OWNER’S MANUALHANDLER AERO SERIESMODEL 42ESUEXTRAORAL SUCTION UNITFor Your Own Safety Please read this Manual before operating your Handler 42ESU. Always wear eye protection while using power tools. NEVER use this product to pick up flammable liquids or any liquids and do not use nearflammable or combustible liquids as fire or explosion can occur. ALWAYS operate the 42ESU with filters properly in place and inspected for any damages.Debris can cause inhalation problems. ALWAYS disconnect the 42ESU from a power source when removing or replacing filter bagsor doing any sort of maintenance.