Kärcher BR 250 R User Manual (English)

Questions and Answers:

D
dowensAug 22, 2025
What to do if the suction motor won't run on my Kärcher BR 250 R?
- K
  Kimberly MendezAug 22, 2025
  If the suction motor on your Kärcher Floor Machine isn't running, consider these possible solutions: – Ensure the suction beam is not raised. – Check if the dirty water tank is full. – Check and replace fuse (F3) if necessary. – Test and replace the float switch (S12) if necessary, using test mode. – Test and replace the program selector switch (S9) if necessary. – Test and replace the suction motor (M4) if necessary, using test mode. – Check cable connections, removing any defective cables. – Test the cleaning module printed circuit board (A3) and replace if necessary, using test mode.
K
Kathy MarshallAug 25, 2025
What causes poor suction performance in a Kärcher BR 250 R Floor Machine?
- J
  John WrightAug 25, 2025
  If you're experiencing poor suction performance with your Kärcher Floor Machine, here are some things to check: – Make sure the air intake cover on the dirty water tank isn't blocked; clean it if it is. – Check, clean, or replace the seal on the cover of the dirty water tank. – Clean, turn, or replace the rubber strips on the suction beam. – Check and replace the suction hose if needed. – Check and adjust the suction beam setting. – Test the microswitch (S30, S31) of the lifting motor (M30), adjust or replace if necessary, using test mode.
K
kathryn61Aug 27, 2025
How to resolve poor cleaning result with Kärcher Floor Machine?
- S
  sherrimolinaAug 28, 2025
  To address poor cleaning results with your Kärcher Floor Machine: – Inspect brush rollers for any foreign objects and remove them. – Test and adjust the contact pressure of the brush rollers using test mode. – Check if the suction performance is too low. – Verify that there is sufficient water supply. – Ensure that enough cleaning agent is being supplied.
T
Tim FriedmanAug 29, 2025
Why is the suction motor not switching off after the after-running time on my Kärcher BR 250 R?
- J
  Jonathon BradyAug 29, 2025
  If the suction motor on your Kärcher Floor Machine doesn't switch off after the after-running time, consider these possible causes: – The float switch may be blocked or defective (only fully active for dirt container). – The limit switch of the suction beam lifting motor (S20, S21) may be defective; replace it if necessary. – Test the cleaning module printed circuit board (A3) and replace if necessary, using test mode.
J
johnnymahoneyAug 31, 2025
Why is the dirty water tank overflowing on my Kärcher BR 250 R Floor Machine?
- M
  Michael FlemingAug 31, 2025
  If the dirty water tank on your Kärcher Floor Machine is overflowing: – Check and replace fuse (F3) if necessary. – Test the dirty water tank float switch (S11) and replace if necessary, using test mode. – Check cable connections and replace defective cables. – Test the cleaning module printed circuit board (S3) and replace if necessary, using test mode.
B
Brianna MorrisSep 2, 2025
What causes noises in the area of the wheel hub motor of Kärcher BR 250 R Floor Machine?
- G
  gregory76Sep 2, 2025
  To address noises in the wheel hub motor area of your Kärcher Floor Machine: – Adjust the castellated nut. – Check and replace the steering bearing if necessary.
Z
zwallaceSep 3, 2025
What to do if there is no or too little cleaning agent supplied by Kärcher Floor Machine?
- R
  Randy WeberSep 4, 2025
  If your Kärcher Floor Machine is not supplying enough cleaning agent, try the following: – Check the hose to the brush head for blockages or kinks and remove them. – Check and replace the fuse (F3) if necessary. – Test the chemical tank float switch (optional) (S12) and replace if necessary, using test mode. – Test the program selector switch (S9) and replace if necessary, using test mode. – If equipped, clean the flow meter of the chemical pump (M6) if it's contaminated. – Test the chemical pump (M6) (optional) and replace if necessary, using test mode. – Check cable connections and replace defective connections. – Test the cleaning module printed circuit board (A3) and replace if necessary.
C
Cathy JohnsonSep 5, 2025
What to do if the suction beam cannot be raised or lowered on a Kärcher BR 250 R?
- S
  Susan ReynoldsSep 6, 2025
  If the suction beam on your Kärcher Floor Machine cannot be raised or lowered: – Check and replace fuse (F4) if necessary. – Ensure the lifting mechanism is not blocked. – Test the microswitch (S30, S31) and replace if necessary, using test mode. – Test the program selector switch (S9) and replace if necessary, using test mode. – Test the lifting motor (M30) and replace if necessary, using test mode. – Check cable connections and replace defective cables. – Test the lifting module printed circuit board (A4) and replace if necessary, using test mode.
J
Jessica MathisSep 7, 2025
What to do if the brush head cannot be raised or lowered on a Kärcher Floor Machine?
- S
  spayneSep 7, 2025
  If the brush head on your Kärcher Floor Machine cannot be raised or lowered: – Check and replace fuse (F4) if necessary. – Ensure the lifting mechanism is not blocked. – Test the program selector switch (S9) and replace if necessary, using test mode. – Test the lifting motor (M20) and replace if necessary, using test mode. – Test the lifting module printed circuit board (A4) and replace if necessary, using test mode.
D
David RivasSep 9, 2025
Why won't the brush motor start on my Kärcher Floor Machine?
- J
  Jasmine JuarezSep 9, 2025
  If the brush motor on your Kärcher Floor Machine isn't starting: – Check and replace fuse (F3) if necessary. – Test the brush motor (M2, M3) and replace if necessary, using test mode. – Check cable connections and remove defective cables. – Test the cleaning module printed circuit board (A3) and replace if necessary, using test mode.

