Goulds Pumps 3501 Mixer - IOM - Manual (Page 34)

30 3501 IOM 11/10
Table 6
TROUBLESHOOTING
Problem Probable Cause Remedy
Bearings run hot.
Improper alignment. Re-align mixer and driver.
Improper lubrication. Check lubricant for suitability and level.
Lube cooling. Check cooling system.
Mixer is noisy or vibrates.
Improper mixer/driver alignment. Align shafts.
Partly clogged rotor causing imbalance. Back-flush mixer to clean rotor.
Broken or bent rotor or shaft. Replace as required.
Foundation not rigid.
Tighten hold down bolts of mixer and motor or
adjust stilts.
Worn bearings. Replace.
Inlet or outlet piping not anchored or properly
supported. Anchor per Hydraulic Institute Standards
Manual recommendations
Mixer is cavitating.
Locate and correct system problem. May have
insufficient back pressure on mixer.
Excessive leakage from seal chamber.
Worn mechanical seal parts. Replace worn parts.
Overheating mechanical seal. Check lubrication and cooling lines.
Shaft sleeve scored. Remachine or replace as required.
Motor requires excessive power.
Liquid heavier than expected. Check specific gravity and viscosity.
Rotating parts bind.
Check internal wearing parts for proper
clearances.