KARCHER BD 50/50 Bp Classic 20 Inch Walk Behind Floor Scrubber Instruction Manual

BD 50/50 Bp Classic
makes a difference
59672010 01/22

BD 50/50 Bp Classic 20 Inch Walk Behind Floor Scrubber

Please read and comply with these original instructions prior to the initial operation of your appliance and store them for later use or subsequent owners.

Safety instructions

Before using the appliance for the first time, read and observe these operating instructions and the accompanying brochure:
Safety information for brush cleaning units and spray-extraction units, No. 5.956-251.0.
The device may only be operated when the cover and all lids are closed.
The appliance must only be operated on surfaces that do not exceed the max. permitted incline (see “Technical Specifications”).
WARNING
Do not use the appliance on inclines.

Safety devices
Safety devices serve to protect the user and must not be rendered in operational or their functions bypassed.
Safety Switch
If the safety switch is released, the brush drive shuts off.

Danger or hazard levels
DANGER
For an immediate danger which can lead to severe injuries or death.
WARNING
For a possibly dangerous situation which could lead to severe injuries or death.
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.

Function

The scrubbing vacuum cleaner is used for the wet cleaning of level floors.

• The device can be easily adjusted to the respective cleaning task by adjusting the water volume and the detergent volume.
  The detergent dosing unit can be adjusted via the addition in the tank.

• The device is equipped with a fresh water and a waste water tank (50 litres each). These allow an effective cleaning with a long usage life.

• A working distance of 500 mm will improve the efficiency when you are using the appliance for a long period.

• Propulsion is accomplished by manually pushing the appliance and is supported by the rotation of the brushes. The brush drive is powered by two batteries.

• The extendible transport chassis ensures easy transport runs.

• Batteries can be selected depending on the configuration (refer to Chapter “recommended batteries”)

Note:
The appliance can be equipped with various accessories depending on the cleaningtask.
Please request our catalogue or visit us onthe Internet at www.kaercher.com.

Proper use

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 operations.

• The appliance is not suited for the cleaning of frozen grounds (e.g. in cold stores).

• The appliance may only be equipped with original accessories and spare parts.

• 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 mixture when it comes in contact with sucked air. Do not use acetone, undiluted acids and solvents as they are aggressive towards the materials from which the appliance is made.

• The machine has been approved for use on surfaces with max. gradients as listed under “Technical Specifications”.

• This appliance is suited for the commercial use, e.g. in hotels, schools, hospi- tals, factories, shops, offices, and rental companies.

• The appliance was designed for the cleaning of floors inside or of covered surfaces.

Environmental protection

| The packaging material can be recycled. Please do not throw the packaging  material into household waste; please send it for recycling.
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****| Old appliances contain valuable recyclable materials that should be recycled  properly. Batteries, oil, and similar substances must not be released into the  environment. Please dispose of your old appliances using appropriate collection systems.

Electrical and electronic devices often contain components which could potentially pose a danger to human health and the environment if handled or disposed of incorrectly. However, these components are necessary for the proper operation of the device. Devices marked with this symbol must not be disposed of with regular household rubbish.
Information on ingredients (REACH)
The latest information on ingredients can be found under: www.kaercher.de/REACH

Warranty

The warranty terms published by our competent sales company are applicable in each country. We will repair potential failures of your accessory within the warranty period free of charge, provided that such failure is caused by faulty material or defects in fabrication. In the event of a warranty claim please contact your dealer or the nearest authorized Customer Service center. Please submit the proof of purchase.

Operating and Functional Elements

1 Fluff filter
2 Safety button
3 Battery
4 Drain hose for wastewater with dosing unit
5 Holding rail for home base
6 Float
7 Fresh water tank
8 Fresh water tank lock
9 Cleaning head| 10 Disc brush
11 Fresh water reservoir filler neck
12 Bow brush change
13 Waste water tank
14 Pedal transport chassis
15 Fresh water level display
16 Rotary handle to incline the vacuum bar
17 Height adjustment of suction bar
18 Wing nuts for fastening the vacuum bar| 19 Vacuum bar
*20 Suction hose
21 Water quantity regulator
22 Battery socket
23 Vacuum bar lowering lever
24 Operator console
25 Push handle
26 Storage surface for cleaning set “Home base box“
27 Cover waste water tank
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Colour coding

• The operating elements for the cleaning process are yellow.
• The controls for the maintenance and service are light gray.