Kärcher BR 250 R Specifications

General

Brand	Kärcher
Model	BR 250 R
Category	Floor Machine
Language	English

Summary

Foreword

Equipment Features

Technical Features (BR/BD 100/250 R)

Details the technical specifications for the BR/BD 100/250 R model, covering drive system, sweeping system, and electrical system.

Technical Features (BR/BD 100/250 RI)

Details the technical specifications for the BR/BD 100/250 RI model, highlighting its pre-sweeping unit and differences from the R version.

Technical Features (BR/BD 120/250 R, BR/BD 120/250 RI)

Details technical specifications for BR/BD 120/250 R and RI models, including Bp and BP Pack versions and working width.

View from the Left-Hand Side

Illustrates and labels key components of the machine visible from the left-hand side.

View from the Right-Hand Side

Illustrates and labels key components of the machine visible from the right-hand side.

Rear View

Illustrates and labels key components of the machine visible from the rear.

Technical Features

Wheel Hub Motor (M1)

Describes the wheel hub motor, including its components, freewheeling lever, and notes on transport.

Brush Head

Details the brush head components for BR and BD versions, including mounting parts and lifting motor.

Suction Beam

Describes the suction beam, its components, rubber strips, and lifting mechanism.

Suction Motor (M4)

Explains the function and location of the suction motor, including removal steps.

Water System

Details the water filter, water pump, cleaning agent metering pump, and optional cleaning agent canister.

Dirty Water Tank with Recycling Function (Optional)

Describes the dirty water tank, float switch, and the optional recycling mode lever.

Control Panel

Illustrates and lists the functions of various buttons, switches, and indicators on the control panel.

Program Switch (S9)

Explains the 8 switching positions of the program switch and their corresponding functions.

Seat Sensor (S10) and Distribution Box (EXT.X1)

Describes the integrated seat sensor safety function and the distribution box connections.

Battery (Low-Maintenance) with Filling System

Details the battery configuration, filling system, and central plug connections.

Battery Charger

Provides operating instructions and indicator light explanations for the battery charger.

Side Brush (Optional)

Illustrates the side brush suspension, motors, and optional features.

Pre-sweeper Unit (BR/BD 100/250 RI only)

Details the pre-sweeper unit, its components, and its integration with the machine.

Unit Functions

Functional Diagram

Provides a schematic overview of the machine's functional components and their interconnections.

