Nilfisk-Advance Adgressor BR 850S User manual

10/04 revised 10/06 FORM NO. 56043097
SERVICE MANUAL
Adgressor™
BR 850S, 850CS, 950S, 950CS
BR 1050S, 1050CS
Advance MODELS 56314661(2820D), 56314662(3220D), 56314663(2820C), 56314664(3220C)
56314826(3520D), 56314827(3820D), 56314828(3520C), 56314829(3820C)
Nilfisk MODELS 56314674(850S), 56314675(850CS), 56314830(950S), 56314831(1050S),
56314832(950CS), 56314833(1050CS)

2- FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS
TABLE OF CONTENTS
GENERALINFORMATION...................................................................................................................................................2
SAFETY INSTRUCTIONS....................................................................................................................................................3
SPECIFICATIONS & MAINTENANCE...............................................................................................................................4-6
PM CHECKLIST ................................................................................................................................................................7-8
KNOW YOUR MACHINE.................................................................................................................................................9-15
STEERING SYSTEM.....................................................................................................................................................16-17
STEERING COLUMNASSEMBLY SHROUD REMOVAL................................................................................................16
STEERING CHAIN REMOVALAND TENSIONING .........................................................................................................17
WHEELDRIVE SYSTEM...............................................................................................................................................18-27
GENERALFUNCTIONALOVERVIEW.............................................................................................................................18
DRIVE MOTOR SYSTEM CONTROLLER FUNCTION OVERVIEW ...............................................................................18
WHEEL DRIVE TROUBLESHOOTING GUIDE................................................................................................................21
STEERING SPINDLE & WHEELDRIVE MOTORASSEMBLY REMOVAL......................................................................22
DRIVE TIRE REMOVAL....................................................................................................................................................22
BRAKEADJUSTMENT.....................................................................................................................................................24
DRIVE WHEELBRAKE STRAP REPLACEMENT...........................................................................................................25
WHEELDRIVE MOTOR CARBON BRUSH INSPECTION..............................................................................................25
POTENTIOMETER REMOVAL & TESTING.....................................................................................................................26
POTENTIOMETER INSTALLATION &ADJUSTMENT.....................................................................................................27
DRIVE PEDALNEUTRALADJUSTMENT........................................................................................................................27
SCRUB BRUSH SYSTEM.............................................................................................................................................28-35
FUNCTIONALOVERVIEW...............................................................................................................................................28
SCRUB BRUSH SYSTEM TROUBLESHOOTING...........................................................................................................29
SCRUB BRUSH DECK REMOVAL (DISC & CYLINDRICAL)..........................................................................................30
SCRUB BRUSH MOTORASSEMBLY REMOVAL (DISC)...............................................................................................31
SCRUB BRUSH GEARBOX REMOVALAND OUTPUT SHAFT REPLACEMENT(DISC)..............................................31
SCRUB BRUSH SIDE SKIRTREPLACEMENT (DISC)...................................................................................................32
SIDE SKIRT HEIGHTADJUSTMENT (DISC)...................................................................................................................32
SCRUB BRUSH FRONT/REAR SKIRTREPLACEMENT (DISC)....................................................................................32
BRUSH DECKACTUATOR REMOVAL(DISC & CYLINDRICAL)....................................................................................33
SCRUB BRUSH MOTOR REMOVAL(CYLINDRICAL)....................................................................................................34
SCRUB BRUSH BELT REPLACEMENT (CYLINDRICAL)...............................................................................................34
SCRUB BRUSH SYSTEM MAINTENANCE.....................................................................................................................34
SCRUB BRUSH REMOVALAND INSTALLATION (CYLINDRICAL)................................................................................35
SIDE SKIRT MAINTENANCE & ADJUSTMENT (CYLINDRICAL) ...................................................................................35
CORRECT SCRUB MOTOR WIRING CONNECTIONS ..................................................................................................36
CORRECT BRUSH ROTATION DIRECTIONS ................................................................................................................37
SOLUTION SYSTEM.....................................................................................................................................................38-41
FUNCTIONALOVERVIEW...............................................................................................................................................38
SOLUTION SOLENOID CIRCUIT OVERVIEW................................................................................................................39
TROUBLESHOOTING GUIDE .........................................................................................................................................40
SOLUTION SYSTEM MAINTENANCE.............................................................................................................................40
SOLUTION SOLENOID REMOVAL..................................................................................................................................40
SOLENOID VALVE DISASSEMBLYAND CLEANING .....................................................................................................41
RECOVERY SYSTEM...................................................................................................................................................42-45
FUNCTIONALOVERVIEW...............................................................................................................................................42
VACUUM MOTOR CIRCUIT OVERVIEW ........................................................................................................................43
TROUBLESHOOTING GUIDE .........................................................................................................................................44
VACUUM / RECOVERY SYSTEM SERVICE MAINTENANCE CHECKLIST...................................................................44
MAINTENANCE OF VACUUM FILTERAND FLOAT CAGE.............................................................................................44
RECOVERYTANK REMOVAL.........................................................................................................................................45
VACUUM MOTOR REMOVAL..........................................................................................................................................45
SQUEEGEE SYSTEM...................................................................................................................................................46-48
SQUEEGEE SYSTEM LIFT MOTOR OVERVIEW...........................................................................................................46
TROUBLESHOOTING......................................................................................................................................................46
SQUEEGEE LIFTACTUATOR MOTOR REMOVAL.........................................................................................................47
SQUEEGEE LIFT CABLE REPLACEMENT.....................................................................................................................47
SQUEEGEE MAINTENANCE...........................................................................................................................................48
SQUEEGEEADJUSTMENT.............................................................................................................................................48
revised 10/06

FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS - 1
ELECTRICALSYSTEM.................................................................................................................................................49-84
BATTERIES / CHARGERS SPECIFICATIONS................................................................................................................49
INSTALLTHE BATTERIES...............................................................................................................................................49
DESCRIPTION OF THE BATTERYLOW VOLTAGE CUTOUT FEATURE......................................................................50
DESCRIPTION OF THE BATTERYCONDITION INDICATOR ........................................................................................50
CHARGING THE BATTERIES..........................................................................................................................................50
BATTERY MAINTENANCE...............................................................................................................................................51
BATTERYTESTING.........................................................................................................................................................51
ACTUATOR DRIVE NUTADJUSTMENT ....................................................................................................................52-53
CURTIS SPEED CONTROL........................................................................................................................................54-57
MAIN CONTROLBOARD FUNCTIONALOVERVIEW.....................................................................................................58
MAIN CONTROLBOARD TROUBLESHOOTING GUIDE...............................................................................................58
MAIN CONTROLLER ERROR CODES.......................................................................................................................58-59
MAIN CONTROLLER SERVICE TEST MODE............................................................................................................60-63
MAIN CONTROLBOARD SPECIALPROGRAM OPTIONS.......................................................................................64-71
ELECTRICALCOMPONENT LOCATION (before Serial Number chart)..........................................................................73
WIRING DIAGRAM (before Serial Number chart)............................................................................................................74
WIRING SCHEMATIC (before Serial Number chart)........................................................................................................75
WIRING DIAGRAM (after Serial Number chart)...............................................................................................................76
WIRING SCHEMATIC (after Serial Number chart)...........................................................................................................77
ELECTRICALCOMPONENT LOCATION (after Serial Number chart).............................................................................78
Note: All references to right, left, front, or rear in this manual are as seen from the operator’s stand-point.
TABLE OF CONTENTS
revised 10/06

2- FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS
INTRODUCTION
This manual will help you get the most from your Nilfisk-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.
PARTSAND SERVICE
Repairs, when required, should be performed by your Authorized Nilfisk-Advance Service Center, who employs factory trained service personnel,
and maintains an inventory of Nilfisk-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, affix service sticker here.)
NAME PLATE
The Model Number and Serial Number of your machine are shown on the Nameplate 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.
MODELNUMBER
SERIALNUMBER
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 MANUALSAVAILABLE
The following manuals are available from the Nilfisk-Advance Literature Service Department, for your Rider Scrubber:
•Parts List - Form Number 56042446
•Operation Manual - Form Number 56041568 (Danish, Norwegian, Swedish, Finnish)
56041569 (German, French, Dutch, Russian)
56041570 (Spanish, Portuguese, Italian, Greek)
56041581 (Estonian, Latvian, Lithuanian, Slovenian)
56041582 (Slovakian, Czech, Polish, Hungarian)
56041583 (English, Spanish)
• Curtis Programmer Manual Number 56043101
GENERAL INFORMATION

FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS - 3
CAUTIONSAND WARNINGS
SYMBOLS
Nilfisk-Advanceusesthesymbolsbelowtosignalpotentiallydangerousconditions. Alwaysreadthisinformation 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
Specific 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, flame 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
flame. 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 flammable cleaning agents, operate the machine on or near these agents, or operate in areas where flammable
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 scarifier discs and grinding stones. Nilfisk-Advance will not be held responsible for any damage to floor surfaces
caused by scarifiers 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 first 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 fittings. Flush with windshield washer fluid.
•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

4- FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS
General Specifications common toAll 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)
GradeAbility (Transport) 20%/ 11.5 deg.
GradeAbility (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 HoleAdapter 1”) 18 in.
Vacuum Water Lift for two motors (Sealed) 78 in.
(Open HoleAdapter 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
SPECIFICATIONS
TOP VIEW
Chassis
Width
Squeegee
Width
RIGHT SIDE VIEW
Height
Length
revised 6/05

FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS - 5
Specifications common to deck size
Model designation: (28”)=Adgressor 2820 D/C (32”)=Adgressor 3220 D/C, BR 850S/CS
(35”)=Adgressor 3520 D/C, BR 950S/CS (38”)=Adgressor 3820 D/C, BR 1050S/CS
28” 32” 35” 38”
Machine Width with Squeegee (English) 32.6 in. “B” 36.6 in. “C” 42.1 in. “D” 45.1 in. “E”
Metric 83.6cm “B” 93cm “C” 107cm “D” 115cm “E”
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) NA NA
(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
MinimumAisle 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.
SPECIFICATIONS

6- FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS
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 filter(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 Nilfisk-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 efficiency 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 fitting on the machine until grease seeps out around the bearings.
Grease fitting locations are:
• Squeegee WheelAxle (qty 2)
• 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
BATTERIESAND 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.
Thegreasetobeused musthaveexcellentmechanicalstability, waterresistanceandhighload carryingcapacity. TheMR158greaseisparticularly
recommended for automotive applications including wheel-bearing lubrication. Available NLGI consistency 3.
Average Drop PenetrationASTM Worked
Grade Point °C (mm / 10) at 25 °C Base
MR 158 Grease 180 220 / 250 Lithium*

FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS - 7
Copyright 2004 Nilfisk-Advance. Page 1 of 2 10/21/2004
Advance Adgressor 2820, 3220, 3520, 3820, D/C Models
Nilfisk BR 850, 950, 1050, S/CS Models
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
1 Steering A B
2 Drive Pedal Operation (check for Fwd/Rev Drive & any neutral creep) A B D
3 Seat Safety Switch A D
4 Brakes (Service & Parking) A B W
5 Drive System Performance (reference SVR Manual for Curtis drive programmer speed
changes) noisy sluggish
6 Scrub System (Raise/Lower and auto scrubbing functions) A B
7 Scrub Brush Pressure Settings (see SVR Manual programming, 3 different modes) A B
8 Squeegee System (Raise/Lower and auto lift in reverse function) A B
9 Vacuum 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

8- FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS
Copyright 2004 Nilfisk-Advance. Page 2 of 2 10/21/2004
Ref VISUAL INSPECTION ITEMS (continued) Comments OK Defect Codes
(circle)
Does
Not
Work
32 Squeegee Blades (clean & rotate) A C D W
33 Squeegee Mount Wheel (lubricate) 1 Grease Zert A C W
34 Squeegee Lift Actuator Motor & Cable A B D
35 Battery Pack Condition (clean & water) Load Test C W
36 Front Drive Wheel Motor Carbon Brushes C W
37 Front Drive Tire (rim fastener torque) Tread Wear W
38 Brake Band Lining Wear Adjust Free Play A B W
39 Drive Pedal Linkage (neutral return) Torsion Spring A B
40 Steering Chain (lubricate & tension) 1/4” Deflection A B C
41 Steering Column (knob & plunger spring) also Universal Joint Grease A D
42 Rear Wheels W
43 Sweep Debris Tray (cylindrical only) C
NOTE: For additional service information see service manual form number 56043097 and
operators manual form numbers 56041581-56041583 & 56041568-56041570.
Defect Codes A needs adjustment C dirty or contaminated Mmissing
B binding Ddamaged, bent or torn Wworn out
Lleaks
WORK COMPLETED BY: ACKNOWLEDGED BY:
Service Technician Signature Date Customer Signature Date

FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS - 9
1 Recovery Tank Cover
2 Solution Tank Fill Cover
3 Operator’s Seat
4 Solution Tank Drain Hose
5 Steering Wheel TiltAdjust Knob
6 Brake Pedal / Parking Brake
7 Solution Flow Control Lever
8 Drive Pedal, Directional/Speed
9 Hopper (cylindrical models only)
10 Drive and Steer Wheel
11 Wheel Drive Circuit Breaker
12 Control Circuit Circuit Breaker
13 Emergency Stop Switch / Battery
Disconnect Lever
14 Scrub Deck
15 Rear Wheel
16 Battery Compartment (under seat)
17 Recovery Tank Shutoff Float
KNOW YOUR MACHINE
18 Vacuum Motor Filter Housing
19 SqueegeeAssembly
20 Solution Filter
21 Recovery Tank Drain Hose
22 Machine Battery Connector
23 Control Panel
24 Squeegee Tilt Adjust Knob
25 Operator Seat Adjustment Lever
26 Smart Solutions™/ ECO Solution™
27 Tie Down Locations (3)
1
2
3
4
5
6
7
810
11
12
13
14
15
16
17
18
19
20
21
22
23
24
9
25
26
26
ON
OFF
27
27

