1. Introduction
This manual provides essential instructions for the safe and efficient operation, maintenance, and troubleshooting of your Advance SC750 28C Cordless Walk Behind Cylindrical Floor Scrubber. Please read this manual thoroughly before operating the machine to ensure proper usage and to prevent damage or injury.
The Advance SC750 28C 56112374 is a high-performance, battery-powered walk-behind floor scrubber designed for large commercial and industrial spaces. It features a 28-inch cylindrical scrub deck and is powered by four 6V 310 Ah wet batteries, delivering up to 84 minutes of continuous operation. The unit includes a 21-gallon solution tank and a 21-gallon recovery tank, ensuring extended cleaning sessions with minimal interruptions. Its onboard charger adds convenience, allowing for easy recharging between uses.
Figure 1: Advance SC750 28C Floor Scrubber
2. Safety Information
Always prioritize safety when operating and maintaining the floor scrubber. Failure to follow safety guidelines can result in serious injury or damage to the equipment.
- Read and understand all instructions before operating the machine.
- Wear appropriate personal protective equipment (PPE), including safety glasses and non-slip footwear.
- Ensure the machine is turned off and disconnected from power before performing any maintenance or adjustments.
- Do not operate the machine on inclines exceeding the manufacturer's recommendations.
- Keep hands, feet, and loose clothing away from moving parts.
- Use only approved cleaning solutions and defoamers.
- Store the machine in a dry, secure location when not in use.
3. Setup
3.1 Unpacking and Initial Inspection
Carefully remove the floor scrubber from its packaging. Inspect the machine for any signs of damage that may have occurred during shipping. Ensure all components listed in the packing list are present.
3.2 Battery Installation and Connection
Access the battery compartment, typically located under the recovery tank. Place the four 6V 310 Ah wet batteries into their designated positions. Connect the battery cables, ensuring correct polarity (positive to positive, negative to negative). Tighten all connections securely and place insulating sheaths over the terminals if provided.
3.3 Squeegee Assembly
Attach the squeegee assembly to the rear of the machine. Ensure the flat gasket is installed correctly, positioned above the bracket. Connect the dust pick-up hose from the machine to the squeegee. Adjust the support wheels and the squeegee angle adjusting knob to ensure the squeegee strips are parallel to the ground and slightly curved for optimal water pick-up.
3.4 Brush or Pad Installation
Position the brush tray or scouring pad directly under the brush shroud. Lower the brush guard by releasing the foot pedal and gently shaking the machine to allow the brush or pad to automatically load and secure into place.
3.5 Initial Charging
Before first use, fully charge the machine's batteries. Connect the power cord to the onboard charger and plug it into a suitable power outlet. The red light on the charger indicates charging, and a green light indicates a full charge. Ensure the charger is properly connected and the machine is turned off during charging.
4. Operating Instructions
4.1 Preparing for Operation
- Add Detergent: Remove the measuring cup and add the appropriate amount of recommended detergent to the solution tank.
- Add Defoamer: Fill the sewage tank with an appropriate amount of defoamer. Direct use without defoamer can cause damage to the vacuum motor.
- Fill Fresh Water Tank: Fill the fresh water tank with the appropriate amount of clean water.
4.2 Starting the Machine
Turn on the machine using the key switch. Depress the foot pedal to drop the squeegee and release the brush guard. Press the switches for suction, brush tray, and fresh water to activate the cleaning functions. The machine is now ready for operation.
4.3 Cleaning Procedure
Walk behind the machine, guiding it across the floor surface to be cleaned. Maintain a consistent speed for optimal cleaning results. The machine will dispense cleaning solution, scrub the floor, and then vacuum up the dirty water, leaving the floor clean and dry.
5. Maintenance
Regular maintenance ensures the longevity and optimal performance of your Advance SC750 28C floor scrubber.
5.1 After Each Use
- Drain Sewage: Remove the drainpipe and completely drain the sewage from the recovery tank.
- Clean Tanks: Clean up any dirt or debris from the sewage tanks in a timely manner to prevent odors and blockages.
- Clean Squeegee: Remove and clean the squeegee assembly, checking for any foreign matter that may clog the suction port.
- Check Filter Cotton: Check if the filter cotton in the recovery tank is clogged with foreign matter. Heavy clogging can affect the effectiveness of suctioning. Clean or replace as needed.
5.2 Regular Checks
- Water Inlet Filter: Close the water inlet valve and remove the cartridge of the filter. Check the filter for foreign matter and clean it in time to ensure proper water flow.
- Brush/Pad Condition: Regularly inspect the brush or pad for wear and tear. Replace when bristles are worn or the pad is no longer effective.
- Battery Care: Follow the battery manufacturer's guidelines for wet battery maintenance, including checking electrolyte levels and ensuring terminals are clean and free of corrosion.
6. Troubleshooting
This section provides solutions to common issues you may encounter. For problems not listed here or if solutions do not resolve the issue, contact qualified service personnel.
| Problem | Possible Cause | Solution |
|---|---|---|
| Machine does not start | Low battery charge; Loose battery connections; Key switch off | Charge batteries; Check and tighten battery cables; Turn key switch on |
| Poor water pick-up | Clogged squeegee; Worn squeegee blades; Recovery tank full; Vacuum hose disconnected | Clean squeegee and suction port; Replace squeegee blades; Empty recovery tank; Reconnect vacuum hose |
| Insufficient scrubbing performance | Worn brush/pad; Incorrect brush/pad type; Insufficient detergent | Replace brush/pad; Ensure correct brush/pad for floor type; Add more detergent |
| No water dispensing | Empty solution tank; Clogged water filter; Solution valve closed | Fill solution tank; Clean water inlet filter; Open solution valve |
7. Specifications
- Model Name: SC750 28C
- Item Model Number: #9060407010
- Manufacturer: Nilfisk-ADVANCE
- Scrub Deck Width: 28 inches (Cylindrical)
- Battery Type: Four 6V 310 Ah Wet Batteries
- Voltage: 24V (implied from 4x6V batteries)
- Solution Tank Capacity: 21 Gallons
- Recovery Tank Capacity: 21 Gallons
- Brush Speed: 840 RPM
- Cleaning Rate: Up to 41,900 sq. ft. per hour
- Noise Level: 61 dB(A)
- Item Weight: 10 Pounds (Note: This weight seems unusually low for a floor scrubber of this size and battery capacity. Please verify with manufacturer if actual weight is critical.)
- Product Dimensions: 10"L x 10"W x 10"H (Note: These dimensions seem unusually small for a 28" scrubber. Please verify with manufacturer if actual dimensions are critical.)
- Special Feature: Wheels
- Color: Gray
- Power Source: Corded Electric (Note: This contradicts 'Cordless' in the title and 'battery-powered' in description. The machine is battery-powered with an onboard charger, which uses a cord for charging. The primary operation is cordless.)
8. Warranty and Support
For detailed warranty information, technical support, or to order replacement parts, please contact the manufacturer, Nilfisk-ADVANCE, or your authorized dealer. Keep your purchase receipt and model number readily available when contacting support.
