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11. Generator option
Problem
The generator supplies no or insufficient
voltage.
Complete or significant voltage drop during
operation under load.
Excessive generator voltage.
Voltage fluctuates in short intervals.
Generator heats up to unacceptable levels.
When additional problems occur, call for
compressor service!
Possible cause(s)
The generator circuit breaker has tripped
due to overload or is defective.
Drive motor speed too low.
Mode switch in position 0.
Generator circuit breaker not depressed.
Compressor operating pressure set too
high, engine overloaded, speed decreases.
Coil of the "Speed increase" solenoid valve
defective.
Insufficient engine speed or speed control
inoperative.
The engine output has been reduced due
to climatic or other conditions.
Compressor operating pressure set too high.
Excessive engine speed.
Diesel engine operates irregularly.
The engine speed control operates
irregularly or is defective.
Clogged cooling air supply.
Machine is dusted.
Output reduction due to set-up at too high
an altitude.
Ambient temperature too high.
Attention
Use genuine spare parts only!
Correction
Check electrical load output.
Check that all electrical terminals are
properly seated.
Check generator protective switch and
replace if required.
Check connected electrical loads for short
or earth contact.
Set to nominal speed, max. 3,100 rpm.
Position switch in position 1.
Press the protective switch.
Re-adjust the operating pressure at the
adjuster.
Check and replace solenoid valve if
required.
Have the nominal speed adjusted by the
engine after-sales service max. 3,100 rpm.
Check that all electrical terminals are
properly seated.
Check connected electrical loads for short
or earth contact.
Do not operate the generator at nominal
output, see the operating instructions for
the engine.
Re-adjust.
Have adjusted to nominal speed.
Have checked by the engine after-sales
service.
Check according to the operating
instructions supplied by the engine
manufacturer.
Ensure that the cooling air supply is not
restricted.
Clean the machine and position in a way
that dust-free cooling air only will be taken
in. It is strictly recommended that the
cooling air is cleaned at regular intervals.
Partial load operation possible only.
The generators are designed to ensure that
no danger exists at ambient temperatures
of up to 35 °C. In higher ambient
temperature environments, the generator
may be operated at partial load only.
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