Franklin Electric 2HP 20GPM 4400 Serie Manuel Du Propriétaire page 5

8. A three-wire, single-phase pump requires a motor
control box incorporating overload relays. Fig. 3 shows
a typical wiring diagram for a three-wire, single-
phase installation. Note that a magnetic contactor
must be used if the pressure switch electrical rating
is not sufficient to handle the submersible motor
electrical rating. The pressure switch would then be
incorporated into a pilot circuit to control the magnetic
contactor. Make the connections at the control box in
accordance with the wiring diagram in the control box
to avoid damage to the motor.
FIGURE 3 - 3-WIRE, 1-Phase, 1/2 thru 3 HP
Pump Wiring Diagram
Pressure Switch (for pilot circuit)
If Magnetic Contactor is used
for starting.
Circuit Breaker
or Fused Disconnect Switch
Incoming 1 Phase Power
Switch or Timer (for direct switching) OR
Magnetic Contactor (w/ pilot circuit)
Note: Order of red, yellow and black may
vary from control box to control box.
Always connect like colors.
Single-Phase
Control Box
L1 L2 R Y B
Red
Yellow
Black
1-Phase Sumbersible Motor
9. A three-phase pump does not require a motor control
box . Fig. 4 shows a typical wiring diagram for a 3-
wire, three-phase installation. A magnetic contractor
with 3-leg protection having quick-trip ambient
compensated overload relays must be used.
FIGURE 4 - 3-Wire, 3-Phase, 1-1/2 thru 50 HP
Pump Wiring Diagram
Circuit Breaker OR
Fused Disconnect Switch
Incoming 3-Phase Power
10. Use an ohmeter to make continuity and insulation
checks after the installation is completed.
11. Place the additional motor label with the pump label
and place both in the disconnect switch or circuit
breaker box for future reference.
WELL TEST
Check the pump and well performance before making
the final connection to the discharge system.
1. Install a gate valve on the end of the pipe. Partially
open the valve.
2. Start the pump.
3. Open valve gradually to give full flow.
4. If the discharge is not clear, let the pump run until
water clears. If water does not clear in 30 minutes,
stop the pump and take the necessary steps to correct
the condition. After the water has appeared clear,
check for sand by discharging into a clean bucket or
suitable container.
5. Close valve until maximum required system flow
rate is obtained (this should correspond to the cut-
in pressure of the pressure switch). Ensure that
the output of the pump at this setting is not greater
than the yield of the well. This can be checked by
monitoring the well drawdown level and ensuring
that the level is stable at the maximum required
system flow rate.
C A U T I O N
Never run pump unless it is completely
submerged in water. If run without water, the pump
and motor could be damaged. Note also that air
drawn into the pump can cause an airlock under
certain conditions.
Pressure Switch
Magnetic Contactor w/
3-leg protection having
quick-trip ambient
conpensated overload relays
3-Phase Submersible Motor
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