Minuteman RoboScrub 20 User manual

RoboScrub 20
Operations Manual

2988767UM REV A • Content Subject to Change
This operator manual is provided with each new model and contains information to allow for quick start-up of your new
Minuteman® RoboScrub 20, powered by BrainOS. This manual may be periodically updated or revised. The RoboScrub 20
can be used in manual mode or in robotic (self-driving/autonomous) mode. Use in robotic mode requires a subscription to
Brain Corp’s Autonomy Services. Follow all provided instructions and warnings. Failure to adhere to directions could result
in damage to the machine and injury to the operator and public.
Brain Operating System (BrainOS) is the name of Brain Corp’s artificial intelligence (AI) and autonomous navigation software
that provides robotic operating capabilities to the RoboScrub 20.
MINUTEMAN® ROBOSCRUB 20 DESCRIPTION
The Minuteman® RoboScrub 20 is a commercial floor scrubber that is powered by BrainOS software. The RoboScrub 20 is
capable of functioning in either manual or robotic mode. When in robotic mode, the RoboScrub 20 is driven by the BrainOS
navigation software. This manual uses the term robotic mode, which is equivalent to autonomous mode.
The RoboScrub 20 may be covered by one or more patents or pending patent applications. See www. braincorporation.
com/patents for details. Discrete portions of this product were made possible by open source software. See www.
braincorp.com/open-source-attributions for details.
INTENDED USE AND PRECAUTIONS
The RoboScrub 20 is a collaborative robot that is intended for supervised commercial use. Use the RoboScrub 20
exclusively on hard floors in an indoor environment. Do not use on soil, grass, artificial turf, or carpeted surfaces. Only use
the RoboScrub 20 with accessories approved by Brain Corp. The RoboScrub 20 should only be used by operators trained
by Brain Corp or Brain Corp-approved trainers in a controlled, restricted environment approved by Brain Corp.
Additional training materials may be provided as to the intended use of the RoboScrub 20, and it should only be used in
accordance with such training. Use the machine in approved environments in accordance with the Autonomy Services
Agreement (ASA) and the Autonomous Navigation Software End User License Agreement (EULA).
The operator is responsible for the use of the RoboScrub 20 in both manual and robotic mode. Therefore, each operator
must be mindful to use the machine in accordance with its intended use, precautions, and warnings at all times. Operators
will not engage in any of the following conduct or activities with respect to Autonomy Services or BrainOS:
a) Transmission of any software or other materials that contain any viruses, worms, trojan horses, defects, spyware,
spiders, screen-scrapers, or other items of a destructive or disruptive nature;
b) Exploitation of the Autonomy Services, BrainOS, or the machine’s hardware in any unauthorized manner, including
trespassing or burdening server or network capacity or infrastructure;
c) Framing, mirroring, or reselling any part of the Autonomy Services or BrainOS without Brain Corp’s prior written
authorization;
d) Unauthorized collection of user information;
e) Attempting to deliberately damage or undermine the legitimate operation of the Autonomy Services or BrainOS;
f) The machine’s onboard cameras may capture images of people who happen to be in its surrounding. There may
be additional jurisdictional laws of operation relating to use of technology with cameras. Please comply with all
applicable laws, including using signage or obtaining consents as required.

3Content Subject to Change • 988767UM REV A

4988767UM REV A • Content Subject to Change
INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
IMPORTANT SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
GENERAL SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
ENVIRONMENTAL SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
OPERATIONAL SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
MAINTENANCE AND SERVICE SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
ROBOSCRUB 20 OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
COMPONENTS OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
SOLUTION FILL PORT AND FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
SOLUTION TANK SITE GAUGE/DRAIN HOSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
WARNING LIGHT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
EMERGENCY STOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
START/PAUSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
BATTERY COMPARTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
RECOVERY TANK DRAIN HOSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
RECOVERY TANK SCREENED FLOAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
OPERATOR SEAT/TANK LID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
ACCELERATOR PEDAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SENSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
CONTROL CONSOLE OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
USER INTERFACE (UI) TOUCH SCREEN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
IGNITION KEY SWITCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
HORN BUTTON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
SOLUTION TANK LOW INDICATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
RECOVERY TANK HIGH INDICATOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
SOLUTION FLOW CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
DIRECTION BUTTONS (FORWARD/BACKWARD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
VACUUM BUTTON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
ONE-TOUCH BUTTON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

