General; Operating; Maintenance - ABB MT Série Manuel D'installation, D'exploitation Et De Maintenance

3. Operating

Use
Operating conditions
The machines are intended for use in industrial drive
applications.
Normal ambient temperature limits are -20° to +40°C.
Maximum altitude 1000 m above sea level.
Safety considerations
The machine is intended for installation and use by
qualified personnel, familiar with relevant safety
requirements.
Safety equipment necessary for the prevention of
accidents at the installation and operating site must be
provided in accordance with the local regulations.
WARNING
Small motors with supply current directly
switched by thermally sensitive switches can
start automatically.
Points to observe
1. Do not use the machine to step on.
2. The temperature of the outer casing of the
machine may be hot to the touch during normal
operation.
3. Some special machine applications require
special instructions (e.g. using frequency
converter supplies).
4. Lifting lugs must only be used for lifting the motor.
They must not be used to lift the motor when it is
attached to other equipment.
Assembly and dismantling

General

Dismantling and assembly of machines must be carried
out by qualified personnel using only suitable tools and
working methods. All repairs must be carried out
according to the standard IEC-60079-19.
Bearings
Special care should be taken with the bearings.
These must be removed using pullers and fitted by
heating or using special tools for the purpose. How
to replace bearings is described in detail in a separate
instruction leaflet available from ABB Sales Office.
Fitting coupling halves and pulleys
Coupling halves and pulleys must be fitted using suitable
equipment and tools that do not damage the bearings.
Never fit a coupling half or pulley by hammering into
place or remove it using a lever pressed against the
body of the machine.
Mounting accuracy of coupling half :
check that the clearance b is less than 0.05 mm and
that the difference a1 to a2 is also less than 0.05 mm.
See figure 3.
ABB / Low Voltage Motors / Manual 11-2002

4. Maintenance

Maintenance and lubrication
General inspection
- Inspect the machine at regular intervals.
- Keep the machine clean and ensure free
ventilation airflow.
- 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.
Lubrication
WARNING
Beware of all rotating parts!
WARNING
Grease can cause skin irritation and eye
inflammation. Follow all safety precautions
specified by the manufacturer.
Machines with permanently greased bearings
Bearings are usually permanently greased bearings of
either Z or 2Z types.
Bearing types are specified 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 180 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
132 4-8
160 2
160 4-8
180 2
180 4-8
Depending on application and load conditions, see
applicable product catalogue.
Hours of operation for vertical motors are half of the
above values.
Duty hours
for life
40 000
31 000
40 000
23 000
40 000
19 000
40 000
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