I got a pump system consists of 0.75HP self priming pump connected to the water mains , pressure tank with air pressure set to 30psi and a SquareD pressure switch .
I set the pressure switch to a 40/60 psi setting .
I discovered that during taking a shower with the shower tap open full throttle is not enough to keep the pump running under 60psi so the pressure can still build up and reach 60 psi and then the pump stops then after few seconds switches on again ( obviously when the pressure reachs 40psi) . That resulted in substantial cange of the hot to cold water mixture during te shower and then rounds of hot or cold water during showerng which is very annoying
I tried to adjust the cut out pressure to make it 70psi (( which is higher than the pressure of the pump with the shower fauset running) but I discovered that the relevant nut ( the small one) would affect the cut in pressure too!!!))
The question now :
1) Do these pressure switches normally have max and min limits?
2) Is it normally possible to set the pressure differential to say 10psi or 5 PSI or there is a commoon value of 20PSI
I tried to set that switch to 70/60 PSI to kep the pump running during the shower or 60/50 PSI to avoid big pressure changes but it did not work!
Any ideas?
Thanks very much in advance
I set the pressure switch to a 40/60 psi setting .
I discovered that during taking a shower with the shower tap open full throttle is not enough to keep the pump running under 60psi so the pressure can still build up and reach 60 psi and then the pump stops then after few seconds switches on again ( obviously when the pressure reachs 40psi) . That resulted in substantial cange of the hot to cold water mixture during te shower and then rounds of hot or cold water during showerng which is very annoying
I tried to adjust the cut out pressure to make it 70psi (( which is higher than the pressure of the pump with the shower fauset running) but I discovered that the relevant nut ( the small one) would affect the cut in pressure too!!!))
The question now :
1) Do these pressure switches normally have max and min limits?
2) Is it normally possible to set the pressure differential to say 10psi or 5 PSI or there is a commoon value of 20PSI
I tried to set that switch to 70/60 PSI to kep the pump running during the shower or 60/50 PSI to avoid big pressure changes but it did not work!
Any ideas?
Thanks very much in advance