Gorman-Rupp Pumps S4A1-E25 460/3 1396155 and up - Manual (Page 11)

S SERIES PUMPS OM-06098
PAGE B - 3 INSTALLATION
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.
BY BAIL IN PERFORATED CULVERT PIPE ON SUPPORTS
Figure B-1 Typical Pump Installations
Piping
No suction piping is required in a standard installa­
tion.
These pumps are provided with a suction strainer
to prevent large solids from clogging the impeller.
If required, the strainer can be removed and the
pump suction “staged” to the discharge of another
pump, allowing one pump to feed the other on high
discharge head applications.
To determine the size of the discharge connection,
see Table B-1, Pump Specifications. Either
hose or rigid pipe may be used. To facilitate mobil­
ity and maintenance, it is recommended that the
discharge line be fitted with a quick disconnect fit­