Nilfisk-Advance Adphibian AX 651 Multi EDS User manual

Adphibian™/AX 651 Multi EDS
AquaPLUS™
11/10 Form No. 56043116
Service Manual
Advance Adphibian Model 56317000
Nilsk AX 651 Multi EDS Model 56317003
Advance AquaPLUS Models 56317001, 56317002

ii - Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™
Contents
Introduction..........................................................................................................6
Parts and Service ...............................................................................................6
Nameplate ..........................................................................................................6
Part Number .......................................................................................................6
Serial Number ....................................................................................................6
Transporting the Machine...................................................................................6
Towing ................................................................................................................6
Other Manuals and Information Sources for Your Machine................................7
Adphibian ........................................................................................................7
AX 651 Multi EDS ...........................................................................................7
AquaPLUS/AquaPLUS AXP............................................................................ 7
Cautions and Warning Symbols .........................................................................7
General Safety Instructions ................................................................................8
Technical Specications ...................................................................................10
General Maintenance......................................................................................... 11
Maintenance Schedule..................................................................................... 11
Batteries and Chargers ....................................................................................12
Lubricating the Machine ...................................................................................12
Adphibian/AX 651 .........................................................................................12
AquaPLUS ....................................................................................................12
Know Your Machine...........................................................................................14
Major Components ...........................................................................................14
Major Components (continued) ........................................................................15
Control Panel - Adphibian/AX 651 Multi EDS - Scrub Mode ............................ 16
Control Panel - Adphibian/AX 651 Multi EDS - Extract Mode ..........................17
Control Panel Switch Functions - Adphibian/AX 651 Multi EDS.......................18
Control Panel Indicators - Adphibian/AX 651 Multi EDS .................................. 21
Control Panel - AquaPLUS ..............................................................................24
Control Panel Switch Functions - AquaPLUS...................................................25
Control Panel Indicators - AquaPLUS .............................................................. 28
General Guidelines for Control Panel Indicators ..............................................29
Solution System.................................................................................................30
Functional Overview.........................................................................................30
Circuit Overview - Solution Auto Mode (Solenoid Valve Circuit).......................31
Circuit Overview - Solution Auto Mode (Solution Pump Circuit).......................31
Solution System Maintenance..........................................................................33
Solution Tank.................................................................................................33
Solution Filter ................................................................................................33
Troubleshooting Guide .....................................................................................33
Solution System - Electrical Troubleshooting Guide ........................................33
Possible Symptoms....................................................................................... 33

Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™ - iii
Symptom One - No Solution Flow While in the Scrub Auto Solution Mode ..34
Symptom Two - Solution Pump Will Not Operate .........................................35
Solenoid Valve Removal...................................................................................36
Solenoid Valve Disassembly and Cleaning ......................................................36
Solution Filter and Shutoff Valve Removal .......................................................36
Solution Pump Removal...................................................................................36
Scrub System.....................................................................................................37
Functional Overview.........................................................................................37
Circuit Overview - Scrub Brush Motor M4 and M5 Run Function.....................37
M3 - Scrub Brush Actuator Lift Motor Function ................................................38
Scrub System Low-voltage Cut-out Function ...................................................38
Scrub Brush Deck Removal .............................................................................40
Scrub Brush Motor Removal ............................................................................42
Scrub Brush Belt Replacement ........................................................................42
Scrub Brush System Maintenance ...................................................................43
Scrub Brush Lift Actuator Removal ..................................................................43
Recovery System...............................................................................................46
Functional Overview.........................................................................................46
Extract mode - All machines..........................................................................47
Scrub Mode - Adphibian and AX 651 Multi EDS only....................................47
Vacuum Motor Control Circuit Overview (Auto Mode) .....................................47
Vacuum / Recovery System Service Maintenance Checklist ...........................49
Troubleshooting Guide .....................................................................................49
Vacuum Leaks...............................................................................................49
Restrictions ...................................................................................................49
Maintenance of Recovery Tank Float Switch....................................................50
Maintenance of the Vacuum Motor Inlet Screens............................................. 51
Spray Nozzle Maintenance ..............................................................................51
Vacuum Shoe Pin - (Adphibian and AX 651 Multi EDS Only) .......................... 51
Vacuum Shoe Maintenance..............................................................................52
Vacuum Motor Removal ...................................................................................53
Recovery Tank Removal...................................................................................53
Squeegee Lift Linkage Adjustment (Adphibian and AX 651 Multi EDS Only) .. 55
Servicing The Squeegee ..................................................................................56
To Reverse or Replace the Rear Squeegee Wiping Blade ..............................56
To Reverse or Replace the Front Squeegee Blade..........................................57
Adjusting the Squeegee Angle .........................................................................57
Squeegee Mount Assembly Removal ..............................................................58
Caster Wheel Removal ....................................................................................59

