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External dosing devices18.2 Electrical connectionIMPORTANT maximum current drain at the transfer strip: 0.5 A.‣ Connect the external dosing device to the 5-pin plug.Terminals (arranged from top to bottom)Terminal Voltage is on Condition RestrictionL1continuous voltageNRinse (O18)parallel to solenoid valve (O7)P709 = 0 while the machine is fillinga) during rinsingc)Wash (O20) while the circulating pump is running a) c), d), e)while the machine is fillingP704 = 0a), b)Fill / Water(O17)parallel to solenoid valve (O7) while the machine is filling during rinsinga) Hood / door closedb) minimum water level in the tankc) not in the self-cleaning programmed) not while the machine is fillinge) not in descaling or basic cleaning programmeP704 = 1a), b)The parameters P704 and P709 control when a voltage present at the fill and rinse terminals.Possible settingsP704 Use0 for dosing devices not originating from Winterhalter1 for dosing devices not originating from Winterhalter2 for Winterhalter dosing device SP 166 Z3 for pulse controlled dosing device (e.g. Winterhalter Fluidos DT)P709 Use0 for dosing devices not originating from Winterhalter1 not used2 for pulse controlled dosing device (e.g. Winterhalter Fluidos DB)RecommendationsWinterhalter dosing device SP 166Z: P704 = 2 Set both potentiometers to zero Connect the black wire to Fill Set the dosing on the display (touchscreen)37