CLR is clear, use it to backspace one digit.
CAN or cancel, voids the whole input, use it to start over.
Pressure settings must be entered as whole numbers, no decimal
or factions. The individual intervals will be calculated and shown in
the display boxes on the right side of the setting screen. If numbers
are entered that are out of the allowed range, the input will be scaled
back to the range limit.
Alarm Signals
RELEASED 01/Jul/2024 12:28:06 GMT
7.5-15 kW (10-20 HP) Scroll Enclosed Air Compressors
the ALARM screen and activate the GENERAL FAULT indicator on the
alarm screen display if either of the two conditions occurs:
ACKN) to allow the display to go back to SYSTEM STATUS or any other
screen. Touch the VIEW button to advance to a screen showing which
pump-motor assembly is in fault and for what reason. The fault will
display and the affected pump-motor will be disabled until the RESET
button is pushed.
any pump accumulates to a required maintenance interval. The system
is designed for multiple pumps to accu mulate hours evenly and for
maintenance intervals to be ap proached simultaneously. To prevent
nuisance PUMP MAINT indications, all applicable maintenance
counters should be reset after the required maintenance actions are
performed. Use ACKN to allow the STATUS screen or other screens to
be displayed. Touch the VIEW button to advance to the next screen.
Consult the operators manual for details of what maintenance needs
to be performed. To reset the PUMP MAINT indicator, use the keypad
display to enter the authorization code when prompted.
an individual motor is called on to start. If the starts per hour exceed
17.5, there is an increased risk of motor damage. The warning is
displayed, but the system is not shut down. The user can select a
wider operating pressure differential to reduce the starts per hour
or install a larger air receiver. The ACKN button, which will have to
be pressed for each motor in alert, allows the display to be shifted
back to SYSTEM STATUS or any other screen before the warning
automatically resets itself at the end of the hour. The RESET button
will not clear the warning.
The PLC control for the scroll enclosure compressor will display
1. High temperature at the sensor located at the after cooler
intake. Each compressor module has its own sensor. A high
temperature condition will result in the power to that motor
being shut off. The GENERAL FAULT alarm display will stay on
and the circuit will stay off even after the sensor cools, and
can only be restored when the alarm is cleared by a user. If
a high temperature condition occurs, the reason should be
determined and corrected before restarting the circuit as
unrepairable damage to the scroll pump may result from
operation with repeated high temperature alarms.
2. Motor Overload, if the current to the motor exceeds the setting
of the adjustable motor protector, the contactor associated
with that motor is de-energized, and that motor will not run.
The alarm display and condition is maintained until the alarm
is cleared and the motor protector reset. The circuit will be
restarted as needed. If a motor overload occurs, the root cause
should be determined and corrected or motor damage may
result.
The user can activate the acknowledge function (button labeled
The PUMP MAINT indicator will activate when the running hours of
Motor Warning: The control also tracks how many times per hour
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