COMMISSIONING
EN / Alpha alternator - Alpha Pro regulator / June 2007 17
Follow all steps in order of succession as described
below:
1 Measure and record the battery voltage at idle.
2 Start the engine.
3 Check for abnormal noise or vibration.
4 The green [bulk] LED on the Alpha Pro regulator
(see figure 15) will illuminate, indicating that the
charge-cycle begins.
5 Measure and record the battery voltage. The
battery voltage should be higher than measured
before at step 1. The battery voltage rises until
the green [abs] LED illuminates.
6 When the green [abs] LED illuminates the
absorption mode commences. Measure and
record the battery voltage (@ 25°C / 77°F). It
should stabilize at 14.25 ± 0.05V for a 12V
alternator or 28.50 ± 0.10V for a 24V alternator
(see sections 5.2 and 5.2.2 for adjustment of this
voltage)
7 An absorption timer starts to keep the Alpha Pro
regulator in the absorption mode. The factory
setting of this timer is 4 hours
NOTE!
For testing you might want to reduce the
absorption time temporarily; see sections
5.2 and 5.2.4 for adjustment of this timer.
8 When absorption time has elapsed, the green
[float] LED will illuminate. This means that the
float mode has started.
If you have passed the above mentioned tests, the
charging system is ready for operation. Else check
section 6.4 for trouble shooting
5.2 ADJUSTMENTS
Both the Alpha alternator and the Alpha Pro
regulator are preset from the factory with settings
that will work fine for most batteries.
Figure 14: Adjustment of the potentiometers
The Alpha Pro regulator has three potentiometers
(see figure 15) to adjust the charging system
according to the demands of the electrical
installation
CAUTION!
Invalid settings of the potentiometers can
cause serious damage to your batteries.
Adjustments of settings may be
undertaken by authorised personnel only!
Keep a record of setting changes in this
manual.
CAUTION!
Use a 0.4 x 2.5mm flat blade screwdriver
to adjust the potentiometers. Do not
attempt to drive the settings past the
indicated limits. You will damage the
potentiometers.
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