2000 hours.
In case of the de-excitation of the alternator and the consequent irregularity of the electric current supply it
is necessary to carry out the following simple operations:
1) Clean the slip ring-brushes and their corrected mechanical position.
2) Check the position of the brushes; they must be lean for all their width, within the surface of rings.
3) Check the brushes and eventually replace them if worn.
FAULT
1) Insufficient residual voltage
2) Connection break
Alternator does not
3) Broken regulator
excite
4) Insufficient speed
5) Windings breakdown
6) Poor contact with the brushes
1) Reduced speed
2) Poor brushes contact
Low no-load voltage
3) Winding failure
4) Broken regulator
1) Low speed with load
Correct no-load
2) Broken regulator
voltage but too low
3) Defective winding rotor
with load
4) Load is too high
Correct no-load
1) Appliances with capacitors on
voltage but too high
the load
with load
2) Broken regulator
1) Rotating mass too small
Unstable voltage
2) Uneven speed
3) Poor contact on collector
1) Bad coupling
Noisy Functioning
2) Short circuit in windings or load
3) Faulty bearing
- 12 -
CAUSE
SOLUTION
1) Excite the rotor using a battery
2) Reset the connection
3) Replace the regulator
4) Adjust speed regulator
5) Check winding resistance and
replace damaged part
6) Clean and check the collector
1) Reset speed for drive motor
2) Check, clean ar replace the brushes
3) Check resistance and replace
damaged part
4) Replace the regulator
1) Adjust speed regulator
2) Replace the regulator
3) Check winding resistance and
replace the rotor if it is broken
4) Reduce the load
1) Reduce the capacitive load
2) Replace the regulator
1) Increase the flywheel of the primary
motor
2) Check and repair speed regulator
3) Check and clean the slip-ring and
the brushes
1) Check and correct coupling
2) Check windings and loads
3) Replace faulty bearing