
ENGLISH
Service Manual - CR 28 BOOST®1
TABLE OF CONTENTS
GENERAL INFORMATION............................................................................................................................. 3
CONVENTIONS .............................................................................................................................................................................. 3
MACHINE LIFTING ........................................................................................................................................................................ 3
MACHINE TRANSPORTATION ..................................................................................................................................................... 3
OTHER AVAILABLE MANUALS .................................................................................................................................................... 3
SAFETY ......................................................................................................................................................................................... 4
SYMBOLS ..................................................................................................................................................................................... 4
GENERAL INSTRUCTIONS .......................................................................................................................................................... 4
SYMBOLS SHOWN ON THE MACHINE......................................................................................................................................... 5
TECHNICAL DATA ......................................................................................................................................................................... 6
MAINTENANCE ............................................................................................................................................ 7
SCHEDULED MAINTENANCE ..................................................................................................................................................... 7
SCHEDULED MAINTENANCE TABLE ......................................................................................................................................... 7
MACHINE NOMENCLATURE ....................................................................................................................................................... 8
DETERGENT SUPPLY SYSTEM................................................................................................................. 12
SOLUTION SYSTEM AND TANK CLEANING ............................................................................................................................. 12
SOLUTION FILTER CLEANING .................................................................................................................................................. 12
SOLUTION SYSTEM SOLENOID VALVE/TAP/FILTER DISASSEMBLY/ASSEMBLY ................................................................ 13
TROUBLESHOOTING ................................................................................................................................................................. 15
BRUSHING SYSTEM .................................................................................................................................. 16
BRUSH CLEANING ..................................................................................................................................................................... 16
SIDE SKIRT CHECK AND REPLACEMENT ................................................................................................................................ 16
BRUSH DECK LIFTING/LOWERING ACTUATOR DISASSEMBLY/ASSEMBLY ....................................................................... 17
TROUBLESHOOTING ................................................................................................................................................................. 19
RECOVERY WATER SYSTEM ................................................................................................................... 20
RECOVERY WATER TANK AND VACUUM Screen AUTOMATIC SHUT-OFF FLOAT CLEANING ........................................... 20
VACUUM SYSTEM MOTOR FILTER CLEANING........................................................................................................................ 21
VACUUM SYSTEM MOTOR ELECTRICAL INPUT CHECK ....................................................................................................... 21
VACUUM SYSTEM MOTOR CARBON BRUSH CHECK AND REPLACEMENT ....................................................................... 22
VACUUM SYSTEM MOTOR DISASSEMBLY/ASSEMBLY ......................................................................................................... 23
SQUEEGEE CLEANING/CHECK AND BLADE REPLACEMENT................................................................................................ 24
SQUEEGEE LIFTING CABLE SLIDING SHOE LUBRICATION................................................................................................... 25
SQUEEGEE LIFTING ACTUATOR DISASSEMBLY/ASSEMBLY ............................................................................................... 26
SQUEEGEE LIFTING CABLE DISASSEMBLY/ASSEMBLY ....................................................................................................... 27
TROUBLESHOOTING ................................................................................................................................................................. 28
PARKING BRAKE SYSTEM ....................................................................................................................... 29
PUSHING/TOWING THE MACHINE ............................................................................................................................................ 29
PARKING BRAKE CHECK .......................................................................................................................................................... 29
ELECTROMAGNETIC BRAKE AND DISC WITH BRAKING MASSES DISASSEMBLY/ASSEMBLY ........................................ 30
TROUBLESHOOTING ................................................................................................................................................................. 32
DRIVE SYSTEM .......................................................................................................................................... 33
DRIVING WHEEL COVER DISASSEMBLY/ASSEMBLY ............................................................................................................ 33
DRIVE SYSTEM MOTOR ELECTRICAL INPUT CHECK ............................................................................................................ 33
DRIVE SYSTEM MOTOR CARBON BRUSH CHECK AND REPLACEMENT ............................................................................ 36
DRIVE SYSTEM MOTOR SLIDING CONTACT CHECK AND REPLACEMENT ......................................................................... 37
DRIVE SYSTEM MOTOR, BEARING AND GASKET DISASSEMBLY/ASSEMBLY ................................................................... 39
FORWARD GEAR PEDAL DISASSEMBLY/ASSEMBLY ............................................................................................................ 42
FORWARD GEAR PEDAL POTENTIOMETER CHECK AND ADJUSTMENT ............................................................................ 43
SPEED REDUCTION SENSOR CHECK/ADJUSTMENT ........................................................................................................... 44
SPEED REDUCTION SENSOR REPLACEMENT ...................................................................................................................... 45
DRIVER’S SEAT SAFETY MICROSWITCH OPERATION CHECK ............................................................................................ 47
DRIVER’S SEAT SAFETY MICROSWITCH REPLACEMENT .................................................................................................... 47
TROUBLESHOOTING ................................................................................................................................................................. 48