How to improve poor braking effect on Kärcher BR 120 RI?
To improve a poor braking effect on your Kärcher Floor Machine: – Test the electromagnetic brake (Y1) and adjust or replace if necessary, using test mode. – Test the driving module printed circuit board (A2) and replace if necessary, using test mode.
What to do if Kärcher Floor Machine raises dust or does not vacuum (RI version)?
If your Kärcher Floor Machine (RI version with pre-sweeping unit) raises dust or doesn't vacuum: – Check and replace the side brush and main brush if needed. – Verify the direction of rotation of the main brush and properly connect the electrical connecting cables (plus/minus). – Check and replace the seal of the filter case of the debris container if needed. – Check and replace the round filter if needed. – Check, adjust, or replace sealing lips/strips. – Check and replace the fan drive belt if needed. – Check and adjust the pre-sweeping unit for parallelism. – Check and replace the clean module pre-sweeping system (F6) safety lock if needed. – Check and replace the fan motor (M13) if needed. – Check and replace the clean module pre-sweeping system (A3/1) if needed.
What to do if side brushes cannot be lifted or lowered on Kärcher Floor Machine (RI version)?
If the side brushes on your Kärcher Floor Machine (RI version with pre-sweeping unit or side brush option) cannot be lifted or lowered: – Check for any mechanical blockage and repair it. Check the function of the side brush suspension (spring, Bowden cable, deflection pulley). – Check and replace the side brush lift module (F8) safety lock if needed. – Check and replace the pre-sweeping system (S6) switch if needed. – Check and replace the program switch (S9) if needed. – Check and replace the micro-switch of the lower side brush (S40) if needed. – Check and replace the micro-switch of the upper side brush (S41) if needed. – Check and replace the lifting motor of the side brush (M40) if needed. – Check and replace the lift module of the side brush (A4/1) if needed.
General| Brand | Kärcher |
|---|---|
| Model | BR 120 RI |
| Category | Floor Machine |
| Language | English |
Introduction to the service manual, emphasizing training and documentation.
Details the technical specifications of the BR/BD 100/250 R model.
Details the technical specifications of the BR/BD 100/250 RI model.
Details the technical specifications for the 120/250 R and RI models.
Diagram identifying components from the left side of the machine.
Diagram identifying components from the right side of the machine.
Diagram identifying components from the rear of the machine.
Detailed explanation and diagram of the wheel hub motor and its components.
Description and diagrams of the brush head assembly for BR and BD versions.
Detailed description and diagrams of the suction beam and its components.
Details on the suction motor, its function, and location.
Overview of the water system components, including filters and pumps.
Details on the optional dirty water tank with recycling capabilities.
Identification and function of all buttons and indicators on the control panel.
Explanation of the program switch positions and their functions.
Description of the seat sensor safety function and distribution box components.
Details on the battery system, including filling and connections.
Information on the battery charger, its operation, and indicator lights.
Description of the optional side brush system and its components.
Overview of the pre-sweeper unit for the RI version.
Instructions for adjusting the pre-sweeper unit parallelogram for proper parallelism.
Details on the control panel specific to the pre-sweeper unit.
Illustration showing the internal components when the housing cover is open.
Instructions on how to remove the round filter from the filter case.
Details on the filter shaker motor and its location.
Description of the impeller fan system, including belt and motor.
Details on the lifting motor and Bowden cables for the main and side brushes.
Description of the main brush motor, drive shaft, belt, and pulley.
Diagram and explanation of the retainer and tensioning system for the main brush.
Instructions for adjusting the sealing strip height relative to the floor.
Description of the coarse dirt flap and its components.
Diagram showing the arrangement of the machine's pedals.
Schematic illustrating the functional flow of the machine's systems.
Details on the mounting components of the brush head for BR and BD versions.
Explanation of how brush contact pressure is adjusted via the lifting motor.
Functional diagram specific to the pre-sweeper unit on the RI model.
Overview of operator functions and the service program availability.
Description of operator functions, available settings, and test modes.
Detailed flowchart for initial operation and accessing the information menu.
Flowchart for initial operation and information menu for older versions.
Flowchart detailing the driving function without cleaning components active.
Flowchart for driving function in older versions.
Flowchart describing the wet scrubbing operation with suction.
Flowchart describing the wet scrubbing operation without suction.
Flowchart for the suction-only operation mode.
Flowchart for polishing operation without suction.
Flowchart for polishing operation with suction.
Description of the optional hand cleaning function with accessories.
Table detailing manufacture settings for operator functions based on program switch.
