Operation - Franklin Electric BT4 Series Owner's Manual

3. Install a proper fused disconnect switch in the line, making sure the correct gauge of cable is used to
carry the load.
IMPORTANT: Undersized wire between the motor and the power source will adversely limit the
starting and load carrying abilities of the motor.
4. Wire the motor according to the motor nameplate to achieve clockwise rotation when viewed from
the motor end.
• The power lines should be connected to the pressure switch terminals marked L1 and L2.
• Very long leads will require a larger cable.
• If needed, remove motor end compartment for viewing.
5. Make sure the insulated green or bare ground wire is securely connected to the green ground termi-
nal screw on the motor terminal board.
• For added safety, the pump and motor should be grounded to the well casing, if metal, or the
ground in the distribution panel.
6. If using a pressure switch to control the pump on- and off- cycling, ensure that it has a low-pressure
cutout feature to avoid damage to the pump.
7. 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.
• Single phase motors up to 2HP typically include thermal overload protection and are reversible.

OPERATION

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.
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.
• If applicable, use the pump rotation warning labels or arrows on the pump to serve as a guide.
• If direction is wrong, interchange any two of three wires either at the motor or starter.
3. Close all system outlets, then slightly open one system outlet, allowing excess air to bleed out of the
system.
4. Start the pump.
OPERATION
Electrical Connections
5