Eaton Small External Battery Cabinet (EBC-S)and Large External Battery Cabinet (EBC-L) User’s and Installation Guide© Eaton Corporation plc 2015. All rights reserved. Revision: 002 Document ID: P-164000504 13 (37)the minimum air flow per battery cabinet is 3.8 m 3 /hour and theminimum free area of opening for inlet and outlet is 108 cm 2 whennatural ventilation is used.NOTE: For more information about the battery room ventilationrequirements, including the calculation of the necessary air flow, see:IEC 62485-2: Safety requirements for secondary batteries and batteryinstallations.2.5 Symbols on the UPS and accessoriesThe following are examples of symbols used on the UPS or itsaccessories. The symbols are used to alert you of important information.RISK OF ELECTRIC SHOCKIndicates that a risk of electric shock is present and theassociated warning should be observed.CAUTION: REFER TO OPERATOR'S MANUALRefer to your operator's manual for additional information,such as important operating and maintenance instructions.This symbol indicates that you may not discard the UPS orthe UPS batteries in the trash. This product involvessealed, lead-acid batteries and they must be disposed ofproperly. For more information, contact your localrecycling / reuse or hazardous waste center.This symbol indicates that you must not discard wasteelectrical or electronic equipment (WEEE) in the trash. Forproper disposal, contact your local recycling / reuse orhazardous waste center.