EN | 8 | ACX150/250 | Layout of the manual© MAHLE The content of this manual hasbeen drawn up in compliancewith the guide lines of the UNIstandard 10893:2000. Diffusion, modification or use ofthis manual for own aims isforbidden. The manual uses symbols whichcall the reader's attention tospecific points to facilitate itsuse. It includes all technical,operating, shutdown,maintenance, spare parts andsafety information. In case of doubts on the correctinterpretation of the instructions,please contact our technicalservice to obtain the requiredclarifications.Operations which arepotentially hazardous for theoperator are highlighted withthis symbol.Such operations can causeserious injury.Operations requiring specialattention are highlighted withthis symbol.Such operations shall becarried out correctly to avoidcausing damage to objects orto the surroundingenvironment. This symbol alsohighlights information to whichspecial attention must be paid. Operations which requirecareful reading of the manual'sinstructions are highlightedwith this symbol.4.2 SymbolsThis paragraph describes the safetysymbols which may be posted on theservice equipment.4.2.1 SafetyALTERNATINGCURRENTSAFETY GROUNDINGCONSULT THEINSTRUCTIONSMANUALATTENTION!ELECTROCUTIONHAZARDCAUTION !: DO NOTREMOVE THE COVER(maintenancetechnicians only)USE PROTECTIVEGLOVESWEAR PROTECTIVEGOGGLESUSE ANTI-SMASHSAFETY SHOES4.3 GlossaryTo make the reading of this manualeasier, we have prepared the list of themost important technical terms used inthe manual.Refrigerant: Refrigerant fluid used inadvanced motor vehicle A/C systems.The following refrigerant fluidsmay be used: R-1234yf CH2CFCF3 2,3,3,3-Tetrafluoropropene. R-134a C2H2F4 - 1,1,1,2-