SDMO R570U, User And Maintenance Manual

Page: 232 / 299

6
LEROY-SOMER
2011.03/ g
Installation and maintenance
LSA 47.2 - 4 POLES
ALTERNATORS
3742 en -
3 - INSTALLATION
Personnel undertaking the various
operations indicated in this section must
wear personal protective equipment
appropriate for mechanical and electri-
cal hazards.
3.1 - Assembly
All mechanical handling operations
must be undertaken using suitable
equipment and the machine must be
horizontal. Check how much the machine
weighs (see 4.8.3.) before choosing the
lifting tool.
3.1.1 - Handling
The generously-sized lifting rings are for
handling the alternator alone. They must not
be used to lift the genset. The choice of
lifting hooks or handles should be determined
by the shape of these rings. Choose a lifting
system which respects the integrity and the
environment of the alternators.
During this operation, do not allow
anyone to stand under the load.
3.1.2 - Coupling
3.1.2.1 - Single-bearing alternator
Before coupling the machines, check that
they are compatible by:
- undertaking a torsional analysis of the
transmission,
- checking the dimensions of the flywheel
and its housing, the flange, coupling discs
and offset.
When coupling the alternator to the
prime mover, do not use the fan to turn
the alternator or rotor.
The holes of the coupling discs should
be aligned with the flywheel holes by
cranking the engine.
Make sure the alternator is securely
bedded in position during coupling.
Check that there is lateral play on the
crankshaft.
3.1.2.2 - Double-bearing alternator
- Semi-flexible coupling
Careful alignment of the machines is
recommended, checking that the lack of
concentricity and parallelism of both parts
of the coupling do not exceed 0.1 mm.
This alternator has been balanced with a
1/2 key.
3.1.3 - Location
The room where the alternator is placed
must be ventilated to ensure that the
ambient temperature cannot exceed the
data on the nameplate.
3.2 - Checks prior to first use
3.2.1 - Electrical checks
Under no circumstances should an
alternator, new or otherwise, be operated
if the insulation is less than 1 megohm
for the stator and 100,000 ohms for the
other windings.
WARNING
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