The converter is cooled with closed circuit deionised water system. Keeping the value of conductivity of deionised water under 1 µS, corrosions caused by ionisation is avoided. Also in case of the ionisation resin is contaminated when the conductivity increases over 5 µS, "Electronic Water Conductivity Measurement System" gives signal to warn the Operator, If deioniser is not changed within acceptable duration (approximately one week) after getting the warning signal, the PLC locks the system to avoid further corrosions.

The converter is cooled by the furnace cooling water via a plate type water to water heat exchanger. Besides, for the countries where the humidity and environment temperature is very high, chiller type compressed gas coolers are used to reduce those values down to normal climate conditions.