Operator console

1. OFF
   Device is switched off

2. Normal mode
   Wet clean the floor and vacuum up dirt water.

3. Intense mode
   Wet clean the floor and allow the detergent to react.

4. Vacuum mode
   Suck in the dirt fleet.

5. Program selection switch

6. Display

Symbols on the machine

| Battery socket
---|---
| Lashing point
| Mop holder **
| Filling level fresh water tank 25%
| Bow brush change
| Vacuum bar lowering lever
| Pedal transport chassis
| Drain outlet fresh water tank
| Dirt water discharge  hose

Before Startup

Unloading

• Unscrew the screws from the middle board of the pallet.
• Push down the device holding the push handle and pull out the middle board.
• Remove the chocks in front of and next to the wheels.
• Push down the device holding the push  andle and push it forwards up to the edge of the pallet.
• Lift the device off the pallet and set it on the floor.

Install batteries
Install the batteries (see “Care and Maintenance/Install and connect batteries”).
Using batteries made by other manufacturers
We recommend using our batteries as described in chapter “Care and Maintenance/ Recommended batteries”.
Charging battery

Note:
The device is equipped with a safety mechanism to prevent total discharge, i.e. when the permissible minimum capacity is reached, the brush motor and the turbine are switched off.

• Drive the machine directly to the charging station; avoid any steep gradients in the process.

DANGER
Danger of injury due to electric shock. Observe the mains voltage and fuse protection on the type plate of the device.

Charging process
Average charging time is approx. 10 -15 hours.
The appliance must not be used during the charging process.

DANGER
Danger of explosion
Prior to charging low-maintenance batteries
Remove waste water tank (see Chapter “Maintenance and care/Maintenance tasks/Removing the waste water tank”). This prevents the accumulation of hazardous gases underneath the tank during the charging process.
ATTENTION
Risk of damage. Do not clean the device with water while the tank is removed.

1. Battery plug, appliance side
2. Battery plug, battery side

• Detach the battery plug on the unit side.
  ATTENTION
  Risk of damage!

• Do not connect the charger with the battery plug on the unit side.

• Only use a charger that is suitable for the installed battery type:

Note:
Please read the operating instructions of the charger manufacturer, especially the chapters on safety instructions!

• Connect the battery plug on the battery side with the charger.
• Plug the mains plug of the charger into a power outlet.
• Execute the charging process according to the information in the operating instructions of the charger.
• Connect the battery plug on the device side with the battery plug on the battery side.

Low maintenance batteries (wet batteries)

• WARNING Danger of causticization!
• Adding water to the battery in its discharged state can cause the acid to leak.
• Use safety glasses while handling battery acid and follow the safety instructions 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.
• Replace batteries with the same battery type only.

Installing the Vacuum Bar

• 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.

Operation

DANGER
Risk of injury!
In dangerous situations, release the safety switch/drive lever.

Filling in detergents
Fresh water

• Open the lock of the fresh water reservoir.
• Fill fresh water (maximum 60 °C) until the lower edge of the filling nozzle.
• Close the lock of the fresh water reservoir.

Detergent
WARNING
Risk of damage. Only use the recommended detergents. With other detergents, the operator bears the increased risk regarding the operational safety and danger of accident.
Only use detergents that are free from solvents, hydrochloric acid and hydrofluoric acid.
Follow the safety instructions for using detergents.
Note:
Do not use highly foaming detergents.

Recommended detergents :

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

• Add the detergent to the fresh water reservoir.

Note:
If the fresh water tank is empty, the cleaning head continues working without liquid supply.

Setting the water quantity

• Adjust the water quantity using the regulating button according to the dirt on the floor covering.

Note:
Carry out initial cleaning attempts with low water volume. Increase water volume stepby-step until the desired cleaning result is achieved.

Setting the Vacuum Bar
Oblique position
To improve the vacuuming result on tiled floors the vacuum bar can be turned to an oblique position of up to 5°.

• Loosen the wing nuts.

• Turn the vacuum bar.
  

• Tighten the wing screws.
  Inclination
  If the vacuum result is unsatisfactory the inclination of the straight vacuum bar can be modified.

• Adjust the rotary handle to incline the suction bar.
  Height
  The bend of the suction lips upon contact with the floor is influenced with the height adjustment.
  

• Try adjusting the twist handles of the height adjustment until the best vacuuming result is achieved.

