Gorman-Rupp Pumps 3D-B 883512 and up - Manual (Page 13)

OM−01490 D SERIES
OPERATION PAGE C − 1
OPERATION − SECTION C
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and
decals attached to the pump.
This pump is designed to handle non-
volatile non-flammable liquids contain-
ing specified entrained solids. Do not
attempt to pump volatile, corrosive, or
flammable liquids which may damage
the pump or endanger personnel as a
result of pump failure.
After the pump has been installed, block
the wheels and secure the pump to pre-
vent creeping. Make certain that the
pump and all piping or hose connec-
tions are tight, properly supported and
secure before operation.
Pump application will affect its performance, espe-
cially discharge velocities. Consult the Gorman-
Rupp factory for actual performance levels for the
pump.
Install the pump and piping as described in IN-
STALLATION. Make sure that the piping connec-
tions are tight, and that the pump is securely
mounted. Check that components are properly lu-
bricated (see LUBRICATION in MAINTENANCE
AND REPAIR).
Make certain that any positive shut-off
valve installed in the suction line is open
before operating the pump; excessive re-
striction will cause incomplete filling of the
diaphragm chamber and result in short-
ened diaphragm life. No positive shut-off
valve should be installed in the discharge
line.
STARTING
Consult the operations manual furnished with the
motor before starting the pump. Open any valves
installed in the suction line and start the pump.
Rotation
The correct direction of rotation is indicated by an
arrow on the gearbox accompanying decals. If the
pump is operated in the wrong direction, pump
components may be seriously damaged or de-
stroyed since the integral check valves permit flow
in only one direction.
The pump must be operated in the direc-
tion indicated by the arrow on the gearbox
and on the accompanying decals. Reverse
rotation could cause pump components to
be destroyed.
If an electric motor is used to drive the pump, re-
move V-belts, couplings, or otherwise disconnect
the pump from the motor before checking motor
rotation. Operate the motor independently while
observing the direction of the motor shaft, or cool-
ing fan.
If rotation is incorrect on a three-phase motor, have
a qualified electrician interchange any two of the
three phase wires to change direction. If rotation is
incorrect on a single-phase motor, consult the liter-
ature supplied with the motor for specific instruc-
tions.
OPERATION
The pump is designed to operate at ap-
proximately 60 cycles per minute through