Multiquip Submersible Pump ST4125G - Manual (Page 15)

ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 15
CONTROL BOX INSTALLATION
Control Box Installation
The following procedure outlines the steps for connecting
the pump to a control box.
DANGER
The ST4125G and ST6125G submersible
pumps are designed to work with a control
box.This control box contains the necessary
electronics (fl oat 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 fl ammable liquids. DO NOT use
this pump with fl ammable liquids. DO NOT
install this pump in hazardous locations as
defi ned by the National Electrical Code,
ANSI/NFPA 70.
CONTROL BOX MOUNTING
Mount the control box in an upright vertical position. Make
sure the control box is securely fastened to a fl at 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-4125G/ST6125G submersible pumps require 230
or 460V 3-phase power for normal operation. Each pump
is shipped from the factory in the 230 VAC confi guration. To
change the voltage setting from 230 VAC to 460 VAC refer
to the 230/460 VAC voltage selection section (Figure 8).
If you cannot determine what your pump's power
requirements are, look at the vendor supplied identifi cation
name tag attached to the pump or please contact Multiquip's
Service/Technical Assistance department.
Power Cord Requirements
When routing the 230/460 VAC, 60 Hz., 3-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.
CAUTION
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 applied to the pump at all times.
Table 4. Power Cord Length
and Wire Size
AMPS
10 FT.
(3.0 m)
20 FT.
(6.0 m)
30 FT.
(9.1 m)
50 FT.
(15.2 m)
15 12 AWG 10 AWG 8 AWG 6 AWG
20 10 AWG 8 AWG 6 AWG 4 AWG
25 10 AWG 6 AWG 6 AWG 4 AWG
30 10 AWG 6 AWG 4 AWG 2 AWG
40 8 AWG 6 AWG 4 AWG 2 AWG