iv - Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™
Wheel Drive System ..........................................................................................60
General Functional Overview ...........................................................................60
Drive Motor System Function ...........................................................................61
Electrical Diagram .........................................................................................61
A1 Speed Control Pin Connections..................................................................62
Low Current A1 Speed Control Pin Key Detail.............................................. 62
Wheel Drive Troubleshooting Guide.................................................................63
Drive Motor Transaxle Removal .......................................................................64
Drive Motor Transaxle Removal (continued) ....................................................65
Drive Wheel Removal.......................................................................................66
5K Directional/Throttle Potentiometer (R1) ......................................................67
Testing the 5K Directional/Throttle Potentiometer R1 ...................................67
Removing the R1 5K Potentiometer.............................................................. 68
Installing and Adjusting the R1 5K Potentiometer .........................................68
100K Potentiometer (R2)..................................................................................69
Test Procedure ..............................................................................................69
R2 Potentiometer Removal ...........................................................................69
Electrical System...............................................................................................70
Batteries ...........................................................................................................70
If your machine shipped with batteries installed, do the following:................ 70
If your machine shipped without batteries installed do the following:............ 70
When Servicing Batteries..............................................................................70
Specic Wet Cell Battery Information...............................................................71
Wet Cell Battery Specications.....................................................................71
Wet Cell Battery Charger Specications.......................................................71
Description of the Low-voltage Cutout Feature ................................................72
Description of the Battery Condition Indicators ................................................72
Explanation of Battery Indicator Lights and Voltage Ranges ...........................72
Charging Wet Batteries ....................................................................................73
When Servicing Wet Batteries..........................................................................73
If your machine shipped with an onboard battery charger,
do the following: .........................................................................................73
If your machine shipped without an onboard battery charger,
do the following: .........................................................................................73
Checking the Battery Water Level ....................................................................73
Charging Gel (VRLA) Batteries ........................................................................74
When Servicing Gel (VRLA) Batteries..............................................................74
If your machine shipped with an onboard battery charger,
do the following: .........................................................................................74
If your machine shipped without an onboard battery charger,
do the following: .........................................................................................75
Wet Cell Battery Maintenance..........................................................................75
Battery Testing..................................................................................................75
Actuator Drive Nut Adjustment ......................................................................... 76

Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™ - v
General Instructions for All Actuator Motors..................................................76
Adjusting the Drive Nut on the Scrub Brush Lift Actuator..............................77
Curtis Controller Diagnostics............................................................................79
Diagnostics Method A - LED Panel and Wand Switch Indicator....................79
Diagnostics Method B - Curtis Programmer.................................................. 79
Diagnostic History .........................................................................................80
Speed Control Programming Options ..............................................................82
Installation Checkout for the Curtis Speed Controller ......................................82
Programming Vehicle Speed Changes ............................................................83
Maintenance.....................................................................................................83
Functional Overview of the Main Control Board...............................................83
Troubleshooting Guide .....................................................................................84
Main Controller Error Codes.............................................................................84
Service Test Mode............................................................................................86
To Enter the Service Test Mode .................................................................... 86
Panel Indicators – Service Test Mode........................................................... 87
To Run the Wheel Drive Motor ......................................................................88
To Switch the Solution System On and Off ...................................................88
To Lower and Raise the Scrub Deck............................................................. 88
To Switch the Vacuum Motors On and Off ....................................................89
To Extend and Retract the Vacuum Shoe Pin ...............................................89
To Switch the Scrub Brush Motors On and Off .............................................89
To Switch the Detergent (AXP) System On and Off
(on machines so equipped)........................................................................90
Main Control Programming Options .................................................................90
Selecting the Low Voltage Cutout Threshold ................................................ 90
Selecting the Scrub Pressure Current Limits ................................................ 91
Restoring the Scrub Pressure Limits to the Factory Default Settings ........... 92
Recall Of Stored Error Codes .......................................................................92
Turning Fault Detection On or Off ................................................................. 92
Displaying the Control Unit Revision Level ................................................... 93
Enabling/Disabling the AXP System ............................................................. 93
AXP User Ratio Selection .............................................................................93
Factory Reset................................................................................................94
Electrical Wiring Diagram/Schematic...................................................................95
Electrical Ladder Diagram ...................................................................................96
Detergent (AXP) System Plumbing Schematic ...................................................97
Detergent (AXP™) System Preparation And Use ...............................................98
Note: All references to right, left, front, or rear in this manual are as
seen from the operator’s standpoint.

6- Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™
Introduction
This manual will help you get the most from your Nilsk-Advance machine. Read it thoroughly before servicing the
machine.
Note: Bold numbers and letters in parentheses indicate items illustrated in the Know Your Machinesection.
Parts and Service
Repairs should be performed by your Authorized Nilsk-Advance Service Center, who employs factory trained service
personnel, and maintains an inventory of Nilsk-Advance original replacement parts and accessories.
Call the Nilsk-Advance Dealer named below for repair parts or service. Please specify the Model Number (same as
the Part Number) and Serial Number when discussing your machine.
(Dealer, afx service sticker here.)
Part 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, 3-5 kph) and for short distances only.
Note: Disconnecting the wheel drive motor wiring connector will make a disabled machine easier to push.
Nameplate
The Part (Model) Number and Serial Number of your machine are shown
on the Nameplate located in the battery compartment. This information is
needed when ordering repair parts for the machine. Use the space below
to note the Part (Model) Number and Serial Number of your machine for
future reference.

Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™ - 7
Other Manuals and Information Sources for Your Machine
Adphibian
• Instructions for Use (English, Spanish) – Form Number 56041711
• Parts List – Form Number 56042476
AX 651 Multi EDS
• Instructions for Use (Dansk, Norsk, Svenska, Suomi) – Form Number 56041678
• Instructions for Use (Deutsch, Français, Nederlands, Русский) – Form Number 56041679
• Instructions for Use (Español, Português, Italiano, Ελληνικά) – Form Number 56041680
• Instructions for Use (Eesti, Latviski, Lietuviškai, Slovenščina) – Form Number 56041681
• Instructions for Use (Slovensky, Česky, Polski, Magyar) – Form Number 56041682
• Instructions for Use (Türkçe, English) – Form Number 56041683
• Parts List – Form Number 56042497
AquaPLUS/AquaPLUS AXP
• Instructions for Use (English, Spanish) – Form Number 56041677
• Parts List – Form Number 56042476
These manuals can be found on the following Nilsk-Advance’s electronic supported databases:
• Nilsk-Advance Dealer Customer Zone
• Nilsk-Advance website: www.Nilsk-Advance-us.com
• EzParts service / parts CD-ROM
Cautions and Warning Symbols
Nilsk-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.

8- Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™
General Safety Instructions
Specic Cautions and Warnings are included to warn you of potential danger of machine damage or bodily harm.
Warning!
• This machine 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, ame and smoking materials away from batteries. Explosive gases are vented during normal
operation.
• Charging the batteries produces highly explosive hydrogen gas. Charge batteries only in well-ventilated areas away
from open ame. Do not smoke while charging the batteries.
• Remove all jewelry when working near electrical components.
• Turn the Key Switch off (O) and disconnect the batteries before servicing electrical components.
• Never work under a machine without safety blocks or stands to support the machine.
• Do not dispense ammable cleaning agents, operate the machine on or near these agents, or operate in areas where
ammable liquids exist.
• Do not clean this machine with a pressure washer.
• Do not operate this machine on ramps or inclines of more than a two-percent gradient.
• Only use the brushes provided with the appliance or those specied 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 scarier discs and grinding stones. Nilsk-Advance will not be held responsible for any damage
to oor surfaces caused by scariers or grinding stones.
• When operating this machine, ensure that third parties, particularly children, are not endangered.
• Before performing any service function, carefully read all instructions pertaining to that function.
• Do not leave the machine unattended without rst turning the Key Switch off (O), removing the key and 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 or
recovery tanks, or in the hose lines could freeze, causing damage to valves and ttings. Flush with windshield
washer uid.
• The batteries must be removed from the machine before the machine is scrapped. The disposal of the batteries
should be safely done in accordance with your local environmental regulations.

Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™ - 9
• 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 Electrical System section at back of this manual for additional specic battery charger warnings.
Save These Instructions

10 - Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™
Voltage
24 Volt
Power Source
(4) 6 volt batteries (wet acid and gel cell available)
Onboard Battery Charger
24 volt, 25 amp Wet/Gel Compatible
Solution Control
Precision-flow electric pump/solenoid valves
Solution Tank
20 gal. (76L)
Recovery Tank
20 gal. (76L)
Solution
System
Solution Capacity 20 gal (76 L)
Solution Pump 100 psi diaphragm demand
Flow Rates Restoration Mode LIFT™ Mode Deep Treat™
Pre-spray Mode
Hard Floor Mode
(Adphibian/AX 651
Multi EDS only)
0.81 gpm (3,1 L/min) 0.26 gpm (1 L/min) 0.93 gpm (3,5 L/min) 0.26 gpm (1 L/min)
Scrub System
Type Cylindrical, 24” (61cm) scrub path
Brush Motors (2) ½ hp (375 watt), permanent magnet, 960 RPM
Brushes Dual 24” (61cm) dual counter-rotating cylindrical, with debris hopper
Brush Speed 960 RPM
Vacuum
System
Vacuum Motor (2) 24 VDC, three-stage bypass
Airflow 93 cfm (44 L/sec) - Extraction 67 cfm (32 L/sec) - Scrubbing
Water Lift 70 inches H
2
O
Vacuum Shoes Dual 13.5” (34cm) dual pivoting laminar flow, 45 lb down-pressure
Squeegee 36” (91 cm) curved laminar flow (Adphibian/AX 651 Multi EDS only)
Drive System Drive Motor 0.4 hp (300 watt) variable forward and reverse, max speed =3 mph (4.83 km/hr), 10% gradeability
Drive Wheels (2) 7 in. (18cm) dia. foam-filled, gray non-marking
Machine Speed
Transport LIFT Mode Restoration
Mode
Light Deep
Treat Mode
Heavy Deep
Treat Mode
Hard Floor
Mode
(Adphibian/AX
651 Multi EDS
only)
220 ft/min
(4 km/hr)
90 ft/min
(1,6 km/hr)
50 ft/min
(0,9 km/hr)
150 ft/min
(2,7 km/hr)
100 ft/min
(1,8 km/hr)
220 ft/min
(4 km/hr)
Coverage Rate LIFT Mode Restoration Mode Hard Floor Mode (Adphibian/AX
651 Multi EDS only)
10,800 ft
2
/hr 6,000 ft
2
/hr 26,000 ft
2
/hr
Sound Level
Scrubbing - 66 dB (A) Extracting - 69 dB (A)
Machine Dimensions
(without squeegee)
Length – 56” (142cm) Width – 27” (69cm) Height – 43.5” (110cm)
Battery Compartment Dimensions
Length – 20.5” (52cm) Width – 15.5” (39cm)
Machine Weight
650 lbs (296 kg) with batteries; 370 lbs (168 kg) without batteries
AXP
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
Technical Specications

Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™ - 11
General Maintenance
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 and Hoses
(clean recovery tank switches and vacuum inlet screen) X
Check/Clean/Rotate the Brushes X
Check/Clean the Squeegee (Adphibian/AX 651 only) X
Clean Hopper on Cylindrical System X
Purge Extended Scrub System (if installed) X
Purge AXP Detergent System (if installed) X
Check the Water Level on each Battery Cell
(does not apply to gel cell batteries) X
Inspect Scrub Housing Skirts X
Inspect and clean Solution Filter X
Clean Solution Trough on Cylindrical System X
Lubricate the Machine X
* Check the Carbon Brushes X
Note: See the individual machine system sections for maintenance information.
* Have Nilsk-Advance check the vacuum motor carbon brushes once a year or after 300 operating hours. Check the
brush motor and drive motor carbon brushes every 500 hours or once a year.
Warning!
Turn the Key Switch off and disconnect the batteries before servicing the machine.
• Check the vacuum motor carbon brushes once a year or after 300 operating hours.
• Check brush and wheel drive motor(s) carbon brushes (four per motor) once a year or after 500 operating hours.
• The original (new) length of each carbon brush is 1” (25,4mm) on all 24-volt machine models brush and wheel drive
motors.
• Replace the carbon brushes on all motors when the brushes are shorter than 3/8” (9.5mm) to obtain the same motor
efciency as new brushes.
Important!
Motor damage resulting from failure to service the carbon brushes is not covered under warranty. See the Limited
Warranty Statement.

12 - Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™
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 following components:
Adphibian/AX 651
Refer to Figure 1.
Once a month lubricate the pivot points
below. For best results, use a silicone
spray.
• General Pivot Points for the Brush
Linkage (A).
• General Pivot Points for the
Squeegee Linkage (B).
• Threads on the Squeegee Mount
Angle Adjustment Knob (C).
• Squeegee Tool End Wheels (D).
• Scrub Deck Bumper Wheels.
Once per quarter, Grease the Rear
Caster Wheel Swivel (E). Wipe off any
excess grease to avoid staining carpet.
AquaPLUS
Refer to Figure 2.
• Once a month lubricate the
General Pivot Points for the Brush
Linkage (A). For best results, use
a silicone spray.
• Once per quarter, grease the Rear
Caster Wheel Swivel (B). Wipe
off any excess grease to avoid
staining carpet.
Figure 1
Figure 2
Front
Front

Advance Adphibian™/AX 651/AquaPLUS™
PM Checklist
Defect Codes
Customer A needs adjustment
B binding
Address C dirty or contaminated
D damaged, bent or torn
City St Zip L leaks
M missing
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 and 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) A B D
4 Scrub Brush Pressure Settings (Adphibian/AX 651 only) A B
5 Squeegee System (raise/lower and squeegee tool pickup performance -
(Adphibian/AX 651 only)
A B D
6 Vacuum Performance (sealed water lift and 1” open-hole adapter) C L W
7 Solution control (on/off and flow volume settings; three flow settings for
AquaPlus, four flow settings for Adphibian/AX 651)
A B L
8 Battery Charger (auto turn on and off) D
9 Main Controller Special Program Options (see the Electrical System/
Main Control Programming Options section in this manual)
A
Ref
Visual Inspection Items Comments
OK Defect Codes
(circle)
Does
Not
Work
10 Scrub Brushes, check for wear and tear D M W
11 Scrub Brush Motor(s), check carbon brushes for wear 500 hours B C W
12 Scrub Brush Motor(s), check gearboxes B D L
13 Scrub Deck Lift Motor, Skirt & Side Wheel D M W
14 Solution Solenoid Valve C L W
15 Solution Pump and Hoses C L W
16 Solution Tank, Delivery Hoses and Filter clean filter
screen
C L
17 Vacuum Motor Carbon Brushes (wear limit 3/8”) 300 hours B C W
18 Vacuum motor inlet filter (located in recovery tank clean screen C D M
19 Recovery Tank Cover Gasket L M W
20 Recovery Tank Drain Hose & Cap C D L
21 Squeegee Pick-Up Hose (Adphibian/AX 651 only) back flush C D L
22 Squeegee Tool and Blades (clean, rotate and adjust -
(Adphibian/AX 651 only) A D W
23 Squeegee Tool lift cable & mount Wheels (lubricate -
(Adphibian/AX 651 only)
two side, one
floor
A D W
24 Battery Condition (load test, clean & water) C W
25 Drive Wheel Transaxle Motor -Check Carbon Brushes 500 Hours B C D W
26 Transaxle Drive Tires tread wear W
27 Rear Chassis Caster Wheel (lubricate) tread wear W

