Cycling Shurflo Smart Sensor pump
Our Smart Sensor water pump, #4900-0201, cycles briefly every 30 seconds or so. It is a short burst each time, approximately 1 second. I assume there is some grit in one of the valves or something s...
Forum Discussion
Old-Biscuit wrote:
In-line check valve on ump discharge will NOT stop pump from short cycling.
Pump pressure switch on pump senses discharge pressure. If pump internal check valve (on pumps that have one) is leaking, discharge pressure will still drop causing pump to come on and build pressure back up to shut-off set point.
The in-line will stop city water from flowing backwards into fresh water tank and overfilling it.
In-line check valve in pump suction line stops both....back flow and pump short cycle IF internal check valve is actually leaking.
Ah, you are correct that it may not stop the pump from cycling as the pressure in the line between the pump and check valve could still drop if internal valve is bad but like you said it would prevent city water from flowing back into the fresh water tank.