10 - FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS
A Scrub OFF Indicator
B Scrub OFF Switch
C Scrub Pressure Decrease Indicator
D Scrub Pressure Decrease Switch
E Scrub Pressure Increase Indicator
F Scrub Pressure Increase Switch
G Scrub Pressure / Hourmeter Display
H Wand Switch Indicator
I Wand Switch
J Key Switch
K Battery Condition Indicator
L Speed Select Switch
M Speed Select Indicator
N Horn Switch
O Vacuum Switch
P Vacuum System Indicator
Q Solution System Indicator
R Solution Switch
CONTROL PANEL
ABCDEF
G
H
I
J
K
LM
NO
PQ
R

FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS - 11
FUNCTIONAL DESCRIPTION OF CONTROL BUTTONS:
The controls on theAdgressor – BR850s and BR850CS were designed with one touch operation in mind. For single pass scrubbing the user can
simply depress one switch and all systems on the machine will be ready to go.
For most single-pass scrubbing operations, the operator should only need to use the top three switches on the control panel. These are the Scrub
System Off, Scrub Pressure Decrease, and Scrub Pressure Increase switches.
The scrub system switches can be programmed to operate three different ways.The first method of operation described below is the factory default
setting. See the programming section for details.
Pressure Increase / Decrease Mode (Factory Default)
Scrub Off Switch (B) – Pressing this switch when the unit is in a scrub mode will cause the following to occur:
• The scrub brushes will turn off and the scrub deck will raise to the up position
• The solution flow will be stopped
• The first time that this switch is pressed, the vacuum/squeegee system will NOT be turned off. This is so that any remaining water may be
picked up without having to turn the vacuum back on. If this switch is pressed a second time (pressed after the scrub system has been turned
off) the squeegee will raise and the vacuum will shut of after a 10 second delay.
• The travel speed limit will return to the transport speed setting
• The scrub off indicator will be green if the scrub system is off and ready to be activated. The indicator will be off if the scrub system has been
activated. If the scrub system hasbeen turned off and thescrub deck is not up yet, or ifthe scrub deck is up and there isno weight on the seat,
the indicator will be red. If there is a fault in the scrub system this indicator will flash red.
Scrub Pressure Decrease Switch (D) – If the scrub system is off, pressing this switch will cause the following to occur:
• The scrub system will be enabled with the scrub pressure set to the last used setting and the scrub deck will be lowered
• The vacuum system will be enabled and the squeegee will be lowered
• The solution system will be enabled
• The travel speed will be limited to the scrub speed setting
• As soon as the throttle is moved from the neutral position the scrub brushes will start turning and the vacuum will turn on. If the direction is
forward the solution flow will start. If the direction is reverse, the squeegee will raise and the solution flow will be stopped.
• The scrub pressure decrease indicator will be green if the scrub system is on and the pressure is set at 1 or 2. The indicator will be off if the
scrubsystemis offorif the scrubpressureis set to maximum.The indicatorwillbe yellow if thescrub system has beenenabledbut the throttle
is in neutral.
Scrub Pressure Increase Switch (F) – If the scrub system is off, pressing this switch will cause the following to occur:
• The scrub system will be enabled with the scrub pressure set to the last used setting and the scrub deck will be lowered
• The vacuum system will be enabled and the squeegee will be lowered
• The solution system will be enabled
• The travel speed will be limited to the scrub speed setting
• As soon as the throttle is moved from the neutral position the scrub brushes will start turning and the vacuum will turn on. If the direction is
forward the solution flow will start. If the direction is reverse, the squeegee will raise and the solution flow will be stopped.
• The scrub pressure increase indicator will be green if the scrub system is on and the pressure is set at 2 or 3. The indicator will be off if the
scrub system is off or if the scrub pressure is set to minimum.The indicator will be yellow if the scrub system has been enabled but the throttle
is in neutral.
KNOW YOUR MACHINE

