NILFISK SC1500-X20D Service Manual
SC1500
Service Manual
Advance SC1500 Models: 56104000 (X20D), 56104001 (X20R)
Nilsk SC1500 Models: 56104002 (SC1500-51D)
English
5/13 Form No. 56043166
Contents
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Machine Congurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Service Manual Purpose and Application . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Other Reference Manuals and Information Sources . . . . . . . . . . . . . . . . . . . . 6
Diagnostic and Service Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Parts and Service. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Modications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Cautions and Warning Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
General Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Prop Rod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Moving the Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Transporting the Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
General Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Overall Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Fastener Torque Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Lubrication Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Major Machine Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Machine Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
iiService Manual – SC1500
General Maintenance Information . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Maintenance Schedule. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Key Switch, Emergency Stop and Horn Switch . . . . . . . . . . . . . . . . . . . .16
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Speed and Direction Controls and Indicators. . . . . . . . . . . . . . . . . . . . . .18
Scrub Controls and Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Solution Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Detergent System Controls and Indicators . . . . . . . . . . . . . . . . . . . . . . .20
Burst of Power Switch and Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Vacuum Power Adjustment Switch and Indicators . . . . . . . . . . . . . . . . . .22
Information Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Battery Status and Charger Screens . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Chassis System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Major Chassis Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Platform Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Control System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Fault Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Fault Code Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
System Disabled by Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Service Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
To Access the Service Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Service Test Mode Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
To Exit the Service Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Programming Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
To Access the Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
To Access a Submenu from the Main Menu . . . . . . . . . . . . . . . . . . . . . . 35
To Change a Programmable Option in a Submenu . . . . . . . . . . . . . . . . . .35
Deck Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Low Battery Voltage Cutout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Battery Charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Burst Of Power Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Detergent (EcoFlex™) Option . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Chemical Rate Bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Open Fault Detect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Display Rev Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Lock Out Brush Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Lock Out Solution Flow Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Backup Alarm Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Forward Alarm Volume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Horn Volume. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
Restore Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Fault Recall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Service Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
Extra Information on the Graphic Display . . . . . . . . . . . . . . . . . . . . .42
Frozen Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Panel Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Save Scrub Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
A1 Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
E1 Curtis 1210 Speed Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
A1 Control Board Shop Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Contents iiiService Manual – SC1500
Electrical System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
On-board Battery Charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Battery Charger Circuit Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . .54
Battery Charger Not Plugged In . . . . . . . . . . . . . . . . . . . . . . . . . .54
Battery Charger Plugged In. . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Electrical Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Wiring Diagram, p/n 56104081, Rev. B, Page 1 . . . . . . . . . . . . . . . . . . . . 58
Wiring Diagram, p/n 56104081, Rev. B, Page 2 . . . . . . . . . . . . . . . . . . . . 59
Wiring Harness Diagram, p/n 56104082, Rev. B . . . . . . . . . . . . . . . . . . . .60
Electrical Connector Pin-out Assignments . . . . . . . . . . . . . . . . . . . . . . . . . 61
To Locate and Identify a Connector . . . . . . . . . . . . . . . . . . . . . . . . . . .61
Connector Pin-out Assignment Tables . . . . . . . . . . . . . . . . . . . . . . . . .62
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69
Recovery System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70
Circuit Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Vacuum Motor Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71
Vacuum Motor On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Vacuum Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
Special Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
Scrub System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Scrub Deck and Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
20D Scrub Deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
20R REV™ Deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Brush Motor Contactor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
Deck Actuator Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
Circuit Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
Scrub Brush Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
Scrub Brush Motor Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Scrub Brush Motor On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
Deck Actuator Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Scrub Deck Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85
Scrub Deck in Vacuum-only Position . . . . . . . . . . . . . . . . . . . . . . . .85
Scrub Deck at Normal Scrub Pressure . . . . . . . . . . . . . . . . . . . . . . .86
Scrub Deck at Extra Scrub Pressure . . . . . . . . . . . . . . . . . . . . . . . . 86
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Scrub Deck . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
Scrub Deck Actuator Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Scrub Deck Actuator Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96
Contents ivService Manual – SC1500
Solution System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
Solution Tank, Water Filter and Valves . . . . . . . . . . . . . . . . . . . . . . . . 97
Solution Solenoid Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
Detergent System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Circuit Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Solution Solenoid Valve Off . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
Solution Solenoid Valve On . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Detergent Pump Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .102
Detergent Pump On . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Cleaning the Water Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .108
Component Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Nominal Solution Flow Rates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Squeegee System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .110
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
Steering System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113
Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Wheel System - Traction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116
Functional Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .116
Wheel Drive Motor Circuit Descriptions . . . . . . . . . . . . . . . . . . . . . . . 117
Power to the E1 Curtis 1210 Speed Controller. . . . . . . . . . . . . . . . . .117
Speed Control Drive Functions . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Speed Control Communication with the A1 Control Board . . . . . . . . . . . 119
Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Maintenance and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Speed Control Programming Options . . . . . . . . . . . . . . . . . . . . . . . . . 123
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
General Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
E1 Curtis Speed Controller Diagnostics . . . . . . . . . . . . . . . . . . . . . . . 124
Diagnostics Method A - Graphic Display and Detergent On/Off Indicator . . . 124
Diagnostics Method B - Curtis Programmer . . . . . . . . . . . . . . . . . . . 125
Diagnostic History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .125
Status LED Fault Code Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Removal and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Drive Wheel Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127
Drive Wheel Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .129
Steering Spindle Bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131
Drive Wheel Motor Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Replacing the Motor Brushes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .134
Shop Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
E1 Curtis 1210 Speed Controller – Low Current . . . . . . . . . . . . . . . . 134
E1 Curtis 1210 Speed Controller – Output. . . . . . . . . . . . . . . . . . . .135
General Specications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135
Special Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Contents vService Manual – SC1500
General Information
Machine Congurations
The SC1500 machines are battery-powered commercial oor scrubbing machines suitable for use in hotels,
schools, hospitals, factories, shops, ofces, rental businesses and similar applications.
