5Service Manual – SC900
03 - General Information
General Machine Description
The SC900 machine is a battery-powered, walk-behind, self-propelled commercial oor scrubbing machine
with either a disc or cylindrical scrub system, and suitable for use in hotels, schools, hospitals, factories,
shops, ofces, rental businesses and similar applications. The SC900-28D has a 28" disc deck. The SC900-
34D has a 34" disc deck. The SC900-32C has a 32" cylindrical deck.
The machine is powered by six, 6-volt batteries connected in series, to provide 36 VDC to the motors and
controls.
Service Manual Purpose and Application
This Service Manual is a resource for professional service technicians. It provides information for
understanding how the machine operates, where components are located, basic troubleshooting,
maintenance, and mechanical service operations.
Other Reference Manuals and Information Sources
Document Name Document
Number
Document Type
Instructions for Use 56091183 Operator’s Manual
Parts List 56042634 Parts List
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.
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
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.
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