Nilfisk Scrubber BA 531D

Machine driven to the appointed disposal area and recovery water tank emptied

Machine placed on a hoisting system or level floor

Drive system motor cleaned in the area of the covers

Covers unscrewed and carbon brushes removed

Check if the carbon brushes are worn

Carbon brushes replaced if necessary

Components assembled in the reverse order of disassembly

- BRUSH MOTOR CARBON BRUSH CHECK/REPLACEMENT(For BA 451, BA 451D, BA 531, BA 531D)

1. If the tank (21) contains recovery water

• Drive the machine to the appointed recovery water disposal area

• (For BA 451D, BA 531D) Turn the ignition key (80) to “0”

• (For BA 451, BA 531) Turn off the switches (71) and (73)

• Empty the recovery water tank (21) with the hose (16)

2. Drive the machine on a level floor

4. Lower the deck by pressing the pedal (11)

- SOLUTION FILTER CLEANING (For BA 451, BA 451D, BA 531, BA 531D, CA 451, CA 531, without EcoFlexTM system)

1. Drive the machine on a level floor

2.1 - (For BA 451D, BA 531D) Turn the ignition key (80) to “0”

2.2 - (For BA 451, BA 531) Turn off the switches (71) and (73)

2.3 - (For CA 451, CA 531) Disconnect the power supply cable (59) from the electrical mains

3. Close the solution tap (A) under the machine left lower side. The tap (A) is closed when it is on the position (B) and it is open when it is on the position (C)

4. Remove the transparent cover (D), then remove the filter strainer (E). Clean and install them on the support (F)

NOTE! The filter strainer (E) must be correctly positioned on the housing (G) of the support (F)

Warning: This maintenance check requires trained personnel with PPE!

Cover (A) removed from the vacuum system motor (B)

Electrical connections (D) disconnected

Check the carbon brushes for wear

Components assembled in the reverse order of disassembly

Drive the machine on a level floor

Lower the squeegee (25) with the lever (10)

Loosen the handwheels (26) and remove the squeegee (25)

Disconnect the vacuum hose (15) from the squeegee

Clean the steel squeegee (Fig. 1) or the aluminium squeegee (Fig. 2). Clean the compartments (A, Fig. 1 or 2) and the hole (B) especially. Check the front blade (C) and the rear blade (D) for integrity, cuts and tears; otherwise replace them (see the procedure in the following paragraph)

Install the squeegee in the reverse order of removal

Clean the steel squeegee (Fig. 1) or the aluminium squeegee (Fig. 2), according to the procedure shown in the previous paragraph

Check that the edges (E, Fig. 1 or 2) of the front blade (C) and the edges (F) of the rear blade (D) lay down on the same level, along their length; otherwise adjust their height according to the following procedure