The SC1500 is available in two scrub system congurations:
• The 20D models have a 20” brush plate assembly to accommodate a variety of disc brushes. The 20D
models can also be used with several grades of pads by using the optional pad holder.
• The 20R models have a 20” REV™ scrub system that uses a pad driver for use with REV™ deck pads only.
The machine is powered by either four 6-volt batteries or two 12-volt batteries, connected in series, to
provide 24 VDC to the motors and controls.
Service Manual Purpose and Application
6Service Manual – SC1500
This Service Manual is a technical resource designed to aid service personnel in maintaining and repairing
the Advance SC1500 Scrubbers to ensure optimum performance and long service life. Please read it
thoroughly before servicing your machine.
Other Reference Manuals and Information Sources
Model Name Model Number
Advance SC1500 56104000, 56104001 56042591
Nilsk SC1500 56104002 (SC1500-51D) 56042592
These manuals can be found on the following Nilsk-Advance’s electronic supported databases:
• Nilsk-Advance Dealer Customer Zone
• Advance website: www.advance-us.com
• Nilsk website: www.nilsk.com
• EzParts service/parts CD-ROM
Parts List
Form Number
Instructions for Use
Form Number
56091047 - English, Español,
Français Português
Diagnostic and Service Tools
In addition to a full set of metric and standard tools, the following items are required in order to successfully
and quickly perform troubleshooting and repair of Advance commercial oor cleaning equipment.
• Digital voltmeter (DVM) with DC current clamp
• Hydrometer
• Battery load tester for checking batteries
• Set of torque wrenches
General Information 7Service Manual – SC1500
These tools are also available from Nilsk-Advance, Inc.:
• Curtis 1311 hand held programmer, p/n 56409441,
• Vacuum water lift gauge, p/n 56205281.
Conventions
All references to right, left, front and rear in this manual are as seen from the Operator’s position.
Parts and Service
Repairs should be performed by an Authorized Advance Service Center that employs factory-trained service
personnel and maintains an inventory of Advance original replacement parts and accessories.
Call the 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, afx service sticker here.)
Modications
Modications and additions to the cleaning machine which affect capacity and safe operation shall not be
performed by the customer or user without prior written approval from Nilsk-Advance Inc. Unapproved
modications will void the machine warranty and make the customer liable for any resulting accidents.
Nameplate
The Model Number and Serial Number of the machine are
shown on the Nameplate located on the inside of the battery
compartment.
This information is needed when ordering repair parts for the
machine.
General Information 8Service Manual – SC1500
Cautions and Warning Symbols
Nilsk-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
Specic Cautions and Warnings are included to warn you of potential danger of machine damage or bodily
harm. This machine is for commercial use, for example in hotels, schools, hospitals, factories, shops and
ofces other than normal residential housekeeping purposes.
Warning! Be sure to follow these safety precautions to avoid situations that could cause
severe personal injury.
• This machine should only be used by properly-trained and authorized personnel.
• This machine is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge.
• Avoid sudden stops when on ramps or inclines. Avoid abrupt sharp turns. Use low speed down
ramps.
• Observe the Gross Vehicle Weight, GVW, of the machine when loading, driving, lifting or
supporting 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 the 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 underneath 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.
General Information 9Service Manual – SC1500
• Only use the brushes provided with the machine or those specied in the Instructions for Use.
The use of other brushes may impair safety.
• Do not clean this machine with a pressure washer.
Caution! Be sure to follow these safety precautions to avoid situations that could cause
personal injury, damage to property or equipment damage.
• This machine is not approved for use on public paths or roads.