Brush Head Mounting Parts

Details the mounting components for the brush head, distinguishing between BR and BD versions.

Brush System - Contact Pressure Adjustment

Explains how brush contact pressure is adjusted via the lifting motor and current consumption.

Pre-sweeper Unit Functional Diagram (BR/BD 100/250 RI only)

Illustrates the functional diagram of the pre-sweeper unit for RI models.

Operator and Service Program Overview

Outlines operator functions, service program availability, and the function of info buttons.

Operator Functions

Details operator functions, test modes for service technicians, and display modes.

Modular Electronic Control Circuits

Provides an overview of the modular system and its network configuration.

Modular System BR/BD 100/250 R

Illustrates the modular system architecture for the BR/BD 100/250 R basic unit.

Modular System BR/BD 100/250 R with Side Brush (Optional)

Illustrates the modular system for BR/BD 100/250 R with an optional side brush.

Modular System BR/BD 100/250 RI

Illustrates the modular system architecture for the BR/BD 100/250 RI model.

Emergency Operation (Driving)

Explains emergency driving procedures by connecting the drive module directly to the head CPU.

Control Panel Components

Shows the view from below of the control panel, highlighting the warning/information and head CPU modules.

Lifting Module (A4) and Accessories Module (A5)

Details the lifting module (A4) and accessories module (A5), including their terminal strips and PCBs.

Driving Module (A2) and Cleaning Module (A3)

Details the driving module (A2) and cleaning module (A3), including their printed circuit boards and connections.

Lifting Module (A4/1) and Cleaning Module (A3/1) (Optional)

Details optional lifting module (A4/1) and cleaning module (A3/1), including PCBs and connections.

Service Module (A9)

Describes the service module for diagnostics, parameterization, and firmware updates.

Basic Settings and Service Procedures

Test Mode (Head CPU from Version 1.2)

Details accessing the test mode for machines with head CPU version 1.2.

Access to the Test Mode (with Program Switch S9, Position 1)

Procedure for accessing test mode using program switch S9 position 1 (Drive).

Access to the Test Mode (with Program Switch S9, Position 2)

Procedure for accessing test mode using program switch S9 position 2 (Scrub-Vacuum).

Current Measurement with Switching On/Off Function

Describes how to measure current and perform on/off functions for components in test mode.

Access to the Test Mode (with Program Switch S9, Position 3)

Procedure for accessing test mode using program switch S9 position 3 (Wet Scrub).

Access to the Test Mode (with Program Switch S9, Position 4)

Procedure for accessing test mode using program switch S9 position 4 (Vacuum).

Access to the Test Mode (with Program Switch S9, Position 5)

Procedure for accessing test mode using program switch S9 position 5 (Polish).

Accelerator Pedal Calibration

Step-by-step guide for calibrating the accelerator pedal in test mode.

Illuminated Symbol Test

Procedure for testing all illuminated symbols and LEDs on the machine.

Service-Operator Menu

Details how to access and navigate the service-operator menu for diagnostics and parameter setup.

Test Mode (Head CPU up to Version 1.1)

Details accessing the test mode for machines with head CPU version up to 1.1.

Access to the Test Mode ORIGINAL

Procedure for accessing the test mode with the original settings.

Test Mode - Drive Units

Details testing individual drive units (motors, pumps, valves) via the program switch.

Test Mode - Lifting Motors

Details testing lifting motors for brush head and suction beam via the program switch.

Test Mode - Calibration

Details performing calibration tests for various machine functions.

Setup Menu

Provides access to machine setup menus for parameter configuration.

Setup Menu (Head CPU from Version 1.2)

Details accessing the setup menu for machines with head CPU version 1.2.

Access to the Setup Menu

Procedure for accessing the main setup menu via the info button.

System Menu and Driving Module Parameters

Details system and driving module parameters accessible through the setup menu.

Cleaning Module and Lifting Module Parameters

Details cleaning and lifting module parameters accessible through the setup menu.

