pressure washer)
is prohibited.
3.1 - Checking the bearings
As soon as you detect any of the following on the motor:
- Abnormal noise or vibration
- Abnormal temperature rise in the bearing when it is correctly
greased, the state of the bearings must be checked. Damaged
bearings must be replaced as soon as possible to prevent
worse damage to the motor and the equipment being driven.
When one bearing needs to be replaced, the other bearing
must also be replaced .
The seals should be changed routinely when the bearings
are changed. The drive end (DE) bearing must be freely
mounted to allow for expansion of the rotor shaft.
3.2 - Greasing
As standard, bearings on the CPLS 112, 132, 160 and
200 range of motors are permanently greased. (The end
shields do not therefore have grease nipples).
For CPLS 250 motors, or for specific applications such as high
speeds or heavy loads, motors can be equipped with
regreasable open ball bearings, or roller bearings. (The end
shields are then fitted with a grease nipple).
In this case the end shields are fitted with Tecalemit-Hydraulic
M8 x 125 grease nipples.
The bearings are lubricated in the factory with the grease
shown on the nameplate. When regreasing, always use
the same type of grease.
The interval between successive regreasings can depend on
additional parameters such as the ambient temperature (see
next page) and type of grease used.
The regreasing intervals, quantity and quality of
grease, are indicated on the motor nameplate.
Even in the event of prolonged storage or
downtime, the interval between two greasing
operations should never exceed 2 years.
Regreasing
Always begin by cleaning the waste grease channel.
Remove the covers and clean the grease nipple heads.
Efficient greasing only really occurs with the motor running,
which ensures that the new grease is well distributed in the
bearing.
If greasing cannot be carried out with the motor running (mainly
for safety reasons):
- Stop the motor.
- Inject only half the amount of grease shown on the nameplate.
- Turn the motor for a few minutes.
- Add more grease until the quantity indicated is reached.
Too much grease causes the bearing to overheat
(statistics show that more bearings are damaged
through too much grease than too little grease).
The new grease must be recently manufactured
and must not contain any impurities (dust,
water, etc).