Transport chassis
The transport chassis lifts the cleaning head off the floor.
Transport runs are performed with the cleaning head raised or dirt is vacuumed up.

1 Transport chassis pedal in transport position
2 Transport chassis pedal in cleaning position

• Using your foot, move the transport chassis pedal to the required position.

Cleaning
ATTENTION
Risk of damage to the floor covering. Do not operate the appliance on the spot.

• Swivel the transport chassis to the cleaning position.

• Turn the program selection switch to the desired cleaning program.
  Lower the vacuum bar

• Pull the lever out and press it down; the vacuum bar is lowered.
  Note:
  – For cleaning tiled floors, adjust the straight suction bar in such a way that cleaning is not done at an angle of 90 degrees to the joints.
  – The inclined position and the inclination of the suction bar can be adjusted to achieve better suction results (see “Adjusting the suction bar”).
  – If the waste water tank is full, the float closes the suction opening and the suction turbine runs at an increased speed. If this is the case, shut the vacuum off and drive to empty the waste water tank.

Shutting Down the Appliance

• Release the safety switch.
• Set the program selection switch to suction or vacuuming.
• Briefly drive forward and suck of the remaining water.
• Raise the vacuum bar.
• Swivel the transport chassis to the transport position.
• Charge battery, if required.

Drain off dirt water
WARNING
Please observe the local provisions regarding the wastewater treatment.

• Take the water discharge hose from the support and lower above a suited collection device.
  

• Crush or bend the dosing equipment.

• Open the lid of the dosing equipment.

• Drain off the dirt water – regulate the water quantity by pressing or bending.

• Rinse the waste water tank with clear water.

Drain off clean water

• Unscrew the lock of the fresh water reservoir.

Transport

DANGER
Risk of injury! When loading or unloading the machine, it may only be operated on gradients up to the maximum value (see “Technical Specifications”). Drive slowly.
CAUTION
Risk of personal injury or damage! Mind the weight of the appliance during transport.

• Press down and push the device using the push handle.
• When transporting in vehicles, secure the appliance according to the guidelines from slipping and tipping over.

Storage

CAUTION
Risk of personal injury or damage! Consider the weight of the appliance when storing it.
This appliance must only be stored in interior rooms.

Care and maintenance

DANGER
Risk of injury! Set the programme selector switch to “OFF” and pull the mains plug of the charger prior to performing any work on the appliance.
Remove the battery plug from machine.

• Drain and dispose of the dirt water and the residual fresh water.

Maintenance schedule
After each operation
ATTENTION

Risk of damage. Do not sluice the appliance with water and do not use aggressive detergents.

• Drain off dirt water.
• Rinse the waste water tank with clear water.
• Clean the outside of the appliance with a damp cloth which has been soaked in mild detergent.
• Check the fluff filter, clean if required.
• Clean the vacuum lips and the wiping lips, check for wear and replace if required.
• Check the brush for wear and replace if required (see “Maintenance tasks”).
• Charge the battery: If the charging state of the battery is under50%, 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 required when next used.
Weekly

• When used regularly, charge the battery fully and without interruption at least once a week.

Monthly

• Check battery poles for oxidation, brush off if necessary. Ensure that the connection cable sits firmly.
• Clean the seals between waste water tank and cover and check for tightness, replace if required.
• Clean sieve.
• Check the acid density of the cells if the batteries are not maintenance-free batteries.
• For long periods of disuse, only turn the device off when the battery is fully charged. Fully recharge the battery at least every month.

Yearly

• Have the prescribed inspection carried out by the customer service.

Maintenance Works
Cleaning the sieve

1. Cover
2. Cover

• Open the cover.
• Turn cover the clockwise and remove it.
• Remove and clean the sieve lying beneath it.
• Insert the sieve.
• Replace the cover and lock it by turning it anti-clockwise.
• Close cover.

Replace or turn vacuum lips

1. Wear indicator
2. Vacuum lip

The vacuum lips must be replaced or reversed if they are worn down to the wear indicator.

• Remove the vacuum bar.
• Unscrew the star grips.

• Remove the plastic parts.
• Remove the vacuum lips.
• Insert new or reversed vacuum lips.
• Insert the plastic parts.
• Screw in and tighten the star grips.

Replacing the disk brushes

• Push down the device holding the push handle so that the cleaning head is raised.
• Press the pedal for changing the brushes downward beyond its resistance.
• Pull the device towards the back so thatthe disc brush becomes accessible.
• Place a new disc brush on the floor in front of the device.
• Drive the device with the raised cleaning head over the new disc brush and lower the cleaning head.
  The brush locks into the drive.

