At 3,450 rpm, 2100 watts suggests a flow of about 50 gpm and about 90 feet of head loss. If the pressure gauge is reading 10 psi, that's about 23 feet of head loss leaving the rest for the suction side, which is not possible without cavitation.
Something is off. The vacuum gauge can help diagnosis the problem. The vacuum gauge in the link will work. There might not be enough clearance for the gauge to screw in directly. You might need to rig a bit of tubing to get a reading.
There is a sticker on the pump strainer housing. What pump model number does it show?
Something is off. The vacuum gauge can help diagnosis the problem. The vacuum gauge in the link will work. There might not be enough clearance for the gauge to screw in directly. You might need to rig a bit of tubing to get a reading.
There is a sticker on the pump strainer housing. What pump model number does it show?