Leak & Flow

Dry-Run Guard (Flow)

Configure Dry-Run Guard (Flow) in HPzenAi Smart. Stops a pump when it is running without moving water.

What it does

Stop the pump when it moves no water.

Stops a pump when it is running without moving water. Use this automation when the selected field devices should work together without repeated manual setup.

CategoryLeak & Flow

Works with

Water MetersValvesMotor Controllers

Automation Logic

When

Trigger

Pump run state is active but measured flow stays below the safe flow threshold.

Default

No flow detected for 60 sec

Choices

No flow detected for30 sec60 sec120 secEnter value

Example: choose "No flow detected for" and keep the default 60 sec, select another preset, or enter another value.

If

Condition

The low-flow condition lasts longer than the configured delay.

Default

Pump is running

Choices

Pump is runningNo condition

Example: choose "Pump is running" for the default if behavior.

Then

Action

Stop the pump and send a dry-run alert.

Default

Stop the pump and alert me

Choices

Stop the pump and alert meStop the pumpOnly notify me

Example: choose "Stop the pump and alert me" for the default then behavior.

Active

Allowed Time

Use All day for pump protection.

Default

All day

Choices

All dayDay (6 AM - 6 PM)Night (6 PM - 6 AM)

Example: keep All day for protection workflows, or choose Day or Night when operation should stay inside site hours.

Automation Details

Recommended use

Pumps where a flow meter confirms whether water is actually moving.

Device Inputs

Water Meters, Valves, Motor Controllers

Output Behavior

Stop the pump and send a dry-run alert.

Safety Note

Allow enough start-up delay for the line to prime before tripping.

Test Method

Use a supervised low-flow test and confirm the pump stops after the delay.

Visual reference coming soon

Future screenshot area for the Dry-Run Guard (Flow) setup screen and saved Smart card.

Dry-Run Guard (Flow) Walkthrough

Walkthrough video coming soon

Before You Start

Device Readiness

Link every device used by this workflow and confirm each one is online.

Device Selection

Choose the exact tank, pump, valve, relay, or meter that should be controlled.

Safe Test

Test with safe thresholds or manual observation before leaving the workflow enabled.

Guided Setup

Set Up Dry-Run Guard (Flow)

Step 1 / 12

9:41

1

Open the HPzenAi app.

Step 1 / 12

Commissioning Checks

• Confirm the alert or shutoff action happens when flow becomes unsafe.
• Use a supervised low-flow test and confirm the pump stops after the delay.
• Confirm the saved card shows the correct workflow, devices, schedule, and enabled state.
• Review the event history after testing so the action is recorded as expected.
• Keep safety-critical workflows active all day unless the site needs a specific time window.

Troubleshooting

• If the Save button is disabled, complete every required trigger, condition, action, and timing field.
• If the workflow does not run, confirm the devices are online and the active time allows it to run now.
• If the action does not complete, check whether the target device is already in that state or cannot accept commands.
• If notification behavior is missing, confirm phone notification permission and recent device data.

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