Diagram illustrating the interconnection of various electronic modules.
Block diagram showing the modular system configuration for the BR/BD 100/250 R.
Block diagram of the modular system with the optional side brush.
Block diagram of the modular system for the BR/BD 100/250 RI.
Procedure for emergency driving operation in case of module failure.
Diagram showing control panel components from below, including CPU and info modules.
Diagrams and identification of the lifting and accessories modules.
Diagrams and identification of the driving and cleaning modules.
Diagrams and identification of optional lifting and cleaning modules.
Description of the service module for diagnostics, parameterization, and firmware updates.
Procedure to access the test mode using program switch S9 position 1.
Procedure to access the test mode using program switch S9 position 2.
Procedure for measuring current with the on/off function in test mode.
Procedure to access the test mode using program switch S9 position 3.
Procedure to access the test mode using program switch S9 position 4.
Procedure to access the test mode using program switch S9 position 5.
Step-by-step guide for calibrating the accelerator pedal.
Procedure for testing all illuminated symbols and LEDs on the display.
How to access and navigate the service-operator menu for diagnostics and settings.
Procedure to access the test mode for original software versions.
Tests for the drive units, including motor and pump functions.
Tests for the lifting motors, including their movement and limit switch functions.
Calibration tests for various machine functions.
Procedure to access the setup menu for revised software versions.
Accessing and adjusting system and driving module parameters.
Accessing and adjusting cleaning and lifting module parameters.
Procedure to access the setup menu for original software versions.
Navigating system and driving module setup menus.
Adjusting system and driving module parameters for original software.
Adjusting cleaning and lifting module parameters for original software.
Procedure for saving modified adjustable parameters.
Instructions for loading backup operating hours from the cleaning module.
Table of manufacture settings and factory defaults for various modules.
Details on specific manufacture settings for options like chemical metering and warning lights.
Description and diagrams of the steering column and head components.
Procedure for adjusting microswitches and checking the suction beam lifting motor.
Instructions for adjusting the brush head lifting motor and its limit positions.
Routine maintenance tasks for the brush head, including roller and belt replacement.
Guidance on checking and removing foreign matter from brush rollers.
Instructions for checking and adjusting the splash guard strips.
Procedure for checking and adjusting the brush pattern for parallel and symmetrical results.
Steps to adjust the brush pattern for proper floor contact.
Procedure for adjusting the drive sensor and its automatic calibration.
Instructions for checking and replacing carbon brushes in the wheel hub motor.
Step-by-step guide for replacing the tires on the wheel hub motor.
Procedure for removing, checking, and adjusting the electromagnetic brake.
Instructions for checking and setting the freewheeling lever and brake air gap.
Detailed steps for checking and setting the electromagnetic brake air gap.
Procedure for adjusting the rear wheel brakes for uniform braking.
Table listing components and their recommended replacement intervals.
Guidance for troubleshooting faults not indicated on the display.
Steps to diagnose and resolve issues when the unit fails to start.
Troubleshooting steps for low water volume issues.
Diagnosing and resolving low suction performance and tank overflows.
Interpreting and resolving faults indicated by display messages and error codes.
Explanation of the structure and meaning of warning messages displayed by the machine.
Decoding the 3-digit error codes for various system functions.
List of error codes and troubleshooting actions for the drive module.
List of error codes and troubleshooting actions for the accessories module.
Error messages and troubleshooting for lifting and cleaning modules.
Error messages and troubleshooting actions for the Head CPU module.
Understanding the display patterns for module error codes and significant errors.
Details of significant errors related to the Head CPU module.
Details of significant errors related to the Drive module.
Details of significant errors related to the Cleaning module.
Details of significant errors related to the Lifting module.
Details of significant errors related to the Accessories module.
Scheduled maintenance tasks based on working hours.
Specific maintenance instructions for the RI version of the machine.
Electrical circuit diagram for the Head CPU module (A1).
Revised electrical circuit diagram for the Head CPU module (A1).
Circuit diagram for the Driving module (A2).
Circuit diagram for the Cleaning module (A3).
Circuit diagram for the cleaning module of the pre-sweeper unit (A3/1).
Circuit diagram for the Lifting module (A4).
Circuit diagram for the lifting module - side brush (A4/1).
Circuit diagram for the lifting module - pre-sweeper unit (A4/2).
Circuit diagram for the Accessory module (A5).
List of components and their corresponding circuit diagram references.
Table of unit types, unit numbers, circuit diagrams, operating instructions, and spare parts.
List of special tools required for maintenance and repair.
Specifications for tightening torques of various bolts and nuts.
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