Removing the waste water tank

• Drain off dirt water.
• Lift up the waste water tank and put it aside.

Batteries
Please observe the following warning notes when handling batteries:

| Observe the directions on the battery, 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

DANGER
Risk of explosion. Do not place tools or the like on the battery, i.e. on the terminal poles and cell connectors.
Risk of injury. Ensure that wounds never come into contact with lead. Always clean your hands after having worked with batteries.
Recommended batteries

| Order No.| Volume [m3} *| Air flow [m3/h] **
---|---|---|---
105 Ah – maintenance-free| 6.654141.0 1)| 2.64| 1.06
76 Ah – maintenance-free| 6.654093.0 2)| 1.82| 0.73
80 Ah, – low maintenance| 6.654290.0 3)| 6.6| 2.64

• Minimum volume of the battery chargingroom
  ** Minimum air flow between the battery charging room and the surroundings

The device requires 2 batteries

1. Complete set (24 V/105 Ah) incl. connecting cable, order no.4.035-449.0
2. Complete set (24 V/76 Ah) incl. connecting cable, order no.4.035-447.0
3. Complete set (24 V/80 Ah) incl. connecting cable, order no.4.035-990.0

Insert batteries and connect

• Drain off dirt water.
• Lift up the waste water tank and put it aside.
• Pull out the battery plug.

Battery 6.654-141.0

1. Spacer

Battery 6.654-093.0

1. Spacer

Battery 6.654-290.0

1. Spacer

• Insert the battery into the device as shown above.
• Insert the spacer between the battery and the device on the side indicated in the illustration.

CAUTION
When the batteries are installed and removed, the stability of the appliance can be compromised; ensure a safe stance.

• Connect pole using the enclosed connecting cable.
• Connect the connection cable to the free battery poles (+) and (-).

ATTENTION
If the polarity is reversed (positive and negative terminals), the control electronics are destroyed.
Pay attention to correct poles.

• Place the waste water tank on the appliance.

Note:
Charge the batteries before commissioningthe appliance.
See also “Charging the batteries”.
Removing the batteries

• Set the programme selector switch to “OFF”.
• Pull out the battery plug.
• Lift up the waste water tank and put it aside.
• Clamp off the minus pole of the battery.
• Clamp off the remaining cables from the battery.
• Remove the support blocks or the foam pieces.

CAUTION
When the batteries are installed and re- moved, the stability of the appliance can be compromised; ensure a safe stance.

• Remove the batteries.
• Dispose of the used batteries according to the local provisions.

Maintenance contract
To ensure a reliable operation of the appliance maintenance contracts can be concluded with the competent Kärcher sales office.

Frost protection

In case of danger of frost:

• Empty the fresh and waste water tank.
• Store the appliance in a frost-protected room.

Faults

DANGER
Risk of injury! Set the programme selector switch to “OFF” and pull the mains plug of the charger prior to performing any work on the appliance.
Remove the battery plug from machine.

• Drain and dispose of the dirt water and the residual fresh water.

Faults with display

required.
ERR T| Clean the float, if necessary call customer service.
LOW BAT| Charging battery
ERR TEMP| Allow device to cool down.
HandsOff| Release the safety switch and wait until the operating hours or the battery status are displayed. Then operate the safety switch again.
ERR REL| Set the programme selector switch to “OFF”, release the safety switch, wait for 3 seconds, restart. If the event recurs, call Customer Service.
ERR PWM| Call customer service.

Faults without display on the console

programme.
Operate the safety switch.
Insert battery plug.
Check battery; charge it if required.
Make sure that all battery terminals are connected.
Insufficient water quan- tity| Check fresh water level, refill tank if necessary.
Increase the water volume on the regulating knob for water volume.
Clean sieve.
Insufficient vacuum per- formance| Clean the seals between waste water tank and cover and check for tightness, replace if required.
Wastewater reservoir is full; shut off the appliance and empty the wastewater reservoir
Clean the fluff filter.
Clean the vacuum lips on the vacuum bar, replace if required
Check if the cover on the dirt water discharge hose is closed
Check the setting of the vacuum bar.
Check suction hose for blockages; clean if required.
Check the suction hose for tightness; replace if required.
Insufficient cleaning re- suit| Check the brushes for wear, replace if required.
Suction turbine is run- ning rough| Clean the swimmer.
Brush does not turn| Check if foreign objects block the brush; remove foreign object if required.
If over-current switch in the electronics system has been triggered, turn programme selection switch to “OFF”. Afterwards, set it back to the desired programme.
Vibrations during clean- ing| You might need to use a softer brush.
In case of faults that cannot be remedied using the table below please contact the customer service.

