Q: 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.
A:
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.
Q: We have a new system and just
installed the pump and its making a noisy sound, sort of like
its pumping sand.
A:
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.
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
1. Reduce the output by partially closing a valve on the
discharge, until you reach a point where the cavitation stops.
2. Increase the diameter of pipe on the suction of the pump.
3. Shorten the length of the pipe on the suction of the pump.
4. Reduce the numbers of elbows on the suction of the pump.
5. Lower the elevation of the pump.
Any one or combination of the above changes will help eliminate
cavitation.
Q:
Pump Loses Prime
1.
Defective check or foot valve.
3.
Inlet line air leakage.
2.
Seal leaking.
4.
Fluid supply low.
