I have a cistern tank in the attic which is fed from a big powerful pump down in the well. The pump is controlled from a float switch on top of the cistern. The float switch seems to control the pump via a relay.
I am concerned about tank overflows. I have recently had a cistern tank overflow in my rain water system and it was not pleasant, believe me.
I have fitted a nice fat overflow to both cisterns, but on testing it still does not carry the water away as fast as the pump can pump it up from the well.
I am thinking of fitting a side mount float level switch as a fail-safe, to shut off the pump if the water reaches a certain level. I am thinking of getting one of these http://www.ebay.co.uk/itm/Liquid-PP...al_Components_Supplies_ET&hash=item3f2b3f2568 and connecting it in series with the Stuart float switch.
Only thing is I'm concerned about voltages. The spec for the side sensor reads...
The float switch is one of these
http://www.stuart-turner.co.uk/media/70542-Accessories-Float-Switch-Datasheet.pdf
So, is this a sensible plan, or am I likely to cause a electrical/water fire disaster?
I am concerned about tank overflows. I have recently had a cistern tank overflow in my rain water system and it was not pleasant, believe me.
I have fitted a nice fat overflow to both cisterns, but on testing it still does not carry the water away as fast as the pump can pump it up from the well.
I am thinking of fitting a side mount float level switch as a fail-safe, to shut off the pump if the water reaches a certain level. I am thinking of getting one of these http://www.ebay.co.uk/itm/Liquid-PP...al_Components_Supplies_ET&hash=item3f2b3f2568 and connecting it in series with the Stuart float switch.
Only thing is I'm concerned about voltages. The spec for the side sensor reads...
Contract rating(Max):50W
Switching voltage(Max):220VDC
Switching current(Max):1.5A
Breakdown voltage(Max):300VDC
Carry current(Max):3.0A
Contract resistance(Max):100 OHM
Temperature rating: -20 ~ +80 C
Material: PP
The float switch is one of these
http://www.stuart-turner.co.uk/media/70542-Accessories-Float-Switch-Datasheet.pdf
So, is this a sensible plan, or am I likely to cause a electrical/water fire disaster?
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