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PAGE 14 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08)
ST-4125D/ST-6125D — CONTROL BOX INSTALLATION
To place the ST-4125D/ST6125D
submersible pumps into operation
requires the use of a control box. The
control box contains the necessary
electronics (thermal overload module,
float switch connections and 230/460
voltage transformer) 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
!
This control box should only be installed or serviced by a
licensed electrician or qualified personnel.
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.
3-Phase Power Installation (Input)
The ST-4125D/ST6125D submersible pump requires 230/
460V 3-phase power for normal operation. The pump is shipped
from the factory in the 230 VAC configuration. To change the
voltage setting from 230 VAC to 460 VAC refer to the
230/460 VAC
Selection
section.
If you cannot determine what your pump's power
requirements are, look at the vendor supplied identification
name tag attached to the pump or please contact Multiquip's
Service/Technical Assistance department.
EZISERIWDNAHTGNELDROC.3ELBAT
S
SPMA.TF05.TF001.TF051
6GWA61GWA61GWA41
8GWA61GWA41GWA21
01GWA61GWA41GWA21
21GWA41GWA41GWA21
41GWA41GWA21GWA01
61GWA21GWA21GWA01
Applying incorrect power (
voltage phasing
) to the
submersible pump can cause severe damage to the pump.
Please make sure that the correct voltage and phase are
transferred to the pump at all times.
POWER CORD REQUIREMENTS
When routing the three phase power via a power cord to the
control box,
ALWAYS
use the correct wire size. Please reference
Table 3 below (Cord Length and Wire Size) to determine the
correct wire size. Incorrect wire size can adversely affect the
performance of the pump.
FLOAT SWITCH INSTALLATION
1. Remove the float switch input connector housing, then
route the float switch wires through the cable gland on the
control box. Attach the wires to the float switch terminal
block as indicated by Table 4. Refer to Figures 7 and 8.
SNOITCENNOCHCTIWSTAOLF.4ELBAT S
HCTIWSTAOLF
LANIMRETHCTIWSTAOLF
REBMUNKCOLB
TRATS2DNA1SLANIMRET
POTS4DNA3SLAN
IMRET
2. Tighten the connector housing to ensure a tight fit between
the 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.
3. Determine the length of the float switch wires, then secure
float switch wires to pump discharge hose.
DANGER - Hazardous VoltageDANGER - Hazardous Voltage
DANGER - Hazardous VoltageDANGER - Hazardous Voltage
DANGER - Hazardous Voltage
CAUTION - InstallationCAUTION - Installation
CAUTION - InstallationCAUTION - Installation
CAUTION - Installation
CAUTION - Voltage PhasingCAUTION - Voltage Phasing
CAUTION - Voltage PhasingCAUTION - Voltage Phasing
CAUTION - Voltage Phasing