Gorman-Rupp Pumps S3B65-E6 460/3 861279 thru 1217130 - Manual (Page 18)

OM−04151 S SERIES PUMPS
PAGE B − 12 INSTALLATION
Control Box Installation
The pump is designed to be operated
through the control box furnished with
the pump. The control box provides
overload protection and power control.
Do not connect the pump motor directly
to the incoming power lines.
The control box is a rainproof enclosure with a pad-
lockable front cover. The enclosure is not de-
signed to be watertight, and should not be sub-
merged. Refer to the control box manual for enclo-
sure dimensions and parts.
Secure the control vertically on a level surface,
above flood level. The box should be easily acces-
sible to the operator, and located close enough to
the pump to avoid excessive voltage drop due to
cable length (see Pump Power Cable Connec-
tion). After the box is installed, make certain the
front cover latches properly.
Failure to mount the control box vertically
on a level surface may affect operation of
the pump controls.
Dual Voltage Usage
Some pumps are powered by a dual-voltage motor
for utilization with high or low voltage. The motor
was originally wired and shipped from the factory
for use with the voltage indicated as Factory
Wired" on the pump’s name plate. The name plate
also indicates the dual voltage pertaining to this
motor. If the alternate voltage must be utilized, con-
trol box modifications and/or certain wiring
changes are required.
The control box assembly provided with this pump
has been designed to accommodate only the volt-
age indicated on the front of the box. This voltage
coincides with the Factory Wired" voltage of the
motor. If the alternate voltage is utilized, the control
box must be replaced with another box designed
for the appropriate voltage. Alternate voltage con-
trol boxes are shown in the Parts List Manual under
Pump Options.
Dual voltage pumps are wired at the fac-
tory only for the voltage shown on the
name plate. Make certain that the con-
trol box voltage matches the pump volt-
age before using. If the pump voltage is
changed, the pump name plate must be
changed and a new control box must be
installed. Do not run the pump if the volt-
ages do not match; otherwise, the pump
warranty will be negated, and damage
to the pump, and injury or death to per-
sonnel can result.
The motor wiring must also be changed before uti-
lizing alternate voltage. For detailed instructions on
disassembly and reassembly of the terminal hous-
ing, see Terminal Housing and Power Cable Dis-
assembly and Terminal Housing and Power
Cable Reassembly in the Maintenance And Re-
pair manual. Change the motor leads as indicated
on the wiring diagram plate affixed to the side of the
terminal housing (see Figure B−2). Be sure to tag
the revised voltage on the pump.
LOW VOLTAGE HIGH VOLTAGE
1 2 3
7 8 9
4 5 6 4 5 6
7 8 9
1 2 3
Field Wiring Connections (Incoming Power)
The electrical power used to operate
this pump is high enough to cause inju-
ry or death. Obtain the services of a
qualified electrician to make all electri-