B 90 R - Sweeper Kärcher - Free user manual and instructions

USER MANUAL B 90 R Kärcher

Chairman of the Board of Management Director Regulatory Affairs & Certification 12 DE- 1 Please read and comply with these original instructions prior to the initial operation of your appliance and store them for later use or subsequent own- ers. Before using the appliance for the first time, read and observe these operating instruc- tions and the accompanying brochure: Safety information for brush cleaning units 5.956-251.0. The machine has been approved for use on surfaces with gradients of up to 10%. Safety devices serve to protect the user and must not be rendered in operational or their functions bypassed. To put all functions out of operation imme- diately: Press emergency-stop button. – The machine comes to a sudden halt when you press the emergency-stop button. – The emergency-stop has a direct effect on all machine functions. – The display continues. Switches off the drive motor after a short delay, if the operator leaves the operator seat during operation or while moving. DANGER Pointer to immediate danger, which leads to severe injuries or death. 몇 WARNING Pointer to a possibly dangerous situation, which can lead to severe injuries or death. 몇 CAUTION Pointer to a possibly dangerous situation, which can lead to minor injuries. ATTENTION Pointer to a possibly dangerous situation, which can lead to property damage. The scrubber vacuum is used for wet cleaning or polishing of level floors. You can adjust the machine to suit the cleaning task by modifying the settings for water quantity, contact pressure of the brushes, detergent quantity and driving speed. This appliance is suited for the commercial use, e.g. in hotels, schools, hospitals, facto- ries, shops, offices, and rental companies. Use this appliance only as directed in these operating instructions. – The appliance may only be used for the cleaning of hard surfaces that are not sensitive to moisture and polishing op- erations. – This appliance is intended for inside use. – The application temperature ranges from +5°C to +40°C. – The appliance is not suited for the cleaning of frozen grounds (e.g. in cold stores). – The appliance is suitable for a max. wa- ter depth of 1 cm. Do not drive into an area where there is a risk of this max. water height being exceeded. – The appliance may only be equipped with original accessories and spare parts. – The appliance is not intended for the cleaning of public traffic routes. – The machine should not be used on surfaces that are sensitive to pressure. Please consider the allowed load per surface unit of the floor. Details of load per surface unit can be found in the technical data. – The appliance is not suited for the use in potentially explosive environments. – The machine should not be used to suck in inflammable gases, undiluted acids or solvents. This includes petrol, thinning agents or hot oil that can form an explosive mix- ture when it comes in contact with sucked air. Do not use acetone, undilut- ed acids and solvents as they are ag- gressive towards the materials from which the appliance is made. Notes about the ingredients (REACH) You will find current information about the ingredients at: www.kaercher.com/REACH Figure 1, see cover page 1 Wiping flap * 2 Cleaning head * 3 Detergent bottle (only Dose model) 4 Suction hose for detergent (only Dose model) 5 Lever to raise and lower the vacuum bar 6 Water quantity regulator 7 Operating field 8 waste water tank 9 Cover waste water tank 10 Vacuum bar * 11 Wing nuts for tilting the vacuum bar 12 Wing nuts for fastening the vacuum bar 13 Suction hose 14 Float 15 Power cord for charger (only Pack mod- el) 16 Safety support 17 Battery plug (not with Pack model) 18 Battery 19 Seat (with seat contact button) 20 Steering wheel 21 Fresh water tank cover 22 Lever for brush contact pressure (only with the Adv model) 23 Fresh water filter 24 Pedal for raising/ lowering the cleaning head 25 Flat fold filter 26 Waste container (only with R cleaning head) * 27 Dosing equipment for dirt water 28 Dirt water discharge hose 29 Warning lamp for reverse movement * 30 Filling system * 31 Right step platform 32 Drive pedal 33 Adjustment wheel for wiping flap * 34 Pedal for brush exchange (only with D cleaning head) *

• not included in the delivery – The operating elements for the cleaning process are yellow. – The controls for the maintenance and service are light gray. Figure 2, see cover page 1 Drive direction switch 2 Program switch 3Horn 4 Key switch 5 Emergency-stop button 6 Switch for detergent dosing (only with Dose model) 7 Switch for warning lamp for reverse movement * 8 Info button (only Adv. model) 9 Display 10 Indicator lamp - service 11 Indicator lamp - automatic immobilizing brake active 12 Indicator lamp - battery monitoring 13 Indicator lamp - fault 14 Indicator lamp - waste water tank full 15 Indicator lamp - brush overload Contents Safety instructions . . . . . . . . . . EN 1 Function. . . . . . . . . . . . . . . . . . EN 1 Proper use. . . . . . . . . . . . . . . . EN 1 Environmental protection. . . . . EN 1 Control elements . . . . . . . . . . . EN 1 Before Startup . . . . . . . . . . . . . EN 2 