Nilfisk-Advance 56390900 User manual

5/10 Revised 12/17 FORM NO. 56043136
SERVICE MANUAL
Adgressor™
Adgressor™AXP™, Adgressor™EcoFlex™
BR 850S, BR 1050S
BR 850S EDS™, BR 1050S EDS™
BR 850S EcoFlex™, BR 1050S EcoFlex™
Advance MODELS: 56390900(2820D), 56390904(3220D), 56390902(2820C), 56390906(3220C)
56390908(3520D), 56390912(3820D), 56390910(3520C), 56390914(3820C),
56390903(2820C-AXP), 56390901(2820D-AXP), 56390907(3220C-AXP), 56390905(3220D-AXP),
56390911(3520C-AXP), 56390909(3520D-AXP), 56390915(3820C-AXP), 56390913(3820D-AXP)
56381000(X2820D), 56381002(X3220D), 56381004(X3520D), 56381006(X3820D)
56381001(X2820C), 56381003(X3220C), 56381005(X3520C), 56381007(X3820C)
Nilsk MODELS: 56390916(850S), 56390919(850SC), 56390921(1050S), 56390923(1050SC)
56390924(1050SC EDS), 56390922(1050S EDS), 56390920(850SC EDS), 56390918(850S EDS)
56381008(850S X), 56381010(1050S X), 56381009(850SC X), 56381011(1050SC X)

2- FORM NO. 56043136 - Adgressor™/ BR 850S, BR 1050S
CONTENTS
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Parts and Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Name Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Transporting The Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Other Manuals Available . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Cautions And Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Symbols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
General Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General Specications Common to All Models . . . . . . . . . . . . . . . . . . . . . 7
Specications Common to Deck Size . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Lubricating the Machine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Batteries and Chargers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Wheel Drive Motor Grease Specication . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Know Your Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Overall Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Control Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Functional Description Of Control Buttons: . . . . . . . . . . . . . . . . . . . . . . 14
Description of Indicators on the Control Panel: . . . . . . . . . . . . . . . . . . . . 16
Description of the Battery Condition Indicators . . . . . . . . . . . . . . . . . . . . 17
Description Of Hourmeter / Status Display . . . . . . . . . . . . . . . . . . . . . . 17
Steering System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Steering Column Assembly Shroud Removal . . . . . . . . . . . . . . . . . . . . . . . .18
Steering Chain Removal and Tensioning . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Wheel Drive System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
General Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Drive Motor System Controller Function Overview . . . . . . . . . . . . . . . . . . . . 20
Drive Mode Selection Operation Overview . . . . . . . . . . . . . . . . . . . . . . . . . 20
The Speed Selector Circuit Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Low Current A1 Speed Control Pin Key Detail . . . . . . . . . . . . . . . . . . . . . . .23
Wheel Drive Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Steering Spindle and Wheel Drive Motor Assembly Removal . . . . . . . . . . . . . . .24
Drive Tire Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Brake Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Drive Wheel Brake Strap Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Wheel Drive Motor Carbon Brush Inspection (500 hours) . . . . . . . . . . . . . . . . . 27
Potentiometer Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Potentiometer Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Drive Pedal Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Scrub Brush System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
Scrub Brush System Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Scrub Brush Deck Removal (Disc & Cylindrical) . . . . . . . . . . . . . . . . . . . . . .32
Scrub Brush Motor Assembly Removal (Disc) . . . . . . . . . . . . . . . . . . . . . . . 33
Scrub Brush Gearbox Removal And Output Shaft Replacement (Disc) . . . . . . . . . . 33
Scrub Brush Side Skirt Replacement (Disc) . . . . . . . . . . . . . . . . . . . . . . . . 34
Side Skirt Height Adjustment (Disc) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Scrub Brush Deck Front/Rear Skirt Replacement (Disc). . . . . . . . . . . . . . . . . .34
Brush Deck Actuator Removal (Disc & Cylindrical) . . . . . . . . . . . . . . . . . . . . 35
Scrub Brush Motor Removal (Cylindrical) . . . . . . . . . . . . . . . . . . . . . . . . . 36
Scrub Brush Belt Replacement (Cylindrical) . . . . . . . . . . . . . . . . . . . . . . . . 36

FORM NO. 56043136 - Adgressor™/ BR 850S, BR 1050S - 3
Scrub Brush System Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Scrub Brush Removal and Installation (Cylindrical) . . . . . . . . . . . . . . . . . . . .37
Side Skirt Maintenance & Adjustment (Cylindrical) . . . . . . . . . . . . . . . . . . . .37
Correct Scrub Motor Wiring Connections . . . . . . . . . . . . . . . . . . . . . . . . . .38
Correct Brush Rotation Directions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Solution System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Solution Solenoid Circuit Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Solution System Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Solution Solenoid Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
