Sullivan-Palatek 125UD, Руководство по эксплуатации и каталог запасных частей, Страница: 11 / 64

__________________________________SULLIVAN-PALATEK
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VARIABLE SPEED OPERATION:
The compressor will operate @ varying speeds depending on the signal from the line pressure
transducer. This operating speed will vary from a maximum speed (set at the factory), and will try to
maintain a constant line pressure (this is the control pressure setting on the T1 micro processor control).
If air usage is very low, once the unload pressure setting is reached, the compressor will shut off. When
the line pressure drops again, the compressor will re-start after a specified set time interval.
UNLOADED AND/OR SHUTDOWN MODES:
When little or no air is being used, the service line pressure will rise to the “unload” setting of the micro
processor which will interrupt the voltage to the control solenoid to open and allow air pressure to close
the inlet valve. This same air pressure which is holding the inlet valve shut is also venting the pressure in
the separator tank to reduce the power required.
If the micro processor determines that the compressor has been unloaded for 3 minutes, then the
compressor goes into a “sleep” mode which shuts off the drive motor. When air is being used again, the
compressor will re-start (provided that it has been off for a least a minute).
Note that the micro processor is programmed to limit the number of starts per hour (depending on motor
size) for motor protection. If the compressor is starting too often, thus causing the compressor to be off
when air is required; please contact the factory for adjustments to be made to the controls to avoid this
problem.