• This machine is not suitable for picking up hazardous dust.
• Do not use scarier discs and grinding stones. Advance will not be held responsible for any
damage to oor surfaces caused by scariers or grinding stones (can also cause damage to the
brush drive system).
• When operating this machine, ensure that individuals in close proximity, particularly children,
are not endangered.
• Before performing any service function, carefully read all instructions pertaining to that
function.
• Do not leave the machine unattended without rst turning the Key Switch off (O), removing the
key and applying the parking brake.
• Turn the Key Switch off (O) 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 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 use on surfaces having a gradient exceeding that marked on the machine.
• All doors and covers are to be positioned as indicated in the Instructions for Use before using
the machine.
• This machine should only be used and stored indoors.
Caution! Do not clean this machine with a pressure washer.
Prop Rod
To prevent the Control Panel Housing / Recovery
Tank Cover
causing injury, always engage the Prop Rod as
shown before working under the Panel Housing
/ Recovery Tank Cover
from dropping unexpectedly and
.
General Information 10Service Manual – SC1500
Control Panel
Housing/
Recovery
Tank Cover
Prop Rod
(engaged)
Moving the Machine
The drive wheel motor has a built-in
electromagnetic brake that engages whenever
the Key Switch is Off or the Go Pedal is
released. You can manually override this
brake if necessary by reaching up around the
back of the front drive wheel and rotating the
Brake Arm up as shown. This should only be
done if you need to push or pull the machine.
Remember to reengage the Brake Arm once you
nish moving the machine.
Note: Turn the drive wheel 45° to
the right for easier access to
the Brake Arm.
Brake
Arm
Brake
Arm
Transporting the Machine
Caution! Before transporting the machine on an open truck or trailer, make sure:
• All tanks are empty.
• The recovery tank cover is latched securely.
• The machine is tied down securely. (Refer to the Tie-down Locations below.
• The machine’s electromagnetic brake is engaged (not manually overridden).
General Information 11Service Manual – SC1500
Left
Tie-down
Front
Tie-down
Right
Tie-down
Specications
General Specications
Model SC1500-X20D SC1500-X20R
Model No. 56104000 56104001
Battery Voltage 24V
Battery Capacity - Amp Hours 260
Protection Grade IPX3
Sound Pressure Level IEC 60335-2-72: 2002 Amend.
1:2005, ISO 11201 dB(A)
Gross Vehicle Weight (w/full solution tank, empty
recovery tank, heaviest batteries, no Operator
Net Weight ((w/empty solution and recovery tanks, no
batteries or brushes
Maximum Operator/Rider Weight 250 lbs / 113.4 kg
Scrub Deck Width 20 in / 50.8 cm
Squeegee Width 26.5 in / 67.3 cm
Tank Capacities
Static Wheel Loading with 179 lb. rider Front: 362 lbs / 164 kg Rear: 275 lbs / 125 kg
Static Wheel Pressure with 175 lb. rider Front: 116 psi / 8.2 kg/cm
Sound Pressure Level (IEC 60704-1)TR12116 63.33 dB(A)/.029344 µPa
Vibrations at the Hand Controls (ISO 5349-1) <.5 m/s
Vibrations at the Seat (EN 1032) <2.5 m/s2
Gradeability
63 dB LpA, ±3 dB KpA 62 dB LpA, ±3 dB KpA
718 lbs / 326 kg
354 lbs / 161 kg
Solution Tank: 11.7 gal / 44.28 L
Recovery Tank: 13.5 gal / 46.67 L
2
Rear: 139 psi / 9.8 kg/cm
2
Transport: 14.5 percent / 8.2 degrees
Cleaning: 8.0 percent / 4.5 degrees
2
Overall Dimensions
1.13
[28,7]
1.13”
[28,7 mm]
General Information 12Service Manual – SC1500
48.5
48.5” [123,2 cm]
[1232]
Fastener Torque Specications
Size Plated Steel Stainless Steel
#10 42 in.-lb. [4.75 N-m] 28 in.-lb. [3.17 N-m]
1/4“ 100 in.-lb. [11.3 N-m] 67 in.-lb. [7.57 N-m]
5/16” 17 ft.-lb. [23.05 N-m] 11 ft.-lb. [14.91 N-m]
3/8” 31 ft.-lb. [42.03 N-m] 20 ft.-lb. [27.12 N-m]
Standard Torque
Specications (unless
otherwise specied)
1/2” 75 ft.-lb. [101.69 N-m] 50 ft.-lb. [67.79 N-m]
3/4” 270 ft.-lb. [366.07 N-m] 180 ft.-lb. [244.05 N-m]
M5 61 in.-lb. [6.89 N-m] 36 in.-lb. [4.07 N-m]
M6 9 ft.-lb. [12.2 N-m] 62 in.-lb. [7.0 N-m]
M8 22 ft.-lb. [29.83 N-m] 13 ft.-lb. [17.63 N-m]
M10 44 ft.-lb. [59.66 N-m] 25 ft.-lb. [33.9 N-m]
M12 70 ft.-lb. [94.91 N-m] 40 ft.-lb. [54.23 N-m]
52.5”
52.5
[1332]
[133,4 cm]
24.5
24.5” [62,2 cm]
[623]
27.9
27.9” [70,9 cm]
[710]
General Information 13Service Manual – SC1500
Maintenance
General Maintenance Information
Keep the machine in top condition by closely following the maintenance schedule. Maintenance intervals
given are for average operating conditions. Machines used in severe environments may require service more
often.
