Nilfisk-Advance 56315036(28D) User manual

9/05 revised 8/06 FORM NO. 56043103
Warrior™ST, Warrior™AXP
BA 755 series
Service Manual
Advance Models: 56315036(28D), 56315037(32D), 56315038(28C)
56315039(32C-C), 56315040(X28D-C), 56315041(X32D-C)
56315538(28D-C), 56315539(32D-C), 56315540(28C-C)
56315541(X28C-C), 56315542(X32C-C)
Nilfisk Models: 56315042(755), 56315043(755C), 56315044(855)
56315045(755X), 56315046(755CX), 56315047(855X)

FORM NO. 56043103 - Warrior™ST, Warrior™AXP / BA 755 series - 1
TABLE OF CONTENTS
INTRODUCTION .......................................................................................................................................................................................... 2
CAUTIONS AND WARNINGS ...................................................................................................................................................................... 3
SPECIFICATIONS & MAINTENANCE ...................................................................................................................................................... 4-6
PM CHECKLIST ........................................................................................................................................................................................... 7
KNOW YOUR MACHINE......................................................................................................................................................................... 8-13
SOLUTION SYSTEM............................................................................................................................................................................. 14-21
FUNCTIONAL OVERVIEW....................................................................................................................................................................... 14
CIRCUIT OVERVIEW SOLUTION AUTO MODE..................................................................................................................................... 15
SOLUTION SYSTEM MAINTENANCE .................................................................................................................................................... 16
TROUBLESHOOTING GUIDE ............................................................................................................................................................ 17-18
SOLUTION SOLENOID VALVE REMOVAL, DISASSEMBLY AND CLEANING (AXP™ / ECO+SOLUTION™)...................................... 19
SOLUTION SOLENOID VALVE REMOVAL, DISASSEMBLY AND CLEANING (STANDARD)................................................................ 20
SOLUTION FILTER AND BALL VALVE REMOVAL.................................................................................................................................. 21
SOLUTION PUMP REMOVAL.................................................................................................................................................................. 21
SCRUB SYSTEM .................................................................................................................................................................................. 22-29
GENERAL BRUSH SYSTEM FUNCTIONAL OVERVIEW ....................................................................................................................... 22
SPECIAL SCRUB SYSTEM FUNCTIONS .......................................................................................................................................... 22-23
SCRUB BRUSH DECK REMOVAL (DISC) ......................................................................................................................................... 24-25
SCRUB BRUSH LIFT ACTUATOR REMOVAL (DISC)........................................................................................................................ 24-25
SCRUB BRUSH MOTOR/GEARBOX REMOVAL (DISC) ........................................................................................................................ 26
SCRUB BRUSH DECK REMOVAL (CYLINDRICAL) .......................................................................................................................... 28-29
SCRUB BRUSH MOTOR(S) REMOVAL (CYLINDRICAL) .................................................................................................................. 28-29
SCRUB BRUSH BELT REPLACEMENT (CYLINDRICAL).................................................................................................................. 28-29
SCRUB BRUSH SYSTEM MAINTENANCE (CYLINDRICAL) ............................................................................................................ 28-29
SCRUB BRUSH REMOVAL AND INSTALLATION (CYLINDRICAL)................................................................................................... 28-29
SCRUB BRUSH LIFT ACTUATOR REMOVAL (CYLINDRICAL)......................................................................................................... 28-29
RECOVERY SYSTEM ........................................................................................................................................................................... 30-36
FUNCTIONAL OVERVIEW....................................................................................................................................................................... 30
VACUUM MOTOR CONTROL CIRCUIT OVERVIEW (AUTO MODE)..................................................................................................... 31
VACUUM/RECOVERY SYSTEM MAINTENANCE CHECKLIST ............................................................................................................. 32
MAINTENANCE OF RECOVERY TANK FLOAT SWITCHES.................................................................................................................. 33
MAINTENANCE OF VACUUM MOTOR INLET SCREEN........................................................................................................................ 34
VACUUM MOTOR REMOVAL.................................................................................................................................................................. 35
RECOVERY TANK REMOVAL ................................................................................................................................................................. 36
SQUEEGEE SYSTEM........................................................................................................................................................................... 37-40
SQUEEGEE LIFT LINKAGE ADJUSTMENT............................................................................................................................................ 37
SERVICING THE SQUEEGEE................................................................................................................................................................. 38
ADJUSTING THE SQUEEGEE ................................................................................................................................................................ 38
SQUEEGEE MOUNT ASSEMBLY REMOVAL ......................................................................................................................................... 39
CASTER WHEEL REMOVAL ................................................................................................................................................................... 40
WHEEL DRIVE SYSTEM ...................................................................................................................................................................... 41-49
GENERAL FUNCTIONAL OVERVIEW................................................................................................................................................ 41-43
WHEEL DRIVE TROUBLESHOOTING GUIDE........................................................................................................................................ 44
DRIVE MOTOR TRANSAXLE REMOVAL........................................................................................................................................... 45-46
DRIVE WHEEL REMOVAL....................................................................................................................................................................... 47
(5K) POTENTIOMETER (R1) TESTING AND REMOVAL........................................................................................................................ 48
(5K) POTENTIOMETER (R1) INSTALLATION AND ADJUSTMENT................................................................................................... 48-49
(100K) POTENTIOMETER (R2) TESTING AND REMOVAL.................................................................................................................... 49
ELECTRICAL SYSTEM ......................................................................................................................................................................... 50-73
BATTERIES .............................................................................................................................................................................................. 50
DESCRIPTION OF THE LOW VOLTAGE CUTOUT FEATURE ............................................................................................................... 51
DESCRIPTION OF THE BATTERY CONDITION INDICATORS.............................................................................................................. 51
BATTERY CHARGING, MAINTENANCE AND TESTING ................................................................................................................... 52-53
ACTUATOR DRIVE NUT ADJUSTMENT ............................................................................................................................................ 54-55
CURTIS CONTROLLER...................................................................................................................................................................... 56-59
FUNCTIONAL OVERVIEW OF MAIN CONTROL BOARD ...................................................................................................................... 60
MAIN CONTROLLER ERROR CODES ................................................................................................................................................... 61
MAIN CONTROLLER DIAGNOSTIC SERVICE TEST MODE ............................................................................................................ 62-63
OUTPUT CONTROLS ......................................................................................................................................................................... 64-66
MAIN CONTROL PROGRAMING OPTIONS ...................................................................................................................................... 67-72
ELECTRICAL COMPONENT LOCATION ................................................................................................................................................ 73
WIRING DIAGRAM................................................................................................................................................................................... 74
WIRING SCHEMATIC .............................................................................................................................................................................. 75
APPENDIX............................................................................................................................................................................................. 76-78
DETERGENT (AXP) SYSTEM PLUMBING SCHEMATIC........................................................................................................................ 76
EXTENDED SCRUB SYSTEM PLUMBING SCHEMATIC ....................................................................................................................... 77
DETERGENT (AXP) SYSTEM PREPARATION AND USE ...................................................................................................................... 78
Note: All references to right, left, front, or rear in this manual are as seen from the operator’s stand-point.

