Gorman-Rupp Pumps S3B65-E6 460/3 861279 thru 1217130 - Manual (Page 16)

OM−04151 S SERIES PUMPS
PAGE B − 10 INSTALLATION
Pump Dimensions
For the approximate physical dimensions of your
pump, refer to the pump specification data sheet
or contact your Gorman-Rupp distributor or the
Gorman-Rupp Company.
PUMP INSTALLATION
When installing or servicing the pump
or controls, follow all requirements for
the installation of wiring or electrical
equipment as outlined in the National
Electric Code. Follow all safety require-
ments. Failure to observe these require-
ments could result in injury or death to
personnel.
Do not allow the free end of the power
cable to enter the liquid being pumped.
The free end of the cable must be kept dry
to prevent liquid from wicking through the
cable and into the motor.
NOTE
Refer to the performance curve in the Parts List
Manual when determining the most efficient piping
installation. The recommended maximum sub-
mergence depth is 65 feet.
Lifting
Use lifting equipment with a capacity of at least
five times the weight of the pump, including the
weight of the cable, if applicable, and any options
or customer-installed accessories. Discharge hose
or piping must be removed before attempting to lift
the pump.
Refer to Table B−2 for the approximate maximum
weight for each pump.
Do not attempt to lift the pump by the
motor power cable or the piping. Attach
proper lifting equipment to the lifting
device fitted to the pump. If chains or
cable are wrapped around the pump to
lift it, make certain that they are posi-
tioned so as not to damage the pump,
and so that the load will be balanced.
Positioning the Pump
NOTE
Before installing and operating the pump, check
the direction of impeller rotation to ensure that the
pump is properly wired at the control box. See IM-
PELLER ROTATION, Section C.
The pump is designed to operate fully or partially
submerged. The rotating parts are oil lubricated,
and the motor is cooled by a constant flow of liquid
or air discharged through internal passages.
As a safeguard against rupture or explosion due to
heat, models equipped with oil-lubricated motors
are fitted with a pressure relief valve which will open
if vapor pressure within the pump motor reaches a
critical point.
The pump will operate if positioned on its side, but
this is not recommended because the motor
torque could cause the pump to roll during opera-
tion.
The pump should be independently secured and
supported by the lifting device fitted on the pump.
If the application involves a lot of debris, protect the
pump from excessive wear and clogging by sus-
pending it in a perforated barrel or culvert pipe. If
the bottom is heavily sludge-covered, rest the
pump on support blocks or suspend it from a raft
or similar device near the surface of the liquid. See
Figure B−1 for typical pump installations.
All liquid entering the pump must pass through a
strainer screen. Any spherical solids which pass
through the screen will pass through the pump.