Setup Menu (Head CPU up to Version 1.1)

Details accessing the setup menu for machines with head CPU version up to 1.1.

Access to the Setup Menu ORIGINAL

Procedure for accessing the setup menu with original settings.

System Menu and Driving Module Parameters ORIGINAL

Details system and driving module parameters with original settings.

Cleaning Module and Lifting Module Parameters ORIGINAL

Details cleaning and lifting module parameters with original settings.

Save Changed Adjustable Parameters

Procedure for saving adjusted parameters and navigating the save menu.

Load Backup Operating Hours Counter

Procedure for loading backup operating hours from the cleaning module.

Module Parameter Manufacture Settings

Provides manufacture settings for various modules like lift, clean, and driving modules.

Service Procedures

Details various service procedures for the machine's components.

Steering

Describes the steering column, steering head, and wheel hub motor connections.

Lifting Motor - Suction Beam (M30)

Explains how to adjust microswitches for the suction beam lifting motor.

Lifting Motor - Brush Head (M20)

Details adjusting upper and lower limit positions for the brush head lifting motor.

Brush Head - Maintenance Work

Covers maintenance tasks for the brush head, including replacing rollers, brushes, and drive belts.

Drive Sensor (B1)

Describes how to adjust the drive sensor and notes on proper installation.

Wheel Hub Motor Tyres (M1)

Details checking and replacing carbon brushes for the wheel hub motor.

Magnet Brake (Y1)

Explains how to remove, check, and set the electromagnetic brake and freewheeling lever.

Rear Wheel Brake

Describes how to adjust the rear wheel brakes for uniform and symmetrical braking.

Replacement Intervals

Lists components and their recommended replacement intervals in operating hours.

Troubleshooting

Troubleshooting Without Displays

Provides troubleshooting steps for faults that do not appear on the display.

Unit Won't Start

Troubleshooting steps for when the unit fails to start, checking power and switches.

Water Volume Too Low

Troubleshooting steps for insufficient water supply, checking tanks, filters, and hoses.

Suction Performance Too Low / Dirty Water Tank Overflows

Troubleshooting steps for low suction performance and dirty water tank overflows.

Troubleshooting With Displays

Guidance on interpreting and troubleshooting error messages displayed on the machine.

Drive Module (A2) Error Messages

Lists specific error codes for the drive module (A2) and their corresponding actions.

Accessories Module (A5) Error Messages

Lists specific error codes for the accessories module (A5) and their corresponding actions.

Lifting Module (A4) and Cleaning Module (A3) Error Messages

Lists specific error codes for lifting (A4) and cleaning (A3) modules and their actions.

Head CPU (A1) Error Messages

Lists specific error codes for the Head CPU module (A1) and their corresponding actions.

Error Memory

Explains how to interpret module error codes and display patterns.

Module Error Codes – Display Pattern

Details the format and meaning of module error codes and the buffer of past events.

Significant Errors (Head CPU Module A1)

Lists significant errors related to the Head CPU module (A1) and their potential causes.

Significant Errors (Drive Module A2)

Lists significant errors related to the Drive module (A2) and their potential causes.

Significant Errors (Cleaning Module A3)

Lists significant errors related to the Cleaning module (A3) and their potential causes.

Significant Errors (Lifting Module A4)

Lists significant errors related to the Lifting module (A4) and their potential causes.

Significant Errors (Accessories Module A5)

Lists significant errors related to the Accessories module (A5) and their potential causes.

Maintenance Work

Maintenance Operations After Working Hours

Lists routine maintenance tasks to be performed after working hours, categorized by interval.

Circuit Diagrams

Circuit Diagram 0.088-734.0 ORIGINAL, Head CPU (A1)

Presents the circuit diagram for the Head CPU (A1) module (original version).

Circuit Diagram 0.088-876.0 REVISED, Head CPU (A1)

Presents the circuit diagram for the Head CPU (A1) module (revised version).

Circuit Diagram (Driving Module (A2))

Presents the circuit diagram for the Driving module (A2).

Circuit Diagram (Cleaning Module (A3))

Presents the circuit diagram for the Cleaning module (A3).

