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Agitation and sumps

Agitation and sumps

Agitation and sumps

(OP)
Here is a good one.
Yesterday I was called up on to implement an agitation system inside a sump pit; purpose of which is to create a suspension before the heavy stuff is moved by the sump pump.

I opted to insert a perforated pipe into the pit whose water flow [agitiation]is controlled with a solenoid valve.
The philosophy is that when the control cct is completed the solenoid would kick in for say 20s after which the pump would start.

A simple exercise I thought..however, I was forced to use only {normally open time to close} and {normally closed time to open} relays. Anyway I ended up with 6 relays total for a simple delay.....

RE: Agitation and sumps


For standalone control with front-panel indication/adjustment, an old standby is an Eagle Signal HG-series  repeat-cycle timer.
  

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