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SAFETY INSTRUCTIONS
F156.6 / F156.6A
Carefully read personal and machine SAFETY INSTRUCTIONS (at the beginning of this manual)
ELECTRICAL SYSTEM
Risk of injury from battery acid and
gases.
Wear goggles, protective gloves and
strong working clothes.
PRIOR TO WORKING ON THE ELEC-
TRICAL SYSTEM
Shut off the engine.
Set ’Electrical System’ key switch to
0 and withdraw key.
Set battery main switch to OFF and
withdraw switching lever.
Disconnect control elements and
control console from machine cir-
cuit.
Prior to working on the electrical
system where tools, spare parts, etc.
may come into contact with electrical
cables or contacts, turn off the bat-
tery main switch or disconnect the
battery.
Disconnect the negative pole first,
then the positive pole.
After work:
Reconnect the positive pole first,
then the negative pole.
Read and observe "Operating In-
structions - Alternator, control ele-
ments and control console".
Read and observe "Inspection and
servicing - General instructions".
Always use a meter for voltage and
continuity testing.
Do not use any test lamp.
Do not "tap against ground".
This will cause a short circuit with
consequent damage to the generator
or to the PCS electronic system.
ALTERNATOR
Never disconnect electrical connec-
tions on the alternator, regulator and
battery when the engine is running.
This would damage the alternator
and regulator.
When connecting the batteries,
never interchange the cables (pay at-
tention to polarity).
Voltage and continuity tests must be
done with a meter only.
Never use a test lamp.
Never check by touching ground
with a bare wire.
The resulting short circuit damages
the alternator and the regulator.
When starting up the engine, the al-
ternator is controlled (pre-excited)
by an electronic circuit. This ensures
that the alternator can discharge
power.
The circuit is an integral part of the
central electronic system in the con-
sole.
A LED in the console (load control)
shows that the alternator is func-
tioning correctly. This LED must light
up when the key-switch is switched
on and go out when the engine is run-
ning.
If this is not the case, there is a fault
in the alternator circuit or in the con-
sole.
To prevent further damage, the
cause of the fault must be located
and rectified as quickly as possible.
Consult your local Dealer.