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Good Practice
NOTE: These are general guidelines and do not cover all possible situations.
It is the responsibility of the system integrator to apply this product properly.
Plumbing
1. The inlet pipe should be as short and straight as possible to minimize
suction pressure losses. Excessive restrictions at the inlet can cause
cavitation resulting in poor performance, noise, vibration, or pump
damage.
2. Slope the inlet plumbing appropriately to avoid air pockets.
3. Plumbing weight, misalignment with the ports or thermal expansion can
exert excessive force on the pump. Plumbing must be properly
supported and aligned with expansion joints, if required, to minimize
these forces.
4. To prevent over pressure situations, install a relief valve as close to the
pump outlet as possible. Install the relief valve before any shut-off
valves.
Separate Pump and Drive Assemblies
Driveline Guards
1. Assure adequate guards have been installed to prevent personnel
contacting moving components.
2. Follow all OSHA, Federal, state and local codes.
Check Alignment of Pump to Driveline
Excessive misalignment can overload the pump input shaft and cause
premature failure. The figures below show parallel and angular
misalignments.
Parallel Angular
Mounting Base
1. Mount the unit on a rigid, heavy base to provide support and absorb
shock. Bases should be designed for high rigidity, not just strength.
2. The pump feet were not designed for mounting to concrete and do not
have enough contact area to prevent concrete from failing. When
mounting to cement or concrete, use a steel base plate to distribute the
mounting stress over an area large enough to prevent the cement from
failing. The base plate should be at least as thick as the pump feet.
Grout it in place.
Roper Pumps’ Close Coupled Drives
Hydraulic or Gearmotor units where the drive mounts directly to the pump
Driveline is not exposed and does not require guards.
Alignment between pump and drive line is maintained by the assembly.
Because the assembly absorbs reaction forces of the driveline, the
mounting base does not need to be as robust. The level of rigidity and
strength is determined by the piping stresses from the system.
Over-pressure may burst
pump or system components.
Always include a relief valve
in installation. Do not over
pressurize pump or block
dischar
e line while runnin
.
Injection Hazard: Do not try to
stop a leak with your hand!
Avoid any close contact with
hydraulic fluid jets. Escaping
fluid can penetrate skin, causing
serious injury. In case of
accident, see a doctor
immediatel
for removal of fluid.
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