The broken on/off switch knob was replaced and the unit was returned to clinical use.Investigations that has been performed on broken suction unit on/off switch knobs, show a mechanical stress in the plastic part.To prevent this from occurring the suction unit on/off switch knob has been improved.The material in the suction unit on/off switch knob has been changed to metal.The improved suction unit on/off switch knob was introduced in production line of new units in april of 2022.The suction unit on/off switch knob on anesthesia systems in the field will be replaced according to the field action z-1278-2022, z-1279-202.
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