2- FORM NO. 56043103 - Warrior™ ST, Warrior™AXP / BA 755 series
INTRODUCTION
This manual will help you get the most from your Nilfisk-Advance automatic scrubber. Read it thoroughly before servicing the machine.
Note: Bold numbers and letters in parentheses indicate an item illustrated on pages 8-10.
PARTS AND 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.
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.
• All access doors and covers are secured (tape and strap as needed).
TOWING
CAUTION!
If the machine must be towed or pushed, make sure the Master On/Off Key Switch (A) 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. Note: Disconnecting the wheel drive motor
wiring connector will make a disabled machine easier to push.
OTHER MANUALS AVAILABLE FOR YOUR MACHINE
The manuals listed below can be found via Nilfisk-Advance’s two electronic supported databases. They are:
• Nilfisk-Advance Dealer Customer Zone
• Ezparts service / parts CD-Rom
•Parts List - Form Number 56042463
•Instructions for Use - Form Number 56041614 (Danish, Norwegian, Swedish, Finnish)
56041615 (German, French, Dutch, Russian)
56041616 (Spanish, Portuguese, Italian, Greek)
56041617 (Estonian, Latvian, Lithuanian, Slovenian)
56041618 (Slovakian, Czech, Polish, Hungarian)
56041619 (English, Spanish)