Caution! Do not pressure-wash the machine
Maintenance Schedule
Maintenance Item Daily Weekly Monthly Yearly
Charge Batteries X
Check/Clean Tanks & Hoses X
Check/Clean the Brushes/Pads X
Check/Clean the Squeegee X
Check/Clean Vacuum Shutoff Float X
Empty/Clean Debris Catch Tray in Recovery Tank X
Check Each Battery Cell(s) Water Level X
Inspect Scrub Housing Skirt X
Inspect and Clean Solution Filter X
Purge Detergent System X
Lubricate Machine X
* Check Carbon Brushes X
** Replace vibration damping isolators (REV model only) X
* Have an Authorized Advance Service Center check the vacuum motor carbon motor brushes once a year or
after 300 operating hours. The brush and drive motor carbon brushes should be checked every 500 hours
or once a year.
** This maintenance procedure must be performed by an authorized Advance Service Center.
General Information 14Service Manual – SC1500
Lubrication Locations
• Once a month apply Lubriplate® 730-2 or equivalent grease to, or grease the tting on, the following
components. Avoid using too much grease.
– Hex Shaft/Steering Tube Assembly
– Drive Wheel Chain
– Drive Chain Idler Sprocket (grease tting)
– Steering Chain
• Once a month apply light machine oil to the Upper and Lower Steering Shaft Universal Joints.
Upper
Steering
Shaft
U-Joint
Hex
Shaft
Steering
Tube
Assembly
Lower Steering
Steering
Chain
Shaft U-Joint
Drive Chain
Idler
Sprocket
(grease
tting)
Drive
Wheel
Chain
Major Machine Components
Control
System
General Information 15Service Manual – SC1500
Electrical
System
Solution
System
Recovery
System
Chassis
System
Squeegee
Assembly
Scrub
System - 20D
Scrub
System - REV
Machine Controls
Key Switch, Emergency Stop and Horn Switch
• Key Switch – controls the battery power to the machine.
Note that you must turn the Key Switch to the on (I)
position before stepping onto the machine platform.
General Information 16Service Manual – SC1500
Key
Switch
• Emergency Stop – shuts off all battery power to the
machine when pressed. To reset the Emergency Stop, rotate
the red knob clockwise.
• Horn Switch – sounds the horn when pressed.
Emergency
Stop
Horn
Switch
General Information 17Service Manual – SC1500
Circuit Breakers
The Circuit Breakers are mounted on the top of the control panel. To reset a Circuit Breaker, press the
corresponding reset button
• 50-amp Circuit Breaker – labeled CB1 in the
Ladder Diagram; controls the positive voltage
to the E1 Curtis 1210 Speed Controller.
• 5-amp Circuit Breaker – labeled CB2 in the
Ladder Diagram; controls the positive voltage
to the key switch and to the battery positive
inputs J3-1 and J3-8 on the A1 Control Board.
• 20-amp Circuit Breaker – labeled CB3 in the
Ladder Diagram; controls the positive voltage
to the contacts on solid state relay K1. Relay
K1 controls the positive voltage to the vacuum
motor, M4.
• 25-amp Circuit Breaker – labeled CB4 in the
Ladder Diagram; controls the positive voltage
to the contacts on relay K2. Relay K2 controls
the positive voltage to the brush motor, M5/M6.
50-amp
Circuit
Breaker CB1
20-amp
Circuit
Breaker CB3
5-amp
Circuit
Breaker CB2
25-amp
Circuit
Breaker CB4
General Information 18Service Manual – SC1500
Speed and Direction Controls and Indicators
• The Speed Adjustment Knob – labeled R1 in the Ladder Diagram;
100K potentiometer that controls the machine speed in both
forward and reverse.
• The Forward and Reverse Drive Switches select the direction the machine will move when the Go Pedal is
pressed. The corresponding Drive Indicator will light when a Drive Switch is selected.
– Forward Drive Switch – selects the forward direction.
Forward Drive
– Forward Drive Indicator – lights to indicate that the
Forward Drive Switch has been selected. Note that this
indicator is lighted in the adjacent drawing.
– Reverse Drive Switch – selects the reverse direction.
Speed
Adjustment
Knob R1
Indicator
Forward
Drive Switch
– Reverse Drive Indicator – lights to indicate that the
Reverse Drive Switch has been selected.
• Operator Presence Pedal – ensures
that the Operator is standing on
the Platform before the Go Pedal
will drive the machine forward or
reverse.
• Go Pedal – drives the machine in
the direction selected with the
Forward Drive or Reverse Drive
Switches.
Reverse
Drive Switch
Reverse Drive
Indicator
Go
Pedal
Operator
Presence
Pedal
Platform
Scrub Controls and Indicators
Note: Thescrubpressure,recoveryvacuumpower,solutionowrateanddetergentstrength
settings that will be in effect when the One-touch™ Scrub On/Off Switch is pressed is
determined by the Save Scrub Settings submenu in the Programming Options.
• IfSAVE SCRUB SETTINGS/YES is selected, the machine will use the scrub settings that
were in use when the key switch was switched off.
• IfSAVE SCRUB SETTINGS/NO is selected, the machine will use the default settings.
(Refer to the Save Scrub Settings subsection in the Control System section.)
General Information 19Service Manual – SC1500
• One-touch
™
Scrub On/Off Switch – lowers the scrub deck and
squeegee to the oor and enables the scrub, vacuum, solution
and detergent systems. The scrub motor, solution system,
detergent pump and vacuum motor will start when you press
the Go Pedal.
• Scrub On/Off Indicator – lights to indicate that the scrub system
is active.
• Extra Pressure Switch – toggles the scrub pressure
between standard pressure (bottom box lled as
shown) and extra pressure (both top and bottom
boxes lled).
• Extra Pressure Indicator – lights to indicate that the
scrub system is active.
• Scrub Brush Pressure Bar Graph – displays the
scrub pressure on the graphic display as follows:
– Bottom box lled – standard scrub pressure (as
shown).
– Top and bottom boxes lled – extra scrub
pressure.
Scrub On/Off
Indicator
One-touch™
Scrub On/Off
Switch
Scrub
Pressure
Bar Graph
Extra
Pressure
Switch
Extra
Pressure
Indicator
General Information 20Service Manual – SC1500
Solution Controls and Indicators
• Solution Flow Adjustment Switch – functions as follows:
– When the scrub system is enabled, pressing the Solution
Flow Adjustment Switch
will cycle the solution ow rates
from low (bottom box lled as shown), to medium (bottom
two boxes lled), to high (all three boxes lled), then to off
(no boxes lled).
– When the scrub system is not enabled (machine in
transport mode), pressing and holding the Solution Flow
Adjustment Switch
will dispense solution at the high ow
rate to pre-wet the oor. The solution will continue to
dispense as long as the Solution Flow Adjustment Switch is
pressed.
• Solution On/Off Indicator – lights to indicate that the solution system is active.
• Solution Flow Rate Bar Graph – displays the solution ow rate on the graphic display as follows:
– Bottom box lled – low solution ow rate (as shown).
Solution
Flow Rate
Bar Graph
Solution On/Off
Indicator
Solution
Flow Adjustment
Switch
– Bottom two boxes lled – medium solution ow rate.
– All three boxes lled – high solution ow rate.
– All three boxes empty – solution system off.
Detergent System Controls and Indicators
• Detergent Strength Switch – functions as follows:
– When the scrub system is enabled, pressing
the Detergent Strength Switch will cycle the
detergent ow rate from weak (bottom box
lled as shown), to strong (top and bottom
boxes lled), then to off (no boxes lled).
Detergent On/Off
Indicator
– When the scrub system is not enabled
(machine in transport mode), pressing
and holding the Detergent Strength Switch
Detergent
Strength Switch
and Solution Flow Adjustment Switch
simultaneously will enable the purge mode.
• Detergent On/Off Indicator – indicates that the detergent ow rate is a rate other than zero.
• Detergent Indicator Bar Graph – displays the detergent ow rate, ratio and percentage on the graphic
display as follows:
Detergent
Indicator
Bar Graph
– Bottom box lled – weak detergent ow rate (as shown).
– Top and bottom boxes lled – strong detergent ow rate.
– Both boxes empty – detergent system off.
• Detergent Purge Screen – displays the Chemical Purge Icon to
indicate that the detergent purge cycle is active. To start
the purge cycle and display the Detergent Purge Screen, press
and hold the Detergent Strength Switch and the Solution Flow
Adjustment Switch simultaneously for three seconds. The
Detergent On/Off Indicator will ash and the purge cycle will last
for approximately 10 seconds.
