Nilfisk-Advance 34 RST EcoFlex User manual

4/08 revised 12/13 FORM NO. 56043115
34 RST, 34 RST EcoFlex
Service Manual
Advance Models: 56315900(34RST D), 56315901(34RST D-C)
56315902(34RST D-C / W/Strainer)
56315903(34RST D-C / W/Battery Watering) 56381029 (34 RST X34D)
56381031 (34 RST X34D-C), 56381809 (34RST D-C Strainer HD)

ii - FORM NO. 56043115 - 34 RST
Table of Contents
Table of Contents
Introducon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Parts and Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Other Manuals Available For Your Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Convenons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Transporng the Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Cauons and Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
General Safety Instrucons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Technical Specicaons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Maintenance Schedule. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Baeries and Chargers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Lubricang the Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
PM Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Know Your Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Standard Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
EcoFlex Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Funconal Descripon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Descripon of Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Scrub Mode Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Baery Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Main Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Main Control Board Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Displaying the Control Board Revision Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Recall of Stored Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Turning Fault Detecon On or O: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Low-voltage Cutout Threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Selecng Machine Type (EcoFlex version only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Chemical Opon (EcoFlex Models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Scrub Deck Down Time Period Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Scrub Deck Pressure, Soluon Flow Rate, and Chemical Flow Rate Adjustments . . . . . . . . . . . . . 26
Restoring the Scrub Pressures to Factory Default Sengs . . . . . . . . . . . . . . . . . . . . . . . 26
Regular Scrub Seng Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Heavy Scrub Seng Adjustment: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Extreme Scrub Seng Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Troubleshoong Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Main Controller Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Main Controller I/O Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Service Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Test Mode Input Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Baery Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Speed Controller Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Forward/Reverse Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Reverse Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Test Mode Output Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Descripon of Output Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

iii - FORM NO. 56043115 - 34 RST
Table of Contents
Soluon System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Funconal Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Circuit Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Electrical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Troubleshoong Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Electrical Troubleshoong . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Removal and Installaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Solenoid Valve Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Solenoid Valve Disassembly and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Soluon Filter and Ball Valve Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Scrub System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Funconal Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
M2/M3 - Scrub Brush Motor Run Funcon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
M5 - Scrub Brush Actuator Li Motor Funcon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Scrub System Low-voltage Cut-out Funcon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Electrical Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Removal and Installaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Motor Gimbal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Scrub Brush Deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Scrub Brush li Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Scrub Brush Motor/Gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Recovery System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Funconal Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Vacuum Motor Control Circuit Overview (Auto Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Service Maintenance Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Troubleshoong Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Maintenance of the Recovery Tank Float Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Maintenance of Vacuum Motor Inlet Screen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Removal and Installaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Vacuum Motor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Recovery Tank Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Squeegee System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Squeegee Li Linkage Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Servicing the Squeegee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Adjusng the Squeegee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Removal and Installaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Squeegee Mount Assembly Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Caster Wheel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Wheel Drive System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Funconal Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Drive Motor System Funcon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Electrical Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
A2 Speed Controller Pin Key Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Wheel Drive Troubleshoong guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Removal and Installaon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Drive Motor Transaxle Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Drive Motor Transaxle Removal (connued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Drive Wheel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Tesng the Palm Drive Buons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

iv - FORM NO. 56043115 - 34 RST
Table of Contents
Palm Drive Buon Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Tesng the Reverse Buon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Reverse Buon Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Tesng the Speed Limit Control Potenometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Speed Limit Control Potenometer Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Schemac . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Baeries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Descripon of the Low Voltage Cut-Out Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Descripon Of The Baery Condion Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Specic Wet Cell Baery Informaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Baery Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Charging Baeries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Extending Baery Life. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Removal and Installaon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Baery Tesng. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Maintenance and Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Li Actuator Limit Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Curs Controller Diagnoscs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Funcon of the Speed Controller Status Light and Display . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Diagnoscs Using the Curs Handheld Programmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Fault History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Drive Status LED Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Speed Control Programming Opons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Installaon Checkout for the Curs Speed Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Programming Vehicle Speed Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

