VARISCO J2 180 - Page 24

Foreign matter in the impeller
Disassemble pump casing and
remove foreign matter
Pump vibrates and is
noisy
Pump is operating with a flow rate
that is too low
Check settings of the valves in the
system and readings on the pressure
and vacuum gauges
Pump or pipework is not fixed
securely
Make sure system pipework is
correctly fastened
Pump cavitates
Reduce suction lift
Foreign matter in the impeller
Disassemble pump casing and
remove foreign matter
Pump jams etc. for
damage
Mechanical trouble
Check shaft, couplings, motor,
pulleys and belts, gearboxes
Foreign matter in the impeller
Inspect impeller, disassembling the
pump casing
Bearings do not last
Lack of lubrication
Lubricate bearings
Foreign matter in bearings
Replace bearings
Bearings are rusted
Replace bearings
Seal leaks
1-2 seal
This type of seal is suitable for
pumping dirty liquids or liquids
containing abrasive particles and
petroleum products with
temperatures up to 110°C: check
level of grease in lubricator at regular
intervals. If the pump leaks during
operation, the seal must be replaced