11. Generator option
48
Problem
Possible cause(s)
Correction
The generator supplies no or insufficient
voltage.
The generator circuit breaker has tripped due to
overload or is defective.
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.
Drive motor speed too low.
Set to nominal speed, max. 3,100 rpm.
Generator circuit breaker not depressed.
Press the protective switch.
Complete or significant voltage drop
during operation under load.
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.
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 to 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.
Compressor operating pressure set too high.
Re-adjust.
Excessive generator voltage.
Excessive engine speed.
Have adjusted to nominal speed.
Voltage fluctuates in short intervals.
Diesel engine operates irregularly.
Have checked by the engine after-sales
service.
The engine speed control operates irregularly or
is defective.
Check according to the operating
instructions supplied by the engine
manufacturer.
Generator heats up to unacceptable
levels.
Clogged cooling air supply.
Ensure that the cooling air supply is not
restricted.
Machine is dusted.
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.
Output reduction due to set-up at too high an
altitude.
Partial load operation possible only.
Ambient temperature too high.
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.
When additional problems occur, call for compressor service!
Use genuine spare parts only!
Attention
Summary of Contents for GDP21
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