Burst of Power Switch and Indicator
General Information 21Service Manual – SC1500
Chemical
Purge
Icon
Detergent Purge Screen
• Burst of Power Switch – temporarily overrides the current machine
settings to increase the machine’s cleaning aggressiveness by
performing the following:
– Increases the scrub pressure from standard pressure to extra
pressure.
Burst of Power
Indicator
Burst of
Power Switch
– Increases the solution ow rate by one level (off to low, low to
medium or medium to high).
– Increases the detergent ow rate to the strong level (off to
weak or weak to strong). Note that this will only happen if the
detergent option is installed.
– Increases the vacuum power from low/quiet to high/standard. Note that the vacuum motor will not
switch from off to low/quiet because of the assumption that if the vacuum is off, the user must be in
double-scrubbing mode and wishes to stay in that mode.
If any one of the functions listed above is already performing at its maximum possible rate, the Burst of
Power Switch
will have no effect on that function but will still affect the other functions. If the detergent
option is not installed, the Burst of Power will not affect detergent ow but will still affect the other
functions.
The Burst of Power mode lasts for a maximum duration of 60 seconds but can be terminated early by
pressing the Information Switch, Burst of Power Switch, Scrub On/Off Switch, Detergent Strength Switch,
Solution Flow Adjustment Switch, Extra Pressure Switch or the Vacuum Power Adjustment Switch.
When the Burst of Power period expires or is terminated, all scrubbing parameters that were changed
return to their original state before the Burst of Power Switch was pressed.
• Burst of Power Indicator – indicates the following:
– The Burst of Power Indicator will be off when the Burst of Power Switch switch is not functional because
it has not been enabled in the Hidden Menu, or because the machine is operating in a mode for which
the Burst of Power option does not apply.
– The Burst of Power Indicator will be solid green when the machine is operating in a reduced/normal
scrubbing mode but the Burst of Power option is available.
– The Burst of Power Indicator will change color from green to yellow and ash for 60 seconds while the
Burst of Power option is active. The Burst of Power Indicator will ash at a rate of 1 Hz for the rst 50
seconds, then at a rate of 2 Hz for the last 10 seconds to indicate that the Burst of Power option is
about to end.
Vacuum Power Adjustment Switch and Indicators
• Vacuum Power Adjustment Switch – functions as
follows:
– Pressing the Vacuum Power Adjustment
Switch
while in the scrub mode will cycle
Quiet
Vacuum
Mode
Indicator
the vacuum mode from low/quiet (bottom
box lled as shown), to high/standard (both
top and bottom boxes lled), then to off (no
boxes lled). Note that the vacuum motor
will switch on when the machine is driven
forward. When the machine is driven in
reverse or stops, or if the Vacuum Power
Adjustment Switch
is pressed while the
vacuum motor is running, the vacuum motor
will continue to run for 10 seconds, then
switch off.
Pressing the Vacuum Power Adjustment Switch during this 10-second delay period will shut off the
vacuum motor immediately.
Vacuum
Level Bar
Graph
Standard Vacuum
Mode Indicator
Vacuum Power
Adjustment
Switch
General Information 22Service Manual – SC1500
– When the scrub system is not enabled (machine in transport mode), the Vacuum Power Adjustment
Switch
functions as follows:
◦ Pressing the Vacuum Power Adjustment Switch once will enable the wet vacuuming mode. The
vacuum power will default to the low/quiet mode and the deck actuator will drive the deck to the
“vacuum only” position.
◦ Pressing the Vacuum Power Adjustment Switch a second time will switch the vacuum motor to high/
standard mode.
◦ Pressing the Vacuum Power Adjustment Switch a third time will disable the wet vacuuming mode.
The actuator will immediately raise the deck, and the vacuum motor will turn off after a 10-second
delay.
Note: IftheOne-touch™ Scrub On/Off Switch is pressed while wet vacuuming, the wet vacuuming
mode will be disabled. The scrub deck and vacuum motor control will revert to the standard
scrub mode operation.
• Quiet Vacuum Mode Indicator – indicates that the vacuum motor is in the low/quiet mode.
• Standard Vacuum Mode Indicator – indicates that the vacuum motor is in the high/standard mode.
• Vacuum Level Bar Graph – displays the vacuum motor power mode as follows:
– Bottom box lled – low/quiet mode (as shown).
– Top and bottom boxes lled – high/standard mode.
– Both boxes empty – vacuum motor off.
Information Switch
General Information 23Service Manual – SC1500
• Information Switch – displays the Information Screen on the
graphic display. The Information Screen will also be displayed
if a signicant error occurs that results in the shutdown of
some machine system. The graphic display will then display
Hour
Meter
Fault
Codes
the Information screen until next key switch cycle.
