Balancing And Fitting Coupling Halves And Pulleys; Mounting And Alignment Of The Motor; Radial Forces And Belt Drives; Motors With Drain Plugs For Condensation - ABB M3JP Manuel D'installation

4.5 Balancing and fitting
coupling halves and pulleys
As standard, balancing of the motor has been carried out
using a half key.
Coupling halves or pulleys must be balanced after machin-
ing the keyways. Balancing must be done in accordance
with the balancing method specified for the motor.
Coupling halves and pulleys must be fitted on the shaft by
using suitable equipment and tools which do not damage
the bearings and seals.
Never fit a coupling half or pulley by hammering or remove
it by using a lever pressed against the body of the motor
4.6 Mounting and alignment
of the motor
Ensure that there is enough space for free airflow around
the motor. It is recommended to have a clearance
between the fan cover and the wall etc. of at least ½ of the
air intake of the fan cover. Additional information may be
found from the product catalog or from the dimension
drawings available on our web pages: www.abb.com/
motors&generators.
Correct alignment is essential to avoid bearing, vibration
and possible shaft failures.
Mount the motor on the foundation using the appropriate
bolts or studs and place shim plates between the founda-
tion and the feet.
Align the motor using appropriate methods.
If applicable, drill locating holes and fix the locating pins
into position.
Mounting accuracy of a coupling half: check that clear-
ance b is less than 0.05 mm and that the difference a1 to
a2 is also less than 0.05 mm. See figure 2.
Re-check the alignment after the final tightening of the
bolts or studs.
Do not exceed permissible loading values for bearings as
stated in the product catalogs.
Check that the motor has sufficient airflow. Ensure that no
nearby objects or direct sunshine radiate additional heat to
the motor.
For flange mounted motors (e.g. B5, B35, V1), make sure
that the construction allows sufficient air flow on the outer
surface of the flange.

4.7 Radial forces and belt drives

Belts must be tightened according to the instructions of
the supplier of the driven equipment. However, do not
exceed the maximum belt forces (i.e. radial bearing
loading) stated in the relevant product catalogs.
WARNING
Excessive belt tension will damage bearings and can
cause shaft breakage. For Ex d and Ex de-motors
excessive belt tension may even cause danger by
eventual mutual contact of the flame path parts.
4.8 Motors with drain plugs
for condensation
Check that drain holes and plugs face downwards. In
vertical position mounted motors the drain plugs may be in
horizontal position.
Non-sparking & Increased safety motors
Motors with sealable plastic drain plugs are delivered with
these in the closed position in aluminum motors and in the
open position in cast iron motors. In clean environments,
open the drain plugs before operating the motor. In very
dusty environments, all drain holes should be closed.
Flameproof motors
Drain plugs, if requested, are located at the lower part of
the end shields in order to allow condensation to escape
from the motor. Open the drain plug by turning it counter-
clockwise, tap it to check free operation and close it by
pressing and screwing it clockwise.
Dust Ignition Protection Motors
The drain holes must be closed on all dust ignition
protection motors.
4.9 Cabling and electrical
connections
The terminal box on standard single speed motors nor-
mally contains six winding terminals and at least one earth
terminal.
In addition to the main winding and earthing terminals, the
terminal box can also contain connections for thermistors,
heating elements or other auxiliary devices.
Suitable cable lugs must be used for the connection of all
main cables. Wiring for auxiliaries can be connected into
their terminal blocks as such.
Motors are intended for fixed installation only. Unless
otherwise specified, cable entry threads are metric. The
protection class and the IP-class of the cable gland must
be at least the same as those of the terminal boxes.
Ensure only certified cable glands for increased safety and
flameproof motors are used. For non-sparking motors,
cable glands must comply with IEC/EN 60079-0. For Ex
tD/Ex t motors, cable glands must comply with IEC/EN
60079-0 and IEC/EN 60079-31.
NOTE!
Cables should be mechanically protected and
clamped close to the terminal box to fulfill the
appropriate requirements of IEC/EN 60079-0 and
local installation standards.
3GZF500730-47 rev F 08-2016 | ABB Motors and Generators ML/EN – 9