Circuit Diagram (Cleaning Module - Pre-sweeper Unit (A3/1))

Presents the circuit diagram for the optional Cleaning module (A3/1) for the pre-sweeper unit.

Circuit Diagram (Lifting Module (A4))

Presents the circuit diagram for the Lifting module (A4).

Circuit Diagram (Lifting Module - Side Brush (A4/1))

Presents the circuit diagram for the optional Lifting module (A4/1) for the side brush.

Circuit Diagram (Lifting Module - Pre-sweeper Unit (A4/2))

Presents the circuit diagram for the optional Lifting module (A4/2) for the pre-sweeper unit.

Circuit Diagram (Accessory Module (A5))

Presents the circuit diagram for the Accessory module (A5).

Circuit Diagram Listing

Provides a list of components and their references used in the circuit diagrams.

Technical Specifications

Special Tools

Tightening Torques

Index

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Kärcher BR 250 R User Manual

Table of Contents

Questions and Answers:

Kärcher BR 250 R Specifications

Summary

Foreword

Equipment Features

Technical Features (BR/BD 100/250 R)

Technical Features (BR/BD 100/250 RI)

Technical Features (BR/BD 120/250 R, BR/BD 120/250 RI)

View from the Left-Hand Side

View from the Right-Hand Side

Rear View

Technical Features

Wheel Hub Motor (M1)

Brush Head

Suction Beam

Suction Motor (M4)

Water System

Dirty Water Tank with Recycling Function (Optional)

Control Panel

Program Switch (S9)

Seat Sensor (S10) and Distribution Box (EXT.X1)

Battery (Low-Maintenance) with Filling System

Battery Charger

Side Brush (Optional)

Pre-sweeper Unit (BR/BD 100/250 RI only)

Unit Functions

Functional Diagram

Brush Head Mounting Parts

Brush System - Contact Pressure Adjustment

Pre-sweeper Unit Functional Diagram (BR/BD 100/250 RI only)

Operator and Service Program Overview

Operator Functions

Modular Electronic Control Circuits

Modular Electronic Control Circuits

Modular System BR/BD 100/250 R

Modular System BR/BD 100/250 R with Side Brush (Optional)

Modular System BR/BD 100/250 RI

Emergency Operation (Driving)

Control Panel Components

Lifting Module (A4) and Accessories Module (A5)

Driving Module (A2) and Cleaning Module (A3)

Lifting Module (A4/1) and Cleaning Module (A3/1) (Optional)

Service Module (A9)

Basic Settings and Service Procedures

Test Mode (Head CPU from Version 1.2)

Access to the Test Mode (with Program Switch S9, Position 1)

Access to the Test Mode (with Program Switch S9, Position 2)

Current Measurement with Switching On/Off Function

Access to the Test Mode (with Program Switch S9, Position 3)

Access to the Test Mode (with Program Switch S9, Position 4)

Access to the Test Mode (with Program Switch S9, Position 5)

Accelerator Pedal Calibration

Illuminated Symbol Test

Service-Operator Menu

Test Mode (Head CPU up to Version 1.1)

Access to the Test Mode ORIGINAL

Test Mode - Drive Units

Test Mode - Lifting Motors

Test Mode - Calibration

Setup Menu

Setup Menu (Head CPU from Version 1.2)

Access to the Setup Menu

System Menu and Driving Module Parameters

Cleaning Module and Lifting Module Parameters

Setup Menu (Head CPU up to Version 1.1)

Access to the Setup Menu ORIGINAL

System Menu and Driving Module Parameters ORIGINAL

Cleaning Module and Lifting Module Parameters ORIGINAL

Save Changed Adjustable Parameters

Load Backup Operating Hours Counter

Module Parameter Manufacture Settings

Service Procedures

Steering

Lifting Motor - Suction Beam (M30)

Lifting Motor - Brush Head (M20)

Brush Head - Maintenance Work

Drive Sensor (B1)

Wheel Hub Motor Tyres (M1)