Start-Up; Preliminary Inspection; Initial Start-Up; Operation - WEG G truck Serie Manual De Instalación, Operación Y Mantenimiento

7 START-UP

The alternator leaves the factory with some security measures for the transport. So before you put it into operation, these
protections (if any) must be rejected.

7.1 PRELIMINARY INSPECTION

Before the first start-up or after a long time out of
operation, check:
Is the alternator clean? Have the packaging and
protection elements been removed?
Are the connection parts of the coupling in perfect
conditions and well-greased and tightened where
necessary?
Is the alternator aligned? (According to item 6.3)
Are bearings properly lubricated?
Does the windings insulation resistance have the
prescribed value? (According to item 2.3.2)
Have all objects, such as tools, measuring instruments
and alignment devices, been removed from the
alternator operation place?
Is the alternator properly fixed?
Are the electrical connections in accordance with the
wiring diagram of the alternator?
Is the connection of the excitation correct, according to
the battery voltage?
Are the conductors of the line properly connected to
the main terminals so as to prevent a short circuit or
disconnection?
Is the alternator properly grounded?
After the alternator is driven with no load, does it rotate
smoothly without strange noises? Is the rotation
direction correct? (Note that when reversing the
direction of rotation it is necessary to check the phase
sequence and change it if necessary)
Is the ventilation not obstructed?

7.2 INITIAL START-UP

After having performed all instructions provided above, the
initial start-up can be performed. While running, the
automatic excitation starts and at rated speed, the
alternator is ready for action and may receive load.

7.3 OPERATION

Place the generator in operation until it reaches its thermal
stability and observe if noises and abnormal vibrations or
overheating arise.
If there are significant vibration variations in the unit from
the initial working condition to the conditions after the
temperature stabilizes, it is necessary to check the
alignment and leveling and the coupling of the alternator to
the driving machine, correct if necessary.
If you are not sure, contact WEG Technical Assistance.
The maximum tolerable vibration value is 20mm/s.

7.4 SHUTDOWN

Even after the de-excitation, there is still a residual voltage,
so only after complete stop of the machine it is allowed to
carry out any maintenance on the alternator.
10258257 – Installation, Operation and Maintenance Manual
www.weg.net
DANGER
The noncompliance with the directions
above can cause death or serious
injuries.
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