[. . . ] *The use of the HEPA-filter when picking up hazardous materials has not been evaluated by Underwriters Laboratories. *The use of this machine in conjunction with the pick-up of hazardous materials has not been investigated by UL. [. . . ] This machine is equipped with a specially designed cable, wich if damaged, must be replaced by a cable of the same type. These cables are avaliable at authorized service shops and must be installed by trained personnel. Applicable to machines with a three-pin plug This appliance must be grounded. If it should malfunction or breakdown, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. This appliance is equipped with a cord having an equipment-grounding conductor and grounding plug. The plug must be plugged into an appropriate outlet that is properly installed and grounded in accordance with all local codes and ordinances. To obtain consistent performance over the life of your vacuum, read through these instructions and keep them handy for future reference. If you require service, contact the dealer from whom the vacuum was purchased, or the local authorized Service Station. Always refer to your Service Station for complete service information, For prompt and complete service information, always refer to the model, type and serial number indicated on the rating plate. Improper connection of an equipmentgrounding conductor can result in risk of electric shock. Check with qualified electrician or service person if you are in doubt as to whether the outlet is properly grounded, Do not modify the plug provided with the appliance. If it will not fit the outlet, have proper outlet installed by a qualified technician. [. . . ] A chemical foam inhibitor is used to wet pick-up of lather building liquids. Switch the machine off at once if liquid /foam begins to force its way out from the top of the motor. [. . . ]