5- FORM NO. 56043115 - 34 RST
Introduction
Introduction
This manual will help you get the most from your Advance 34 RST D and 34 RST D-C models, 34 RST D-C
models with Strainer, and 34 RST D-C models with a Battery Watering Kit. Read it thoroughly before
servicing the machine.
Note: Bold numbers and letters in parentheses indicate illustrated items.
Note: All references to right, left, front, or rear in this manual are as seen from the operator’s standpoint.
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 NILFISK-ADVANCE DEALER named below for repair parts or service. Please specify the Model and
Serial Number when discussing your machine.
(Dealer, afx service sticker here.)
Nameplate
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________________________________________
Other Manuals Available For Your Machine
The manuals listed below can be found via Nilsk-Advance’s two electronic supported databases. They are:
• Nilsk-Advance Dealer Customer Zone
• EzParts service / parts CD-Rom
• Instructions for Use (English/Español) – Form Number 56041706
• Parts List – Form Number 56042485
• Curtis Programmer Manual – Form Number 56043101

6- FORM NO. 56043115 - 34 RST
Introduction
Conventions
Forward, backward, front, rear, left or right are intended with reference to the operator’s position, that is to say in
operating position with the hands on the handlebar.
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).
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.
Cautions and Warnings
Symbols
It is important for you to read and understand this manual. The information it contains relates to protecting your
safety and preventing problems. The symbols below are used to help you recognize this information.
Danger! Indicates a potentially hazardous situation which, if not avoided, will result in
death or serious injury.
Warning! Indicates a potentially hazardous situation which, if not avoided, could result in
death or serious injury.
Caution! Indicates a potentially hazardous situation which, if not avoided, could result in
minor or moderate injury.
Caution! When used without the Safety Alert Symbol, indicates a potential situation which,
if not avoided, could result in property or machine damage.

7- FORM NO. 56043115 - 34 RST
Introduction
General Safety Instructions
Warning!
◦This machine should be used only by properly trained and authorized persons.
◦ Never work under a machine without safety blocks or stands to support the machine.
◦ 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.
◦ Do not dispense ammable cleaning agents, operate the machine on or near these agents, or
operate in areas where ammable liquids exist.
Caution!:
◦When operating this machine, ensure that third parties, particularly children, are not
endangered.
◦ Turn the key switch off (O) and disconnect the batteries before servicing electrical components.
◦ Turn the key switch off (O) and remove the key, before changing the brushes, and before
opening any access panels.
◦ This machine is not suitable for picking up hazardous dust.
◦ Do not use on surfaces having a gradient exceeding that marked on the machine.
◦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.
◦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.
◦ Take precautions to prevent hair, jewelry, or loose clothing from becoming caught in moving
parts.
◦ Only use the brushes provided with the appliance or those specied in the instruction manual.
The use of other brushes may impair safety.
◦ Refer to the battery charger OEM product manual for additional specic battery charger
warnings.
Caution!:
◦This machine is not approved for use on public paths or roads.
◦ Use care when using abrasive brushes, scarier discs, or grinding stones. Advance will not be
held responsible for any damage to oor surfaces.
◦ Turn the key switch off (O) and remove the key, before changing the brushes, and before
opening any access panels.
◦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 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.
◦ Do not clean this machine with a pressure washer.
◦All doors and covers are to be positioned as indicated in the instruction manual before using the
machine.

