Maintenance; Maintenance And Lubrication; General Inspection; Lubrication - ABB MT Serie Manual De Instalación, Operación Y Mantenimiento

4. Maintenance

4.1 Maintenance and lubrication

4.1.1 General inspection

– Inspect the machine at regular intervals.
– Keep the machine clean and ensure free
ventilation airfl ow.
– Check the condition of shaft seals (e.g. V-ring) and
replace if necessary.
– Check the condition of connections and mounting
and assembly bolts.
– Check the bearing condition by listening for
unusual noise, vibration measurement, bearing
temperature, inspection of spent grease or SPM
bearing monitoring.
* When changes of condition occur,
dismantle the machine, check the parts
and replace if necessary.

4.1.2 Lubrication

WARNING
Beware of all rotating parts!
WARNING
Grease can cause skin irritation and eye
infl ammation. Follow all safety precautions
specifi ed by the manufacturer.
4.1.3 Machines with permanently
greased bearings
Bearings are usually permanently greased bearings of
either Z or 2Z types.
Bearing types are specifi ed in the respective product
catalogues and on the rating plate of all our motors
except smaller frame sizes.
As a guide, adequate lubrication for sizes up to 200 can
be achieved for the following duration, according to L1
(i.e. that 99 % of the motors are sure to make the
interval time) at ambient temperature of 25°C. For
duties with ambient temperatures higher than 25°C,
see the respective product catalogue.
Frame size Poles
56-80 2-8
90-112 2-8
132 2-8
160 2-8
180 2-8
200 2
200 4
Table 3
Depending on application and load conditions, see
applicable product catalogue.
ABB / Low Voltage Motors / Manual 12-2004
Hours of operation for vertical motors are half of the
above values.
Motors with roller bearings have considerably shorter
grease life. For continuous operation regreasing nipples
should be considered.

4.1.4 Motors with regreasing nipples

Lubrication information plate and general
lubrication advice
If the machine is fi tted with a lubrication information
plate, follow the given values.
On the lubrication information plate, regreasing intervals
with regard to mounting, ambient temperature and
speed of rotation can be defi ned.
During the fi rst start or after a bearing lubrication it may
appear a temporary temperature rise, appr. 10-20
hours. ABB policy is to have reliability as a vital issue in
bearing lubrication intervals. That is why we follow the
L1-principle.
A. Manual lubrication
Regreasing while motor is running
– Remove grease outlet plug or open closing valve if
– Be sure that the lubrication channel is open
– Press the specifi ed amount of grease into the
– Let the motor run 1-2 hours to ensure that all
Regreasing while motor is at a standstill
Regrease motors while running. If this is not possible,
lubrication can be carried out while the machine is at a
standstill.
– In this case, use only half the quantity of grease, then
– When the motor has stopped, press the rest of the
– After 1-2 running hours close the grease outlet plug
B. Automatic lubrication
The grease outlet plug must be removed permanently
with automatic lubrication or open closing valve if fi tted.
Some motors may be equipped with a collector for old
Duty hours
grease. Follow the special instructions given for the
for life
equipment.
40 000
We recommend only the use of electromechanical
40 000
systems. Contact your local ABB Sales Offi ce.
40 000
40 000 The amount of grease per each lubrication interval
27 000 stated in the tables 4-5 should be doubled if an
40 000
automatic regreasing system is used.
If 2-pole motors are being automatically regreased, the
note (NOTE!) concerning lubricant recommendations
given for 2-pole motors in the chapter Lubricants shall
be followed.
fi tted.
bearing.
excess grease is forced out of the bearing.
Close the grease outlet plug or closing valve if fi tted.
run the motor for a few minutes at full speed.
specifi ed amount of grease into the bearing.
or closing valve if fi tted.
9 – GB