Nilfisk-Advance BR 1100S Service Manual

Also see for 56413006: Instructions for use Instructions for use - original instructions

Contents

Nilfisk-Advance BR 1100S Service Manual Manual pdf 35 page image

FORM NO. 56043122 - BR 1100S, 1300S - 33RECOVERY SYSTEM - 4VACUUM / RECOVERY SYSTEM SERVICE MAINTENANCE CHECKLISTWhenever there is a vacuum problem, it’s best to check over the entire system. Use the checklist below as a guide, to thoroughly check the vacuum system.□ Inspect and clean the vacuum motor fl oat cage, vacuum filter and inlet screen.□ Clean built-up dirt from the inside of the squeegee tool.□ Replace the squeegee blades if they are nicked or torn. Make needed angle and height adjustments to the squeegee tool assembly.□ Inspect the hose between the squeegee tool and the recovery tank, rinse any built-up dirt from the hose. Replace the hose if it is kinked or damaged.□ Inspect and make sure the gasket on the recovery tank cover are sealing and not damaged.□ Make sure that the recovery tank drain hose cap seals airtight.TROUBLESHOOTING GUIDEIf water fl ows around the ends of the squeegee tool, instead of being pulled into the tool, the vacuum system is not working properly. When a vacuum systemperforms poorly, it is usually because of one of the following problems:Vacuum Leak(s) – Air flowing into the vacuum system past a bad gasket or leaky hose, damaged tank, or a leaky drain valve. A vacuum leak below the water linewill create turbulence in the recovery tank, causing water to enter the vacuum motor.Restriction(s) – Anything that blocks the flow of air through the system. Restrictions may also be caused by built-up debris in the squeegee tool, vacuum hoses,fl oat cage or wherever the airfl ow is forced to make a sharp turn.Both leaks and restrictions decrease the quantity of air flowing through the squeegee tool. The air that does go through the squeegee tool moves slower, so it hasless pick-up power.Vacuum Electrical Components – The vacuum systems major electrical components are monitored by the main controller to detect any system function failures(error codes). The system components covered are the vacuum motor and vacuum solenoid. Detected error codes from the main controller are displayed on thehour meter LED display as they occur. Note: Reference the Main Control Board Troubleshooting Guide in the Electrical System of this manual for specific faultdescriptions and service repair actions.MAINTENANCE OF VACUUM SYSTEM FILTER, SCREEN AND FLOAT CAGESee Figure 4.2. To inspect and clean both the vacuum motor (foam) filter and inlet screen just lift open the tethered Vacuum Filter Cover (A). Remove the filter andscreen by pulling it out from the recessed housing opening. Clean the filter and screen by vacuum or washing them out in warm water. Note: The filter and screenmust be completely dry before reinstalling.To inspect the vacuum shut-off Float Cage (B) just lift open the right rear recovery tank cover (cage location, left rear corner of opening). The cage openings (slots)must be kept free of any debris that can restrict maximum airflow. To keep it clean, wipe it off with a rag regularly or flush with water. The cage is a two piece designand can be snapped apart to separate.VACUUM MOTOR REMOVALWARNING!Disconnect the battery pack by pushing in the emergency disconnect lever (11) before making service repairs.1 See Figure 4.2. Drain the recovery tank using the attached drain hose. Then release the tank latch and tilt the tank to the rear.2 Remove the (5) Screws (C) from the vacuum motor Cover (D) and then lift the cover straight up guiding the float cage up through the opening in the recoverytank completing its removal.3 Disconnect wiring harness connector from Vacuum Motor (E) and lift the motor out from its mounting cavity.4 Inspect all the vacuum system gaskets (items F, G, H & I), also clean the vacuum motor foam Filter (J), Screen (K) and Exhaust Hose (L).5 Inspect the carbon motor brushes, if less than 3/8” (10 mm) in length replace.RECOVERY TANK REMOVALWARNING!Disconnect the battery pack by pushing in the emergency disconnect lever (11) before making service repairs.1 See Figure 4.2. Drain the recovery tank using the attached drain hose.2 Disconnect the squeegee hose at the squeegee tool and also at the top of the tank (just twist the hose to remove). Note: The optional removal of the squeegeetool at the mount will allow more room to maneuver, in removing the tank.3 Locate the vacuum motor wiring connector underneath the left rear bottom of the recovery tank and disconnect it.4 Release the tank latch and tilt the tank to the rear then separate the Tether (M) (wire cable) from the back of the driver’s seat. Note: Have control (a good gripof the tank) do not allow the tank to fall on its own to the floor. Continue to lower the tank to the floor level. The tank is attached to the chassis by two Pins (N)lift up on the tank ends to separate and pull the tank free from the machine. Note: Be careful not to crush or damage the drain hose when pulling the tank fromthe chassis.5 To re-install the tank align each side of the Tank Bracket (O) with the chassis pins one at a time and grip the opening of the tank cover at the rear and quicklylift up to set (engage) the tank to its upright position. Follow in reverse the above steps to complete its installation.