Solenoid Valve Disassembly and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . 43
Disc Machine Solution Plumbing Detail . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Recovery System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Vacuum Motor Circuit Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Vacuum / Recovery System Service Maintenance Checklist . . . . . . . . . . . . . . . .46
Maintenance of Vacuum Filter and Float Cage. . . . . . . . . . . . . . . . . . . . . . .46
Recovery Tank Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Vacuum Motor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Squeegee System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Lift Motor Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Lift Motor Reverse Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Squeegee Lift Actuator Motor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Squeegee Lift Cable Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Battery Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Battery Charger Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Install the Batteries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Description of the Battery Low Voltage Cutout Feature . . . . . . . . . . . . . . . . . .52
Description of the Battery Condition Indicators . . . . . . . . . . . . . . . . . . . . . . 52
Charging the Batteries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
Battery Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Battery Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Actuator Drive Nut Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
General Instructions for All Actuator Motors . . . . . . . . . . . . . . . . . . . . . 54
Instructions for Squeegee Lift Actuator Drive Nut Adjustment . . . . . . . . . . . .54
Instructions for Scrub Brush Lift Actuator Drive Nut Adjustment . . . . . . . . . .55
Curtis Controller Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Function of the Speed Controller Status Light and Display . . . . . . . . . . . . . .56
Programmer Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Diagnostic History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Status Led Fault Codes (Table 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Installation Checkout for the Curtis Speed Controller . . . . . . . . . . . . . . . . . . .58
Programming Vehicle Speed Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Handheld Programmer Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Functional Overview Of Main Control Board. . . . . . . . . . . . . . . . . . . . . . . .59
Troubleshooting Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Main Control Board Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Service Test Mode: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Control Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
Input Tests: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Output Tests:. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

4- FORM NO. 56043136 - Adgressor™/ BR 850S, BR 1050S
Main Control Board Special Program Options . . . . . . . . . . . . . . . . . . . . . . . 64
Low Voltage Cutout Threshold: . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Scrub Deck Motor Type Selection: . . . . . . . . . . . . . . . . . . . . . . . . . . .64
Single or Dual Vacuum Motor Selection: . . . . . . . . . . . . . . . . . . . . . . . . 65
Scrub Switch Operation and Scrub Pressure Limits: . . . . . . . . . . . . . . . . . 65
Restoring the Scrub Modes and Pressures to Factory Default Settings: . . . . . . . 67
Automatic Vacuum Shutoff Option On/Off:. . . . . . . . . . . . . . . . . . . . . . .67
Vacuum Automatic Shut-off Threshold Adjustment:. . . . . . . . . . . . . . . . . .67
High Speed Scrub Option On/Off: . . . . . . . . . . . . . . . . . . . . . . . . . . . .68
Back-up Alarm Volume Control: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Forward Annunciator Volume Control: . . . . . . . . . . . . . . . . . . . . . . . . .68
Control Unit Revision Level: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Recall Of Stored Error Codes: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Fault Detection On/Off: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Control Unit Sleep Delay Period: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Squeegee Raise-In-Reverse Time Period Adjustment: . . . . . . . . . . . . . . . . .70
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Drive Motor Breakdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72
Electrical Input/Output Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Electrical Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Wiring Harness Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Detergent (Chemical) Mixing System . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
Detergent System Preparation and Use (AXP Models Only). . . . . . . . . . . . . . . .78
EcoFlex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Operational Description: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Detergent System Preparation and Use (EcoFlex Models Only) . . . . . . . . . . . 79
EcoFlex Service Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
EcoFlex Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
EcoFlex Service Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81

FORM NO. 56043136 - Adgressor™/ BR 850S, BR 1050S - 5
General Information
GENERAL INFORMATION
INTRODUCTION
This manual will help you get the most from your Nilsk-Advance Rider Scrubber. Read it thoroughly before servicing the machine.
