Solution System99Service Manual – Scrubtec R 253 - RA40Draining the Chemical Mixing SystemClean the detergent tank as shown in the previous sectionTo remove residual detergent from the detergent hoses and pump, proceed as follows1 Turn the ignition key to “I”2 Press the One-Touch button Check that the detergent quantity indicatormax.2%C IL MKGA BFHDE42464344454748on the displayhas at least one segment lit3 Press the solution flow adjustment button and the detergent percentage adjustment buttontogether, until the screen appears on the display (after approximately 5 seconds)4 Release buttons and and wait for the countdown timer on the display to finish and thevacuum system to be activated5 Collect the detergent remained on the floor.6 Remove the operator key7 Lift the recovery tank assembly and the driver’s seat, then check that the detergent tank hose is empty,otherwise perform steps 2 to 6 againNote: The draining cycle lasts about 30 seconds, then the vacuum function automaticallyturns on, which allows to remove the detergent remained. The draining cycle can also beperformed with the detergent tank full of water, thus cleaning the system thoroughly. It isadvisable to perform this type of draining to clean the Chemical Mixing System from dirtand deposits if the machine has not been used/cleaned for a long time. The draining cyclecan also be performed to quickly fill the detergent supply hose when the tank is full butthe system is still empty. If necessary, the draining cycle can be performed several timesin succession.https://harrissupplyind.com - To Order Parts Call 608-268-8080