FORM NO. 56043103 - Warrior™ST, Warrior™AXP / BA 755 series - 3
CAUTIONS AND WARNINGS
SYMBOLS
Nilfisk-Advance uses the symbols below to signal potentially dangerous conditions. 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.
Read all instructions before using.
GENERAL SAFETY INSTRUCTIONS
Specific Cautions and Warnings are included to warn you of potential danger of machine damage or bodily harm.
WARNING!
*This machine should only be used 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.
*Do not operate this machine on ramps or inclines of more than a 2 percent gradient.
*Only use the brushes provided with the appliance or those specified in the instruction manual. The use of other brushes may impair safety.
CAUTION!
*This machine is not approved for use on public paths or roads.
*This machine is not suitable for picking up hazardous dust.
*Use care when using scarifier discs and grinding stones. Nilfisk-Advance will not be held responsible for any damage to floor surfaces caused by scarifiers or
grinding stones.
*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 securing the machine.
* Turn the key switch off (O) and remove the key, 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, recovery or detergent 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.
*Do not use on surfaces having a gradient exceeding that marked on the machine.
*All doors and covers are to be positioned as indicated in the instruction manual before using the machine.
* Refer to the battery charger OEM product manual for additional specific battery charger warnings.
SAVE THESE INSTRUCTIONS

4- FORM NO. 56043103 - Warrior™ ST, Warrior™AXP / BA 755 series
TECHNICAL SPECIFICATIONS
Voltage 36 Volt
Power Source (6) 6 volt batteries (wet acid and gel cell available)
Onboard Battery Charger 36 volt, 25 amp Wet/Gel Compatible
Solution Control Precision-flow electric pump (Pulse-control gravity feed -Warrior ST)
Solution Tank 30 gal. (114 L)
Recovery Tank 30 gal. (114 L)
Scrub Motors (2) .75 hp (560 watt)
Vacuum Motor 0.75 hp (560 watt) 3-stage
Sound Level 69 dB(A) with sound suppression kit or 71dB(A) standard
Drive System 0.5 hp (375 watt) variable forward and reverse, max speed =3 mph (4.83 km/hr), 10% gradeability
Drive Wheels (2) 13 in. (33 cm) dia. foam-filled, gray non-marking
Warrior 28D Warrior 32D Warrior 28C Warrior 32C
Scrub Head Type Disc Cylindrical
Scrub Path 28 in (71cm) 32 in (81cm) 28 in (71cm) 32 in (81cm)
Max Productivity @ 3.0 mph36,960 ft²/hr 42,240 ft²/hr 36,960 ft²/hr 42,240 ft²/hr
(3,434 m²/hr) (3,924 m²/hr) (3,434 m²/hr) (3,924 m²/hr)
Max Productivity @ 1.5mph 18,480 ft²/hr 21,120 ft²/hr 18,480 ft²/hr 21,120 ft²/hr
(1,717 m²/hr) (1,962 m²/hr) (1,717 m²/hr) (1,962 m²/hr)
Scrub Head Size & Type (2) 14 in (36 cm) brushes or pad
holders
(2) 16 in (41 cm) brushes or pad
holders (2) 27 in (69 cm) brushes (2) 31 in (79 cm) brushes
Scrub
Pressure
(1) Regular Scrub max 90 lbs max 80 lbs
(2) Heavy Scrub max 175 lbs max 100 lbs
(3) Extreme Scrub max 250 lbs max 120 lbs
Scrub Head Speed 220 rpm 900 rpm
Solution Flow
Rate
(1) Regular Scrub .30 gal/min (1.1 L/min) or 100 minutes per solution tank
(2) Heavy Scrub .60 gal/min (2.3 L/min) or 50 minutes per solution tank
(3) Extreme Scrub .90 gal/min (3.4 L/min) or 33 minutes per solution tank
Squeegee Width 41.9 in (106 cm) 41.9 in (106 cm) 41.9 in (106 cm) 41.9 in (106 cm)
Dimensions (w/o squeegee) W=30.5 in (77cm) L=61.5 in (156 cm)
H=45 in (114 cm)
W=31 in (79 cm) L=62.5 in (159 cm)
H=45 in (114 cm)
W=33.5 in (85cm) L=61.75 in (157 cm)
H=45 in (114 cm)
W=35 in (89cm) L=61.75 in (157 cm)
H=45 in (114 cm)
Weight w/ Std Batteries 914 lb (415 kg) 914 lb (415 kg) 946 lb (430 kg) 946 lb (430 kg)
AXP Specifications
Refillable Cartridge Capacity 1.25 gal (4.75 L)
Available Dilution Rates 32:1, 50:1, 64:1, 100:1, 128:1, 150:1, 200:1, 256:1, & 300:1
Low Detergent Warning Standard

