Make sure entering and leaving water pressures are determined with one gauge, moved back and forth between the two. And be aware that a restricted, or plugged, evaporator will increase the pressure drop, giving a false indication of flow that is higher than actual. This is where knowing the entering and leaving water temps would be helpful.
whats the formula for gpm. what should the gpm be. Circuit 2 runs for 3min and off on low evap alarm. circuit 1 is running now for the past 2 hrs but when makes temp will be off on same alarm I have 7 psi difference between supply and return,flow switch abviousky is made. suction rftg 58dg sat evap temp 54.7dg,evap psi 92 psi cond psi is 173psi, entering wtr temp 62 and leaving is 58.7 f, thats on circuit 1. Circuit 2 starts and suction drops way down right away and goes off low evap alarm.
Check the flow with ONE GAUGE!!! Use the search feature!!! How many times do we have to go over this?!?!
I did check with one guage. 7 psi difference.
Heres a novel idea ........................ Call a pro !!!!!!!!!!!!!!!!!!!
This seems more at home in Tech to tech chat.