Cleaning the floater

• Open the cover of the waste water tank.

1. Swimmer casing
2. Lock hook
3. Float
4. Lower part

• Pull out the float casing towards the top.
• Detach locking hooks.
• Clean float and bottom part.
• Assemble the float casing and insert it into the device.

Accessories

cleaning tasks.
Disk brush, natural (white)| 4.905-027.0| Made of natural fibres for spot cleaning and polishing.
Disk brush, black (hard)| 4.905-029.0| For heavy soiling and for deep cleaning. For robust floorings only.
Driver plate pad| 4.762-534.0| For cleaning with pads. With quick change coupling and center lock.
Pad, red (medium soft)| 6.369-079.0| For cleaning and cleanering of all floors.
Pad, green (medium hard)| 6.369-078.0| For cleaning heavily soiled floors and for deep cleaning.
Pad, black (hard)| 6.369-077.0| With stubborn soiling and for deep cleaning.
Pad, beige (light grain)| 6.369-468.0| For polishing and refreshing of hard and flexible floorings.
Pad, beige (natural hair proportion)| 6.371-146.0
Suction bar, 850 mm, straight| 4.777-086.0
4.777-401.0|
Suction bar, 850 mm, bent| 4.777-411.0|
Set homebase box| 4.035-406.0|

Technical specifications

Power

Nominal voltage| V| 24
Battery capacity| Ah (5h)| 105/80/ 76
Average power consump- tion| W| 1100
Rated power suction tur- bine| W| 500
Rated power brush drive| W| 600
Vacuuming
Vacuum power, air vol- ume (max.)| 1/s| 24
Vacuuming power, nega- tive pressure (max.)| kPa (mbar)| 120
Cleaning brushes
Brush speed| 1/min| 155
Brush diameter| mm| 510
Dimensions and weights
Theoretical surface cleaning performance| m2/h| 2000
Max. working range in- cline| %| 2
Fresh/waste water tank volume| I| 50/50
Max. water temperature| °C| 60
Ambient temperature| °C| 5…40
Net weight (transport weight)| kg| 139/118.8/117.5
Total weight (ready to op- erate)| kg| 189/168.5/167
Dimensions of battery compartment| mm| 350 x 350
Values determined as per EN 6 335-2- 72
Total oscillation value| m/s2| <2.5
Uncertainty K| m/s2| 0.2
Sound pressure level Lr,A| dB(A)| 66
Uncertainty Ko| dB(A)| 2
Sound power level L„,,,, + Uncertainty K„,,,,| dB(A)| 81

Spare parts

Only use original accessories and spare  parts, they ensure the safe and trouble-free operation of the device.
For information about accessories and spare parts, please visit www.kaercher.com.

THANK YOU!
Register your product and benefit from many advantages.
www.kaercher.com/welcome 
Rate your product and tell us your opinion.
www.kaercher.com/dealersearch
Alfred Kärcher SE & Co. KG
Alfred-Kärcher-Str. 28-40
71364 Winnenden (Germany)
Tel.: +49 7195 14-0
Fax: +49 7195 14-2212[ http://kaer.ch/er/?l=TwSoJtl9IUOwZyAe1rHDyw**](http://kaer.ch/er/?l=TwSoJtl9IUOwZyAe1rHDyw)**

Documents / Resources

| KARCHER BD 50/50 Bp Classic 20 Inch Walk Behind Floor Scrubber [pdf] Instruction Manual
BD 50 50 Bp Classic 20 Inch Walk Behind Floor Scrubber, BD 50 50 Bp Classic, 20 Inch Walk Behind Floor Scrubber, Behind Floor Scrubber, Floor Scrubber, Scrubber
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References

• Cleaning equipment and pressure washers | Kärcher International
• Dealer Search | Kärcher International
• Home and Garden Warranty Registration USA - Kärcher
• Reinigungsgeräte und Hochdruckreiniger | Kärcher
• Reinigungsgeräte und Hochdruckreiniger | Kärcher
• Reinigungsgeräte und Hochdruckreiniger | Kärcher

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