8- FORM NO. 56043115 - 34 RST
Introduction
Technical Specifications
Voltage 36-Volt
Power Source (6) 6-volt Batteries (wet acid and gel cell available)
Battery Capacity 305 amp-hrs.
Protection Grade IPX3
Onboard Battery Charger 36-volt, 25-amp Wet/Gel Compatible
Solution Control Pulse-control gravity feed
Solution Tank 30 gal. (114 L)
Recovery Tank 30 gal. (114 L)
Scrub Motors (2) 0.75 HP (560-watt)
Vacuum Motor 0.75 HP (560-watt) three-stage
Sound Pressure Level (IEC 60704-1) 74.5 dB(A)/20µPa
Drive System 0.5 HP (375-watt) variable forward and reverse; max. speed = 3 mph (4.83 km/hr)
Drive Wheels (2) 13-inch (33 cm) diameter; foam-lled; black non-marking
Scrub Head Type Disc
Scrub Path 34 inches (86 cm)
Gradeability Transport 2% (1.15º)
Cleaning 2% (1.15º)
Max. Productivity @ 3.0 mph 44,880 ft2/hr (4,169 m2/hr)
Max. Productivity @ 1.5 mph 22,440 ft2/hr (2,085 m2/hr)
Scrub Head Size and Type (2) 17 in,(43 cm) Brushes or Pad Holders
Scrub
Pressure
(1) Regular Scrub Max. 90 lbs (40.8 kg)
(2) Heavy Scrub Max. 175 lbs (79.4 kg)
(3) Extreme Scrub Max. 250 lbs (113.4 kg)
Scrub Head Speed 220 RPM
Solution
Flow Rate
(1) Regular Scrub 0.30 gal/min (1.1 L/min) or 100 minutes per solution tank
(2) Heavy Scrub 0.60 gal/min (2.3 L/min) or 50 minutes per solution tank
(3) Extreme Scrub 0.90 gal/min (3.4 L/min) or 33 minutes per solution tank
Squeegee Width 41.9 in (106 cm)
Dimensions (w/o Squeegee) W = 35.5 in (90 cm); L= 62.5 in (159 cm); H = 45 in (114 cm)
Gross Weight w/Standard Batteries 1,245 lbs (565 kg)
Battery Compartment Size See Illustration below; W = 25.5 in (65 cm), L= 29.5 in (75 cm), H = 15 in (38 cm)
14.5"
15"
25.5"
29.5"

9- FORM NO. 56043115 - 34 RST
Introduction
Technical Specifications (continued)

10 - FORM NO. 56043115 - 34 RST
Introduction
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 the Batteries X
Check/Clean Tanks and Hoses (clean recovery tank switch and vacuum inlet screen) X
Check/Clean/Rotate the Brushes/Pads X
Check/Clean the Squeegee X
Check the Water Level in each Battery Cell (does not apply to gel cell batteries) X
Inspect the Brush Housings X
Inspect and Clean the Solution Filter X
Lubricate the Machine X
* Check the Carbon Brushes X
Note: See the individual machine system sections in this manual for maintenance information.
Warning! Turn the key switch off and disconnect the batteries before servicing the
machine.
* Carbon brush inspection intervals and replacement recommendations:
• Check the vacuum motor carbon brushes (two per motor) once a year or after 300 operating hours.
• Check the carbon brushes on the brush and wheel drive motors (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 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 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.
Batteries and Chargers
Attention: See the Electrical System/Batteries
section in this manual 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).
• Threads on the squeegee angle adjustment
knob (B).
• Squeegee tool end wheels (C).
• General pivot points for the brush linkage (D).
Once per quarter, grease the zerk tting on each
of the two caster swivels (E).

Advance 34 RST Models
PM Checklist
Defect Codes
Customer Aneeds adjustment
Bbinding
Address Cdirty or contaminated
Ddamaged, bent or torn
City St Zip Lleaks
Mmissing
Model Serial No. Hours Wworn out
Ref OPERATIONAL INSPECTION ITEMS OK Defect Codes (circle)
Does
Not
Work
1 Palm Drive Button and Reverse Button Operation (check for Fwd/Rev Drive) B D W
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 (1-3) A B
5 Squeegee System (Raise/Lower and Squeegee Tool pick-up Performance) A B D
6 Vacuum Performance (Sealed water lift and 1” open hole adapter, 36v-68/12) C L W
7 Solution Control (Auto On/Off and Flow Volume settings 1, 2 and 3 A B L
8 Battery Charger (Auto turn ON and OFF) D
9 Main Controller Special Program Options (see Electrical System/Main Control
Programming Options). Check all applicable machine settings. Examples: Scrub
mode pressure settings, service test mode, low voltage cut-out, 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 B D L
13 Brush Drive Motor Gimbals C D M
14 Scrub Deck Lift Motor, Brush Housings and Side Wheel D M W
15 Solution Solenoid Valve C L W
16 Solution Tank, Delivery Hoses and Filter clean lter screen C L
17 Vacuum Motor Carbon Brushes (wear limit 3/8” [9.5 mm]) 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 and Cap C D L
21 Squeegee Pick-up Hose back ush C D L
22 Squeegee Tool and Blades (clean, rotate and adjust) A D W
23 Squeegee Tool End Wheels and Squeegee Mount Wheels
(lubricate) 2 mount wheels and 2 end wheels A D W
24 Battery Condition (load test, clean and 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 (grease the zerks) tread wear W
Note: For additional service information, see the individual machine system sections and the Instructions for Use, form #56041706.
WORK COMPLETED BY: ACKNOWLEDGED BY:
Service Technician Signature Date Customer Signature Date

