To meet the requirements of coloured bumper production it was necessary to double
the available supply of high purity water (0.5µS/cm). This was accomplished
by modifying the existing central deionisation plant.
The existing central deionisation plant produced two grades
of deionised water: 0.5µS/cm quality for phosphating
and 1µS/cm quality for the electrocoat paint system.
By integrating the two plants and adding an extra mixed bed
polishing unit to the system it was possible, at relatively
modest cost, to increase the total volume of deionised water
available and to upgrade all the water to 0.5µS/cm quality.
The increased volume met the increased production needs of
the coloured bumper line and also improved the quality of water
supplied to the electrocoat paint system with resultant improvements
in quality control