Note: Bold numbers in parentheses indicate an item illustrated on pages 9-10.
This product is intended for commercial use only.
PARTS AND SERVICE
Repairs, when required, should be performed by your Authorized Nilsk-Advance Service Center, who employs factory trained service personnel,
and maintains an inventory of Nilsk-Advance original replacement parts and accessories.
Call the NILFISK-ADVANCE DEALER named below for repair parts or service. Please specify the Model and Serial Number when discussing your
machine.
(Dealer, afx service sticker here.)
NAME PLATE
The Model Number and Serial Number of your machine are shown on the Name plate on the machine. This information is needed when ordering
repair parts for the machine. Use the space below to note the Model Number and Serial Number of your machine for future reference.
MODEL NUMBER ________________________________________________
SERIAL NUMBER ________________________________________________
TRANSPORTING THE MACHINE
CAUTION!
Before transporting the machine on an open truck or trailer, make sure that . . .
• The machine is tied down securely - see tie-down locations (25).
• All access doors and covers are secured (tape and strap as necessary).
• The machine parking brake is set.
TOWING
CAUTION!
If the machine must be towed or pushed, make sure the Key Switch (Main Power) (J) is in the OFF position and do not move the
machine faster than a normal walking pace (2-3 mph, 3-5kph) and for short distances only.
OTHER MANUALS AVAILABLE
The following manuals are available from the Nilsk-Advance Literature Service Department, for your Rider Scrubber:
• Parts List - Form Number 56042516 - Adgressor
• Parts List - Form Number 56042517 – BR 850S, BR 1050S
• Instructions for Use - Form Number 56041988 (English, Spanish) - Adgressor
56041989 (Danish, Norway, Swedish, Finnish) – BR 850S, BR 1050S
56041990 (German, French, Dutch, Russian) – BR 850S, BR 1050S
56041991 (Spanish, Portuguese, Italy, Greek) – BR 850S, BR 1050S
56041992 (Estonian, Latvian, Lithuanian, Slovenian) – BR 850S, BR 1050S
56041993 (Slovakian, Czech, Polish, Hungarian) – BR 850S, BR 1050S
56041994 (Turkish, English) – BR 850S, BR 1050S
• Curtis Programmer Manual Number 56043101

6- FORM NO. 56043136 - Adgressor™/ BR 850S, BR 1050S
General Information
CAUTIONS AND WARNINGS
SYMBOLS
Nilsk-Advance uses the symbols below to signal potentially dangerous conditions. Always read this information carefully and take
the necessary steps to protect personnel and property.
DANGER!
Is used to warn of immediate hazards that will cause severe personal injury or death.
WARNING!
Is used to call attention to a situation that could cause severe personal injury.
CAUTION!
Is used to call attention to a situation that could cause minor personal injury or damage to the machine or other property.
GENERAL SAFETY INSTRUCTIONS
Specic Cautions and Warnings are included to warn you of potential danger of machine damage or bodily harm.
WARNING!
• This machine shall be used only by properly trained and authorized persons.
• While on ramps or inclines, avoid sudden stops when loaded. Avoid abrupt sharp turns. Use low speed down hills. Clean only
while ascending (driving up) the ramp.
• Keep sparks, ame and smoking materials away from batteries. Explosive gases are vented during normal operation.
• Charging the batteries produces highly explosive hydrogen gas. Charge batteries only in well-ventilated areas, away from open
ame. Do not smoke while charging the batteries.
