29
COMPILER TECO/ATI ENDORSEDDATE
01.08.2003
REG. CODE
1-5302-620
MODEL N°
50902
DATE OF ISSUE
08-03
REVISION 00
XII
RD210 RD 211RD270 RD278
44
ELECTRICAL EQUIPMENT
Electric starting with motor and alternator for battery re-charging
Characteristics:
Starter motor: anticlockwise rotation.
12V - 1.5 HP (1.1 kW) for RD 210-211
12V - 2.5 HP (1.9 kW) for RD 270-278
12V - 3.4 HP (2.5 kW) for RD 270-278
Flywheel alternator:
- For re-charging 12V/280W batteries giving 17A charge at 3000
RPM, for RD 210-211
- For re-charging 12V/220W batteries giving 14A charge at 3000
RPM, for RD 270-278
Regulator:
Electronic with controlled diodes and preset for battery re-charging
pilot light connection.
12V/24A for RD 210-211
12V/18A for RD 270-278
Optional external alternator with belt control:
- RD 210-211 for re-charging 12V/200W batteries giving 15.5A
charge at 6000 RPM with 12V/26A voltage adjustor.
- RD 270-278 for re-charging 12V/400W batteries giving 30A
charge at 8000 RPM with built-in voltage adjustor.
Battery:
12V; 80 to 90 Ah
To check starting system circuit see figures 47.
Circuit checking
1.Make sure the connections between regulator and alternator
are correct and in good condition.
2.Detach from the terminal on the starter motor, the red wire
coming from the alternator, and insert a direct current ammeter
with a 20 Amp range between said free terminal and the
detached wire.
3.Connect a direct current voltmeter with a minimum range of 15
Volts (fig. 44), to the battery terminals.
4.Insert starter key and start up a few times at no load or insert a
lamp load of 80 to 100 W at the ends of the battery to keep the
battery voltage under 13 Volts.
5.Run the engine up to the maximum of 3000 RPM. The charging
current reading on the ammeter should be about:
17A with 12V/280W alternator
14A with 12V/210W alternator
For intermediate values see fig. 46.
6.Disconnect lamp load and keep engine running at A/m revs. for
some time.
The battery voltage will increase progressively until it reaches
the setting limit of the regulator which is about 14.5 V.
Simultaneously, the charging current will drop to about 2A. This
will occur very quickly if the battery is charged and slowly if it is
discharged.
7.If the charging current cuts out or is lower than the values given
above, replace governor. If the performance does not improve
after this replacement, the trouble must be locked for in the
alternator.
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