FORM NO. 56043103 - Warrior™ST, Warrior™AXP / BA 755 series - 5
TECHNICAL SPECIFICATIONS

6- FORM NO. 56043103 - Warrior™ ST, Warrior™AXP / BA 755 series
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 X
Check/Clean Tanks & Hoses (clean recovery tank switches & vacuum inlet screen) X
Check/Clean/Rotate the Brushes/Pads X
Check/Clean the Squeegee X
Clean Hopper on Cylindrical System X
Purge Extended Scrub System (if installed) X
Check Each Battery Cell(s) Water Level (does not apply to gel cell batteries) X
Inspect Scrub Housing Skirts X
Inspect and clean Solution Filter X
Clean Solution Manifolds on Cylindrical System X
Purge Detergent System (AXP/ECO+Solution only) X
Lubricate the Machine X
* Check Carbon Brushes X
Note: See the individual machine system sections for maintenance information.
* Have Nilfisk-Advance check the vacuum motor carbon motor brushes once a year or after 300 operating hours. The brush and drive motor carbon brushes check
every 500 hours or once a year.
WARNING!
Turn the key switch off and disconnect the batteries before servicing the machine.
* Check vacuum motor carbon brushes (Qty 2) once a year or after 300 operating hours.
* Check brush and wheel drive motor(s) carbon brushes (Qty 4 per motor) once a year or after 500 operating hours.
* The original (new) length of each carbon brush is 1” (25.4mm) on all 36 volt machine models brush and wheel drive motors.
* All motors: Replace carbon brushes when shorter than 3/8” (9.5mm) to obtain the same motor efficiency as new brushes.
IMPORTANT!
Motor damage resulting from failure to service the carbon brushes is not covered under warranty. See the Limited Warranty
Statement.
BATTERIES AND CHARGERS
Attention: See the ELECTRICAL SYSTEM section for battery installation, battery maintenance and charger system requirements.
LUBRICATING THE MACHINE
Once a month, apply light machine oil to lubricate the:
• General Pivot Points For the Squeegee Linkage (A).
• Squeegee mount angle adjustment knob threads (B).
• Squeegee Tool end wheels (C).
• General Pivot Points For the Brush Linkage (D).
• Scrub Deck Bumper Wheels.
Once per quarter, Grease the following
• Rear Caster Wheel Swivels (E).

Nilfisk-Advance Warrior™ST, Warrior™AXP / BA 755 series Models
Cylindrical and Disc
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 Drive Paddle Operation (check for Fwd/Rev Drive & any neutral creep) A B D
2 Drive System Performance (Speed Changes Min/Max) noisy sluggish
3 Scrub System (Raise/Lower, Brush Motor On/Off & Optional Brush Remove Feature) A B D
4 Scrub Brush Pressure settings (1-3) A B
5 Squeegee System (Raise/Lower & Squeegee Tool pickup Performance) A B D
6 Vac Performance (Sealed water lift & 1” open hole adapter, 36v-56/9) C L W
7 Solution Control (On/Off Manual /Auto and Flow Volume settings 1,2 &3) A B L
8 Battery Charger (Auto turn ON & OFF) D
9 Main Controller Special Program Options (see SVR manual 56043103). Check all
applicable machine settings. Examples: Scrub mode pressure settings, SVR test mode,
low voltage cutout etc.
A
Ref
VISUAL INSPECTION ITEMS
Comments OK
Defect Codes
(circle)
Does
Not
Work
10 Scrub Brushes, check for wear and rotate D M W
11 Scrub Brush Motor(s), check for carbon brush wear 500 Hours B C W
12 Scrub Brush Motor(s), check gearboxes (disc) B D L
13 Brush Drive Plate Retainer Clips & flex couplers (disc) C D M
14 Scrub Deck Lift Motor, Skirt & Side Wheel D M W
15 Solution Solenoid Valve C L W
16 Solution Pump & Hoses C L W
17 Solution Tank, Delivery Hoses & Filter clean filter screen C L
18 Vacuum Motor Carbon Brushes (wear limit 3/8”) 300 Hours B C W
19 Vacuum motor inlet filter (located in recovery tank) clean screen C D M
20 Recovery Tank Cover Gasket L M W
21 Recovery Tank Drain Hose & Cap C D L
22 Squeegee Pick-Up Hose back flush C D L
23 Squeegee Tool & Blades (clean, rotate & adjust) A D W
24 Squeegee Tool lift cable & mount Wheels (lubricate) two side & one floor A D W
25 Battery Condition (load test, clean & water) C W
26 Drive Wheel Trans Axle Motor Check Carbon Brushes 500 Hours B C D W
27 Trans Axle Drive Tires tread wear W
28 Rear chassis Caster Wheel (Lubricate) tread wear W
NOTE: For additional service information see service manual form number 56043103 and
operator manual form number 56041619.
WORK COMPLETED BY: ACKNOWLEDGED BY:
Service Technician Signature Date Customer Signature Date

