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Service Manual: SC750, SC800, SC 750 ST, SC800 ST
Form Number 56043150 Page 131
machine has the oponal detergent mixing system, the Main Machine Controller also operates the addional detergent
pump. The two wires for the pump are wired directly to the Main Machine Controller. The Main Machine Controller sup-
plies baery posive on one wire and baery negave on the other for a short period of me to stroke the piston in one
direcon. It then immediately reverses polarity and does it again to stroke the piston back in the other direcon.
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