DANGERDo not open any other screws in the unit than those holding the cover platesof the MiniSlots and the MBS locking plate. Failure to recognize the electricalhazards can prove fatal.CAUTIONThe 30–50 kW models are available as a C2 category UPS as an option,which can be placed both in residential and commercial or industrialenvironments. When included in a residential environment, this product maycause radio interference. in which case you may have to take preventivemeasures.By standard, this is a C3 category product for commercial and industrialapplication in the second environment. Installation restrictions ormeasurements may be needed to prevent disturbances.2.4 EnvironmentThe UPS must be installed according to the recommendations in this document.Never install the UPS in an airtight room, in the presence of flammable gases, orin an environment exceeding the specifications.Excessive amount of dust in the operating environment of the UPS may causedamage or lead to malfunction. Always protect the UPS from the outsideweather and sunshine.WARNINGDuring charge, float charge, heavy discharge, and overcharge, hydrogen andoxygen gases are emitted from lead-acid and NiCd batteries into thesurrounding atmosphere. Explosive gas mixture may be created if thehydrogen concentration exceeds 4% by volume in air. Ensure the necessaryair flow rate for the ventilation of the UPS location.2.5 Symbols on the UPS and accessoriesThe following are examples of symbols used on the UPS or its accessories. Thesymbols are used to alert you of important information.RISK OF ELECTRIC SHOCKIndicates that a risk of electric shock is present and the associatedwarning should be observed.Eaton 93PM UPS 30–200 kVA User's and installation guide© Eaton Corporation plc 2017. All rights reserved. Revision: 005 Document ID: P-164000249 13 (126)