Ingersoll Rand ARO Manual Del Usuario página 23

v. End of Stroke Sensor
The ARO Controller must receive the signal from an end of stroke sensor on the pump. This sensor indicates that
the stroke has completed.
Two types of end of stroke sensors are available: a pressure switch and a proximity switch.
Currently, the only ARO pump family that uses a proximity switch is the ¼" pump family (PE01). All other ARO
pumps use a pressure switch.
Select the correct choice on this screen, press ENTER.
To exit, press either "NAVIGATE TO PREVIOUS" or "NAVIGATE TO HOME".
The pressure switch must be adjusted before it can produce a reliable signal. To adjust the pressure switch:
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1. Connect the pump to a compressed air supply.
2. To decrease the setpoint rotate the set dial (2) all the way down. Make sure both dials rotate at the same time.
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3. Make sure both lights (3 and 6) illuminate.
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4. To increase the setpoint, rotate the reset dial (4) till the set light (6) is out. Make sure both dials rotate at the
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5. Decrease the setpoint again by rotating the set dial (2) until the set light (6) is on again
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6. Run the pump.
7. Make sure the set light (6) turns on and off regularly, but does not blink rapidly. If it does, decrease the setpoint
8. Lock the setting by rotating the locking ring (1).
vi. Alarms Functionality
The controller can react to five different external conditions, and inform the user that the particular condition has appeared.
Each of these alarm conditions can be configured to either only inform the user of its existence, or also stop the pump. Alarm conditions that
stop the pump are called critical alarms. When an alarm is triggered, the following occurs:
● The alarm present icon displays on the screen (see block 21 in the installation section).
● The controller's internal buzzer is triggered.
● The LED indicator for the corresponding pump blinks.
● The external alarm signal is triggered.
● The corresponding alarm will be listed on the "Active Alarms" screen.
● If the alarm is configured as critical, the pump will stop.
The five different alarm conditions are:
● Lost Prime: The pump has lost its prime, and does not pump fluid anymore.
● Leak Detect: Fluid has been detected in either of the two air chambers of the pump.
● Service Needed: The number of cycles programmed as the service interval (section 1.c.ii) for the pump has been reached.
● Signal Range: The analog input signal received falls outside the range programmed in (section 1.b.ii).
● Max Rate: The cycle or flow rate programmed for the pump cannot be maintained. This can be due to excessive back pressure, a cycle rate
in excess of the pump's capabilities, a high fluid viscosity that slows down its flow, or reduced air pressure , among other things.
On the Pump Setup menu, select "Alarm Setup".
To configure an alarm as critical,select the desired condition(s) and press ENTER. A check mark is displayed next to
the conditions under which the pump will stop.
Any and all alarms can be set/reset as critical, and the configuration can be different for each pump.
When an alarm is on, the alarm present icon is displayed (see block 21 in the installation section).
To determine which alarm has been triggered, on the home screen, select "Active Alarms" and press ENTER. The
Active Alarms screen is displayed.
The active alarms are displayed on this screen. The pump stops depending on which alarms have been selected
as critical (see section 1.c.vi).
To clear all alarms, select "Clear Alarms" and press ENTER. Any alarm whose trigger has not been cleared will still
remain though. Clearing individual alarms is not possible.
Notes:
When an alarm is triggered, its critical status cannot be changed. The alarm must be cleared first.
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same time.
slightly (2). The final pressure reading on both dials (5) should be about half the air pressure supplied.
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