Gorman-Rupp Pumps 3D-E1.5 1P 883504 and up - Manual (Page 13)

OM-03604 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.
OPERATION
The pump is designed to operate at ap­
proximately 60 cycles per minute through
a gearbox with a 30.36:1 ratio at a maxi­
mum input speed of 1800 RPM. Make cer­
tain that the electric motor installed does
not exceed this RPM. Operation at higher
RPM can cause pump components to be
damaged or destroyed.
Priming
The pump may not prime immediately because the
suction line must first fill with liquid. If the pump fails
to prime within five minutes, stop the engine and
check the suction line for leaks.
OPERATION CHECKS
Gearbox Check
Check that the gearbox is properly lubricated (see
LUBRICATION in MAINTENANCE AND RE­
PAIR).