• Remove all jewelry when working near electrical components.
• Turn the key switch off (O) and disconnect the batteries before servicing electrical components.
• Never work under a machine without safety blocks or stands to support the machine.
• Do not dispense ammable cleaning agents, operate the machine on or near these agents, or operate in areas where ammable
liquids exist.
• Do not clean this machine with a pressure washer.
CAUTION!
• This machine is not approved for use on public paths or roads.
• This machine is not suitable for picking up hazardous dust.
• Do not use scarier discs and grinding stones. Nilsk-Advance will not be held responsible for any damage to oor surfaces
caused by scariers or grinding stones (can also cause damage to the brush drive system).
• When operating this machine, ensure that third parties, particularly children, are not endangered.
• Before performing any service function carefully read all instructions pertaining to that function.
• Do not leave the machine unattended without rst turning the key switch off (O), removing the key and applying the parking
brake.
• Turn the key switch off (O) before changing the brushes, and before opening any access panels.
• Take precautions to prevent hair, jewelry, or loose clothing from becoming caught in moving parts.
• Use caution when moving this machine in below freezing temperature conditions. Any water in the solution or recovery tanks or
in the hose lines could freeze, causing damage to valves and ttings. Flush with windshield washer uid.
• The batteries must be removed from the machine before the machine is scrapped. The disposal of the batteries should be
safely done in accordance with your local environmental regulations.
SAVE THESE INSTRUCTIONS

FORM NO. 56043136 - Adgressor™/ BR 850S, BR 1050S - 7
General Information
SPECIFICATIONS
GENERAL SPECIFICATIONS COMMON TO ALL MODELS
Machine Length 61 in. (155cm)
Machine Height 54in. (137.5cm)
Machine Chassis Width 32 in. (82cm)
Solution Tank Capacity 42 gal. (157l.)
Recovery Tank Capacity 42 gal. (157l.)
Sound pressure level
as per IEC 60704-1 (at operator) 68 dB(A)
Vibrations at the Hand Controls (ISO 5349-1) 1.12 m/s2
Vibrations at the Seat (EN 1032) 0.35 m/s2
Transport Speed (Fwd. Maximum) 4.5 mph (7.3 kphm)
Transport Speed (Rev. Maximum) 3.15 mph (5.1 kphm)
Grade Ability (Transport) 20%/ 11.5 deg.
Grade Ability (Working –Scrubbing) 8%/ 4.6 deg.
Wheel Drive Motor 1.5 hp, 1100 watt
Vacuum Motor (3 stage) .75 hp, 560 watt
Vacuum Water Lift for one motor (Sealed) 68 in.
(Open Hole Adapter 1”) 18 in.
Vacuum Water Lift for two motors (Sealed) 78 in.
(Open Hole Adapter 1”) 25 in.
Power Source (Batteries) (6) 6 volt @ 20 hour rate
Battery Weight (305 amp) STD 90 lbs. (198kg)
Battery Weight (395 amp) Opt. 121 lbs. (266kg)
Battery Compartment Size (approx.)
Height (Max.) 16.5 in. (42cm)
Width (Max.) 22.25 in. (56.5cm)
Length (Max.) 25.25 in. (64.1cm)
Battery Chargers – see Electrical System Battery Section

8- FORM NO. 56043136 - Adgressor™/ BR 850S, BR 1050S
General Information
SPECIFICATIONS COMMON TO DECK SIZE
Model designation: (28”)=Adgressor 2820 D and 2820 C (BR 850S / 32”)=Adgressor 3220 D and 3220 C / BR 850S,
(35”)=Adgressor 3520 D and 3520 C (BR 1050S / 38”)=Adgressor 3820 D and 3820 C / BR 1050S
28” BR 850S / 32” 35” BR 1050S / 38”
Machine Width with Squeegee (English) 32.55 in. 41.18 in. 41.18 in. 46.09 in.
