page 20 — st3020b1/bCUL sUb. pUmp • operation and parts manUaL — rev. #2 (10/28/10)
OperatiOn
Control box installation
The following procedure outlines the steps for connecting
the pump to a control box.
Control box mounting
Mount the control box in an
upright vertical position
.
Make sure the control box is securely fastened to a flat
surface, that is free of dust, dirt, moisture or any elements
that may contaminate or erode the electronic components
of the control box.
danger
The ST3020B1 and SB3020BCUL
submersible pumps are also designed
to work with a control box. This control
box contains the necessary electronics
(float switch connections) to operate the
pump. Remember this control box contains hazardous
voltages. Disconnect all sources of power before
installing or servicing. There exists the possibility of
electrocution, electric shock or burn, which can cause
severe bodily harm or even
death!
danger
When installing the control box, the
possibility exists of electrical shock,
electrocution and possibly death!
never
have untrained personnel perform the
installation.
aLWaYs
have qualified
service personnel (licensed electrician) perform the
installation.
Warning
Explosion or Fire Hazard exists if this pump
is used with flammable liquids.
do
not
use
this pump with
flammable liquids
.
do not
install this pump in hazardous locations as
defined by the National Electrical Code,
ANSI/NFPA 70.
single-phase power installation (input)
The ST3020B1/BCUL submersible pump requires 1Ø, 230
VAC, 60 Hz, power for normal operation.
If you cannot determine what your pump's power
requirements are, look at the vendor supplied identification
name tag attached to the pump or contact Multiquip's
service department.
power Cord requirements
When routing the 230 VAC, 60 Hz., single phase power via
a power cord to the control box,
aLWaYs
use the correct
wire size. Please refer to Table 4 to determine the correct
wire size. Incorrect wire size can adversely affect the
performance of the pump and may ultimately burn-out the
pump motor.
NOTICE
Applying incorrect power (voltage or voltage phase)
to the submersible pump can cause severe damage
to the pump motor. Please make sure that the correct
voltage and phase are connected to the pump motor
at all times.
Table 4. Power Cord Length
and Wire Size
AMPS
50 Ft.
(15.24 m)
100 Ft.
(30.48 m)
150 Ft.
(45.72 m)
6
16 AWG
16 AWG
14 AWG
8
16 AWG
14 AWG
12 AWG
10
16 AWG
14 AWG
12 AWG
12
14 AWG
14 AWG
12 AWG
14
14 AWG
12 AWG
10 AWG
16
12 AWG
12 AWG
10 AWG
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