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Troubleshooting Metalworking Fluids
Problems and Solutions
SUMP OR TANK CONDITIONS  
LEGEND OF CAUSES
 
Concentration Low or High
Water Hardness Low or High
pH Low
Poor Tramp Oil Removal
Poor Chip Filtration
Over-Aeration
High Pressure or Temperature
Grease Formations
Add softener agent, or consider RO water
Filter metals down to 10µ
   
Foam
Add hardener agent
Decrease aeration
Decrease pressure
Gummy Residues
Decrease concentration
Add softener agent, or consider RO water
   
Split Emulsion
Add softener agent, or consider RO water
Filter metals down to 10µ
   
Emulsified Oils
Remove tramp oils
Filter metals down to 10µ
   
HEALTH & SAFETY
Odor
See "Bacterial Contamination" below
   
   
Skin Sensitivity
Decrease concentration
See "Bacterial Contamination" below
Remove tramp oils
Excessive Mist
Remove tramp oils
   
   
PARTS & TOOLS
Rust/Corrosion
Add softener agent, or consider RO water
See "Bacterial Contamination" below
   
Tool Breakage
Increase concentration
   
   
Poor Finishes
Increase concentration
Filter metals down to 10µ
   
Bacterial Contamination (if you're experiencing this follow these steps - visit www.CoolantMaintenance.com for more information):
Remove surface slime and correct concentration
Skim oils and circulate sump when idle
Use odor control tablets or decrease biocide dose while increasing frequency
Clean machine (until rinse bath is pH of 7) before recharge
 
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