8- FORM NO. 56043103 - Warrior™ ST, Warrior™AXP / BA 755 series
KNOW YOUR MACHINE
As you read this manual, you will occasionally run across a bold number or letter in parentheses - example: (2). These numbers refer to an item shown on these
pages unless otherwise noted. Refer back to these pages whenever necessary to pinpoint the location of an item mentioned in the text. NOTE: Refer to the service
manual for detailed explanations of each item illustrated on the next 4 pages.
8 Scrub Deck Skirt
9 Scrub Deck Bumper
10 Drive Wheel
11 Solution Filter
12 Solution Shut-Off Valve
13 Squeegee Assembly
14 Battery Pack Connector (onboard charger models only)
15 Onboard Battery Charger (Not found on all models)
1 Solution Tank Fill
2 Operator Control Handle
3 Bottle Holders
4 Vacuum Motor Inlet Screen
5 Recovery Tank Cover
6 Detergent(AXP/ECO+Solution) Cartridge Access Cover
6a Detergent(AXP/ECO+Solution) Cartridge (AXP/ECO+Solution
models only)
7 Scrub Deck

FORM NO. 56043103 - Warrior™ST, Warrior™AXP / BA 755 series - 9
KNOW YOUR MACHINE
16 Solution Drain Hose / Level Indicator
17 Squeegee Raise / Lower Lever
18 Battery Pack Connector (non onboard charger models only)
19 Recovery Hose
20 Wheel Drive Circuit Breaker
21 Control Circuit Circuit Breaker
22 Squeegee Blade Tension Strap
23 Squeegee Blade Latch
24 Squeegee Blade Alignment Pins
25 Squeegee Mount Thumb Nut
26 Squeegee Adjustment Knob
27 Recovery Tank Drain Hose
28 Debris Hopper (Cylindrical Models Only)
29 Idler Assembly (Cylindrical Models Only)
30 Solution Manifold (Cylindrical Models Only)
31 Extended Scrub Filter (Optional)
32 Vacuum Shut Off Switch
33 Control Panel
34 Drive Paddle
35 Speed Limit Control Knob

10 - FORM NO. 56043103 - Warrior™ ST, Warrior™AXP / BA 755 series
CONTROL PANEL – AXP/ECO+Solution
A Key Switch (Main Power)
B Solution Switch
C Vacuum Switch
D Display Panel
D1 Solution Flow Indicator
D2 Fault Indicator
D3 Hour Meter
D4 AXP/ECO+Solution Indicator
D5 Battery Indicator
D6 Scrub Pressure Indicator
D7 Recovery Tank FULL Indicator
D8 Battery Low Indicator
E Wand Switch (Dealer Installed Option)
F Detergent System (AXP/ECO+Solution models only)
G Extended Scrub System (Dealer Installed Option)
H Scrub OFF
I Scrub ON
Regular Heavy Extreme Regular Heavy Extreme
Scrub Scrub Scrub Scrub Scrub Scrub
(press once) (press twice) (hold 5 sec.)

FORM NO. 56043103 - Warrior™ST, Warrior™AXP / BA 755 series - 11
CONTROL PANEL – STANDARD
A Key Switch (Main Power)
B Solution Switch
C Vacuum Switch
D1 Solution Flow Indicator
E Wand Switch (Dealer Installed Option)
G Extended Scrub System (Dealer Installed Option)
H Scrub OFF
I Scrub ON
Extreme Scrub
Heavy Scrub
Regular Scrub
Extreme Scrub
Heavy Scrub
Regular Scrub
D Display Panel
D1 Solution Flow Indicator
D2 Fault Indicator
D3 Hour Meter
D5 Battery Indicator
D6 Scrub Pressure Indicator
D7 Recovery Tank FULL Indicator
D8 Battery Low Indicator

