is received and conditioned by the solution level sensor signal conditioning circuit 592 the output of the solution level sensor signal conditioning circuit 592 is a digital pulse that is sent to the system control circuit 588 that digital pulse initiates an output signal q from the system control circuit 588 to the peps control circuit 580 thereby energizing the pump 586 and the electrolysis power supply 584 the reset signal from the solenoid timer circuit 594 is provided to insure that the electrolysis and drain functions are mutually exclusive the system is now in the operational mode rather than the standby mode the pump 586 and electrolysis power supply 584 are now on and the solenoid valve 596 is closed de energized when the electrolysis power supply 584 is energized the electrolysis voltage is also introduced into the electrolysis voltage signal conditioning circuit 582 the output of electrolysis voltage signal conditioning circuit 582 is monitored by the inverting input of the comparator circuitry 598 if the metal containing solution has a high metal content it will be characterized by a high conductivity and the voltage drop across the anode 600 and cathode 602 will be small when compared with the reference voltage appearing at the non inverting input of the comparator circuit 598 when an enabling signal is received from the system control circuit 588 the comparator circuit 598 is allowed to respond to its input signals but at this point nothing else happens during electrolysis metal ions are reduced to their metallic form at the cathode causing.