Is Your Building Robot-Ready? Robotic Floor Scrubber Requirements Checklist (+ Free Printable)

Rod Michelini is the founder of OneUp Cleaning. We sell the ICE Cobi 18 and operator-driven scrubbers, but this checklist is built from the manuals and spec sheets of nine robot makers, so it applies to whichever robot you're considering.

Robotic floor scrubber requirements come down to six things: smooth indoor hard floors, ramps within the robot's autonomous grade, aisles wider than the maker's minimum, a floor cleared before each run, a place to charge, fill and drain it (or plumbing for a docking station), and the network signal the robot reports through.

If that's all you needed, grab the free printable checklist and walk your facility with it. If you're about to sign a purchase order, keep reading, because these details are where deployments actually fail.

What are the requirements for a robotic floor scrubber?

These robotic floor scrubber requirements cover the floor, clearance, obstacles, the charging and docking area, connectivity and staffing. Use this table as your walk-through:

Want this table on paper for your walk-through? Get the free printable checklist: one page, 32 tick boxes with pass marks you can check with a tape measure and your phone.

Are your floors smooth, level and indoors?

They have to be, because every maker whose documents we checked builds these robots for indoor hard floors only. Avidbots says its Neo should not be used in carpeted areas, and Kärcher's KIRA B 50 is meant for indoor use, in dry areas, between 5 and 40°C.

Low edges are the hidden problem. Tennant's deployment guide says its robots can't detect objects lower than 4 inches and may read a raised section as a wall or a dip as a cliff.

Pudu keeps bumps under 8 mm while its CC1 is cleaning. Walk your facility's route and note every step, threshold and change in floor type, because each one becomes a no-go area or a spot your staff handle by hand. The free printable checklist gives you a line to tick for each of them.

What about ramps?

Treat every ramp on your route as manual-mode territory until your spec sheet says otherwise. AI answers sometimes repeat 6 to 8 degrees, but the makers' own limits for scrubbing on their own are lower, and they vary widely.

Avidbots rates the Neo 2 at a 0.5 percent maximum scrubbing grade, about a quarter of a degree, and Tennant's guide says its robots cannot navigate up and down slopes on autonomous routes at all.

At the other end, Gausium lists 4.6 degrees for the Scrubber 50. Pudu allows 3 degrees while cleaning but 8 degrees when the CC1 is only driving, so read the figure for scrubbing, not travel.

Is there room for the robot to pass and turn?

Measure the narrowest point in your facility, plus every dead end, rather than the typical aisle or corridor, because makers list two widths: one your robot needs to pass through and a larger one it needs to turn around.

The spread between makers is wide, because Gausium's Phantas needs 650 mm, about 25.6 inches, to pass, while its larger Scrubber 75 needs 1,400 mm, about 55 inches. Tennant lists 3.5 feet to pass, 4.5 feet to turn in and 7.5 feet for a U-turn on its T380AMR, and Avidbots needs 120 inches to turn the Neo 2 around.

If a doorway looks tight, Tennant's advice is to drive the machine through the area first before teaching any route. Note both widths on your printable checklist next to the robot you're considering.

Will the floor be clear when the robot runs?

It has to be, because a robotic floor scrubber avoids obstacles rather than moving them, so schedule runs for when foot traffic is lowest. Tennant tells buyers your staff will need to move floor mats, signage and carts before each run, and reteach routes when furniture changes. Four custodians describe the same thing in practice: when a display or a stack of freight changes the layout, the robot can get lost, stop and wait for someone.

Four more habits keep your cleaning robot on its cleaning schedule:

• Sweep first. One custodian found that small debris such as a stray nut, bolt or paperclip would shut a robot down, so dust mop the route before it runs.
• Stack chairs and tables. School custodians clear hallway furniture first, because obstacle sensors don't always pick up spindly chair and table legs.
• Plan edge labor. Robots keep a gap from walls and shelving, so their coverage stops short and someone still mops the edges on your shift.
• Wipe the sensors. Every robot steers by cameras and laser scanners, so make a quick sensor check part of your daily maintenance routine, since its navigation depends on them.

Where will it charge, fill and drain?

That depends on whether your robot docks itself or needs your staff to service it. A robot without a dock needs a person to fill the solution tank, empty the recovery tank and plug in the charger, so end its route near your tap, your drain and a charging outlet. Tennant advises that if your robot needs more than one dump and fill, you should end the route near a custodial closet.

A self-docking robot does that work for you. Kärcher's optional station for the KIRA B 50 fills fresh water, empties and rinses the dirty tank and charges the batteries, and it mounts near a water line, an outlet and a ground-level drain. Gausium and Pudu list the same three needs for their stations: a water source, a floor drain and a power supply.

Before you buy a self-docking robotic scrubber, get its hookup sheet to your plumber and electrician:

• Water pressure. Gausium's station takes 0.15 to 0.6 MPa, about 22 to 87 psi, and Kärcher adds a pressure reducer when the supply runs high.
• A low drain. Pudu wants the sewage outlet no more than 0.5 m above the floor, about 20 inches, so a high sink won't do.
• Room to dock. Plan about 6.5 feet of clearance in front of the station, and keep it out of escape routes and away from firefighting equipment.
• Backflow protection. Plumbing code requires potable water systems to be protected from contamination through cross connections, so ask your plumber which device your local code calls for.

No plumbing near the route? Pudu and Gausium sell mobile water tanks the robot fills from and drains into, but someone still empties them by hand. For any robot, use the supplied charger, give flooded batteries ventilation while charging, keep chargers listed by a Nationally Recognized Testing Laboratory, and store your machine indoors where it won't freeze.

