71Maintenance and Care8. After finishing cleaning the tank,close the flap and push the run-offplate back in place.9. Unhook the waste water draininghose (Fig. 25/6), lower it slowly andopen the cap (Fig. 25/5).10.Run fresh water in the recovery tankthrough the open tank cap using awater hose (output pressure approx.5 to 6 bar) and, in doing so, alsoflushing the draining hose (seeabove).11.Screw the cap shut again and hookthe draining hose back in place.12.Close the left and right rear doors.The cleaning flap must not beused to drain off waste water.5.6.3 Cleaning the draining hosecap• Clean the draining hose cap on adaily basis.• Lubricate the O-ring lightly, if neces-sary.5.6.4 Cleaning the air intake filterThe filter sieve (Fig. 27/1) is located inthe recovery tank above the maximumwater level on the suction pipe. The ac-cumulation of dirt in the filter sieve mustbe checked daily and cleaned as nec-essary:Fig. 271. Pull the filter sieve from the suctionpipe and clean with water.Remove the filter sieve com-pletely to clean it.During cleaning and operation,pay attention that no water andno particles of dirt get into thesuction pipe and into the suc-tion turbines.2. Dry the filter sieve after cleaning. Donot replace when dripping wet!5.6.5 Cleaning the openings to thesolution tankThe openings between the recoveryand solution tank (Fig. 27/2) serve forventilation between the two tanks. Theymust be checked regularly for accumu-lations of dirt and cleaned as neces-sary.21