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FAILURES
Each unit is carefully tested in our factory and the performances are verified; even so a
readjustment can be sometime necessary according to the following suggestions.
PROBLEMS
CAUSES
REMEDIES
1. Low engine speed
1. Check rpm and set at the nominal
value of 3100 rpm without load (3700
for 60 cycles)
2. Faulty capacitor
2. Check and replace
Alternator excitation failure
3. Faulty windings
3. Check that winding resistance as
follows:
1. Engine speed too high
1. Check and adjust rpm
High no-load voltage
(over 240 V)
2. Capacitor with too high
capacity
2. Check and replace
1. Engine speed too low
1. Check and adjust rpm
2. Faulty rotating diodes
2. Check and replace
3. Beak down in windings
3. Check windings resistance as above
Low no-load voltage
(under 230 V)
4. Capacitor with low capacity 4. Check and replace with a new one
1. Low loaded engine speed
1. Dirty fuel filter
2. Overload
2. Check the load indicator
Proper no-load but low under
load voltage
3. Rotating diodes short
circuited
3. Check and replace
1. Loose contacts
1. Check connections
Unstable voltage
2. Uneven rotation
2. Check for uniform rotation speed
(dirty fuel filter)
1. Broken bearings
1. Replace
Noisy generator
2. Loose coupling
2. Check and repair
