This clip shows the WD 425 Flow Monitoring System.

After use, the endoscope channels are contaminated with blood and residue. Water, augmented with detergents and disinfecants, is pumped through the channels to clean them.

A monitoring system, triggered by pressure-activated switches mounted on the sidewall of the wash chamber, enables the WD 425 to ensure that water pressure to the channels has been maintained throughout all phases of the wash cycle.

For simplicity, the clip shows a simple start and stop cycle of the pump. The full wash process runs through a series of wash-and-rinse cycles in which precise mixtures of detergent and disinfection agents are added to the water.

A heating system heats and regulates the washing and rinsing solutions at precise temperature levels.

The chart below shows a typical reprocessing cycle. The white line shows the rise and fall in the temperature of the washing solutions. Column-widths show the duration of the washing, rinsing and drying operations. Space between columns shows the heating and cooling periods.

The WD 425 features programs for washing specific makes and types of endoscope.