12 - FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS
Fixed Pressure Mode
Scrub System Off Switch - Pressing this switch when the scrub system is active will cause the following to occur:
• The scrub brushes will turn off and the scrub deck will raise to the up position
• The solution flow will be stopped
• The first time that this switch is pressed, the vacuum/squeegee system will NOT be turned off. This is so that any remaining water may be
picked up without having to turn the vacuum back on. If this switch is pressed a second time (pressed after the scrub system has been turned
off) the squeegee will raise and the vacuum will shut of after a 10 second delay.
• The travel speed limit will return to the transport speed setting
• The scrub off indicator will be green if the scrub system is off and ready to be activated. The indicator will be off if the scrub system has been
activated. If the scrub system hasbeen turned off andthe scrub deck is not up yet, orif the scrub deck is up andthere is no weight on the seat,
the indicator will be red. If there is a fault in the scrub system this indicator will flash red.
Light Scrub Pressure Select Switch – If the scrub system is off, pressing this switch will cause the following to occur:
• The scrub system will be enabled with the scrub pressure set to the light setting and the scrub deck will be lowered
• The vacuum system will be enabled and the squeegee will be lowered
• The solution system will be enabled
• The travel speed will be limited to the scrub speed setting
• As soon as the throttle is moved from the neutral position the scrub brushes will start turning and the vacuum will turn on. If the direction is
forward the solution flow will start. If the direction is reverse, the squeegee will raise and the solution flow will be stopped.
• Thelightscrub pressureindicatorwill begreenif thescrubsystem isonand the lightpressure has beenselected. Theindicatorwill beoffifthe
scrub system is off.The indicator will be yellow if the scrub system has been enabled at the light pressure setting but the throttle is in neutral.
Iftheheavy scrubpressure settingisselected, pressingthis switchwillselect thelight scrubpressure.If thelight scrub pressureis alreadyselected,
pressing this switch will have no effect.
Heavy Scrub Pressure Select Switch – If the scrub system is off, pressing this switch will cause the following to occur:
• The scrub system will be enabled with the scrub pressure set to the heavy setting and the scrub deck will be lowered
• The vacuum system will be enabled and the squeegee will be lowered
• The solution system will be enabled
• The travel speed will be limited to the scrub speed setting
• As soon as the throttle is moved from the neutral position the scrub brushes will start turning and the vacuum will turn on. If the direction is
forward the solution flow will start. If the direction is reverse, the squeegee will raise and the solution flow will be stopped.
• The heavy scrub pressure indicator will be green if the scrub system is on and the heavy pressure has been selected. The indicator will be off
if the scrub system is off. The indicator will be yellow if the scrub system has been enabled at the heavy pressure setting but the throttle is in
neutral.
If the light scrub pressure setting is selected, pressing this switch will select the heavy scrub pressure. If the heavy scrub pressure is already
selected, pressing this switch will have no effect. Light / Heavy Scrub Mode
Scrub System Off Switch - Pressing this switch when the scrub system is active will cause the following to occur:
• The scrub brushes will turn off and the scrub deck will raise to the up position
• The solution flow will be stopped
• The first time that this switch is pressed, the vacuum/squeegee system will NOT be turned off. This is so that any remaining water may be
picked up without having to turn the vacuum back on. If this switch is pressed a second time (pressed after the scrub system has been turned
off) the squeegee will raise and the vacuum will shut of after a 10 second delay.
• The travel speed limit will return to the transport speed setting
• The scrub off indicator will be green if the scrub system is off and ready to be activated. The indicator will be off if the scrub system has been
activated. If the scrub system hasbeen turned off andthe scrub deck is not up yet, orif the scrub deck is up andthere is no weight on the seat,
the indicator will be red. If there is a fault in the scrub system this indicator will flash red.
Light Scrub Pressure Select Switch – If the scrub system is off, pressing this switch will cause the following to occur:
• The scrub system will be enabled with the scrub pressure set to the last used light pressure setting and the scrub deck will be lowered
• The vacuum system will be enabled and the squeegee will be lowered
• The solution system will be enabled
• The travel speed will be limited to the scrub speed setting
• As soon as the throttle is moved from the neutral position the scrub brushes will start turning and the vacuum will turn on. If the direction is
forward the solution flow will start. If the direction is reverse, the squeegee will raise and the solution flow will be stopped.
• Thelightscrub pressureindicatorwill begreenif thescrubsystem isonand the lightpressure has beenselected. Theindicatorwill beoffifthe
scrub system is off.The indicator will be yellow if the scrub system has been enabled at the light pressure setting but the throttle is in neutral.
KNOW YOUR MACHINE

FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS - 13
If the heavy scrub pressure is active, pressing this switch will cause the pressure to return to the last used light scrub pressure setting. If the light
scrub pressure is already selected when this switch is pressed, the scrub pressure will increase up to the maximum limit programmed for the light
scrub pressure. The pressure will then roll-over to the minimum setting of 1.
Heavy Scrub Pressure Select Switch – If the scrub system is off, pressing this switch will cause the following to occur:
• The scrub system will be enabled with the scrub pressure set to the last used heavy pressure setting and the scrub deck will be lowered
• The vacuum system will be enabled and the squeegee will be lowered
• The solution system will be enabled
• The travel speed will be limited to the scrub speed setting
• As soon as the throttle is moved from the neutral position the scrub brushes will start turning and the vacuum will turn on. If the direction is
forward the solution flow will start. If the direction is reverse, the squeegee will raise and the solution flow will be stopped.
• The heavy scrub pressure indicator will be green if the scrub system is on and the heavy pressure has been selected. The indicator will be off
if the scrub system is off. The indicator will be yellow if the scrub system has been enabled at the heavy pressure setting but the throttle is in
neutral.
If the light scrub pressure is active, pressing this switch will cause the pressure to return to the last used heavy scrub pressure setting. If the heavy
scrub pressure is already selected when this switch is pressed, the scrub pressure will increase up to the maximum limit programmed for the heavy
scrub pressure. The pressure will then roll-over to the minimum value programmed for the heavy scrub mode.
Wand Switch (I) – This switch is used when an external scrub wand is used. Pressing this switch will turn the vacuum on continuously without
regard to the throttle position. It will also enable the optional solution pump. If the scrub system was on it will be turned off. This includes turning off
the scrub brushes and raising the scrub deck, turning the solution flow off (to the scrub deck) and raising the squeegee. NOTE: automatic shutoff
of the vacuum motor when the recovery tank is full is disabled when the wand is enabled. The float in the recovery tank will still prevent water from
entering the vacuum motor, but the motor will not shut off.
Key Switch (J) – Main power switch
Speed Select Switch (L) – This switch will allow the operator to select the transport speed limit while the scrub system is enabled thereby allowing
scrubbing at a higher rate of speed. This option can be disabled if desired. See the programming section for details.
The transport and scrub speed limits can be programmed using a Curtis handheld programmer. Refer to the Curtis Speed Control manual section
for details.
Horn Switch (N) – This switch will sound the horn as long as the switch is held.
The horn also functions as an automatic back-up alarm when the throttle is moved to the reverse position. The volume of the back-up alarm
is programmable. It can also be programmed to provide an annunciation feature that will sound whenever the machine is in motion. See the
programming section for details.
Vacuum Switch (O) –Thisswitch isusedto turnthevacuum systemonor off.When thevacuumis onthe squeegee willlower (unless themachine
is in reverse) and when the vacuum is off the squeegee will raise. Pressing this switch will alternate between on and off. The vacuum will only turn
on when the throttle is moved from the neutral position. It will remain on for 10 seconds after the throttle returns to neutral.
Thevacuum alsohas anautomatic shutofffeaturethatwillturnthevacuum andscrub systemsoffiftherecoverytankbecomesfull.This featurecan
be disabled if desired. See the programming section for details.
Solution Switch (R) - This switch is used to turn the solution system on or off. Pressing this switch when the scrub system has been activated will
alternate between on and off. The solution flow will only turn on when the throttle is moved from the neutral position in the forward direction. The
solution flow will turn off if the throttle returns to neutral or is moved to reverse.
Pressing this switch when the scrub system is off will momentarily turn the solution flow on to allow pre-wetting of the scrub brushes.
KNOW YOUR MACHINE

14 - FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS
DESCRIPTION OF INDICATORS ON THE CONTROL PANEL:
In general, the following guidelines apply to the control panel indicators:
A steady red indicator means that the function is inhibited for some reason. For example, if the scrub system is off and the operator is not on the seat, the scrub
system indicator will be red indicating that the system cannot be turned on until the operator is on the seat.
A flashing red or yellow indicator means that a fault has occurred in the particular system.An example of this would be an over-current fault.
A yellow indicator means that the particular function has been enabled but is not currently on. For example, if a scrub mode is selected and the throttle is in neutral,
thescrubsystem,vacuum, and solutionindicatorswillallbeyellowindicating that thesystemsareenabledandreadyto turn on whenthethrottleismovedtoforward
or reverse.
A green indicator means that the particular system is on.
A flashing green indicator means that the particular system is in a delayed-off condition.An example of this is when a scrub mode is selected and the throttle goes
from forward or reverse to neutral. When this happens the vacuum indicator will flash green indicating that the vacuum is still on but that it will be turning off after
the delay period.
Scrub Off Indicator (A):
• This indicator will be green if the scrub system is off and ready to be activated.
• This indicator will be red if the scrub system has been turned off and the scrub deck is not up yet, or if the scrub deck is up and there is no weight on the
seat.
• This indicator will flash red if there is a fault in the scrub system.
• This indicator will be off if the scrub system has been activated.
Scrub Pressure Decrease Indicator (C):
• This indicator will be yellow if the scrub system is enabled but the drive pedal is at neutral and the current scrub pressure is at 2 or more.
• This indicator will be green if the scrub system has been turned on, the current scrub pressure is at 2 or more and the machine is moving in either direction.
• This indicator will be off if the scrub system has been turned OFF or the scrub pressure is set at 1.
Scrub Pressure Increase Indicator (E):
• This indicator will be yellow if the scrub system is enabled but the drive pedal is at neutral and the current scrub pressure is at 8 or less.
• This indicator will be green if the scrub system has been turned on, the current scrub pressure is at 8 or less and the machine is moving in either direction.
• This indicator will be off if the scrub system has been turned OFF or the scrub pressure is set at 9.
Scrub Pressure/Hourmeter Display (G):
The single character display on the control panel is primarily used as a display for the scrub pressure. This display is also used to display the machine hours and
any control system fault codes.
If any of the systems on the machine are on or if the throttle is not in neutral, the display will indicate the scrub pressure setting (1-9). If the scrub system is off the
display will indicate 0.
Upon power-up or if the machine has been idle for at least ten seconds with all systems turned off, the display will indicate the machine hours. The format for the
display of the hours is as follows:
Example 123.4 hours
• The display will indicate 1 followed by a short blank period
• The display will indicate 2 followed by a short blank period
• The display will indicate 3 followed by a short blank period
• The display will indicate _ followed by a short blank period, this is used as a decimal point to indicate tenths of hours
• The display will indicate 4 (tenths) followed by a long blank period
• The display sequence will repeat
Wand Switch Indicator (H):
• This indicator will be green if the Wand Switch has been turned ON.
• This indicator will be off if the Wand Switch has been turned OFF.
Speed Selector Indicator (M):
• This indicator will be green if a scrub mode has been selected and the faster scrub speed has been selected.
• This indicator will be off if the Speed Select Switch has been turned OFF.
Vacuum System Indicator (P):
• This indicator will be green if the vacuum is on.
• This indicator will flash green if the vacuum is in the 10 second delayed-off condition.
• This indicator will be yellow if the vacuum is enabled but the drive pedal is in neutral.
• This indicator will flash yellow if there is a vacuum system fault.
• This indicator will be off if the vacuum is disabled and turned off.
Solution System Indicator (Q):
• This indicator will be green if the solution is on.
• This indicator will be yellow if the solution is enabled but the drive pedal is in neutral.
• This indicator will flash yellow if there is a solution system fault.
• This indicator will be off if the solution is disabled and turned off.
KNOW YOUR MACHINE

FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS - 15
DESCRIPTION OF THE BATTERY CONDITION INDICATORS
The battery condition indicator (J) consists of three lights, a green (G), a yellow (Y), and a red (R). The voltage indication will change based on the
cutoff level (standard or alternate) selected in the control unit. The battery voltage ranges for the various indications are listed below:
Standard Alternate
Green 34.00+ 34.50+
Green & Yellow 33.00-33.99 34.00-34.49
Yellow 32.00-32.99 33.50-33.99
Yellow & Red 31.50-31.99 33.00-33.49
Red 31.00-31.49 32.50-32.99
Flashing Red/Cutoff <31.00 <32.50
NOTE: Refer to service manual for selection of alternate cut-off level. Once the low voltage cutout level has been reached (flashing red indicator)
the batteries must be FULLY recharged to reset the battery condition indicator. The scrub system will not function until the indicator has been
reset.
DESCRIPTION OF HOURMETER / STATUS DISPLAY
The single character display in the upper right corner of the control panel is primarily used as a display for the hourmeter function. This display is
also used to display the following information depending upon which mode the control is in:
•Error codes*
•Brush pressure adjustment setting for the scrub mode*
•Display of control system default parameters*
•Recovery tank FULLindicator*
* NOTE: Reference (in the Electrical System manual section) the Main Control Board Troubleshooting Guide and the Control Board Special
Program Options sections. These sections will explain the machine error code descriptions and scrub system controller default parameter
changes.
KNOW YOUR MACHINE

16 - FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS
STEERING SYSTEM
STEERING COLUMNASSEMBLY SHROUD REMOVAL
Upper Column
1See Figure 1. Remove the center WheelAdapter (A) from the steering wheel. Pry it off using a flat bladed screwdriver.
2RemovethesteeringshaftretainerHexNut(B) (usea3/4”socketwrench)andthetwoWashers(C &D). Nextpullstraightbackonthesteering
wheel to remove it from the metal WheelAdapter (E).
3Pull off the keyed metal wheel adapter from the steering shaft by using a two-jaw gear puller. With the wheel adapter off the loose Plastic Trim
Cup (F) can now be removed.
4Remove the (4) Screws (G) securing the Column Shroud (H) and pull it off from the Column Base (I).
Lower Column
1Tilt the steering wheel column as far back (close to the seat) as possible.
2Remove the tilt column release Knob (J) (threaded) from its shaft.
3Remove the (4) Screws (K) securing the Lower Shroud (L) and next pull the shroud far enough away from the column base to clear the tilt
release shaft through the shroud opening. Note: This will take some effort in prying the flexible plastic shroud around the movable tilt shaft.
4Grip the shroud and pull up to completely release it from the steering column base and the foot brake assembly.
FIGURE 1
FRONT
J
B
D
K
G
CE
F
A
I
L
H
View from back
side of panel (I)
Remove plug
to access/grease
universal joint

FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS - 17
STEERING SYSTEM
STEERING CHAIN REMOVALAND TENSIONING
1Turn the master key switch off and separate the battery pack emergency disconnect (13).
2See Figure 2. From underneath the front of the machine loosen the (4) (M) Screws and push the lower steering column to the rear of the
machine. This is done to separate the Chain (N) from the Steer Sprocket (O). Service Note: Use a 5/8” socket with 3” extension to loosen
screws and also correctly position the large hole in the Steer Plate (P) in order to access the far back left screw.
3Remove both Master Links (Q) that secure the chain to the Steer Plate (P) then remove the chain from the chassis.
4Reassemble parts in reverse order and adjust chain tension so that there is about 3/16”-1/4” (4.7 – 6.4mm) total deflection with moderate
pressure applied at the Mid-point (R) (as shown). Service Tip Note: Use a pry bar or shims between the chassis and steer column to help
secure the tension adjustment when tightening the (4) steering column mounting screws.
Maintenance
1Inspect the chain for looseness and binding, re-tension the chain to 3/16”-1/4” (4.7 – 6.4mm) deflection by following the above adjustment
instructions.
2Keep all of the steer chain links oiled to prevent excessive wear and binding.
FIGURE 2
R
FRONT
View from under
the machine
M
O
N
Q
P

18 - FORM NO. 56043097 /Adgressor™/ BR 850S, 850CS, 950S, 950CS, 1050S, 1050CS
WHEEL DRIVE SYSTEM
GENERAL FUNCTIONAL OVERVIEW
See Figures 1 & 2. An 1100-watt 1.5 HP (permanent magnet) 36V motor/gear transmission combination wheel (M3) unit is used to propel all
machines. ACurtis model 1237 PMC solid state speed controller (A1) regulates (outputs) the variable speed Fwd/Rev wheel drive motor functions.
Thecontroller unitis locatedto theleft ofthe operatorseat, behindthe electricalaccess panel. Thepotentiometer R1mounted tothe operator’sfoot
pedal, inputs to the (A1) controller the machine operator’s desired speed and directional demands.
DRIVE MOTOR SYSTEM CONTROLLER FUNCTION OVERVIEW
See Figure 2. To make theA1 speed controllers internal control circuits operational (power it up) the two switches S1 (key) and S2 (seat) must be
closed. This circuit inputs a positive (+) 36V to theA1 speed controls pin terminal #15 (*KSI). The F2 circuit breaker 70Amp supplies the positive
high current (load) circuit input to the B+ controller terminal (Blu/Orn wire). The black wire from the negative (-) battery standoff supplies the battery
ground input to the B- terminal for both the control and load circuits.
See Figure 3. Depressing the foot pedal in either Fwd or Rev will move the 5K Ohm (R1) potentiometer shaft off its centered balanced (neutral)
setting of approximately 2500 Ohms. With this pot shaft movement the pot’s resistance value changes which generates a variable voltage signal
(0-5volts). Thesecontrolboardvoltageinputsignalsarewhatenergizesthe Fwd&Rev directionalrelays,which selectsthemotorpolarityand what
also manages switches the battery voltage On and Off (**PWM) that varies the motor speed.
*KSI: Key Switch Input
**PWM: Pulse Width Modulation, also called “chopping” is a technique that switches battery voltage to the motor ON and OFF very quickly, thereby
controlling the speed of the motor.
DRIVE MODE SELECTION OPERATION OVERVIEW
TheA1 speed Controller allows operation in two distinct modes: mode 1 (M1) & mode 2 (M2).
Mode 1 (M1) is the transport speed range and is automatically selected when the scrub system is OFF (deck up). This allows maximum variable
vehicle speed operation.
Mode 2 (M2) is the reduced slower scrub speed range and is automatically selected when the scrub mode is ON (deck down).
The operator can over-ride the reduced M2 scrub speed by pressing the dash panel Speed Select Switch (L). This allows the operator to scrub at
the higher M1 transport speed. Note the Indicator Light (M) will be green when the faster transport speed is selected.
THE SPEED SELECTOR CIRCUIT INPUT
The main controller E1 will output a 30-31 volt (approximately) battery positive (B+) signal from the speed limit terminal J4-2 (Brn/Wht wire). This
positive signal connection delivers the required A1 speed control input to pin #11. The controller is now in scrub speed (mode 2) and the speed
control mode select is switched ON. Pressing the dash panel Speed Select Switch (L) its Indicator Light (M) turns ON. This action leaves the
speed control input (pin #11) floating and actively switches it Off, 0 volts (pulling it to B-) changing the output to the transport speed (mode 1).
Note: The maximum machine drive wheel speed setting for the two drive modes 1 & 2 can be changed by using the Curtis handheld programmer.
Reference the Curtis programmer instructions found in the electrical system manual section to change speed settings from their original factory
specifications.