12 - FORM NO. 56043103 - Warrior™ ST, Warrior™AXP / BA 755 series
KNOW YOUR MACHINE
FUNCTIONAL DESCRIPTION OF CONTROL PANEL:
The controls on the Convertamatic 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
middle switches on the control panel. These are the Scrub System OFF and Scrub system ON switches.
Scrub OFF Switch (H) - 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 be raised to the up position
• The solution flow will be stopped
• The first time that this switch is pressed, the vacuum 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 vacuum will shut
of after a 10 second delay.
Scrub ON Switch (I) – If the scrub system is off, pressing this switch once will cause the following to occur:
• The scrub system will be enabled with the scrub pressure set to the regular setting and the scrub deck will be lowered. Note press twice for the
heavy scrub pressure mode and hold this switch for 5 seconds to enter the extreme scrub mode.
• The vacuum system will be enabled.
• The solution system will be enabled.
• As soon as the throttle (operator drive paddle) 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 solution flow will be stopped. If the scrub system is already enabled
when this switch is pressed, the scrub pressure will increase to the heavy scrub mode. If the switch is held for 5 seconds the pressure will change
to the extreme scrub mode. At the same time the panel display will show the correct changed scrub pressure setting.
Wand Switch (E) – This switch is used when an external vacuum/scrub wand is used. Pressing this switch will turn the vacuum on continuously
without regard to the throttle position. If the scrub system was on it will be turned off. This includes turning off the scrub brushes and turning the
solution flow off (to the scrub deck). NOTE: automatic shutoff of the vacuum motor when the recovery tank is full is disabled when the wand is
enabled.
Key Switch (A) – Main power switch
Vacuum Switch (C) – This switch is used to turn the vacuum system on or off. 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.
The vacuum also has an automatic shutoff feature that will turn the vacuum and scrub systems off if the recovery tank becomes full.
Solution Switch (B) - 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.
Chemical Switch (AXP™ / ECO+Solution™ only) (F) – Pressing this switch will turn on or off the chemical option. See the main programming
options in this manual to select (activate) the onboard chemical distribution system.
Extended Scrub (Recycle) Switch (G) - Pressing this switch will turn on or off the recycle option. See the main programming options in this manual
to select (activate) the recycle option. Push and hold this switch for 3 seconds (the indicator (Q) will turn green) to initiate the purge function. The purge will run
for 20 seconds. NOTE: This is to flush any debris from the system. If you do not do this, the extended pump and(or) solenoid valve could become plugged up with
debris.

FORM NO. 56043103 - Warrior™ST, Warrior™AXP / BA 755 series - 13
KNOW YOUR MACHINE
DESCRIPTION OF INDICATORS ON THE CONTROL PANEL:
In general, the following guidelines apply to the control panel indicators:
A flashing green 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, the scrub system, vacuum, and solution indicators will all be yellow indicating that the systems are enabled and ready to turn
on when the throttle is moved to forward 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 (J):
• 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.
• 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.
Regular Scrub ON Indicator (K):
• This indicator will be yellow if the scrub system is enabled in “Regular” scrub mode but the drive paddle is in neutral.
• This indicator will be green if the scrub system has been turned on in “Regular” scrub mode and the machine is moving in either direction.
• This indicator will be off if the scrub system has been turned OFF.
Heavy Scrub ON Indicator (L):
• This indicator will be yellow if the scrub system is enabled in “Heavy” scrub mode but the drive paddle is in neutral.
• This indicator will be green if the scrub system has been turned on in “Heavy” scrub mode and the machine is moving in either direction.
• This indicator will be off if the scrub system has been turned OFF.
Extreme Scrub ON Indicators (K & L):
• Both of these indicators will be yellow if the scrub system is enabled in “Extreme” scrub mode but the drive paddle is in neutral.
• Both of these indicators will be green if the scrub system has been turned on in “Extreme” scrub mode and the machine is moving in either
direction.
Control panel Display (D):
See the detailed drawing shown in the Know Your Machine manual section for the specific description of the individual icon symbols. NOTE: If a
speed control fault occurs (error code 3) the wand indicator will flash the fault code produced by the Curtis speed control. Refer to the service manual
troubleshooting section for details.
Wand Switch Indicator (M):
• 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.
Vacuum System Indicator (N):
• 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 (O):
• This indicator will be green if the solution is on.
• This indicator will be yellow if the solution is enabled but the drive paddle 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.
Chemical “AXP” System Indicator (P):
• This indicator will be green if the AXP system is on.
• This indicator will be yellow if the AXP system is enabled but the drive paddle is in neutral.
• This indicator will be off if the AXP system is disabled and turned off.
Extended Scrub System Indicator (Q):
• This indicator will be green if the Extended Scrub system is on or if the “Purge” function has been initiated.
• This indicator will be yellow if the Extended Scrub system is enabled but the recovery tank switches haven’t been activated.
• This indicator will be off if the Extended Scrub system is disabled and turned off.

