Keenon C40: troubleshooting and manual
Keenon C40 is a Keenon robot of the “Commercial cleaning robots” type. Its most common problems: Won't return to the dock or doesn't charge; Leaves streaks or water on the floor; Stops and reports an obstacle in open space. Below, for each one: what staff can safely check first and when to call a technician.
Guides specific to this model, such as error codes and procedures from the official manual, are in preparation.
Independent support. Robulance is not affiliated with or endorsed by Keenon.
Common problems
Won't return to the dock or doesn't charge
Usually dirty charging contacts, a moved or blocked dock, or a robot that lost its position on the map.
Read the full guide
Leaves streaks or water on the floor
The squeegee or the recovery side of the robot is not picking the water back up.
Read the full guide
Stops and reports an obstacle in open space
The robot "sees" something that is not there: dirty sensors, reflections or strong sunlight.
Read the full guide
Gets lost or can't find its position
The building no longer matches the robot's map.
Read the full guide
Brush doesn't spin or there is a burning smell
Wrapped hair and string are the usual cause. A burning smell means stop now.
Read the full guide
Specifications
- Dimensions
- 57.8 × 50 × 69 cm[1]
- Weight
- 70 kg[1]
- Runtime
- ≤ 5 h[1]
- Charging time
- 2 h[1]
- Cleaning width
- 40 cm[1]
- Clean water tank
- 16 L[1]
- Recovery tank
- 11 L[1]
- Productivity
- ≤ 1100 m²/h[1]
Features
What this means for troubleshooting
- LiDAR navigation: dust on the LiDAR window and glass or mirrors cause phantom obstacles. Stops and reports an obstacle in open space
- Depth cameras: dirty lenses and strong sunlight cause false stops.
- Rides elevators: if it waits in the lobby, check the elevator and its connection first.
- Returns to its dock by itself: if it does not, check the dock and the contacts. Won't return to the dock or doesn't charge
- Swappable battery: a charged spare keeps it running through long shifts.
- Works with a water station: check the station when tanks are not filled or drained.
- Scrubber: streaks usually mean a worn squeegee or a full recovery tank. Leaves streaks or water on the floor
Compare with similar models
| Model | Keenon C40 | Tennant T7AMR | Tennant T380AMR | Nilfisk Liberty SC50 |
|---|---|---|---|---|
| Dimensions | 57.8 × 50 × 69 cm | — | 157.5 × 63.5 × 139.7 cm | — |
| Weight | 70 kg | — | 385 kg | — |
| Runtime | ≤ 5 h | ≤ 6.5 h | ≤ 5 h | — |
| Charging time | 2 h | — | — | — |
| Cleaning width | 40 cm | 65 cm | 50 cm | — |
| Clean water tank | 16 L | 110 L | 75 L | — |
| Recovery tank | 11 L | 110 L | 75 L | — |
| Productivity | ≤ 1100 m²/h | — | — | — |
| Screen | — | — | — | 15″ |
Each value links to its source: the manufacturer's page or documentation. Checked against sources: October 16, 2026.
Where to find the official manual
The operation guide and service manual come from Keenon. Ask your distributor or check the manufacturer's support pages, and keep the robot's serial number at hand. We do not publish manufacturer manuals; our guides are written independently.
Manufacturer website: keenon.com