12 - FORM NO. 56043115 - 34 RST
Introduction
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 items shown on the following pages unless otherwise noted. Refer to these pages for the
location of items highlighted in bold in the text.
1 Solution Tank Fill
2 Operator Control Handle
3 Bottle Holders
4 Vacuum Motor Inlet Screen
5 Recovery Tank Cover
6 Nose Cone
6a Detergent (chemical) cover (EcoFlex models)
6b Detergent (chemical) cartridge (EcoFlex models)
7 Scrub Deck
8 Brush Housings (includes Bristle Skirt)
9 Scrub Deck Bumper Wheel
10 Drive Wheel
11 Solution Filter
12 Solution Shutoff Valve
13 SqueegeeAssembly
14 Battery Pack Connector (onboard charger models only)
15 Onboard Battery Charger (not found on all models)
16 Solution Drain Hose/Level Indicator

13 - FORM NO. 56043115 - 34 RST
Introduction
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 Circuit Breaker for the Control Circuit
22 Squeegee Blade Tension Strap
23 Squeegee Blade Latch
24 Squeegee BladeAlignment Pins
25 Squeegee Mount Thumb Nut
26 SqueegeeAdjustment Knob
27 Recovery Tank Drain Hose
28 Reverse Button
29 Palm Drive Buttons
30 Speed Limit Control Knob
31 Control Panel
32 Vacuum Shutoff Switch

14 - FORM NO. 56043115 - 34 RST
Introduction
A1 Control PanelAssy
A2 Speed Control
BT1 Battery (Not Shown)
F1 Fuse, 150Amp
F2 Circuit Breaker, 5 Amp
F3 Circuit Breaker, 30 Amp
K1 Contactor, Brush Motor
K2 Contactor, Vac Motor
L1 Solenoid, Solution
M1 Motor, Wheel Drive
M2 Motor, Left Brush
M3 Motor, Right Brush
M4 Motor, Vac
M5 Motor, BrushActuator
R1 Potentiometer, 100K Ohm, Speed Limit
S3 Switch, Key
S4 Switch, Float (Recovery Tank Full)
S5 Switch, Reverse
S6 Switch, PalmAssy
S7 Switch, PalmAssy
X9 Battery Disconnect
X10 Battery Disconnect

15 - FORM NO. 56043115 - 34 RST
Control Panel
Control Panel
Standard Models
A Key Switch (Main Power)
B Solution Switch
B1 Solution Indicator
D1 Solution Flow Indicator
C Vacuum Switch
C1 Vacuum System Indicator
H Scrub OFF Switch
H1 Scrub OFF Indicator
I- Scrub ON Switch
I1 – Regular Scrub ON Indicator
I2 – Heavy Scrub ON Indicator
I1 and I2 – Extreme Scrub ON Indicators
J Display
J1 Battery Indicator
J2 Hour Meter / Scrub Pressure Indicator / Fault Code
Display / Recovery Tank FULL Indicator
A
B
C
H
I
J
J1 J2
1
2
3
D1
H1
I1 I2
I1
I2
I2
I1
C1
B1
Extreme
Scrub
Pressure
Heavy
Scrub
Pressure
Regular
Scrub
Pressure
High
Solution
Flow
Low
Solution
Flow
Medium
Solution
Flow

16 - FORM NO. 56043115 - 34 RST
Control Panel
EcoFlex Models
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 Detergent 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 (EcoFlex models only)
G EcoFlex Switch
H Scrub OFF
I Scrub ON
Ø.4
!
!
A
E
C
G
F
B
HI
D
D1
D2
D3 D4 D5
D6
D7
D8
D
Regular Heavy Extreme Regular Heavy Extreme
Scrub Scrub Scrub Scrub Scrub Scrub

