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Float switch Float switch for fountains |
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Float switches , although in essence a float switch is a simple device can save you money, by stopping your fountain pump, should the sump run dry, or below pumping height.
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| Why have a float switch? For example if you have a " top hat" sump and it runs 24/7 unless you constantly watch it / top it up, due to evaporation you could loose all the water you could end up with a burnt out pump. In the case of fountains, you should use wind controls, but if you haven't and the wind blows too much water spray out you can also end up with a burnt out pump, a float switch is a small price to pay compared to that of a new pump. It is also possible to use this switch to operate an electric fountain fill valve on / off because this switch has change over contacts, so instead of cutting off the supply when the float is down, it could be used to turn on an electric fill valve. Please note: If doing this we suggest the float switch is mounted away from the fill valve as water turbulence may keep operating the switch. Ideally a delay timer (not supplied) should be used. How it works Operation is simple, once connected the float switch sits on the water surface (cable fixed to side of tank / reservoir) as the water level decreases the float switch changes position from horizontal to vertical, just before it reaches vertical it operates and stops the pump. (by adjusting the amount of "slack cable" to the float switch determines when it will operate When the water level is restored the float switch "resets it self" and the pump can run once more NOTES: In order for the float switch to work, it must be able to tilt up and down on the water surface. (no obstructions) Its connections must be made in a suitable enclosure. (To stop them getting wet) Ours comes complete with 10 metres of cable. Connections Connection is simple, the float switch is connected in series with the supply to your existing pump. Connection Colours Brown = Common Black = Normally closed* Blue = Normally open* *Normal being the float is horizontal floating on the water Specifications: Its dimensions are: Length 10cm Width 8cm Depth 4cm Switching capacity 10 amps 230v ac Max Cable length 10 M Please also note: The cable length really is 10 Metres Electrical index is here This page is dedicated to Bob T
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