6 FAULTS AND REMEDIES
Noise in the bearing
housing
Dusty, dirty or damaged
bearings
Replace the bearings
Rattle noise
chamber
Remove foreign body
Vibrations
Twisted shaft Replace the shaft
Faulty bearings Replace the bearings
Foreign body in working
chamber
Remove foreign body
Rotational speed exceeded Reduce the speed
Bearing housing hot
Faulty bearing housing Replace bearing housing
Damaged bearings Replace bearings
Wrong grease Use specified grease
Rotational speed exceeded Reduce the speed
Leakage of sealing liquid Mechanical seal damaged Replace mechanical seal
No throughput of prod-
uct
Air in working chamber
Remove air out of prod-
uct line
Viscosity of product too
high
Install a feed pump in
front of the
®
Display shows “CL”
Current Limit reached, Mo-
tor overload
Verify drive/motor are
proper size for applica-
tion
Display shows “FCL”
Fast Current Limit, Over-
load
Verify drive/motor are
proper size for applica-
tion