Multiquip Submersible Pump ST4125G - Manual (Page 21)

ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 21
OPERATION
1. When the electronic overload module detects an
overload condition, the pump will shut down. Check the
pump and correct the cause of ther overload.
2. Let the pump cool down, then press the RESET button
(see Figure 15) on the front of the control box to restore
power.
Figure 15. RESET Button
Shut-Down
1. Place the 3-position operation switch on the control
box to the OFF position (Figure 16).
Figure 16. Manual-Off-Auto SW.
(OFF Position)
2. Verify that the control box power ON light is OFF.
3. Turn the circuit breaker or quick disconnect switch to
the OFF position.
4. Using a suitable lifting device, lift the pump up from
its current position and place on a secure fl at surface.
5. Remove the discharge hose from the discharge port
on the pump.
6. Remove all power cables and fl oat switches from
the control box. Place cables and fl oat switches in a
suitable container where they will not get damaged.
7. If the pump was used to pump mud, grit or silt, fl ush
vigorously with clean water.
8. Wipe off any mud or debris that might have attached
itself to the pump.
9. Store pump in a clean dry place away from dirt and
debris.
1. From the voltage source, set the circuit breaker or quick
disconnect switch to the ON position.
2. For manual operation of the pump, place the 3-position
operation switch (Figure 12) on the control box in the
MANUAL position.
Figure 12. Manual-Off-Auto SW.
(Manual Position)
3. Verify that the ON indicator (Figure 13) on the control
box is LIT. This means that power is being supplied to
the control box.
Figure 13. Control Box Power ON Indicator
4. In the manual mode the pump will run continuously. Pay
close attention when running the pump in this mode.
DAMAGE to the pump may occur if pump is not fully
immersed in water.
Control Box Operation (Auto Mode)
1. To operate the pump automatically (fl oat switches),
place the 3-position operation switch in the AUTO
position (Figure 14).
Figure 14. Manual-Off-Auto SW.
(Auto Position)
2. In the AUTO mode the pump will run as long as there
is a suffi cient amount of water. This amount of water
is determined by the setting of the fl oat switches. The
stop fl oat switch contacts will open when the water
level is low and power will be removed from the pump's
electric motor.
Once the water level has risen back to the appropriate
level the start fl oat switch contacts will close and power
will be restored to the pump's motor.
Reset Button