I just installed a new unit and when I turn it on, the motor makes a
funny sound and doesn't come up to speed properly.
Check to make sure that the supply voltage matches the voltage the
motor is set for. In other words, if your motor is wired according to
230 Volt connections, then your supply line must also be 230Volts.
If the motor connections are properly set, then you need to check the
actual voltage supplied at the motor. It is best to do this with the
motor, and any other lights or equipment that share that circuit,
running. Using a voltmeter, check the voltage across Line 1 and Line 2
leads. It should be with in 5% of the nominal 115 or 230V. It the
voltage is low, correct the problem before trying to operate the pump.
We have a new system and just installed the pump and its making a noisy
sound, sort of like its pumping sand.
With the pump running, slowly close down your valve on the discharge
side of the pump. If the noise goes away, then you were hearing
cavitation. Cavitation is caused when the pump isn't getting water
re-supplied quickly enough. To remedy this, you need to
Reduce the output by partially closing a valve on the discharge,
until you reach a point where the cavitation stops.
Increase the diameter of pipe on the suction of the pump.
Shorten the length of the pipe on the suction of the pump.
Reduce the numbers of elbows on the suction of the pump.
Lower the elevation of the pump.
Any one or combination of the above changes will help eliminate
cavitation.
The motor was accidentally flooded.
Shut off power to the motor.
Remove the pump end from the motor.
Clean the pump end as necessary to remove any mud or other debris.
Take the motor to an authorized repair shop for examination.
Phone: 303-883-8000