Operation. . . . . . . . . . . . . . . . . EN 3 Transport . . . . . . . . . . . . . . . . . EN 5 Storage . . . . . . . . . . . . . . . . . . EN 5 Care and maintenance . . . . . . EN 5 Troubleshooting. . . . . . . . . . . . EN 6 Technical specifications. . . . . . EN 8 Accessories and Spare Parts . EN 8 Warranty . . . . . . . . . . . . . . . . . EN 8 EU Declaration of Conformity . EN 8 Safety instructions Safety Devices Emergency-stop button Safety Switch Hazard levels Function Proper use Environmental protection The packaging materials are re- cyclable. Please do not throw packaging in the domestic waste but pass it on for recycling. Old units contain valuable recy- clable materials. Batteries, oil and similar substances may not be released into the environment. Therefore please dispose of old units through suitable collection systems. Control elements Colour coding Operator console 13EN- 2 DANGER Risk of explosion! Do not place tools or similar items on the battery. Risk of short-circuit and explosion. Risk of injury. Ensure that wounds never come into contact with lead. Always clean your hands after having worked with batter- ies. The "Pack" model contains built-in batter- ies. Swivel the seat to the front. Figure 3, see cover page Insert batteries. Note: The two recommended battery types are housed differently in different arrange- ments in the device. ATTENTION Risk of damage. Ensure correct polarity. Lubricate the battery pole with pole grease. Connect pole using the enclosed con- necting cable. Connect the connection cable to the free battery poles (+) and (-). Insert battery plug. Raise the safety support und and swivel seat to the bottom. ATTENTION Risk of damage due to full discharge! Charge the batteries before commissioning the appliance. Note: The device is equipped with a safety mech- anism to prevent total discharge, i.e. when the permissible minimum capacity is reached, then the machine can only be driven and existing lamps can be switched on. In such a case, the battery monitoring symbol on the control console glows red. Drive the appliance directly to the charging station; avoid any steep gradi- ents in the process. Note: When using other batteries (e.g. batteries from other manufacturers), the total dis- charge protection level for the respective battery must be reset by the Kärcher after- sales service. DANGER Risk of electric shock. Observe power sup- ply net and fuse protection – see "Charger". Use the charger in dry rooms with sufficient ventilation only! Note: Average charging time is approx. 10 -12 hours. The recommended chargers (suitable for the batteries used) are regulated electroni- cally and will automatically terminate the charging process. DANGER Danger of explosion. Wet batteries may only be charged with the seat tilted up. Tilt the seat upward. Take the power cord out of its holder and insert the plug into the socket. The display will show the charging sta- tus of the batteries. Note: All cleaning and driving functions are blocked during the charging process. The functions are disabled until a charging peri- od of at least 90 minutes has elapsed and the mains plug has been unplugged again. After the charging process, pull the power plug and insert into the holder on the appliance. Tilt the seat upward. Remove battery plug and join it to the charging cable. Connect the charger to the mains and turn it on. Switch off the charger and remove the plug from the socket after you have fin- ished charging. Pull the battery cable from the charger cable and connect it to the machine. Add distilled water one hour before the charging process comes to an end; fol- low the correct acid level. There are corresponding indicators on the battery. At the end of the charging process, all cells must gas. 몇 WARNING Danger of causticization! – Adding water to the battery in its dis- charged state can cause the acid to leak. – Use safety glasses while handling bat- tery acid and follow the safety instruc- tions to avoid personal injury or damage to clothes. – Should the acid spray on to the skin or clothes, rinse immediately with lots of water. ATTENTION Risk of damage! – Use only distilled or desalinated water (EN 50272-T3) for filling the battery. – Do not add any substances (so-called performance improving agents), else warranty claims will not be entertained. Turn main key to "0" and remove it. Swivel the seat to the front. Pull out the battery plug. Clamp off the minus pole of the battery. Clamp off the remaining cables from the battery. Remove the batteries. Dispose of the used batteries according to the local provisions. Note: Press the emergency-stop button to imme- diately deactivate all functions and turn the key switch to the "0" position. Four floor boards of the pallet are fas- tened with screws. Unscrew these boards. Figure 4, see cover page Place the boards on the edge of the pal- let. Place the boards in such a way that they lie in front of the four wheels of the machine. Fasten the boards with screws. Slide the four support beams included in the packaging under the ramp. Remove the wooden bars in front of the wheels. Figure 5, see cover page Pull the brake lever and push the appli- ance down the ramp with the level pulled.