Metric 82.67cm 104.59cm 104.59cm 117.06cm
Scrub Brush Size (qty of 2 for 28” and 32”)(qty of 3 for 35” and 38”)
(Disc)
Diameter 14.25 in. (36cm) 16 in. (40.6cm) 12.00 in. (30.48cm) 13.00 in. (33.02cm)
(Cylindrical)
Diameter 5.75 in. (14.6cm) 5.75 in. (14.6cm) 5.75 in. (14.6cm) 5.75 in. (14.6cm)
Length 27 in. (68cm) 31 in. (79cm) 34 in. (86cm) 37 in. (94cm)
Scrub Brush Motor (Disc) (1) 1.5 HP 1100 watts (1) 1.5 HP 1100 watts (3) .6 HP 448 watts (3) .6 HP 448 watts
(Cylindrical) All Cylindrical Models use (2) .75 HP 560 watts
Scrub Brush Speed (Disc) 250 RPM 250 RPM 250 RPM 250 RPM
(Cylindrical) 900 RPM 900 RPM 900 RPM 900 RPM
Minimum Aisle Turn Width 63 in. (160cm) 63 in. (160cm) 63 in. (160cm) 63 in. (160cm)
Machine Net Weight* (English) 657 lbs. 657 lbs. 657 lbs. 657 lbs.
Metric 298 kg 298kg 298 kg 298 kg
Machine Gross Weight** (English) 1553 lbs. 1553lbs. 1553 lbs. 1553 lbs.
Metric 705 kg 705kg 705 kg 705 kg
Cleaning Width (scrubbing path) (English) 28 in. 32 in. 35 in. 38in.
Metric 71cm 81cm 89cm 97cm
Coverage Rate Per Hour (4 MPH) (English) 49,280 ft256,320 ft261,600 ft2 66,880 ft2
Metric 4578m2 5232m2 5722m2 6213m2
Coverage Rate Per Hour (2.5 MPH) (English) 30,800 ft235,200 ft238,500 ft241,800 ft2
Metric 2861m2 3270m2 3576m2 3883m2
*Net Weight: Standard machine without options, empty solution and recovery tanks, without removable scrub brushes and no batteries installed.
**Gross Weight: Standard machine without options, full solution tank and empty recovery tank, with removable scrub brushes and 305 AH
batteries.
***Listings for watts are maximum values.

FORM NO. 56043136 - Adgressor™/ BR 850S, BR 1050S - 9
General Information
MAINTENANCE SCHEDULE
Maintenance intervals given are for average operating conditions. Machines used in severe operational environments may require service more often.
MAINTENANCE ITEM Daily Weekly Monthly Yearly
Charge Batteries •
Check/Clean Tanks & Hoses •
Check/Clean/Rotate the Brushes/Pads •
Check/Clean/Adjust the Squeegee • •
Check/Clean Vacuum Shut-Off Float •
Check/Clean the vacuum motor foam lter(s) •
Clean Hopper on Cylindrical System •
Check Each Battery Cell(s) Water Level •
Inspect Scrub Housing Skirts •
Inspect and clean Solution Filter •
Check Foot/ Parking Brake For Wear & Adjustment •
Clean Solution Trough on Cylindrical System •
Lubrication - Grease Fittings •
* Check Carbon Brushes •
Note: See the individual machine system sections for maintenance information.
* Have Nilsk-Advance:
Check vacuum motor carbon brushes (Qty 2) once a year or after 300 operating hours.
Check brush motor carbon brushes (Qty 4) once a year or after 500 operating hours.
Note if the vacuum or brush motor brushes are 9.5mm (3/8 inches) or shorter, replace them.
Check wheel drive motor carbon brushes every 500 operating hours. The original length of each brush is 20mm (25/32 inches). Replace when
shorter than 9.5 mm (3/8 inches) to obtain the same motor efciency as a new brush.
WARNING!
Turn the key switch off, set the parking brake and disconnect the battery before servicing the machine.
LUBRICATING THE MACHINE
Once a month, pump a small amount of grease into each grease tting on the machine until grease seeps out around the bearings.
