Lenze MDxMA-MHxMA-MFxMA-MDERA-MHERA Three-phase AC motors - Manual (Page 28)

Mechanical installation
Installation
5
l
28 BA 33.0005−EN 2.0
5.3 Installation
ƒ The mounting surface must be dimensioned for the design, weight and torque of
the motor.
ƒ The foot and flange faces must rest flat on the mounting surface.
– Incorrect motor alignment reduces the service life of the roller bearings and
transmission elements.
Impacts on shafts can cause bearing damages.
ƒ Do not exceed the permissible range of ambient operating temperature ((
¶ 24).
ƒ Fasten the motor securely
ƒ Ensure that the ventilation is not impeded. The exhaust air, also the exhaust air of
other machines next to the drive system, must not be taken in immediately.
ƒ During operation, surfaces are hot, up to 140 °C! Ensure that guard preventing
accidental contact is in place!
Ensure an even surface, solid foot/flange mounting and exact alignment if a direct clutch
is connected. Avoid resonances with the rotational frequency and double mains frequency
which may be caused by the assembly.
Use appropriate means to mount or remove transmission elements (heating) and cover
belt pulleys and clutches with a touch guard. Avoid impermissible belt tensions.
The machines are half−key balanced. The clutch must be half−key balanced, too. The visible
jutting out part of the key must be removed.
Designs with shaft end at the bottom must be protected with a cover which prevents the
ingress of foreign particles into the fan.
5.4 Assembly of built−on accessories
Follow the instructions below carefully. Please note that, in the event of impermissible
alteration or modification of the motor, you will lose all entitlements to make claims under
warranty and to benefit from product liability obligations.
ƒ Mount the transmission elements:
– Shocks and impacts must be avoided! They could destroy the motor.
– Always use the centre bore in the motor shaft (in accordance with DIN 332, design
D) for mounting.
– Tolerances of the shaft ends:
£ Æ 50 mm: ISO k6, > Æ 50 mm: ISO m6.
ƒ Only use an extractor for the disassembly.
ƒ When using belts for torque/power transmission:
– Tension the belts in a controlled manner.
– Provide protection against accidental contact! During operation, surface
temperatures of up to 140°C are possible.