Before Startup Batteries Observe the directions on the bat- tery, in the instructions for use and in the vehicle operating instructions Wear eye protection Keep children away from acid and batteries Danger of explosion Fire, sparks, naked flames and smoking must be strictly avoided Danger of chemical burns First aid Warning note Disposal Do not throw the battery into the regular waste Insert batteries and connect Layout A (Fig. 3A) 180 Ah Layout B (Fig. 3B) 240 Ah Charge the batteries "Pack" model Model without integrated charger Low maintenance batteries (wet batteries) Recommended batteries, chargers Order No. Battery pack, 180 Ah, maintenance-free (4 batteries) 6.654-124.0 Battery pack, 240 Ah, maintenance-free (4 batteries) 6.654-119.0 Charger for mainte- nance-free batteries 6.654-125.0 Maximum battery dimensions Layout A B Length 244 mm 312 mm Width 190 mm 182 mm Height 275 mm 365mm Removing the batteries Unloading 14 EN- 3 Release emergency-stop button by turning. Set main switch to "1". Press the drive direction switch and slowly move the machine down from the ramp. Set main switch back to "0". The procedure for changing the cleaning head is described in the chapter "Mainte- nance Tasks". Note: On some models, the cleaning head is al- ready installed. The installation of the brushes is described in the chapter "Maintenance Tasks". Figure 6, see cover page Insert the vacuum bar into the vacuum bar suspension in such a manner that the profiled sheet is positioned above the suspension. Tighten the wing nuts. Insert the suction hose. DANGER Risk of injury. Do not used the device with- out an overhead guard to protect against falling objects in areas in which there is a possibility of operators being stuck by fall- ing objects. Note: Press emergency-stop switch to immedi- ately switch off all functions of the machine. DANGER Risk of accident. Prior to every operation, the parking brake must be checked for proper function on a level ground. Take the seating position. Release emergency-stop button by turning. Set the key switch to "1". Select travel direction. Gently depress drive pedal. The brake must get released and you must be able to hear it (the control lamp for immo- bilizing brake on the console switches off). The machine must roll slightly on a plane surface. When the pedal is released, the brake falls in an audible manner. Switch off the machine and call the aftersales service if the above-mentioned events do not oc- cur. DANGER Risk of accident. If the device does no long- er show any braking effect, proceed as fol- lows: If the device does not come to a halt on a ramp with a gradient of 2% when you release the drive pedal, then the emer- gency-stop button may be pressed for safety reasons only if the mechanical functioning of the immobilizing brake has been checked properly before com- missioning the device. Switch off the machine only after it comes to a complete halt (on an even surface) and call up the aftersales ser- vice! Further, follow all warning instructions for braking. DANGER Danger of tipping if gradient is too high. The gradient in the direction of travel should not exceed 10%. Danger of tipping when driving round bends at high speed. Danger of slipping on wet floors. Drive slowly when cornering. Danger of tipping on unstable ground. Only use the machine on sound surfac- es. Danger of tipping with excessive sideways tilt. The gradient perpendicular to the direc- tion of travel should not exceed 10%. Release emergency-stop button by turning. Sit on the seat and set main switch to "1". Set the drive direction using the drive direction button at the operator console. Determine the driving speed by press- ing the drive pedal. Stop the machine: Release the drive pedal. Note: The direction of travel can also be changed while driving. This way even very dull spots can be polished by driving back and forth several times. When switching on the display, the follow- ing messages will appear in sequence: – „ < SELFTEST >“: The control conducts a self-test. – „Water E-----F“ (model Adv): Water lev- el in the fresh water tank (lasts for 6 seconds). „OpHrs xxxxxhxxm+“ (Classic model): Operating hours (lasts for 6 seconds) – "Battery: E-----F“: Charging status of battery. In case of overloading, the drive motor au- tomatically switches off after a certain peri- od. A fault message is displayed on the console. The concerned unit gets switched off if the controls get overheated. Allow machine to cool down at least for 15 minutes. Turn the main switch to "0" and turn it back to "1". ATTENTION Risk of damage. Only use the recommended detergents. With other detergents, the opera- tor bears the increased risk regarding the op- erational safety and danger of accident. Only use detergents that are free from sol- vents, hydrochloric acid and hydrofluoric acid. 