EATON BladeUPS® Maintenance Bypass Module User's Guide 164201785 Rev 1 www.eaton.com/powerquality 3Chapter 2 Safety WarningsIMPORTANT SAFETY INSTRUCTIONSSAVE THESE INSTRUCTIONSThis manual contains important instructions that you should follow during installation and maintenance ofthe Maintenance Bypass Module (MBM). Please read all instructions before operating the equipment andsave this manual for future reference.D A N G E RThis MBM contains LETHAL VOLTAGES. All repairs and service should be performed by AUTHORIZEDSERVICE PERSONNEL ONLY. There are NO USER SERVICEABLE PARTS inside the MBM.W A R N I N G The UPS connected to this MBM contains its own energy source (batteries). The MBM output may carrylive voltage even when the UPS is not connected to an AC supply. To reduce the risk of fire or electric shock, install this MBM in a temperature and humidity controlled,indoor environment, free of conductive contaminants. Ambient temperature must not exceed40°C (104°F). Do not operate near water or excessive humidity (95% maximum). To reduce the risk of fire, connect only to a circuit provided with branch circuit overcurrent protection inaccordance with the National Electrical Code, ANSI/NFPA 70. To comply with international standards and wiring regulations, the sum of the leakage current of theMBM and the total equipment connected to the output of this MBM must not have an earth leakagecurrent greater than 3.5 milliamperes.