17 - FORM NO. 56043115 - 34 RST
Control Panel
Functional Description
The control panel is an integral component with the Main controller (A1) circuit board. The controls on the 34 RST
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.
Key Switch (A): The key switch serves as a main control switch to enable or disable operation of the machine.
The key is removable to prevent unwanted operation when not in use. The key switch doesn’t disconnect any power
circuits, but instead, sends a signal to both the Main controller and Curtis Drive controller to indicate the On/Off
function.
Solution Switch (B) - This switch is used to turn the solution system on or off and select the solution ow rate.
Pressing this switch when the scrub system has been activated will increment the solution ow rate as displayed
on the Solution Flow Indicator (D1). The solution ow will turn on when a Palm Drive Button (29) is pressed
with the Reverse Button released (the forward drive position). The solution ow will turn off if both Palm Drive
Buttons (29) are released. Pressing the Solution Switch (B) when the scrub system is off will momentarily turn
the solution ow on (at the high ow rate) to allow pre-wetting of the scrub brushes. Pressing and holding in the
Solution Switch (B) when the scrub system is off will allow continuous solution ow for as long as the switch is
depressed.
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 ow will be stopped.
• The rst 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 or if the machine is stopped (after the scrub system has been turned off), the vacuum will shut off 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” (“Normal”) mode (#1) and the scrub
deck will be lowered. Note that pressing the Scrub-ON switch twice will set the scrub pressure to the “Heavy”
scrub pressure mode (#2). Pressing and holding the Scrub-ON switch in for ve seconds will set the scrub
pressure to the “Extreme” scrub mode (#3).
• The vacuum system will be enabled.
• The solution system will be enabled.
• As soon as either of the Palm Drive Buttons (29) is pressed, the scrub brushes will start turning and the
vacuum will turn on. If the direction is set to forward, the solution ow will start. If the Reverse Button (28)
is pressed, the solution ow will be stopped. If the scrub system is already enabled when the Scrub ON Switch is
pressed, the scrub pressure will increase to the “Heavy” scrub mode (#2). If the Scrub ON Switch is pressed and
held in for 3 to 5 seconds, the scrub pressure will change to the “Extreme” scrub mode (#3). Note that the Scrub
Pressure Indicator (J2) on the panel display will show the current scrub pressure setting (1, 2 or 3).
Note: Boththescrubpressureandthesolutionowratewillreturntotheirdefaultsettingswhenthekeyswitchis
turnedonagainafterthemachinehasbeenswitchedoff.
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 a Palm Drive Button (29) is pressed. It will remain on
for 10 seconds after the Palm Drive Buttons (29) are released.
The vacuum also has an automatic shutoff feature that will turn the vacuum and scrub systems off if the recovery tank becomes full.
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 ow 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.

18 - FORM NO. 56043115 - 34 RST
Control Panel
Chemical Switch (F): The chemical (detergent mixing) option is available on EcoFlex models. Pressing this
switch will turn on or off the chemical option. When active, a small pump will inject chemical (detergent) into the
solution line upstream from the scrub deck. The chemical pump is disabled any time the solution system is inactive.
See the main programming options in this manual to select (activate) the onboard chemical distribution system.
EcoFlex Switch (G): This option is available only on EcoFlex models. By default, the EcoFlex cleaning mode is
active during normal operation to conserve solution and detergent. Press this switch for 2 seconds to override the
EcoFlex cleaning mode and temporarily increase scrub pressure, solution ow, and the detergent ratio. See the main
programming options in this manual to select (activate) the EcoFlex option.
Description of Indicators
Each of the switches on the control panel have an indicator LED adjacent to the switch. Most LEDs are dual
channel and provide two colors within the same LED. In general, the following guidelines apply to the control panel
indicators, and various exceptions to this rule are listed separately:
• A steady green indicator means that the particular system or function is on.
• A ashing 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 ash green indicating that the vacuum is still on but that it will be turning off after the
delay period.
• A steady yellow indicator means that the particular function has been enabled and in a ready state, 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 and/or reverse.
• A ashing yellow indicator means that a fault has occurred in the particular system. An example of this would
be an over-current fault on one of the motors.
Solution System (B) Indicator:
• This indicator will be off if the solution is disabled and turned off.
• 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 ash yellow if there is a solution system fault.
Scrub ON Indicators (I1 & I2):
• For Regular scrub mode, the (I1) LED will be active.
• For Heavy scrub mode, the (I2) LED will be active.
• For Extreme scrub mode, both (I1&I2) LED’s will be active.
• When a scrub mode (regular, heavy, or extreme) is active and the drive paddle is in
the neutral position, the LED’s (I1 and/or I2) will be solid yellow.
• When a scrub mode (regular, heavy, or extreme) is active and the drive paddle is in
the drive position, the LED’s (I1 and/or I2) will be solid green.
• Both indicators will be off if the scrub system has been turned off.
Scrub OFF Indicator (H1):
• This indicator has green and red colors.
• The indicator will be green if the scrub system is off and ready to be activated.
• The indicator will be red if the scrub system has been turned off and the scrub deck is not up yet.
• The indicator will ash red if there is a fault in the scrub system.
• The indicator will be off if the scrub system has been activated.
B
I1 I2
H1
H I