몇 CAUTION Follow the safety instructions for using de- tergents. Note: Do not use highly foaming detergents. Recommended detergents: Open the cover of the fresh water reser- voir. Fill fresh water (max. 60 °C) until 15 mm below the upper edge of the tank. Pour in detergent. Note: If detergent is added to the detergent tank first before the water, this can result in a for- mation of a lot of foam. Close the cover of the fresh water res- ervoir. Note: Fill up the fresh water tank completely prior to the initial start-up to bleed the water pipe system. Connect the water hose to the connec- tion neck on the filling system. Open the water supply. Once the maximum fill level is reached, the built-in floater valve will stop the wa- ter inflow.

Shut off water supply. Remove the water hose. Detergent is added to the fresh water on the way to the cleaning head with the help of a dosaging device. Place the detergent bottle into the de- vice. Close the bottle lid. Insert the suction hose of the dosaging equipment into the bottle. Note: The dosing unit can be used to add 3% de- tergent at maximum. With higher dosage the detergent must be put into the fresh wa- ter tank. Install cleaning head Installing the Brushes Installing the Vacuum Bar Operation Check parking brake Driving Driving Display Overload Filling in detergents Detergent Application Detergent Routine cleaning of all water resistant floors RM 746 RM 780 Routine cleaning of glossy surfaces (e.g. granite) RM 755 es Routine cleaning and basic cleaning of industrial floors RM 69 ASF Routine cleaning and basic cleaning of fine stoneware tiles RM 753 Routine cleaning of tiles in sanitary areas RM 751 Cleaning and disinfection in sanitary areas RM 732 Removal of coating from all alkali-resistant floors (e.g. PVC) RM 752 Removal of coating from li- noleum floors RM 754 Fresh water Filling system (optional) Metering system (only Dose model) 15EN- 4 ATTENTION Risk of clogging due to dried detergent when the detergent is added to the fresh water tank of the Dose version. The flow meter of the dosing equipment can aggluti- nate on account of drying detergent and hamper the functioning of the dosing equip- ment. Subsequently rinse the fresh water tank and the appliance with clear water. For rinsing, select cleaning programme with application of water at the programme se- lector switch. Set the water quantity to the highest value, set the detergent dosage to

Note: The appliance is equipped with a fresh wa- ter indicator in the display. If the fresh water tank is empty, the function of adding deter- gent gets deactivated. The cleaning head continues to work without liquid supply. Figure 7, see cover page 1 Driving Driving to the Place of Use. 2 Scrubbing suction Wet clean the floor and vacuum up dirt water. 3 Wet scrubbing Wet clean the floor and allow the deter- gent to react. 4 Vacuuming Suck in the dirt fleet. 5 Polishing Polishing the floor without the applica- tion of liquid. 6 Scrub the floor without applying water (vacuum polishing) Polish the floor without applying any flu- id and suck in the polishing dust. Note: Depending on the program, the suction bar and the cleaning head must also be low- ered with the appropriate control elements to perform the selected program. Use the Info button to select the menu items and do the settings. – Turning the button to the right/left scrolls through the menus forward/ backward. – The selected setting gets accepted by pressing the button. You can make the settings for the different cleaning programs in the operator menu. Different parameters can be set based on the cleaning program. The settings are done using the Info button. Release emergency-stop button by turning. Sit on the seat and set main switch to "1". The display shows the battery charging status and the fresh water level. Select cleaning program. Call the operator menu by turning the info button. Select the desired parameter by turning the Info button. Press Info button - the set value blinks. Reset the parameter by turning the info button. Accept modified setting by pressing the Info button or wait till the set value is ac- cepted automatically. Note: If the selected parameter does not change within 10 seconds, then the display goes back to displaying the battery charging sta- tus and the fresh water level. The same cleaning parameter can have in- dividual settings for each cleaning pro- gram. All settings are saved, even if the device is de-energized. Turn the info button until "Information- menu" is displayed. Retrieve the info menu by pressing the info button. The following information can be displayed by turning the info button: Set the water quantity at the regulation knob according to the dirt level and the type of flooring.

