Priming the Pump
Before priming the pump, or starting the pump, be sure that all suction and discharge lines are connected properly and that proper valves are open.
Prime mode can be started by pressing the Prime button. The pump will run at 100% speed for 60 seconds. The pump can be stopped at any time by pressing the Stop key.
Remote Start/Stop
If the A4 (Legacy) pump has been programmed for Remote Start/Stop feature, press the Start button to put the pump into Ready mode. (When in Remote Mode, the display will show “REMOTE” in the bottom right corner.) The pump will run if receiving a signal (depending on how the Contact Closure is programmed.) If the pump is waiting for a signal to run, it will be in “STANDBY” state. The display change color and will read “STANDBY” if waiting for a signal from the user-provided control system. Once a signal is received, the pump will start/run.
Manual Speed Adjust
The initial/default mode of the pump will be “Manual Speed Adjust.” Verify that you are in Manual Mode by noting the operating mode at the top of the screen. Adjust pump speed by pressing the Up and Down arrow keys. Pump speed can also be adjusted by pressing and holding the Mode button. Then set the pump for a specific speed. Press and hold Mode button to return to operation.
Note: Press and Hold Mode button while in any operating mode will take you directly to the setting screen for that mode. Adjust settings and Save, and/or press and hold Mode button again to return to normal operation.
Other Operating Modes
To run the A4 (Legacy) pump in other operating modes (4-20mA, 0 – 10 VDC, Frequency, Pulse Input, Manual Cycle Adjust, Dispensing, Manual Dosing, Proportional Dosing), press and release Mode button until the desired mode is displayed on the top of the screen.
Tube Failure Detection (TFD) and Tube Information
The A4 (Legacy) 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 TFD alarm occurs, the pump will stop, close an alarm output, and the screen will flash with a red alarm. If the system has detected a 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. See video on proper tube replacement.
At any time, tube hours can be accessed by pressing the Enter and Down Arrow buttons at the same time.
FAQs
Frequently Asked Questions
A4 (Legacy) Operation
- Can a pressure switch be used with this pump?
Yes, a pressure switch can be used to open or close any number of electrical circuits of the pump. For one example, a pressure switch can be used to stop or start the pump by opening or closing the remote start/stop contact closure circuit protecting the pump from excessive pressure conditions.
What is a pressure switch?A pressure switch is a type of electrical switch that is designed to respond to changes in fluid pressure. It is commonly used in various applications to monitor and control the pressure of gases or liquids. When the pressure exceeds or falls below a predetermined set point, the switch activates or deactivates an electrical circuit, triggering the operation or shutdown of a connected device or system.
How do I increase pump output?For increased Max Feed Rate, there are a couple of options available. Firstly, replacing the pump tube and utilizing a compatible roller assembly that ensures proper alignment can lead to improved results. Additionally, another approach is to reduce the suction lift of the pump itself. This will also increase the out capacity of the pump. For more specific information and details, please get in touch with our customer service.
How do I trigger a dispense event? Can i remotely trigger the pump to dispense?The Dispense mode in the A4/A4S operates as a local mode, which does not respond to pulses for activation. Instead, it requires manual initiation by pressing the start button on the pump. On the other hand, the Pulse batch mode enables pulse acceptance and counting for batch dispensing. It allows the user to input a specific pulse count, and once that count is reached, the A4/A4S will dispense the predetermined amount of chemical programmed in the pump.
Can I stop the prime cycle before the 60 second time is up?Yes. Pressing the stop button will stop the prime cycle.
