MSG Equipment MS005 Manual De Usuario página 31

Table 5 – Connection of a alternator without a voltage regulator
3. Go to the "Alternator" menu and in the opened window select: the nominal voltage of the
alternator being diagnosed (12 V), the type of alternator (Lamp), the maximum test current, and
the pulley diameter (if the value is known).
4. Before activating the diagnostic mode, a preliminary alternator check window will open, see
Fig. 26.
4.1. Using the alternator drive control buttons, set the alternator pulley speed within the range
of 100 to 150 rpm.
4.2. Visually assess: is the alternator rotating normally. If there are noises or vibrations from the
alternator indicating mechanical failure or incorrect mounting, stop the diagnosis by pressing
the "Cancel" button.
4.3. To continue the diagnosis, press the "Ok" button.
5. Conduct a check at which speed alternator begins, for this smoothly increase the drive speed
until the output voltage increases and becomes equal to 13.9 to 14.8 V.
6. Evaluate alternator performance under load by:
6.1. Set the drive speed within the range of 2500 - 3000 rpm.
6.2. Smoothly increase the load on the alternator, while the output voltage value should remain
constant and the value of alternating current in circuit B+ "I, AC" should not exceed 10% of the
set load value. Also, the current oscillogram should not show large peaks, the values should
fluctuate within the same limits.
7. To complete the alternator diagnostics, stop the alternator drive and then exit the test mode.
The alternator can then be removed from the bench.
8. Failure to fulfill one of the requirements of paragraphs. 5 - 6.2 indicates a faulty alternator
winding.
Terminal in the
alternator socket
B+
B-
F1
F2
Color of the
diagnostic cable
wire
Red
Black
Green
Green
English
User manual
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