¶ Recirculation Pump Operation
Recirculation Pumps are designed for low-pressure systems, primarily used in Omnia for water feature applications where the goal is to move a high volume of water with minimal head pressure. To achieve optimal efficiency, properly configuring the Low Pressure Delay and Recirc Pressure Settings is essential. These settings ensure the recirculation pump operates effectively for your specific application.
¶ Recirculation Pump Settings
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¶ Overview
If the station includes a Recirculation Pump, access its settings via the Main Screen (Image 1.1). The Recirc Pump Settings screen (Image 1.2) allows adjustments to optimize the pump’s operation. Before making changes, confirm whether the recirculation pump is equipped with a Variable Frequency Drive (VFD), as this impacts the available settings and configuration.
At the top of the screen (Image 1.3), the Motor Hours display shows the total runtime of the recirculation pump’s motor in hours. When commissioning the pump station on-site, press the Reset Hours button to set the motor timer to zero and update the Since date to the current date, starting the runtime tracking for the motor. If the motor is replaced, press the Reset Hours button after installing the new motor to reset the timer and update the Since date, restarting the hours cycle for the new motor.
¶ Virtual TOA
In the bottom left corner of the Recirc Pump Settings screen (Image 1.2), the Virtual TOA (Test, Off, Auto) controls the operation of the recirculation pump (Image 1.4). The modes are as follows:
- TEST: Operates the pump in manual (hand) mode, allowing direct control.
- OFF: Turns the pump off completely.
- AUTO: Runs the pump according to the programmed automation settings.
When operating the pump in Test (manual) mode, ensure that personnel are present to monitor the station at all times. Failure to do so could result in severe damage to the pump, motor, or station, and will void all warranties.
The Status Bar below the TOA indicates the current state of the motor, which may include: STOPPED, STARTED, RUNNING, FAULTED, IDLE, RESTART DELAY, or SCHEDULER.
¶ Remote mode and Scheduler
The operation of the water feature, including when it runs or stops, is fully customizable based on the end user’s preferences. Omnia provides two methods to control the water feature’s operation:
- Internal Scheduler (Image 1.9): Allows the end user to program specific run times directly within the Omnia system.
- External Scheduler via Remote Mode (Image 2.0): Enables control through an external scheduling system, allowing remote activation of the pump.
Whether or not a scheduler is present at the site, Omnia ensures the flexibility to run the recirculation pump whenever the end user requires.
¶ Remote Mode
To access the Remote Mode Settings, navigate to the remote mode settings screen (Image 2.1). When Remote Mode is Enabled (Image 2.2), the recirculation pump waits for a start signal from an external controller (Image 2.3). Upon receiving the signal, the station activates the pump (Image 2.4). In this mode, the pump’s operation relies entirely on the external scheduler’s start command.
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¶ Scheduler
Omnia has a built in scheduler that allows for utilizing the stations calendar and clock to run the pump station when needed, or when remote signal is unavailable. See Scheduler Section to learn how the scheduler works, and how to customize it to work for the pump station's application.
Note: Remote mode and the scheduler can work simultaneously. If remote mode signal is high and the scheduler is not ready to start the pump station, it will wait till the scheduler is ready, then the pumps selected will start. Opposingly, if the scheduler is ready and remote mode is not receiving the signal yet, it will wait for the remote start signal before the station will start up.
¶ Low Pressure delay
If the Recirc PSI Transmitter detects a low pressure condition, the PLC will initiate the Low Pressure Delay timer (Image 2.5). The recirculation pump will only fault for low pressure if the condition persists for the entire duration of this delay.
¶ Restart Delay
When the recirculation pump is placed in Test Mode, a Restart Delay timer is activated before the program signals the station to start the pump (Images 2.6 & 2.7). Since recirculation pumps are designed for low Total Dynamic Head (TDH), restarting them while water is rushing back can cause undue stress and potential damage to the motor, pump, and motor starting components. The restart delay allows the water to settle, ensuring a smoother and safer startup.
The Bypass Button (Image 2.8) allows you to override the restart delay, enabling the recirculation pump to start immediately. Use this feature cautiously to avoid potential damage.
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¶ Recirc Sensors
¶ Other Pumps
Needing to view other pumps, click from the list below: