®

Automatic Water Manager is a water level controller; an automatic switch which operates according to the level of water in the overhead tank and in the source tank.

 

It is designed to work like a pump operator. It can be imagined that it is practically not possible for an operator to monitor all the parameters simultaneously. He would not stop the pump unless overhead tank overflows.

 

Automatic Water Manager is specially designed as an intelligent unit, which takes care of all the necessary work. It works like an intelligent operator on behalf of a human for below mentioned tasks.

• 1. Level of source tank for the sufficient level of water.

• 2. Level of overhead tank, to see whether filling the tank is required.

• 3. After starting the pump it checks whether water is being delivered to the overhead tank (A human can do it either by checking the sound of the pump or by feeling the vibrations of pipe or by actually going to see the delivery in the overhead tank.)

• 4. Monitors the level of source, so that it should not go below foot valve of the pump.

• 5. Monitors the level of overhead tank, so that it should not overflow.

​

Sensors:

Automatic Water Manager has two types of sensors:

1. Level sensor.

2. Flow sensor.

1. Level sensor: 

There are two level sensors; one for overhead and other for the sump. Each sensor consists of three hollow pipes for easy setting of the levels. These pipes are chromium plated in order to minimize the scaling and provide durability to sensors. These rods are fitted and enclosed in PVC caps and pipe and wired inside, thus making it a complete hanging assembly. This complete assembly can now be easily shifted and fitted as per customers' convenience. There are three levels of sensing and indication, namely low, mid and full. When water is in contact with low rod, it senses and indicates low level and also switches on the pump automatically. When water level starts rising, it comes in contact with mid rod, and further it touches the full rod and switches off the pump. This is happening when level of source is full. As the water in sump looses contact with full rod, it senses mid. Further, when water looses contact with mid rod, it senses low and switches off the pump. Thus, the pump starts only when the overhead tank is low AND the sump tank is full. The pump stops when EITHER overhead tank is full OR sump tank is low.

​

2. Flow sensors: 

These are the carbon electrodes fitted in the PVC pipe, which is of the size of the delivery pipe of the overhead tank, to sense the flow of water. Whenever water gets into the overhead tank it is sensed by these electrodes and the flow is indicated in the unit. This allows the pump to run according to levels sensed by level sensors. If water is not sensed after a specific time delay, the pump is switched off and the unit gives audio/visual alarm to indicate the no-flow condition. The specific time delay is already incorporated in the unit, taking into consideration the height and frictional losses. This can be changed as per on-site requirements.) These sensors are arms of Automatic Water Manager, taking feedback from which the microprocessor, which is the brain of Automatic Water Manager, decides the subsequent action to be taken after analyzing the feedback.

​

​

Features: 

Main unit has control transformer to step-down the AC supply to 12 VDC and 5 VDC, a relay-10 Amp, which switches the pump ON/OFF. It has the necessary circuit to sense the signals of the sensors. The level and sump sensors are linked to the unit by two-pair telephone cable. The relay contacts are connected in series with the phase (in case of single phase) or to the no-volt coil (in case of three-phase) of the starter.

 

Automatic Water Manager has eye-catching front display.

• It displays the three levels of overhead tank as well as sump tank.

• It displays the flow of water into the overhead tank.

• It displays the status of the pump (ON/OFF) incessantly.

• It also flashes the probable reasons in case of faulty condition.

• It gives audio alarm along with flashing the probable faults.

• It has Auto/Manual mode selection switch.

• It can get rid of human involvement in pump operation, thereby saving lot of time.

​

Models:

1. Regular: It operates the pump according to level of overhead tank only. It is best suited for sites where drying-out of source is a rare occurrence (where the water level of the source does not go below the foot valve of the pump).
Application: i. For the sump tanks, where water is ample.
                     ii. For bore-well or well where it is difficult to put sump sensors.

 

2. Executive: It operates the pump according to level of overhead tank as well as sump tank. It is best suited where full usage of limited source water has to be done to optimum storage capacity.

Application: It can be installed where level of overhead as well as sump tank has to be taken into consideration due to scarcity of water.

 

3. Supreme: Sometimes there are two sources fitted with two pumps having common delivery pipe and common overhead collection tank. Supreme model has sump / pump selection switch, which can be shifted to pump1 or pump2 as per requirement. It operates the pump to level of selected source and the overhead tank.
Application: It can be installed where two pumps of two separate sources are to be operated alternatively.

 

4. Reverse: It operates the pump according to level of sump tank or source only. It switches the pump on when sump is full and switches the pump off when sump level is low. 

​

​

The Controller:
The control circuit has one signal output (O/P) and five signal inputs (I/P). Each input is wired to timer IC and further to the optical isolators for electrical separation of signals from the micro-controller. Each input signal is sent further to micro-controller, which then processes the signals and works according to pre-programmed directions. The micro-controller controls the display indicators and the internal relay switching according to these directions. The pump operation is controlled by the relay.