14 - Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™
Know Your Machine
Major Components
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 this page unless otherwise noted. Refer back to this page whenever necessary to
pinpoint the location of an item mentioned in the text. Note: Detailed explanations of each item illustrated on the next
three pages are provided later in this section.
1 Solution Fill Cap
2 Bottle Holders
3 Recovery Tank Dome Lid
4 Recovery Tank
5 Detergent (AXP) Cartridge Access Cover
6 Detergent (AXP) Cartridge (AXP models only)
7 Scrub Deck Rollers
8 Scrub Deck
9 Idler Assembly
10 Extraction/Vacuum Shoes
11 Drive Wheel
12 Vacuum Motor Inlet Screens
13 Solution Tank
14 Onboard Battery Charger
15 LIFT Low Moisture Spray Nozzle
16 Restoration Spray Nozzle
17 Battery Pack Connector
18 Squeegee Assembly (Adphibian/AX 651 only)
Figure 3

Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™ - 15
Major Components (continued)
19 Operator Control Handle
20 Drive Paddle
21 Speed Control Knob
22 Solution Drain Hose / Level Indicator
23 10-amp Control Circuit Circuit Breaker
24 30-amp Drive Motor Circuit Breaker
25 Recovery Tank Drain Hose
26 Rear Caster
27 Accessory Port
28 Solution Filter
29 Debris Hopper
30A Vacuum Recovery Hose (extract position)
30B Vacuum Recovery Hose (scrub position)
31 Solution Shutoff Valve
32 Recovery Drain Hose Cap
33 Control Panel
34 Vacuum Shutoff Switch*
35 Squeegee Adjustment Knob*
36 Squeegee Raise/Lower Lever*
37 Squeegee Blade Latch*
38 Squeegee Blade Tension Strap*
39 Squeegee Blade Alignment Pins*
40 Squeegee Mount Thumb Nut*
* Adphibian/AX 651 Multi EDS only
Figure 4

16 - Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™
Control Panel - Adphibian/AX 651 Multi EDS - Scrub Mode
A Key Switch (Main Power)
B Detergent System
C Solution Pre-spray Switch
D Display Panel
D1 AXP Indicator
D2 Hour Meter/Battery Indicator
D3 Fault Indicator
D4 AXP Detergent Ratio Indicator
D9 Recovery Tank Full Indicator
D10 Battery Low Indicator
D12 Scrub Mode Indicator
D13 Solution OFF Indicator
D14 Light Scrub Pressure Indicator
D15 Solution Active Indicator
D16 Heavy Scrub Pressure Indicator
E Vacuum Switch
F Speed Control Fault Code Indicator
G Wand Switch
H Scrub OFF Switch (red)
J Scrub ON Switch (green)
K Floor Mode Switch (orange)
A
B
C
E
HJ
D
D1
D3
G
D2
D4
F
K
D12
D4 D13 D14
D15
D16
SCRUB
!
D9
!
D10

Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™ - 17
A
B
C
E
HJ
D
D1
D3
G
D2
D5
F
K
D6
D11
D4
!
D9
!
D10
D7
D8
EXTRACT
A Key Switch (Main Power)
B Detergent System
C Solution Pre-spray Switch
D Display Panel
D1 AXP Indicator
D2 Hour Meter/Battery Indicator
D3 Fault Indicator
D4 AXP Detergent Ratio Indicator
D5 LIFT Low Moisture Extract Mode Indicator
D6 Restoration Extract Mode Indicator
D7 Fast Pre-spray Mode
D8 Heavy Pre-spray Mode
D9 Recovery Tank Full Indicator
D10 Battery Low Indicator
D11 Extract Mode Indicator
E Vacuum Switch
F Speed Control Fault Indicator
G Wand Switch
H Scrub OFF Switch (red)
J Scrub ON Switch (green)
K Floor Mode Switch (orange)
Control Panel - Adphibian/AX 651 Multi EDS - Extract Mode

