Coolants Troubleshooting Guide

Select The Current Problem:

Foaming	Residue In Machine
Odor	Rusting
Poor Tool Life	Skin Irritation

Foaming

Causes:	Solutions:
Concentration too high / low	Adjust concentration to specification
Machine cleaner in sump	Check pH - drain re-charge if necessary
Mechanical - lines on suction side leaking cracks in hose, loose fittings, impeller cavitation	Repair or replace hose, check pump for hair-line cracks and fix or replace if necessary
Soft Water	Sample water, treat if necessary
Pump pressure too high	Regulate as needed
High tramp oil content	Skim off oil. Check for leaking lines
Fluid level too high / too low	Adjust fluid levels

Odor

Causes:	Solutions:
Low Concentration	Adjust concentration to specifications
Low pH	Check pH, contact AFT
High tramp oil content	Skim off tramp oil
Contamination	Find contamination source
Pump pressure too high	Drain sump. Purge solids, sludge or swarf. Put back old coolant and adjust concentration.  Recharge with fresh coolant if necessary.
Bacteria, fungus	Treat with bactericide, fungicide. Drain, clean and recharge. Contact AFT

Poor Tool Life

Causes:	Solutions:
Concentration too low	Adjust concentration to specification
Wrong product being used	Contact AFT
High tramp oil content	Skim off tramp oil
High solids content	Filter coolant

Residue In Machine

Causes:	Solutions:
High concentration	Adjust concentration to specifications
High tramp oil content	Skim off tramp oil
Incorrect mixing	Add concentrate to water. Never add straight concentrate to sump. Mix thoroughly.
Hard Water	Treat water. Install R.O. or D.I. System.
Heavy misting	Check ventilation system. Adjust coolant nozzles. Increas coolant flow.

Rusting

Causes:	Solutions:
Concentratoin too low	Adjust concentration to specification
Poor mixing (soluble oils)	Add concentrate to water. Never add straight concentrate to sump.
High concentration of dissolved solids in solution	Add concentrate to water. Never add straight concentrate to sump.
Galvanic reaction from dissimilar metals	Clean chips from sump.  Drain and recharge sump if necessary. Drain and recharge sump if necessary.  Keep coolant filtered.
Evaporative cooler	Divert air flow away from machine
Fluid contamination	Check contamination sources

Skin Irritation

Causes:	Solutions:
High concentration	Adjust concentration to specification
High pH	Check pH, Contact AFT
High tramp oil content	Skim off tramp oil
Dirty shop clothes	Use clean, chip-free shop clothes
Contamination	Find contamination source and correct
Allergies	See doctor