Press down the rear surface of the ped- al to raise/lower the cleaning head, re- lease and let the pedal move upwards. The brush drive will start as soon as the cleaning head is lowered. Press down the front surface of the ped- al to raise/lower the cleaning head and lock it. Pull the lever up to raise/lower the vac- uum bar, press toward the outside and lower. The suction process will start as soon as the level is moved down. Pull the lever to raise and lower the vac- uum bar up and lock. To improve the vacuuming result on tiled floors the vacuum bar can be turned to an oblique position of up to 5°. Figure 8, see cover page Release the wing nuts. Turn the vacuum bar. Tighten the wing nuts. If the vacuum result is unsatisfactory the in- clination of the straight vacuum bar can be modified. Figure 8, see cover page Release the wing nuts. Tilt the vacuum bar. Tighten the wing nuts. Figure 10, see cover page Unlock the lever for the brush contact pressure to the left and relock to the right. – Level down: Reduce contact pressure. – Level up: Increase contact pressure. Adjust the wiper flaps by turning the ad- justment wheel so that they touch the floor. Turn the adjustment wheel an addition- al turn toward the bottom. Note: Overflow waste water tank. If the dirt water tank is full, the suction turbine switches off and the indicator lamp "waste water tank full" begins to blink. All cleaning programs with suction are blocked for one minute. Empty the waste water tank. 몇 CAUTION Please observe the local provisions regard- ing the wastewater treatment. Cleaning Programs Info button (only Adv. model) Settings (only Adv. model) Operator menu Adjustable parameters Adjustable param- eters min:step :max Remark Cleanspeed (max. cleaning speed) 1:1:6 1=1km/h, 6=6km/h FACT (brush speed) –Power Whisper Fine Vacuum (suction performance) –Low High Only with Dose model Chemical/Agent (detergent meter- ing) 0.5%:0.5 %:3%

Info menu Display Significance Ophrs xxxxxhxxm+ Operating hour counter When the counter is running, "+" will be displayed Water E-----F Water level in fresh water tank "C" blinks while the metering pump is operating (only Dose model) Speed: xkm/h Current speed Alfred/Kärcher Manufacturer B90R Dxx Appliance descrip- tion Prog.Vers. x.x Softwareversion Exit Inform.menu Exit the info menu by pressing the info button. Setting the water quantity Raise/lower the cleaning head Lower Raise Raise/lower the vacuum bar Lower Raise Setting the Vacuum Bar Oblique position Inclination Adjust brush contact pressure (only with the Adv model) Adjust wiper flaps (only with the Adv model) Emptying the waste Water tank 16 EN- 5 Take the dirt water discharge hose from the support and lower above a suited collection device. Figure 11, see cover page Let off water by opening the dosage de- vice at the discharge hose. The rinse the dirt water reservoir with clear water. Unscrew the filter cup of the fresh water filter and let the fresh water tank drain completely. Replace the filter cup. Check the waste container. If needed, remove and empty waste container af- ter work. Turn main key to "0" and remove it. Secure the machine with wheel chocks to prevent it from rolling away. DANGER Risk of injury! When loading or unloading the machine, it may only be operated on gradients of max. 10%. Drive slowly. 몇 CAUTION Risk of injury and damage! Observe the weight of the appliance when you transport it. When transporting in vehicles, secure the appliance according to the guide- lines from slipping and tipping over. Remove brushes from the brush head. 몇 CAUTION Risk of injury and damage! Note the weight of the appliance in case of storage. This appliance must only be stored in interior rooms. Select the storage site for the appliance taking into consideration the permissi- ble total weight of the appliance in order not to impact its stability. Danger Risk of injury. Before carrying out any tasks on the machine, set the main key to "0" and remove it. Press emergency-stop button. Place the appliance on a stable, even sur- face and disconnect the battery. 