Grease tting locations are:
• Steering Wheel Shaft Universal joint
Once a month, apply light machine oil to lubricate the:
• Steering Chain
• General Pivot Points for the Squeegee, Brush Linkage and Side Skirts
• Squeegee mount angle adjustment knob threads
BATTERIES AND CHARGERS
Attention: See the electrical system manual section for battery installation and charger system requirements.
WHEEL DRIVE MOTOR GREASE SPECIFICATION
If drive motor gear housing grease replacement is needed when repair services are performed (Example inspection shows grease contamination).
Clean gear sets and housing and re-pack. Use a multi-purpose, high melting point Lithium based grease, containing additives to provide anti-
oxidant, anti-corrosion and good lubricity properties. Use a total quantity of 4.9-5.6 oz. (140-160g) of grease to service gear case.
The grease to be used must have excellent mechanical stability, water resistance and high load carrying capacity. The MR 158 grease is particularly
recommended for automotive applications including wheel-bearing lubrication. Available NLGI consistency 3.
Average Drop Penetration ASTM Worked
Grade Point °C (mm / 10) at 25 °C Base
MR 158 Grease 180 220 / 250 Lithium*

10 - FORM NO. 56043136 - Adgressor™/ BR 850S, BR 1050S
General Information
Copyright 2004 Nilfisk-Advance. Page 1 of 2 10/21/2004
Advance Adgressor 2820, 3220, 3520, 3820 Models
Nilfisk BR 850S, 1050S
Disc and Cylindrical
PM Checklist
Defect Codes
Customer A needs adjustment
Bbinding
Address C dirty or contaminated
Ddamaged, bent or torn
City St Zip L leaks
Mmissing
Model Serial Hours W worn out
Ref
OPERATIONAL INSPECTION ITEMS
OK
Defect Codes
(circle)
Does
Not
Work
1Steering A B
2Drive Pedal Operation (check for Fwd/Rev Drive & any neutral creep) A B D
3Seat Safety Switch A D
4Brakes (Service & Parking) A B W
5Drive System Performance (reference SVR Manual for Curtis drive programmer speed
changes)
noisy sluggish
6Scrub System (Raise/Lower and auto scrubbing functions) A B
7Scrub Brush Pressure Settings (see SVR Manual programming, 3 different modes) A B
8Squeegee System (Raise/Lower and auto lift in reverse function) A B
9Vacuum Performance (sealed water lift 68" and 1- inch open hole adapter 18 inches) C L W
10 Solution Control (On/Off and flow volume Min/Max) A B L
11 Emergency Battery Disconnect Control Lever B D
12 Right Side broom Sweep System Accessory (cylindrical only) A B D
13 Tilt Steering Mechanism and Seat A B D
14 Optional Accessories (headlight, safety beacon, etc.) D
15 Main Control Board Special Program Options (check all applicable program settings,
reference SVR Manual 56043097); Example, Fault Recall Mode, Etc.
Program as needed
16 Battery Charger Operation D
Ref
VISUAL INSPECTION ITEMS
Comments OK
Defect Codes
(circle)
Does
Not
Work
17 Scrub Brushes, check for wear and rotate A B D W
18 Scrub Brush Motor(s) and disc machine gearboxes Carbon Brushes B L W
19 Scrub Brush Drive Belt, wear (cylindrical only) A D W
20 Scrub Brush Deck Actuator Motor A B D W
21 Brush Drive Plate Retainer Clips (disc) D M
22 Scrub Deck Skirts A B W
23 Solution Solenoid Valve C L
24 Solution Flow Control Valve and Linkage A B D W
25 Solution Tank, Delivery Hoses & Filter Clean Filter Screen C L
26 Vacuum Motor Carbon Brushes Wear Limit 3/8” W
27 Vacuum Motor Gaskets and Filters L W
28 Vacuum Float Ball & Cage Assembly Clean Float C M
29 Recovery Tank Cover Gasket C D L
30 Recovery Tank Drain Hose & Cap Flush C L
31 Squeegee Pick-Up Tool & Hose Back flush C L