SPXFLOW Universal 5000 Industrial Series, Instruction Manual

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14
95-03012
TROUBLESHOOTING
Problem Probable Causes Solutions
Noisy operation • Rotor to body contact
Distortion of pump due to Reassemble pump or re-install
improper piping installation. piping to assure free running
Pressure higher than rated Reduce pressure if possible
Worn bearing Rebuild with new bearings.
Lubricate regularly
Worn gears Rebuild with new gears. Lubricate
regularly
Rotor to rotor contact
Loose or mis-timed gears. twisted Rebuild with new parts
shaft, sheared keys. worn splines
• Relief valve chattering Re-adjust, repair or replace
• Drive component noise-gear Repair or replace drive train
trains, chains, couplings,
bearings.
Pump requires • Higher viscous losses than If within pump rating, increase drive
excessive power expected size
(overheats, stalls.
high current draw,
breakers trip)
• Higher pressure than Reduce pump speed, increase
expected line sizes
• Fluid characteristics
Fluid colder than expected. Heat fluid. insulate or heat trace
viscosity high lines. Use pump with more running
clearances.
Fluid sets up in line and pump Insulate or heat trace line.
during shut down Install "soft start" drive.
Install recirculating bypass system.
Flush with other fluid.
Fluid builds up on pump surfaces Use pump with more running
(example. latex, chocolate. clearance
fondants)
''Short'' pump High corrosion rate Upgrade material of pump
service life
Pumping abrasives Larger pumps at slower speeds,
can help
Speeds and pressures higher Reduce speeds and pressures by
than rated changes in system
Worn bearings and gears due to Set up and follow regular
lack of lubrication lubrication schedule
Misalignment of drive and piping. Check alignment of piping. Check
Excessive overhung load or drive alignment and loads. (Page 9)
misaligned couplings.