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Pumping Terms

Using A Pump Curve

LogicFlow & LogicPress

Excluding VAT

 

Description

Logic is a series of electronic pressure switches that will control and protect an electric pump. They will start a pump immediately when a valve in the pipe system is opened and stop the pump immediately when the valve is closed. They maintain a constant system pressure, protect a pump from dry running and reduce the effects of water hammer. They are fitted with non-return valves and have a simple user interface for system status and re-set. They can be fitted to any surface mounted pump, or in the delivery line of any submersible, that operates within the rated pressure and flow and motor specifications. There are seven models in the range, which are manufactured by Trevitech of Italy, who also produce the Watertech models Presscontrol, Presscontrol TIME and Mascontrol. 

Logicpress

Logicpress features: 

Automatic reset function: pump protection from dry running but with automatic reset, enabling the pump to operate normally again during a condition where the lack of water may have only been temporary. In this situation, a conventional pressure controller would switch off and the system would require a manual reset, which could cause inconvenience. Both devices are designed to make 10 attempts to start over a 24 hour period. On the 10th attempt, if the condition still exists i.e. it is not temporary, it switches off. A system inspection and manual reset is then required. 

Daily pump test function: if for any reason the pump remains idle for 24 consecutive hours, both devices are designed to start up the pump for about 5 seconds. This helps to avoid various problems associated with pumps inactive for long periods. 

Dual voltage: It can be operated at 110 volts or 230 volts and with 400 volts 3 phase (with a contactor). 

 

Application conditions are: 

The column of water between the switch and the highest outlet must not exceed 15 metres (1.5bar) – the “restart pressure value setting” - otherwise the system pressure may not fall to the pre-set “cut in” pressure and the system will not restart. This value is pre-set at factory, so no additional programming is required, or possible, during installation. 

Minimum flow required inwards is 1 litre per minute. 

It must be operated vertically. 



Logicpress(M): this is the same product as the Logicpress, but with a factory fitted Manometer pressure gauge (M). 



Logicpress SET:this is the same as the Logicpress but with three pre-programmed restart pressure settings of 1.5, 2.0 and 2.5 bar, which can be programmed by the user. This feature enables the user to purchase one device for a range of duties. It must be operated vertically. Minimum flow required inwards is 1 litre per minute. Optional pressure gauge (M). 230v only, or 400v (with a contactor) 



Logicpress SET (M):this is the same product as the Logicpress(M), but with a factory fitted Manometer pressure gauge (M). 


Logicpress PLUS:this has the same features as the Logicpress, but is for higher flow rates and hence has a larger inlet and outlet. 


Logicpress 3PHASE PLUS:this has the same features as the Logicpress, but is specifically for 3 phase pumps (230v and 400v) that have higher flow rates and hence has a larger inlet and outlet. It has reverse rotation protection. 


Item CodeModelin/out (BSPM)Volt (v) amps maxmax flow rate (l/min)temp mx Cmaxx operating pressure (bar)pump start pressure(bar)WxLxH
20-40-1014Logicpress1"110 - 23020 - 1016665121.5140x190x110
20-40-1009Logicpress (M)1"110 - 23020 - 1016665121.5190x190x110
20-40-1011Logicpress SET1"2301016665121.5 - 2.0 - 2.5140x190x110
20-40-1005Logicpress SET (M)1"2301016665121.5 - 2.0 - 2.5190x190x110
20-40-1024Logicpress PLUS11/4"110 - 23016 - 1620065121.5211x251x175
20-40-1025Logicpress 3PHASE PLUS1 1/4"400620065121.5205x272x175

    Logicflow

    Logicflow: for surface mounted pumps only in applications of positive suction i.e. underneath a tank or direct withdrawal from the mains water supply. It will start a pump immediately when a valve in the pipe system is opened and stop the pump immediately when the valve is closed. It has integral dry running protection an external re-set switch, pump status LEDs, power black-out auto reset, dual voltage (110- 230v) and has IP65 protection. Minimum flow required inwards is 0.5 litres per minute. 

    Item CodeModelin/out (BSPM)Volt (v) amps maxmax flow rate (l/min)temp mx Cmaxx operating pressure (bar)pump start pressure(bar)WxLxH
    20-40-1004Logicflow1"110 - 23016 - 816665161.5130x75x100

      Manometer

      Manometer:this is a pressure gauge that can be retro-fitted to Logicpress and Logicpress SET. Models with this device, factory fitted, have suffix “(M)” 

      Item CodeModelin/out (BSPM)Volt (v) amps maxmax flow rate (l/min)temp mx Cmaxx operating pressure (bar)pump start pressure(bar)WxLxH
      20-40-1023Manometer50x35x45

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