The Information Screen shows the Hour Meter, Fault Codes and
the Battery Charge Level Indicator.
• Hour Meter – displays the total number of run hours on the
machine.
• Fault Codes – displays the wrench icon and any active
two-digit fault code. If more than one error exists, the display
will sequence through the error codes at one-second intervals.
(Refer to the Fault Codes subsection in the Control System
Battery
Charge Level
Indicator
Information
Switch
section.)
• Battery Charge Level Indicator – indicates the charge level of the batteries according to the number of lled
“bars” in the battery icon.
– Five solid bars indicates a full battery charge.
– No solid bars (empty battery icon) indicates that the batteries are discharged.
Battery Status and Charger Screens
• Battery Low Voltage Screen – displayed when the battery
voltage drops to approximately 21.75 volts. The graphic
display will alternate between the Battery Status Screen
and the “normal” display at ve-second intervals to alert the
Operator that the batteries need charging and the remaining
battery time is very short.
Note that:
– When the voltage in AGM or Gel batteries drops to 21.75 volts, the A1 Control Board switches off the
scrub motor, solution system and detergent pump, and raises the scrub deck. The vacuum motor can
still remain on.
– When the voltage in AGM or Gel batteries drops to 21.6 volts, the A1 Control Board switches off the
vacuum motor.
– When the voltage in Wet batteries drops to 20.55 volts, the A1 Control Board switches off the scrub
motor, solution system and detergent pump, and raises the scrub deck. The vacuum motor can still
remain on.
– When the voltage in Wet batteries drops to 20.4 volts, the A1 Control Board switches off the vacuum
motor.
Battery Low Voltage Screen
• Battery Charger Screen – displayed when AC power is applied
to the onboard charger. Note that this will disable all
machine functions. The Battery Charger Screen displays the
Battery Type and Battery Charge Level Indicator. The Battery
Charge Level Indicator
will display full once the batteries are
done charging.
General Information 24Service Manual – SC1500
Battery
Type
Battery Charge
Level Indicator
Battery Charger Screen
Chassis System
Major Chassis Components
The Chassis System provides the framework on which the machine components are mounted.
The Battery Tray
contains the batteries
and connectors and is
mounted to the top of
the Chassis Weldment.
The Platform Assembly
provides a place for the
Operator to stand and
houses the Operator
Presence Pedal and Go
Pedal.
The Battery Charger
is mounted to the
bottom of the Chassis
Weldment
.
The non-traction
Wheels are held by at
washers and M8 x 20
screws that thread into
the axle in the Chassis
Weldment
.
The Drive Wheel
Assembly
is fastened
to the Spindle Mount
Weldment
which
bolts to the Chassis
Weldment
.
Battery
Tray
Chassis
Weldment
Spindle
Mount
Weldment
Battery
Charger
Link Bar
Platform
Assembly
Wheel (2)
Linkage
Bar (2)
25Service Manual – SC1500
The Link Bar and the
two Linkage Bars are
bolted to vertical
plates on the bottom of
the Chassis Weldment
and support the Scrub
Deck.
Drive
Wheel
Assembly
Chassis System 26Service Manual – SC1500
Platform Switches
The Operator Presence Pedal and Go Pedal are mounted on the top of the Platform.
• When the Operator stands on the Platform, he/she presses the Operator Presence Pedal which actuates the
Operator Presence Switch (called the “Deadman Switch S2” in the Wiring Diagram). The Operator Presence
Switch
must be actuated before the Go Pedal will drive the machine forward or reverse.
• When the Operator presses the Go Pedal it actuates the Go Switch to drive the machine in the direction
selected with the Forward Drive or Reverse Drive Switches.
Go Switch
Go Pedal
Operator
Presence
Switch
Platform
Operator
Presence
Pedal
Control System
Functional Description
The Control System consists of the A1 Control Board (Main Machine Controller) and the E1 Curtis 1210
Speed Controller.
The A1 Control Board controls the scrubbing and wastewater recovery functions based on Operator requests,
and motion and direction inputs from the E1 Curtis 1210 Speed Controller. The A1 Control Board can store
and display a variety of fault codes to inform the Operator of any machine fault conditions. The A1 Control
Board also supports special modes of operation called the “Programming Mode” and the “Service Test Mode”.
The Programming Mode is used primarily for “telling” the A1 Control Board how the machine is equipped so
that it can operate accordingly. The Service Test Mode allows you to operate various machine components
regardless of current inputs.
The E1 Curtis 1210 Speed Controller controls the drive motor that propels the machine based on Operator
requests. (Refer to the Wheel System, Traction section for more information.)
27Service Manual – SC1500
Component Locations
The following components are included in
this section:
• A1 Control Board
• E1 Curtis 1210 Speed Controller
The A1 Control Board is mounted to the
rear of the Interface Panel Assembly.