5Content Subject to Change • 988767UM REV A
ROBOSCRUB 20 SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
UNPACK ROBOSCRUB 20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
SCRUB BRUSH/PAD OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
INSTALL SCRUB BRUSH/PAD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
UNLOAD SCRUB BRUSH/PAD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
LOAD SCRUB BRUSH/PAD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
SQUEEGEE ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
INSTALL AND ADJUST SQUEEGEE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
INSTALL/REPLACE SQUEEGEE BLADE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
ADJUST SQUEEGEE HEIGHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
BEFORE USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
MANUAL OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
ROBOTIC OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
ROBOTIC MODE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
ESTABLISH HOME MARKERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
REGION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
ROC: ROBOT OPERATIONS CENTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
PAIR A PHONE TO THE ROC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
TEACH A ROBOTIC ROUTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
RUN A ROBOTIC ROUTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
ALERTS DURING OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
EMERGENCY STOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
DELETE A ROUTE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
AFTER USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
AFTER USE DAILY TASKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
DRAIN AND CLEAN TANKS, HOSES, AND FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
CLEAN SCRUB BRUSH/PAD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
CLEAN SQUEEGEE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
CLEAN IN-LINE SOLUTION FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
PARK AND POWER DOWN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
ROBOSCRUB 20 STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

6988767UM REV A • Content Subject to Change
BATTERY CHARGING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
BRAKE RELEASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
MAINTENANCE & SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
DAILY MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
DRAIN AND CLEAN TANKS, HOSES, AND FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
CLEAN SENSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
CLEAN SCRUB BRUSH/PAD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
CLEAN SQUEEGEE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
PARK AND STORE RoboScrub 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
CHARGE BATTERIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
WEEKLY MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
MONTHLY MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
YEARLY MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
PERIODIC MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
TROUBLESHOOTING & SUPPORT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
ROBOSCRUB 20 FAQs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
TROUBLESHOOTING TIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
WHERE TO GET MAINTENANCE AND SUPPORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
WARRANTY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

7Content Subject to Change • 988767UM REV A

8988767UM REV A • Content Subject to Change
GENERAL SAFETY
The Minuteman® RoboScrub 20 is designed solely for scrubbing dirt and dust in a commercial, indoor environment.
Do not use this RoboScrub 20 in any other capacity. The following situations could cause injury to the operator and/or
RoboScrub 20. Read this manual carefully and use caution when these conditions exist.
• Operators must be appropriately trained on the use of the RoboScrub 20.
• Operators must read and understand this manual before operating or maintaining the RoboScrub 20.
• Train all personnel who will be operating the RoboScrub 20. The RoboScrub 20 is not intended for users with reduced
physical, sensory, or mental capabilities, nor by untrained users.
• Report any damage or faulty operation immediately. Do not use the RoboScrub 20 if it is damaged in any way.
• Avoid moving parts.
• Do not allow children to play with the RoboScrub 20.
• Do not use the RoboScrub 20 in a manner other than what is described in this manual.
• Do not clean with a pressure washer.
• Only plug the external charger into an outlet with an appropriate electrical rating: 100 to 240V, 50/60 Hz, 8 A. In
North America, the standard grounded outlet emits 120V, which is in the appropriate electrical rating.
• Do not disconnect the offboard charger’s DC cord from the machine’s receptacle when the charger is operating.
Arcing may result. If battery charging must be interrupted, disconnect the AC power supply cord first.
• Do not pull on the battery charger cord to unplug. Grasp plug at outlet and pull.
• Only use approved batteries and chargers. Use of unapproved parts may impair safety and potentially damage the
machine and/or cause a fire.
ENVIRONMENTAL SAFETY
• The RoboScrub 20 is not designed or intended for use in environments requiring fail-safe performance including,
but not limited to any application in which failure of the RoboScrub 20 could lead directly to death, personal injury,
or severe physical or property damage.
• Do not use on soil, grass, artificial turf, or carpeted surfaces.
• Indoor use only.
• Do not use on public paths or roads.
• The RoboScrub 20 should only be used to scrub flat, hard surfaces with little to no inclines (up to 2% incline when
operating in manual mode; 0% incline when operating in robotic mode).
• All drops, stairs, escalators, moving platforms, or cliffs near the RoboScrub 20 must be guarded by a physical
barrier when operating in robotic mode.
• Do not use temporary elevated platforms (e.g. ladders or scaffolds) near the RoboScrub 20 during operation.
• Do not leave electrical cords or low-profile items (e.g. items with a height of less than 7 inches [18 centimeters]
from the ground) in the RoboScrub 20’s area of operation.
• Place Wet Floor signs in areas where the RoboScrub 20 is operating. See the ASA and EULA for further uses and
restrictions.