18 - Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™
Control Panel Switch Functions - Adphibian/AX 651 Multi EDS
Key Switch (A)
Main power switch.
Detergent System (B)
This switch controls the AXP system.
• Pressing and releasing this switch while the solution system is active will toggle the AXP system on and off.
• The AXP Indicator (D1) informs the operator when the detergent bottle is low. Pressing and holding the Detergent
System switch for two seconds after the AXP bottle has been relled will reset the AXP Indicator on the display to
show full.
• Holding the Detergent System switch and the Solution Pre-spray Switch (C) at the same time for two seconds will
switch the machine into the purge mode.
Solution Pre-spray Switch (C)
If the scrub system is off and the machine is in the extract mode, pressing this switch will cause the machine to enter
pre-spray mode. The following will occur:
• The scrub system will be enabled with the system congured for pre-spray mode, and the scrub deck will be lowered
while the extraction/vacuum shoes stay up in the locked position.
• The solution system will be enabled for pre-spray mode.
• The detergent system will be enabled for pre-spray mode.
• The travel speed will be limited to a fast pre-spray mode speed setting.
• As soon as the throttle is moved from the neutral position the scrub brushes will start turning. If the direction is
forward, the solution and detergent ow will start. If the direction is reverse, the solution and detergent ow will be
stopped.
• This will indicate the scrub system is activated in the fast pre-spray mode.
• The Scrub ON Switch (J), Solution Pre-spray Switch (C) and the Detergent System switch (B) will be green if the
scrub system is on and the fast pre-spray mode has been selected. The indicators will be off if the scrub system is
off. The indicators will be yellow if the maintenance mode has been selected but the throttle is in neutral.
• Pressing the Scrub On Switch (J) in this mode causes the machine to enter a heavy pre-spray mode. In this mode
the machine moves slower and more solution is sprayed on the carpet. The Heavy Pre-spray Mode indicator (D8)
will change to indicate the scrub system is in heavy pre-spray mode.
If the pre-spray mode is active, pressing this switch will cause the following will occur:
• The scrub brushes will turn off and the scrub deck will rise to the up position.
• The solution ow and detergent ow will be stopped.
• The travel speed limit will return to the transport speed setting.
• The Pre-spray Mode Indicators (D7 and D8) will indicate that the nozzles are turned off and the deck is in the raised
position.
• The indicator in the Scrub OFF Switch (H) 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 has been turned off and the scrub
deck is not up yet the indicator will be red. If there is a fault in the scrub system this indicator will ash red.

Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™ - 19
If the scrub system is activated in extract or scrub mode, pressing this switch will cause the solution system to alternate
between disabled and enabled. The solution ow will only turn on when the throttle is moved from the neutral position
to the forward direction. The solution ow will turn off if the throttle returns to neutral or is moved to reverse. The
solution indicator will be green if the solution is on. If the solution is off, this indicator will be off. The indicator will be
yellow if the solution has been enabled but the throttle is in neutral. If there is a solution system fault, the indicator will
ash yellow.
If the machine is in hard oor scrub mode and the scrub system is off, pressing this switch will pre-wet the brushes.
The Solution Active Indicator (D15) indicator will show a full gauge and solution will be sprayed from the “maintenance”
nozzle while the switch is held.
Vacuum Switch (E)
This switch is used to toggle the vacuum system on or 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 indicator in the Vacuum
Switch (E) will be green if the vacuum is on. It will ash green if the vacuum is in the 10-second delayed-off condition.
If the vacuum is off, this indicator will be off. The indicator will be yellow if the vacuum has been enabled but the throttle
is in neutral. If there is a vacuum system fault, the indicator will ash yellow.
Speed Control Fault Indicator (F)
If a speed control fault occurs (error code 3), the Speed Control Fault Indicator in the Wand Switch (G) will ash the
fault code produced by the Curtis speed control. Refer to the Curtis Controller Diagnostics section for details.
Wand Switch (G)
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 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 and turning the solution ow to the scrub
deck off. The indicator in the Wand Switch will be green when the wand function is on. Otherwise it will be off.
Scrub OFF Switch (H)
Pressing this switch when the scrub system is active or in pre-spray mode will cause the following to occur:
• The scrub brushes will turn off and the scrub deck will rise to the up position. If the extraction/vacuum shoes are
lowered, they will rise with the scrub deck.
• The solution ow will be stopped.
• If the vacuum is running and the machine is in extract mode, the vacuum will shut off after a 10-second delay. If the
vacuum is running and the machine is in the hard oor scrub mode, the vacuum will shut off 10 seconds after the
throttle is moved to the neutral position.
• The travel speed limit will return to the transport speed setting.
• The display will indicate the nozzles are turned off and the deck is in the raised position.
• 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 has been turned off and the scrub deck is not up yet, the
indicator will be red. If there is a fault in the scrub system this indicator will ash red.
Scrub ON Switch (J)
If the machine is in the extract mode, and the scrub system is off or in the restoration mode extraction, pressing this
switch will cause the machine to enter maintenance mode extraction. The following will occur:
• The scrub system will be enabled with the system congured for the LIFT Low Moisture Extract Mode. If the scrub
system was off, the scrub deck and extraction/vacuum shoes will be lowered.

20 - Form No. 56043116 - Adphibian™/AX 651 Multi EDS/AquaPLUS™
• The vacuum system will be enabled. Both vacuum motors will be activated when the machine is in an extract mode.
• The solution system will be enabled for the LIFT mode.
• The travel speed will be limited to the LIFT mode 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 ow will start. If the direction is reverse, the solution ow will be
stopped.
• The LIFT Low Moisture Extract Mode Indicator (D5) will indicate that the scrub system is activated in the LIFT mode.
If the machine is an extract mode and the scrub system is in the LIFT mode, pressing this switch will cause the machine
to enter the restoration extract mode. The following will occur:
• The scrub system will be enabled with the system congured for the restoration mode
• The vacuum system will be enabled. Both vacuum motors will be activated when the machine is an extract mode.
• The solution system will be enabled for the restoration mode
• The travel speed will be limited to the restoration mode 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 ow will start. If the direction is reverse, the solution ow will be
stopped.
• The Restoration Extract Mode Indicator (D6) will indicate that the scrub system is activated in the restoration mode.
If the machine is in the hard oor scrub mode, and the scrub system is off or set to the heavy pressure setting, pressing
this switch will cause the machine to enter light pressure scrubbing mode. The following will occur:
• The scrub system will be enabled with the system congured for light scrub pressure. If the scrub system was off, the
scrub deck will be lowered. The extraction/vacuum shoes will remain locked in the raised position and the operator
will lower the squeegee manually.
• The vacuum system will be enabled. Only one vacuum motor will be activated when the machine is in the hard oor
scrub mode.
• The solution system will be enabled. In hard oor mode the machine has only one solution setting. The Solution
Active Indicator (D15) will show a full gauge and the “maintenance” nozzle is activated.
• The detergent system will be enabled.
• The travel speed will be variable from 20% to 100%.
• 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 ow will start. If the direction is reverse, the solution ow will be
stopped.
• The Light Scrub Pressure Indicator (D14) will indicate the light scrub pressure setting by showing the scrub pressure
icon with a half-full gauge next to it.
If the machine is in hard oor scrub mode and the scrub system is set to the light pressure setting, pressing this switch
will cause the machine to enter the heavy pressure scrubbing mode. The following will occur:
• The scrub system will be enabled with the system congured for heavy scrub pressure.
• The vacuum system will be enabled. Only one vacuum motor will be activated when the machine is in the hard oor
scrub mode.
• The solution system will be enabled. In the hard oor mode the machine has only one solution setting. The Solution
Active Indicator (D15) will show a full gauge and the “maintenance” nozzle is activated.