Operating; Use; Operating Conditions; Safety Considerations - ABB MT serie Installations- Betriebs Und Wartungshandbuch

3. Operating

3.1 Use

3.1.1 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.

3.2 Safety considerations

The machine is intended for installation and use by
qualifi ed 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.

3.2.1 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.
GB –
8

3.3 Assembly and dismantling

3.3.1 General

Dismantling and assembly of machines must be carried
out by qualifi ed personnel using only suitable tools and
working methods. All repairs must be carried out
according to the standard IEC-60079-19.

3.3.2 Bearings

Special care should be taken with the bearings.
These must be removed using pullers and fi tted by
heating or using special tools for the purpose.
How to replace bearings is described in detail in a
separate instruction leafl et available from ABB Sales
Offi ce.
3.3.3 Fitting coupling halves and
pulleys
Coupling halves and pulleys must be fi tted using
suitable equipment and tools that do not damage the
bearings.
Never fi t 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 fi gure 3.
ABB / Low Voltage Motors / Manual 12-2004