9Content Subject to Change • 988767UM REV A
• Operating and storage temperature is 35°F - 100°F (2°C - 38°C).
• Store indoors in a dry environment.
• Use caution when moving the RoboScrub 20 into or out of areas that are below freezing temperatures. Any water
in the tanks or hoses can cause damage to the RoboScrub 20.
• Park and store the RoboScrub 20 on a level surface only.
• Some objects may be difficult for the RoboScrub 20 to detect, such as diffusive black finishes, highly polished/
reflective surfaces, or Plexiglas. Avoid cleaning in robotic mode where these objects are present.
• Avoid using the RoboScrub 20 in proximity to other products that are sensitive to electromagnetic noise.
• Do not use in low traction environments (e.g. ice, oil, etc.).
• Avoid use in environments where stopping could result in a safety risk, such as blocking an emergency exit.
• Avoid use in environments with inconsistent terrain texture (excessively bumpy) or many floor transitions.
OPERATIONAL SAFETY
• Keep hands and feet clear of moving parts while the RoboScrub 20 is in operation.
• Locate and make sure all safety devices (e.g. operator seat sensor, yellow safety straps, and emergency stop
buttons) are in place and fully functional.
• All doors and covers must be positioned as indicated in the instruction manual before using the RoboScrub 20.
• Keep all third parties, especially children and animals, at least 3 feet away from the machine during operation.
• The operator is responsible for supervising and monitoring safe operation of the RoboScrub 20.
• Do not ride the RoboScrub 20 when it is operating in robotic mode.
• Do not grab the steering wheel when operating in robotic mode, as it may move rapidly and unexpectedly.
• All wheels/tires always need to be in contact with the floor. Avoid abrupt maneuvers while using in manual mode.
• Do not use flammable cleaning agents.
• Do not operate the RoboScrub 20 near flammable materials such as solvents, thinners, fuels, grain dust, etc.
Electric motors and components can cause an explosion when operated near explosive materials or vapors.
• The RoboScrub 20 is not suitable for picking up hazardous substances.
• Use appropriate personal protective equipment, as recommended by the cleaning chemical safety data sheet,
when adding cleaning chemicals or draining fluids.
• Observe the legal directives and local regulations for disposal of cleaning chemicals or detergents.
• In case of accidental contact or spillage of cleaning chemicals or detergents, follow guidelines provided by the
manufacturer.
• Only use the brush/pad provided with the RoboScrub 20 or those specified by Brain Corp or Minuteman. Use of
unauthorized brushes/pads may impair safety and potentially damage the RoboScrub 20.
• Do not leave the RoboScrub 20 unattended without first turning the ignition key off and removing the key. When the
RoboScrub 20 is operating in robotic mode, remove the ignition key to prevent unauthorized use.

10 988767UM REV A • Content Subject to Change
• Drain all tanks and hoses prior to storing the RoboScrub 20.
• Prevent unauthorized use of the RoboScrub 20 by storing with the ignition key removed.
• Do not charge batteries when open flames or sparks are present. Do not smoke.
• If the battery charger or power supply cord is damaged, it must be replaced. Do not use damaged parts.
MAINTENANCE AND SERVICE SAFETY
• Repairs and specified maintenance tasks must be performed by authorized personnel only.
• Only use approved replacement parts. Use of unapproved parts may impair safety and potentially damage the
machine.
• Read all instructions before performing any service or maintenance function.
• Take precautions to prevent hair, jewelry, or loose clothing from becoming caught in moving parts.
• Only work on the machine when it is parked on a level surface and appropriately stabilized via safety blocks or
support stands, if necessary.
• Do not lay tools or metal objects on top of the batteries.
• Remove all jewelry, watches, and other conductive materials when working near electrical components.
• Dispose of depleted batteries that can no longer be recharged in accordance with your local environmental
regulations.

11Content Subject to Change • 988767UM REV A
1. Sensors: Side 2D Cameras
2. Sensors: Front 2D Camera
3. Sensors: Front 3D Camera
4. Sensors: Side 3D Cameras
5. Sensors: Lower LIDAR
6. Front Bumper Skirt
7. Front Drive Wheel
1
2
3
4
5
13
12
11
10
9
8
76
8. Scrub Deck
9. Squeegee
10. Accelerator Pedal
11. Solution/Recovery Tank
12. Operator Seat/Recovery Tank Lid
13. Sensors: Upper LIDAR

12 988767UM REV A • Content Subject to Change
14. Recovery Tank Drain Hose
15. Vacuum Motor Muffler
16. Solution Fill Port
17. Warning Light
18. Rear Emergency Stop
19. Start/Pause Button
20. Solution Tank Site Gauge/Drain Hose
21. Battery Compartment
22. Rear Tires
17
18
19
20
21
22
14
15
16