The E1 Curtis 1210 Speed Controller is
mounted inside of the Control Panel.
Interface
Panel
Assembly
A1 Control
Board
Control System 28Service Manual – SC1500
E1 Curtis
1210 Speed
Controller
Control
Panel
Troubleshooting
Fault Codes
The graphic display will show any error codes detected by
the A1 Control Board on the Information Screen as they
occur. The display will show the wrench icon and the
two-digit fault code number. The example shown here, 03,
is a speed control fault.
If more than one fault exists, the display will sequence through the fault codes at one-second intervals.
If the error is signicant and results in a machine system shutdown, the graphic display will show the
Information Screen until next key switch cycle. Otherwise the Information Screen will be active only when
the Information Switch is pressed.
Fault Code Table
Control System 29Service Manual – SC1500
Display
Code
03 Speed Control fault
04 Scrub Deck Actuator overload The Scrub Deck Actuator has drawn more than 4.5 amps.
08 Solution Solenoid overload
09
10
11 Detergent Pump overload
21 Detergent Pump driver fault
24 Deck Actuator driver fault
30 Solution Solenoid open
32 Scrub Deck Actuator open
35 Brush Contactor (K2) coil open
36
37 Detergent Pump open
52
62 Solution Solenoid driver on
63
64
65 Detergent Pump driver stuck on
70 On-board Battery charger fault
Fault Description Conditions Needed to Set the Fault Code
The E1 Curtis Speed Controller is communicating a problem
to the A1 Control Board.
The Solution Solenoid Valve has drawn more than
approximately 1 amp.
Vacuum Contactor (SSR1) coil
overload
Brush Contactor (K2) coil
overload
Vacuum Contactor (SSR1) coil
open
Scrub Deck Actuator position
fault
Brush Contactor (K2) driver
stuck on
Vacuum Contactor (SSR1) driver
stuck on
The Vacuum Contactor has drawn more than approximately
1 amp.
The Brush Contactor has drawn more than approximately 1
amp.
The Detergent Pump has drawn more than approximately 1
amp.
The driver IC for the Detergent Pump is reporting a fault;
current limiting or shutdown is in effect due to either a
detected over-current or over-temperature condition.
The driver IC for the Deck Actuator is reporting a fault;
current limiting or shutdown is in effect due to either a
detected over-current or over-temperature condition
The measured current was below the minimum value while
the Solution Solenoid should have been on.
The measured current never exceeded the minimum
threshold while moving from one deck position to another
(only valid when the target position and the starting position
switch states should be different).
The measured current was below the minimum value while
the Brush Contactor should have been on.
The measured current was below the minimum value while
the Vacuum Contactor should have been on.
The measured current was below the minimum value while
the Detergent Pump should have been on.
The measured current was greater than or equal to the
minimum threshold value while the deck was moving, but the
software timed out looking for the new position (never saw
the actuator switch states read the target values).
The measured current was above the minimum value while
the Solution Solenoid driver should have been off.
The measured current was above the minimum value while
the Brush Contactor driver should have been off.
The measured current was above the minimum value while
the Vacuum Contactor driver should have been off.
The measured current was above the minimum value while
the Detergent Pump driver should have been off.
An error has been generated via the serial communications
between the charger and the A1 Control Board due to an
incorrect charging prole code being repeatedly sent by the
charger, or the bit timing being severely out of spec.
System Disabled by Fault Codes
Control System 30Service Manual – SC1500
Disable System Flash Indicator
Motor
Display Code
Fault Description
03 Speed Control fault x
04 Scrub Deck Actuator overload x x x x x
08 Solution Solenoid overload x x x
09 Vacuum Contactor (SSR1) coil
overload
10 Brush Contactor (K2) coil
overload
11 Detergent Pump overload x x
21 Detergent Pump driver fault x x
24 Deck Actuator driver fault x x x x
30 Solution Solenoid open x x x
32 Scrub Deck Actuator open x x x x
35 Brush Contactor (K2) coil
open
36 Vacuum Contactor (SSR1) coil
open
37 Detergent Pump open x x
52 Scrub Deck Actuator position
fault
62 Solution Solenoid stuck closed x
63 Brush Contactor (K2) coil
stuck closed
64 Vacuum Contactor (SSR1) coil
stuck closed
65 Detergent Pump stuck closed x
70 On-board Battery charger fault
Disable Detergent
x x x x x x
x x x x x
x x x x x
x x x x x x
x x x x
x x x x x
Disable Solution
Disable Brush
Disable Recovery
Scrub Deck
Vacuum Motor
Actuator Disable
x
Detergent Indicator
Indicator
Brush Motor
Solution Indicator
Vacuum Indicator
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