Does a robotic floor scrubber need Wi-Fi?

Often not, but it usually needs a mobile signal, and this is the requirement buyers most often get wrong. Tennant's robots run on BrainOS and are approved only for areas with adequate cell coverage for cellular data, and Brain Corp says its machines need no Wi-Fi and only use an LTE signal to upload reporting data. Pudu's CC1, by contrast, supports 4G, Wi-Fi and Bluetooth, and Nilfisk's robot uses either a cellular network or WiFi.

So ask which network your model reports through, then walk the route with a phone and watch the bars in your back rooms, basements and aisles lined with steel racking, where coverage usually drops. Mark each dead spot on your checklist as you go.

Can the robot find its way around your building?

Yes, once you teach it: you drive the route once, and the robot repeats that navigation at the push of a button, often from a marker on the wall. Tennant mounts its home marker 40 inches up on a flat wall in a well-lit spot away from shiny surfaces, and Nilfisk puts its Liberty tag about 3 feet up on a flat wall, not a pillar.

Your markers have to stay put, since one school custodian found their barcode-guided robot failed when someone moved a marker by an inch.

Large empty rooms cause trouble too. Two custodians describe the same problem in gyms: one robot stopped cleaning a gym that was too big for the robot to know where it was, and another's tracker showed it fifty feet from where it actually was. Tennant suggests a safety cone in the middle of a gym to help the machine orient itself.

Glass, mirrors and black surfaces need testing during mapping as well. Pudu warns that pure black, mirrored or transparent surfaces 14 to 22 cm off the floor can confuse its laser scanner and may need stickers, and Tennant's guide tells you to stay 1 to 2 feet from glass while teaching a route.

Can a robotic scrubber ride an elevator?

Some can, but only when both the robot and your elevator support it, and Tennant's manuals say robotic routes should never include elevators or automatic doors. Our guide to robot elevator integration covers which elevators and cleaning robots work together and who to call first.

Who answers the robot when it stops?

Someone on every shift, because a robotic scrubber that stops simply waits for you. Store workers describe rescuing robots when they call for help, so name the person who gets the alert and make sure they can reach the robot quickly.

Picture your robot scrubbing the east corridor at midnight, when traffic is lowest, while your staff work the restrooms. It meets a pallet jack someone left out, stops and sends an alert. If nobody checks the phone, the hallway is still dirty at 6 a.m., but if your lead moves the jack and restarts the route, the floor is done before opening.

Plan for safety around the public too. In schools and stores, custodians report people deliberately pressing the robot's emergency stop, so Tennant recommends a risk assessment, a written procedure and password-protected screens before deployment.

Put out cleaning-in-progress signs, and since onboard cameras can capture images of people, check whether your site needs privacy signage. If you clean overnight, tell your security company, since two school custodians report robots setting off building alarms.

Where should a robotic scrubber never go?

Keep your robot out of these places on every route, whatever the brand:

• Edges. Stairs, escalators, loading dock ends and any drop. Tennant's manuals ask you to guard them with a physical barrier, not just a line on the map.
• Outdoor, wet or frozen floors. That includes cold stores and floors slippery enough to make a person slide, which Kärcher's manual lists among the places its robot must not clean.
• Hazardous air. Areas with flammable vapors, combustible dust or explosive atmospheres, which Tennant and Kärcher both prohibit in their operating instructions.
• Dark areas. Spots too dark for your operator to see the machine's controls safely, which Tennant's manuals also rule out.
• Places where a failure could hurt someone. If a stalled or misrouted robot could cause an injury or damage in your building, clean that area with a person.

Don't trust lines drawn in the software alone. Most robots let you mark no-go zones during deployment, but one custodian saw their robotic vacuums roll outdoors through wide sliding glass doors despite a hard wall on the map.

When is your building not ready for a robot?

Does your layout change every night, or is your route short? Then a robotic scrubber will struggle, however good its navigation sensors are.

Tennant's rule of thumb is that robots suit wide open spaces cleaned at least three hours a day, five days a week. Classrooms reset daily, ramps between every zone and displays that move nightly all fail that test.

In that kind of facility, an operator on a compact floor scrubber will clean faster and reach the corners a robot leaves behind. If your facility passes, the robotic floor scrubber cost guide walks you through the payback math.

Frequently asked questions

Do you need a license to operate a floor scrubber?

No federal license is required. OSHA has stated that sweeper and scrubber equipment is not classified as a powered industrial truck, so forklift certification rules don't apply. Your employer or state may still require training, so check with your safety officer, or call us before you buy.

How long does it take to set up a robotic floor scrubber?

Deployment usually takes a few hours to a few days for one robotic floor scrubber, since Brain Corp says its robots deploy within a few hours or days. A docking station that needs a water line and drain adds plumbing time, so ask your vendor how long mapping takes in your facility and how it fits your cleaning schedule.

How much does a robotic floor scrubber cost?

From under $9,000 to over $110,000. Our robotic floor scrubber cost guide breaks down the price and the payback.

Send us your walk-through

Fill in your printable checklist, then send your floor plan, narrowest aisle, ramps and signal through the contact page, or call (855) 601-5678. You'll get a straight answer on whether a robot fits your building, whether that's a compact model like the Cobi 18 or something larger, or whether an operator-driven machine suits you better. Unused machines are covered by the 30-day return policy, and you can compare models in our autonomous floor scrubbers collection.

Related reading: Robotic floor scrubber cost and ROI · Robotic vs ride-on floor scrubber · What are the different types of floor scrubbers? · How to buy a floor scrubber · Floor scrubber maintenance