jcb G20, Руководство оператора

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Maintenance
Engine
101 9831/0650-3 101
When using the machine in single phase, or for voltages different from the one pre-set at the factory,
recalibration of the AMP and STAB potentiometers could be necessary.
Intervention of Protection Devices Causes
Underspeed Protection Instantaneous Intervention
• Speed reduced by 10% of nominal RPM (Revolutions Per Minute).
Delayed intervention of Overload Protection
• Overload by 20% of nominal rating.
• Power factor (cos f)lower than the nominal one.
• Ambient temperature above 50°C (121.9°F).
Intervention of Both Protections:
• Combination of factor 1 with factors 2, 3, 4.
In case of intervention the output voltage will drop down to a value which will depend on the fault.
The voltage will return automatically to its nominal value as soon as the fault is removed.
For further details on regulators, please see the specific manual.
Starting and Stopping The Operations
All the instrumentation for starting, running and stopping the system shall be provided by the installer.
The starting, running and stopping operations must be carried out by skilled personnel who have read and
understood the safety instructions at the beginning of this manual.
Figure 81.
When the system is set to work for the first time, which has to be done at a reduced speed, the operator
shall check that no anomalous noises can be detected. If an anomalous noise is detected, stop the system
immediately and improve the mechanical coupling.
Maintenance
The alternators series ECO-ECP are designed to give a long maintenance free working life.
Before performing this operation, read the safety requirements at the beginning of this manual carefully.