It was reported that the device cannot be used normally caused by a faulty front-end filter of the negative pressure pump.Reportedly the issue could be solved by the hospital engineer, no dräger service involved.It can be assumed that the inlet filter at the vacuum pump was occluded.After replacement of the filter the device was fully functional again.Dräger concludes the following: the auxiliary vacuum pressure is needed to operate the valves that control the ventilation cycles and to keep the ventilator diaphragm in place during piston movement.If the vacuum pressure is out of range the system reacts with a shutdown of automatic ventilation and generation of a corresponding alarm since a dislocated or wrinkled piston diaphragm may cause significant mechanical damages to the ventilator unit; impairment of valve actuation may cause insufficient ventilation.In this case the device allows manual ventilation including gas dosage; the monitoring functions remain unaffected.The workstation is subject to routine service and maintenance activities on a regular base.Dräger has defined service parts that shall be replaced in specified intervals and has put these together in service kits for the annual, 2 year, 3 year and 6 year maintenance.The bacteria filter for the vacuum pump is included in the service kit for the annual preventive parts exchange.H3 other text : device not available for investigation, 3rd party service.
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