14 - FORM NO. 56043103 - Warrior™ ST, Warrior™AXP / BA 755 series
SOLUTION SYSTEM
FUNCTIONAL OVERVIEW
See Figure 1. The Warrior™ / BA 755 series models have a solution tank fill capacity of 30 gallons (113.5 Liters). All models use one right rear tank fill opening,
which offers ease of filling. Plumbed into the manual solution shut off valve outlet is a serviceable Solution Filter (C), to keep debris from entering the solenoid valve
(all models) and solution pump (AXP™ / ECO+Solution™ only). Also fitted to the tank is a flexible Clear Hose (B) used to indicate the solution level and to drain the
tank for system maintenance.
The solution system uses an electrical Solenoid Valve (L1) which stops and starts the solution flow to the scrub brushes. The M7 water pump (A) located on the
machine chassis controls the needed flow volume demand to the scrub brushes (AXP™ / ECO+Solution™ only). See Electrical Diagram Figure 2. The electrical
circuit that turns on (energizes) the solenoid coil and water pump is activated through the (A1) control panel’s solution switch button input and the FWD / REV (A2)
Speed Controller voltage output signals. Note: See the Know Your Machine section in this manual for a complete explanation of the solution operation modes.
During normal machine scrubbing the solution system’s Auto Mode is selected and works in conjunction with the wheel drive speed controller and the (A1) main
controller’s scrub system outputs to turn On & Off the Solenoid Valve (L1) and Pump (A). The solution will flow to the scrub brushes when the scrub deck is lowered
and the handle drive paddle (box) is pushed Fwd. Note: When the solution On/Off button is turned Off, no flow can occur while the machine scrub deck is down and
the drive paddle activated.
FIGURE 1

