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PAGE 18 —ST2010 SERIES SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #3 (12/07/12)
CONNECTING AC POWER TO THE CONTROL BOX
1. The AC power cord (input) should have three wires.
Each wire is color coded. The colors are WHITE,
BLACK and GREEN.
2. Remove the AC input connector housing from the
control box, then route the power cord through the
cable gland on the control box.
3. Connect the AC power cord to the contactor as shown
in Figure 7 and Table 6.
4. Tighten the connector housing to ensure a tight fit
between the power cord and the connector body. This
will prevent the cable from pulling out of the terminal
block and also prevent moisture from entering the
control box.
5. Connect the other end of the AC power cord to the
voltage source. Remember to provide a means of
disconnecting the power from the control box (circuit
breaker or quick disconnect switch). Also make sure to
provide a good earth ground to the control box.
CONNECTING AC POWER TO THE PUMP
1. AC power is transferred to the pump via a contactor.
The coil of the contactor is energized or de-energized
by the opening and closing of the float switch contacts.
The power cord should have three wires. Each wire
is color coded. The colors are WHITE, BLACK and
GREEN.
Table 6. AC Input Power Connections
to Contactor
Float Switch Terminal Block Number
BLACK L1
WHITE L2
GREEN GROUND
NOTICE
It is recommended that the power being supplied to the
control box always be connected to a circuit breaker
or a quick disconnect switch. This safety feature allows
for quick removal of power from the control box in the
event of an emergency.
CONTROL BOX INSTALLATION
2. Remove the pump AC input connector housing from
the control box, then route the power cord through the
cable gland on the control box.
3. Connect the pump power cord to the contactor as
shown in Figure 7 and Table 7.
TURNING ON THE PUMP
1. If all of the pump's electrical requirements have been
met, place the circuit breaker or power ON/OFF switch
in the ON position.
2. The CB3 control box has an operation switch located
on the front cover. This switch has 3 positions; AUTO,
MANUAL and OFF. The AUTO position allows the
pump to run in an unattended mode. The MANUAL
position will let the pump run without the float switches
controlling the pump. When in the manual mode, be
careful not to let the pump run dry. Severe damage to
the pump may occur if it is allowed to run dry.
3. Place the operation switch in the AUTO position. The
AC power indicator lamp should be lit (ON).
4. Wait a few seconds and water should begin to flow
from the discharge hose.
5. If water is not flowing from the discharge hose or not
flowing freely after a few minutes, remove the power
from the pump and check the system for leaks.
6. To stop the pump from pumping, place the operation
switch in the OFF position.
Table 7. AC Output Power Connections
to Pump
Cable Wire Color Contactor
BLACK T1
WHITE T2
GREEN GROUND
NOTICE
Electrical connections to the power source should only
be performed by a licensed electrician or qualified
personnel.