Advance by Nilfisk SC450 20D Walk-Behind Scrubber — W105-OBC-PH-SS

Overview

The SC450 20D is a compact, contractor-grade walk-behind auto scrubber designed for daily cleaning in schools, retail, healthcare, and facility services. This configuration pairs a 20″ disc deck with two 105 Ah wet batteries (W105), an onboard charger (OBC), a pad holder (PH), and a splash skirt (SS) for clean, controlled scrubbing and low total cost of ownership.

Features

• 20″ disc deck (20D): Even down-pressure for uniform results; quick-change pad holder included

• Battery package (W105): Two 105 Ah wet batteries for dependable runtime and balanced weight

• Onboard charger (OBC): Plug into any standard outlet—no separate charger to carry

• Splash skirt (SS): Helps contain solution and reduce edge spatter on sensitive finishes

• Operator-friendly: One-touch controls, solution flow dial, clear recovery lid, tool-free squeegee service

• Quiet & productive: Low operating noise suitable for daytime cleaning with high practical productivity

Specifications

• Cleaning path: 20 in (510 mm)

• Squeegee width: ~28 in (710 mm)

• Solution / Recovery tanks: ~10.5 gal / ~11.9 gal

• Brush speed / down pressure: ~150–175 rpm; ~45–65 lb (mode-dependent)

• Theoretical / Practical productivity: up to ~26,000 ft²/hr / ~15,000–18,000 ft²/hr

• Power: 24 V system, W105 wet batteries (2× 105 Ah)

• Charger: Onboard (OBC), 120 V input

• Run time (typical): up to ~3 hrs per charge (settings & floor dependent)

• Sound level: ~63–68 dBA

• Dimensions (L×W×H): ~49″ × 22″ × 42″

• Weight: ~300–330 lb (with batteries & fluids)

Installation (Setup & Use)

1. Uncrate & inspect; fully charge the W105 batteries before first use.

2. Fit the pad holder to the 20″ deck; attach and level the squeegee assembly.

3. Fill solution tank with water and neutral pH detergent (follow label dilution).

4. Power on and set solution flow and down-pressure; choose Eco/Standard as needed.

5. Lower deck & squeegee and begin scrubbing with slight pass overlap; adjust travel speed to soil level.

6. Post-clean: Drain/rinse tanks, clean debris screen and squeegee blades, and connect OBC to recharge.

What’s in the Box

• SC450 20D walk-behind scrubber

• Pad holder (PH) for 20″ deck

• Complete squeegee assembly with hoses

• Battery set: W105 wet (2×105 Ah) installed

• Onboard 120 V charger (OBC)

• Operator’s manual & quick-start card

Important Details

• Use neutral pH detergents; avoid solvents or flammable cleaners.

• Maintain wet batteries: check electrolyte levels and top off per schedule; allow cooldown before charging.

• Rotate/replace pads and squeegee blades to maintain cleaning and pickup quality.

• Productivity, runtime, and noise vary by floor type, soil load, and settings.

Warranty

Machine: 1-year limited (parts & labor) • Poly tanks: 3-year limited • Batteries/charger: 1-year limited (pro-rated). Consumables (pads, blades) excluded. Keep proof of purchase.