몇 WARNING Suction turbine will continue to run for a while after switch-off. Carry out mainte- nance tasks only after the suction turbine has come to a halt. Drain and dispose of the dirt water and the residual fresh water. ATTENTION Risk of damage. Do not sluice the appli- ance with water and do not use aggressive detergents. Drain off dirt water. Check the flat folded filter, clean if re- quired Only with R cleaning head Remove bulk waste container and empty it. Clean the outside of the appliance with a damp cloth which has been soaked in mild detergent. Clean the vacuum lips and the wiping lips, check for wear and replace if re- quired. Check the brushes for wear, replace if required. Charge the battery: If the charging state of the battery is un- der 50%, charge the battery fully and without interruption. If the charging state of the battery is over 50%, only recharge the battery if the entire operation duration will be re- quired when next used. When used regularly, charge the bat- tery fully and without interruption at least once a week. Check battery pole for oxidation; brush it if required and lubricate it using pole grease. Ensure that the connection ca- ble sits firmly. Clean the seals between waste water tank and cover and check for tightness, replace if required. Check the acid density of the cells if the batteries are not maintenance-free bat- teries. Clean the brush tunnel (only R cleaning head) Figure 12, see cover page Remove the water distribution strip from the cleaning head and clean water ca- nal (only R cleaning head). For long periods of disuse, only turn the device off when the battery is fully charged. Fully recharge the battery at least every month. Replace pump hose of the metering pump (only Dose model). Have the prescribed inspection carried out by the customer service. For a reliable operation of the appliance maintenance contracts can be concluded with the competent sales/service consult- ant. Remove the vacuum bar. Unscrew the star grips. Figure 13, see cover page Remove the plastic parts. Remove the vacuum lips. Insert new vacuum lips. Insert the plastic parts. Screw in and tighten the star grips. Push the pedal for raising/ lowering the cleaning head down. Slide the cleaning head under the appli- ance so that the hose points toward the rear. Only slide the cleaning head halfway under the appliance. Figure 14, see cover page Remove the lid of the cleaning head. Figure 15, see cover page Connect the power cord of the cleaning head to the appliance (same colours must meet). Replace the lid and lock it. Slide the cleaning head halfway under the appliance. Figure 16, see cover page Connect the hose couplers on the cleaning head to the hose on the appli- ance. Figure 17, see cover page Insert the tab into the middle of the cleaning head, between the fork of the lever. Position the lever on the pedal for rais- ing/lowering so that the borings in the lever and the cleaning head align. Insert the stop pin through the bushings and swivel the locking plate downward. Figure 18, see cover page Insert the cylinder pin into the boring of the drawbar. Slide the drawbar with the pin the guide channel on the cleaning head all the way to the bottom and lock. Repeat process on the drawbar on the opposite side. Push the pedal for raising/ lowering the cleaning head down. Slide the cleaning head under the appli- ance so that the hose points toward the rear. Only slide the cleaning head halfway under the appliance. Figure 19, see cover page Pull out the cover. Figure 20, see cover page Connect the power cord of the cleaning head to the appliance (same colours must meet). Push in the cover. Slide the cleaning head halfway under the appliance. Figure 16, see cover page Connect the hose couplers on the cleaning head to the hose on the appli- ance. Figure 21, see cover page Insert the tab into the middle of the cleaning head, between the fork of the lever. Position the lever on the pedal for rais- ing/lowering so that the borings in the lever and the cleaning head align. Insert the stop pin through the bushings and swivel the locking plate downward. Emptying the Fresh Water Tank Empty waste container (only with R cleaning head) Shutting down Transport With mounted D cleaning head Storage Care and maintenance Maintenance schedule After the work Weekly Monthly Yearly Maintenance Works Maintenance contract Replacing the vacuum lips Install D cleaning head Install R cleaning head 17EN- 6 Figure 22, see cover page Insert the cylinder pin into the boring of the drawbar. Slide the drawbar in the guide channel on the cleaning head all the way to the bottom. Insert the locking plate into the guide channel and lock it in. Repeat process on the drawbar on the opposite side. Figure 23, see cover page Press in the locking plate and swivel the drawbar upward. The subsequent removal will take place in the opposite order of the installation. The removal will take place in the opposite order of the installation. Figure 24, see cover page Lift the cleaning