Crane ELRO IP 100, Installation And Operation Manual

Page: 43 / 44

43
Peristaltic Pumps Series IP 100-800
Fault Possible cause Remedy
Pump loses suction abilities Leaks in suction line Find and seal leaks
Suction lift too high or air Increase suction pressure,
or gas in fluid degas fluid
Pump worn Examine, if necessary replace parts
Speed too low Increase speed
Pump runs very loud Cavitation Increase suction pressure
Pump worn or defective Examine, if necessary replace
defective parts
Air or gas in fluid Degas fluid
Solids in fluid Install a dirt trap in the suction line
Drive heats up or is A certain heating of electric Check the current
overloaded motors is normal consumption to be sure
Discharge pressure too high Reduce the pressure, check the
pressure gauge
Fluid of higher viscosity than Install a stronger motor
expected when designed
Speed too high Reduce the speed
Pump parts seized or sticking Examine and change pumping
conditions
Motor incorrectly connected Check connection and change,
if necessary