19 - FORM NO. 56043115 - 34 RST
Control Panel
Vacuum System (C) Indicator:
• This indicator will be off if the vacuum is disabled and turned off.
• This indicator will be green if the vacuum is on.
• This indicator will ash 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 ash yellow if there is a vacuum system fault.
Wand Switch (E) Indicator:
• This indicator uses green color only.
• 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.
• This indicator is also the Status LED indicator, and will ash green with an error code from the
Curtis Drive controller (See the Wheel System, Traction chapter for details).
Chemical Switch (F) Indicator:
• This Indicator will be green if the chemical system is on.
• This indicator will be yellow if the chemical system is enabled but the drive paddle is in neutral.
• This indicator will be off if the chemical system is disabled and turned off.
EcoFlex Switch (G) Indicator:
• This indicator will be green if the EcoFlex system is on.
• This indicator will ash green if the EcoFlex system is in a temporary override state.
• This indicator will be off if the EcoFlex system is disabled and turned off.
Scrub Mode Indicators
The Solution system and Scrub system have three scrub modes
(regular, heavy, and extreme). These scrub modes are jointly
controlled when the Scrub On Switch (I) is pressed, but the
Solution system can be controlled separately by pressing the
Solution Switch (B).
• Pressing the Scrub On Switch (I) once will set both the scrub
mode and solution mode to regular (and clear any solution
system overrides).
• Pressing the Scrub On Switch (I) twice will set both the scrub
mode and solution mode to heavy (and clear any solution system
overrides).
• Pressing the Scrub On Switch (I) for 5 seconds will set both
the scrub mode and solution mode to extreme (and clear any
solution system overrides).
• Pressing the Solution Switch (B) once, twice, or for 5 seconds;
will change the solution mode accordingly, but without changing
the scrub mode.
Non-EcoFlex Display: The solution mode is displayed in a bar
graph adjacent to the solution switch (B), and the scrub mode is
indicated in the display (J2) with a number representing the mode.
(1 = regular, 2 = heavy, 3 = extreme).
EcoFlex Display: The solution mode and scrub mode are both
shown in bar graphs on the main display (D).
C
E
F
G
2
Ø.4
03
B
J2
D
Regular
Heavy
Extreme
Regular
Heavy
Extreme
Regular
Heavy
Extreme
Solution Scrub

20 - FORM NO. 56043115 - 34 RST
Control Panel
Battery Indicator
The charge state of the battery is shown in the main display area of the control
panel. For standard models, this is indicated by three colored LED’s (J1). For
EcoFlex models, this is shown with a bar graph (D5) in the main display. For
EcoFlex models, when the battery is depleted and needs to be charged, the charge
indicator (D8) will be displayed.
Also note that for EcoFlex models, when in Service
Mode, the actual battery voltage will be displayed
numerically in the lower left corner of the main
display.
Hour Meter: For standard models, the (J2) display
will ash through the total number of run hours
on the machine. The run hours will be displayed sequentially when the key switch is rst turned on provided the
recovery tank is not full and there is no fault condition to generate a fault code number. For example, a sequential
display of “1-3-5-.-6” indicates that there are 135.6 total hours on the machine. For EcoFlex models, the (D3) display
will show the total run hours of the machine.
2
Ø.4
03
D5
J1 J2
D3
!
D8