head. Loosen the lock of the wiper flap. Swivel the wiping flap out of the way. Figure 25, see cover page Loosen the lock of the wiper flap. Push the bearing lid down and remove. Pull out the brush roller. Insert a new brush roller. Reattach the bearing lid and the wiper flap in reverse sequence. Repeat process on the opposite side. Lift the cleaning head. Press the pedal for changing the brush- es downward beyond its resistance. Pull the disc brush out of the side below the cleaning head. Hold the new disc brush under the cleaning head, push upward and lock. Unscrew the right stepping platform and remove along with the drive pedal. Figure 26, see cover page 1 Covering lid 2Cover 3 Hose holder 4 Pump hose 5 Rotor Remove covering lid. Remove cover. Remove the hose holder with the pump hose (turn manually to remove the rotor manually). Replace pump hose. Dosing pump and appliance are brought into operational state by per- forming the same steps in the reverse direction. In case of danger of frost: Empty the fresh and dirt water reser- voirs. Store the appliance in a frost-protected room. Danger Risk of injury! Before carrying out any tasks on the machine, set the main key to "0" and remove it. Press emergency-stop button. Place the appliance on a stable, even sur- face and disconnect the battery. Drain and dispose of the dirt water and the residual fresh water. In case of faults that cannot be remedied using the table below please contact the customer service. Note: Defective pole fuses should only be re- placed by the service center. If these fuses are defective, then customer service center has to check the usage conditions and the entire control system. If errors appear on the display, then pro- ceed as follows: Set the key switch to "0" (switch off the machine). Wait till the text on the display has dis- appeared. Set the main switch again to "1" (switch on the machine). Carry out the trouble- shooting measures in the given se- quence only if the fault occurs again. At such times, always bring the main switch to the "0" position and ensure that the emergency-stop button is de- pressed. If the fault cannot be repaired, call cus- tomer service and mention the error message. Note: Fault messages that are not listed in the fol- lowing table indicate faults that cannot be rectified by the operator. Please contact the aftersales service. Remove D cleaning head Remove R cleaning head Replacing the brush rollers Replacing the Disk Brushes Replace pump hose (only Dose model) Frost protection Troubleshooting Replace fuses Fault indication Faults with display Display Cause Remedy E: Did you press the emergency stop but- ton !?! Press emergency-stop button. Release emergency-stop button by turning. Set the main switch to "0". Wait un- til display goes off. Set the main switch back to "1". E: Pow.module hot Let cool down! Control is overheated Turn the key switch to "0". Wait at least 5 minutes to let the control cool off. Turn the appliance back on. E: Overload BRUSH Overload on brush motor Set key switch to “0”. Wait for 3 seconds. Turn the appliance back on. Reduce the brush contact pressure. E: Hardw. failure Onboardcharger Interference in the integrated charg- er (only Pack model) Disconnect the power cord plug of the charger. Wait for 10 seconds. Plug in the power cord plug. If the error message appears again: Call customer ser- vice. E: Failure char- ging battery Battery defective Check battery. E: Overload TRAC- TION MOTOR Drive motor has got overheated due to a steep climb or locked brake. Allow machine to cool down at least 15 minutes. Set key switch to “0”. Wait for 3 seconds. Turn the appliance back on. Avoid frequent uphill driving. Seat switch! Please sit down! Seat contact switch has not been activated. Release the drive pedal. Have a seat. Release gaspedal The gas pedal is depressed when the main switch is on. Release drive pedal and reactivate. Followup suction Shutdown shortly The key switch was turned to "0" while the suction turbine was run- ning. The suction turbine trails with a delay of 10 seconds. Wait until the appliance shuts itself off after 10 seconds. Dirttank full Clean- ing stops waste water tank is full. Empty the waste water tank. Emergency brake operation! Drive at ground level Parking brake is defective. Danger! Do not drive over upward/downward slopes. Park the machine on an even surface. Secure the machine with wheel chock(s) to prevent it from rolling away. Inform Customer Service. 