FORM NO. 56043103 - Warrior™ST, Warrior™AXP / BA 755 series - 15
SOLUTION SYSTEM
CIRCUIT OVERVIEW SOLUTION AUTO MODE (SOLENOID VALVE CIRCUIT)
APPLIES TO AXP™ / ECO+SOLUTION™ MODELS
See Figure 2.
+ (Positive) circuit input starts with:
• A closed S3 key switch will direct the needed positive voltage (BRN wires) to the L1 solenoid coil and A1 control board terminal #J1-13.
- (Negative) circuit input starts with:
• A battery negative ground input at the A1 control board terminal #B2 (J1-9)
• The A1 control board solution button enabled.
• A negative voltage output from the A2 speed controller’s (pin #6) Red/Blk wire to the A1 control board Red/Blk wire (terminal J1-5). Note: The A2 speed controls
brake output (pin #6) occurs whenever the R1 direction throttle pot is moved off its neutral setting.
• A negative voltage output from the A1 board’s terminal J1-11 Red/Grn wire is direct to the L1 solenoid coil turning it on to allow flow through the valve body.
CIRCUIT OVERVIEW SOLUTION AUTO MODE (SOLUTION PUMP CIRCUIT)
APPLIES TO AXP™ / ECO+SOLUTION™ MODELS
See Figure 2.
+ (Positive) circuit input starts with:
• With the batteries connected the needed positive voltage (Red wires) to the M7 Solution Pump.
- (Negative) circuit input starts with:
• A battery negative ground input at the A1 control board terminal #B4 (J2-6)
• The A1 control board solution button enabled.
• A negative voltage output from the A2 speed controller’s (pin #6) Red/Blk wire to the A1 control board Red/Blk wire (terminal J1-5). Note: The A2 speed controls
brake output (pin #6) occurs whenever the R1 direction throttle pot is moved off its neutral setting.
• A negative voltage output from the A1 board’s terminal J1-8 Grn/Blk wire is direct to the M7 Solution Pump turning it on to allow flow to the L1 Water Valve
Solenoid. NOTE: The solution pump’s output volume is controlled by the A1 board’s programmable capability and changes the pulsing of the negative battery
connection to the pump. This circuit turns the pump on and off by supplying different reduced voltage values which manages the (3) different working flow
volumes.
CIRCUIT OVERVIEW SOLUTION AUTO MODE (SOLENOID VALVE CIRCUIT)
APPLIES TO STANDARD (NON AXP™ / ECO+SOLUTION™) MODELS
• NOTE: The standard machines do not use a solution pump. The (3) standard solution flow volumes are managed by the A1 control board’s negative voltage
output from the terminal J1-11 Red/Grn wire. This circuit turns on and off thus opening and closing the L1 solenoid which manages the (3) distinctive solution
flow rates by gravity feed only.
Electrical Diagram
*For complete description of all callouts see Electrical System Wiring Diagram.
S1 M7
SOLUTION PUMP
M
12 -+ GRN/BLK
RED
NOTE: SWITCH IS PART OF
PUMP ASSEMBLY
R1
POT. 5K OHM THROTTLE
R2
POT. 100K OHM SPEED LIMIT
S3
SW, SPST KEY
M1
MOTOR, WHEEL DRIVE
M
F3
CIRCUIT BREAKER, 30 AMP
F2
CIRCUIT BREAKER, 5 AMP
L1
COIL, SOLUTION SOLENOID
1
2
3
1
2
3
12
12
12
WHT
BRN/BLK
YEL/RED
RED
BRN
BRN
BLU
BLK
RED/BLK
BRN
RED/BLK
WHT/YEL
BRN
RED/GRN
RED
BLU/BLK
BLK
GRN/BLK
BLK
BLK
BLK
BLU/BLK
BRN
WHT
BLU
BLK
BRN
WHT
BLK
+-
B+1
SOLUTION
FOR/REV.
J1-13
J1-11
REVERSE
B-1
SOL. PUMP
B-4
B-2
A1
CONTROL BOARD
J1-5 J1-6
J1-7
J1-8
J2-6
J1-9
A2 B+ B-
1210 SPEED CONTROLLER
M1
M2
PIN 3-POT. HI
PIN 4-POT. WIPER
PIN 13-POT. LO
PIN 5-KSI
PIN 16-REV
PIN 6-BRAKE(-)
(1228 FOR 36V)
PIN 18-SPEED LIMIT POT
F1
FUSE, 150 AMP
BT1
BATTERY
12
+-
RED
RED
BLK
24VDC or 36VDC
FIGURE 2

16 - FORM NO. 56043103 - Warrior™ ST, Warrior™AXP / BA 755 series
SOLUTION SYSTEM
SOLUTION SYSTEM MAINTENANCE
• Solution Tank: See Figure 1. Empty the solution tank weekly; remove the solution Drain Hose (B) from its storage area (located on the right rear control handle
compartment). Direct the hose to a designated “Disposal Site” and flush the tank with clean water.
• Solution Filter: Remove and clean the inline Solution Filter (C). To access the filter housing for removal, work underneath the middle right rear side of the
machine’s chassis. No tools are needed to remove the filter (hand tighten only). Service Tip: The solution filter ball valve must be placed in the OFF (Closed)
position. This prevents loss of solution when servicing the filter strainer with a partial or full tank.
• Solution Delivery Trough: On the cylindrical scrub deck clean the holes in the delivery trough and manifolds to assure even distribution of solution.
TROUBLESHOOTING GUIDE
Problem Possible Cause
Inadequate or no solution flow No solution in the tank
Solution tank filter ball valve in the off position
Clogged solution filter, valves and(or) hoses
*Reference the Solution System Troubleshooting Guide flowchart in this manual section for further component diagnostics.

FORM NO. 56043103 - Warrior™ST, Warrior™AXP / BA 755 series - 17
SOLUTION SYSTEM
TROUBLESHOOTING GUIDE ELECTRICAL
Possible Symptoms
1-No solution flow while in the scrub auto solution mode.
2-Solution Pump will not operate:
SYMPTOM ONE
Note: Activate the Service Test Mode Program. See optional program section for instructions.
All testing will be performed in the Service Test Mode Program.

18 - FORM NO. 56043103 - Warrior™ ST, Warrior™AXP / BA 755 series
SOLUTION SYSTEM
TROUBLESHOOTING GUIDE ELECTRICAL (CONTINUED)
SYMPTOM TWO
Note: Activate the Service Test Mode Program. See optional program section for instructions.
All testing will be performed in the Service Test Mode Program.