A1
Operation
This section applies to A1 pumps produced after 1/5/2026. For A1 pumps produced before this date, go to the A1 Legacy Help Center pages.
Priming the Pump
Before priming or starting the pump, be sure that all suction and discharge lines are connected properly and that the proper valves are open.
Pressing the Prime key will start the pump at 100% speed and run it for 60 seconds. The pump can be stopped at any time by pressing the Start/Stop key. All 60 seconds may not be required to prime the pump. Conversely, if additional priming is necessary, the Prime key can be pressed again.
If the pump does not prime, check the suction line for clogs, obstructions, or leaks. Make sure all appropriate valves are open.
Manual Operation
“B” Base Model
The pump can only be run manually. Press the Start/Stop key to run the pump. Use the Up and Down arrows to adjust flow.
“C” Control Model
To run the pump in Manual Mode, ensure the “Manual Adjust – Local” light is on, or press the “Manual Adjust” key to activate (the “Local” light will turn on).
Press the Start/Stop key to start the pump running. Adjust pump speed by pressing the Up and Down arrow keys on the touchpad. To stop the pump, press the Start/Stop key.
If using the pump in Remote Start/Stop Mode, press the Start/Stop key to put the pump in “Ready – Standby” state. The display will read “SBY” while waiting for a signal from the user-provided control system. Once a signal is received, the pump will start. Adjust pump speed manually by pressing the Up and Down arrow keys on the touchpad.
4-20mA Input Speed Control Mode – “C” Control Model Only
To run the pump in 4-20mA Mode, press the “4-20mA Input” key to activate (the “Remote” light will turn on). Press the Start/Stop key to start the pump running. Pump speed will be set by the remote 4-20mA input signal. To stop the pump, press the Start/Stop key.
If using the pump in Remote Start/Stop Mode, press the Start/Stop key to put the pump in “Ready – Standby” state. The display will read “SBY” while waiting for a signal from the user-provided control system. Once a signal is received, the pump will start. The pump speed will adjust via the 4-20mA input signal.
To see the actual 4-20mA input signal value, press the “Display” button in the upper left of the touchpad.
Calibration
To ensure the most accurate pumping, a pump calibration is recommended prior to operating the pump. The A1 pump flow rate will vary depending on the suction line conditions. Calibrate the pump with actual suction line conditions.
To calibrate the pump:
- Connect tubing and open valves on the suction side of the pump to represent actual suction line conditions.
- Set up the discharge and open the discharge valves to dispense into a calibration column/cylinder.
- Prime the pump so that the calibration column begins to fill. Stop the pump and note the solution level in the calibration column.
- Run the pump at a set speed for 1 minute.
- Record the flow difference in the calibration cylinder.
- Calculate the flow rate by dividing the flow by the time. For example, if the pump runs for 1 minute and the flow difference is 30 mL, divide 30 mL by 1 minute. The flow rate is 30 mL/min.
- For best accuracy, run more than one calibration to check results, or run another calibration at a different pump speed.
Calibration results should be similar to the flow rating for the pump tube, but can vary depending on chemical composition, suction lift, viscosity, temperature, and other conditions.
Tube Failure Detection (TFD+)
The A1 pump is equipped with leak detection located inside the pump head. If a tube fails or leaks for any reason, the chemical will trigger the sensor, stop the pump, and activate an alarm.
If a TFD+ alarm occurs, the pump will stop, close an alarm output, and the screen will flash “TFD+” with an alarm icon. If the system has detected chemical, the pump tube must be replaced, and the pump head and roller must be thoroughly cleaned.
Remove the front cover to replace the tube and roller. Failure to clean the pump head properly will void the warranty.