18 EN- 7 Faults without display on the console Fault Remedy Appliance cannot be started Insert battery plug. Set main switch to “1” Safety switch not activated, sit down on the seat. The machine operates only if the operator is seated on the seat. Release emergency-stop button. Set the key switch to "0". Wait approx. 10 minutes before turning the key switch to "1" again. If possible, use the unit only on level surfaces. Check immobilizing brake and foot brake if required. Take your foot off the accelerator before switching on the main switch. If the fault recurs, call customer service. Check battery; charge it, if needed Insufficient water quantity Check fresh water level, refill tank if necessary. Check hoses for blockages; clean if required. R cleaning head: Remove the water distributor strip and clean it. Clean the fresh water filter. Insufficient vacuum perfor- mance Clean the seals between waste water tank and cover and check for tightness, replace if required. Clean the flat fold filter in the waste water tank Clean the vacuum lips on the vacuum bar, turn or replace if required Check suction hose for blockages; clean if required. Check the suction hose for tightness; replace if required. Check if the cover on the dirt water discharge hose is closed Check the setting of the vacuum bar. Attach additional weight (accessory) to the vacuum bar. Insufficient cleaning result Adjust the contact pressure (not with Eco model) Adjust the wiper flaps (not with Eco model) Check the brushes for wear, replace if required. Brushes do not turn Reduce the contact pressure (not with Eco model) Check if foreign matters block the brushes; remove foreign matter if required. Motor overload, allow to cool down. Set the key switch to "0". Wait approx. 10 minutes before turning the key switch to "1" again. Drain hose for dirty water is blocked Open dosing equipment at the drain hose. Pull out the suction hose from suction beam and close it by hand. Set the program selection switch to suction or vacuuming. The blockage will be sucked out from the drain hose into the dirt water tank. Detergent metering Dose (only Dose) does not function proper-

Inform Customer Service. 19EN- 8 – Only use accessories and spare parts which have been approved by the man- ufacturer. The exclusive use of original accessories and original spare parts ensures that the appliance can be oper- ated safely and trouble free. – At the end of the operating instructions you will find a selected list of spare parts that are often required. – For additional information about spare parts, please go to the Service section at www.kaercher.com. The warranty terms published by the rele- vant sales company are applicable in each country. We will repair potential failures of your appliance within the warranty period free of charge, provided that such failure is caused by faulty material or defects in man- ufacturing. In the event of a warranty claim please contact your dealer or the nearest authorized Customer Service centre. Please submit the proof of purchase. We hereby declare that the machine de- scribed below complies with the relevant basic safety and health requirements of the EU Directives, both in its basic design and construction as well as in the version put into circulation by us. This declaration shall cease to be valid if the machine is modified without our prior approval. The signatories act on behalf of and with the authority of the company management. Documentation supervisor: S. Reiser Alfred Kärcher SE & Co. KG Alfred-Kärcher-Straße 28-40 71364 Winnenden (Germany) Tel.: [phone] Fax: [phone] Winnenden, 2019-05-01 Technical specifications B 90 R Classic, B 90 R Adv, B90 R Adv Dose R 55 D 55 R 65 D 65 R 75 D 75 Power Nominal voltage V 24 Battery capacity Ah (5h) 180 (240 Option) Average power consumption W 2200 Drive motor output (rated output) W 600 Suction engine output W 750 550 750 550 750 550 Brush engine output W 2 x 600 Vacuuming Cleaning power, air quantity l/s 20.5 Cleaning power, negative pressure kPa 120 Cleaning brushes Working width mm 550 650 750 Brush diameter mm 105 315 105 365 105 410 Brush speed 1/min 1200 140 1200 140 1200 140 Dimensions and weights Drive speed (max.) km/h 6 Slope max. % 10 Theoretical surface cleaning performance m

/h 3300 3900 4500 Fresh/waste water tank volume l 90 Volume of waste container l 5 – 6 – 7 – Length mm 1450 Width (without vacuum bar) mm 720 770 810 Height mm 1180 Permissible overall weight kg 460 Transport weight kg 309 (180 Ah), 373 (240 Ah, Option) Surface load (with driver and full fresh water tank) Front wheel N/cm

Sound pressure level L