VUKAR BOA-C single-phase water level controller starter panel with cable float switch — illustrative example

Tank Filling: Pump Timer or Water-Level Controller?

Mohit Vekaria

Do you want the pump to stop after a set time? Or should it stop when the tank is full? A pump timer does the first job. A water-level controller does the second. Choose the control that fits your task.

Timer or water-level control?
What you want Control to compare
Stop after a set time Auto-off Timer: stops by elapsed time.
Stop when the tank is full Water-level controller: stops from the supported full-tank signal.
Fill only during allowed hours A compatible complete panel with both Clock Timer and the required level inputs.

For allowed-hours filling, all conditions must agree

Tank needs waterThe destination tank calls for a fill.
Source has waterThe required source-water checks allow pumping.
Time is allowedThe Clock Timer is inside the permitted period.
Motor checks allow itThe configured Motor conditions permit a start.

Vukar Automation compares pump timers and level controllers for tank filling. Start with how you want the tank to fill and stop.

Why a timer may stop too soon or too late

Your tank may take an hour to fill today. It may need less time tomorrow. The starting water level and flow can change. A timer checks the time. It does not check how much water is in the tank.

A timed stop can still be useful. You check the water, then start the pump by hand. The timer stops it later. You do not need to come back just to switch it off.

How tank-level control works

A sensor checks the water level. A low tank calls for water. A full tank tells the pump to stop. The pump may start only when water and power are fit for use.

Check the water supply too. A sensor in the roof tank cannot check the ground tank. The chosen panel needs the right input to stop the pump when its water source is low.

Which starter panel fits?

A starter panel is the box that starts, stops and helps protect the motor. Choose a full panel that fits your pump. The pump type, power supply and motor rating must match. VUKAR has level-control panels for borewell, openwell and monoblock pumps. Use the panel guide to check the right model.

A timer-only panel, such as BOM, does not check tank level. A level display may only show how much water is left. Check that the chosen panel can start and stop the pump too.

What work can it save?

A working full-tank sensor can stop a late fill. This can reduce spills. A low-tank start can reduce trips to the switch. You still need water, good power and working sensors.

The same idea can help fill a farm tank. Water used for birds or other animals needs its own checks. A pump control does not make that water clean or safe to drink.

Check it before use

Ask the installer to check the motor and sensor wires. Test a low tank and a full tank. Test what happens after a power cut. Keep the panel and sensors easy to check.

If your panel already does the job well, you may not need a new one. If you only want a timed stop, ask whether a timer is enough.

When a building misses its water supply

In a tall building, the person who fills the tank may miss the water-supply time. The tank can then stay empty. Level control can help when the tank needs water and the source has water.

An empty roof tank and a pump running dry are two different problems. The first leaves people without stored water. The second means the pump has too little water to draw. That can harm the pump.

First check where the water comes from. Then check when it is there. The control must check both the source and the tank that needs filling. It cannot fill a tank after the water supply has gone.

Choose the panel for the pump, not just the building's height. Test the low-source stop and full-tank stop. Test the restart after a power cut too. Someone must still check faults.

Fill the tank only during allowed hours

You may want to avoid pump noise at night. The tank may need water then, but the pump must wait. For this job, use level control with a clock timer. The clock sets the hours when pumping is allowed.

The pump needs all the right conditions at once. The tank needs water. The source has water. The time is allowed. The motor checks allow a start. A full-tank signal still stops the fill.

What happens at the stop time?

VUKAR's allowed-hours mode stops the pump at the set end time. It stops even if the tank is not full. A low tank must wait for the next allowed period. Source and motor checks still apply.

Choose a complete panel with both a clock and the level control you need. Check the exact model with the pump details. A model name alone does not show that all the needed inputs are fitted.

Test four cases: a low tank at night, a low tank at start time, a full tank, and a power cut near stop time. In clock mode, a missed fill does not run later outside the allowed hours. A daily run-time mode uses a different rule.

Allowed hours can reduce night use. They cannot create water or make a short fill period longer. Check that the tank size and allowed pump time can meet your needs.

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1 comment

I want to consult fo4 water level indicator and other factors regarding water supply Managment

Dilip Srivastava

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