SERVICE MANUAL ENGLISHRazor Blade 26D / 28D / 28C 909 6510 000(3)2007-12 33RECOVERY WATER SYSTEMVACUUM SYSTEM MOTOR FILTER CLEANING (starting from S/N ..........)Disassembly and cleaningDrive the machine to the appointed disposal area, and empty the recovery water tank (58) with the hose (22).Empty the solution tank (59) with the tap (36).Drive the machine on a level floor.Turn the ignition key (12) to "0".Disconnect the vacuum hose (23) from the squeegee (24).Carefully lift the tank assembly (60).Remove the vacuum system motor filter (D) and clean it with water and compressed air.Install the filter (D).Carefully lower the tank assembly (60).VACUUM SYSTEM MOTOR ELECTRICAL INPUT CHECK (starting from S/N ..........)WARNING!This procedure must be performed by qualified personnel only.Drive the machine to the appointed disposal area, and empty the recovery water tank (58) with the hose (22).Empty the solution tank (59) with the tap (36).Drive the machine on a level floor.Turn the ignition key (12) to "0".Carefully lift the tank assembly (60).Apply the amperometric pliers (A) on one cable (B) of the vacuum system motor (C).Turn the ignition key (12) to "I".Turn on the vacuum system motor by pressing the switch (6) and check that the motor electrical input is 16 - 19 A at 24 V.Turn off the vacuum system motor by pressing the switch (6). Turn the ignition key (12) to "0" and remove the amperometricpliers (A). If the electrical input exceeds the specifications, check the motor carbon brushes (see the procedure in the relevantparagraph). If necessary, disassemble the vacuum system motor (see the procedure in the relevant paragraph), and check thecondition of its moving parts. If the above-mentioned procedures do not lead to a correct electrical input, the motor must bereplaced (see the procedure in the relevant paragraph).Carefully lower the tank assembly (60).S301336A1.2.3.4.5.6.7.8.9.1.2.3.4.5.6.7.8.9.