OPERATION
Electrical Connections
5
6. For 3-phase motors, install a separate manual thermal overload switch or a magnetic starter with
proper size heater elements.
• Failure to provide proper overload protection to the motor will void any warranty.
OPERATION
1. Prime the pump.
• Remove priming plug.
• Pour water into the priming port.
• Fill the pump and suction line with water.
• Rotate motor shaft to let air in casing escape.
• Refill at the priming port and replace priming plug.
2. If installing a 3-phase motor, check pump rotation by turning on power for a second.
• The impeller must rotate in a counterclockwise direction while facing the pump from the front of
the casing.
• If direction is wrong, interchange any two of three wires either at the motor or starter.
3. Start the pump.
4. Gradually open the discharge valve to the halfway point.
• If the pump does not deliver water within seconds, stop the motor and prime pump again.
• Several starting attempts may be necessary to expel all air from the pump and suction lines.
5. Once the pump is fully functioning, completely open the discharge valve and a system outlet.
Risk of severe injury or death by electrical shock, high temperatures,
or pressurized fluids.
• To reduce risk of electrical shock, disconnect power before working on or around the system.
• Do not continuously run pump against closed discharge. Release all system pressure before working on any com
-
ponent.
Risk of damage to pump or other equipment.
• Do not let the unit run dry (without liquid). It is designed to be cooled by pumping fluid. The seal may be dam
-
aged and the motor may fail if the pump is allowed to run dry.