13Content Subject to Change • 988767UM REV A
23
24
25
26
27
28
29
30
31
32
33
23. Ignition Key Switch
24. User Interface (UI) Touch Screen
25. Steering Wheel
26. Front Emergency Stop
27. Horn Button
28. Recovery Tank High Indicator
29. Solution Tank Low Indicator
30. Solution Flow Control
31. One-Touch Button
32. Vacuum Button
33. Direction Buttons (Forward/Backward)

14 988767UM REV A • Content Subject to Change
COMPONENTS OVERVIEW
There are a number of physical components that play a vital role in floor scrubbing, as well as robotic operation.
Familiarize yourself with all components and controls before using the RoboScrub 20.
SOLUTION FILL PORT AND FILTER
The solution fill port is where you pour a premixed solution of an approved
cleaning chemical and clean water. The solution tank can hold up to 18 gallons
(68 liters). Use appropriate personal protective equipment and pour the
premixed solution into the solution fill port. Use the solution tank site gauge to
guide you as you pour. Do not overfill.
SOLUTION TANK SITE GAUGE/DRAIN HOSE
The solution tank site gauge/drain hose serves two purposes: as a visual
indicator of the solution tank volume and is used to drain the solution tank.
Using appropriate personal protective equipment, drain the solution tank by
removing the hose from the clip, removing the cap at the top of the hose, and
lowering the hose to drain.
WARNING LIGHT
The warning light flashes when the RoboScrub 20 is operating in
robotic mode. This serves as an indicator to passersby that the RoboScrub 20 is
currently in operation.
l
o

15Content Subject to Change • 988767UM REV A
EMERGENCY STOP
The RoboScrub 20 is equipped with two emergency stop buttons, one on the rear
and one on the control console. The emergency stop buttons should only be used
in emergency situations, as this potentially releases all fluids onto the floor causing
a slipping hazard. When one of the emergency stop buttons is pressed, all scrubber
functions are immediately stopped and the in-process robotic route is terminated.
START/PAUSE
The RoboScrub 20 is equipped with a blue start/pause button on the back that is
used to begin running a saved route in robotic mode, or to pause an in-process
robotic route. When pressed, the scrub brush raises. The squeegee stays down and
the vacuum remains on for approximately 20 seconds, after which the vacuum turns
off and the squeegee raises. Always use the start/pause button to pause a robotic
route for standard, non-emergency situations.
BATTERY COMPARTMENT
The battery compartment houses the batteries, battery connections, and the onboard
charger. See UNPACK ROBOSCRUB 20 and BATTERY CHARGING for details.
T
h
an
i
STOP
fu
USE

16 988767UM REV A • Content Subject to Change
RECOVERY TANK DRAIN HOSE
The recovery tank drain hose is used to drain the recovery tank. Use appropriate personal
protective equipment to drain the recovery tank by removing the hose from the clip, removing
the cap at the top of the hose, and lowering the hose to drain.
RECOVERY TANK SCREENED FLOAT
Inside the recovery tank is a screened float. When the recovery tank is overfilled or a large
amount of foaming is present, the screened float blocks the vacuum intake inside the tank
protecting the vacuum motor and internal electronics from water damage. It is essential to
keep the screened float clean and functioning properly.
OPERATOR SEAT/TANK LID
The operator seat is equipped with two sensors: a pressure switch under the seat cushion to prevent joyriding during
robotic operation, and two contact switches located on the back of the seat and the body of the RoboScrub 20. It also
serves as the recovery tank lid.

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ACCELERATOR PEDAL
Pressing the accelerator pedal moves the RoboScrub 20 forward or
backwards, depending on which direction switch is selected on the control
console. The amount of pressure placed on the accelerator pedal controls
the speed. When pressure is completely removed, the electromagnetic
brake automatically engages, stopping the RoboScrub 20.
SENSORS
The RoboScrub 20 is equipped with LIDAR, 3D and 2D cameras, all of which allow
machine visions for the robotic software. All sensors and cameras constantly
surveille the robot’s surroundings for both stationary and moving obstacles.
When an obstacle is detected, the RoboScrub 20 will attempt to navigate around
it and continue on its robotic map.

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CONTROL CONSOLE OVERVIEW
The Minuteman® RoboScrub 20, powered by BrainOS, was designed with total operator ease of use in mind. All controls
and components have been designed as a total system to efficiently clean dirty floors. The control console consists of
the User Interface (UI) Touch Screen, also referred to as the UI or touch screen, and a number of manual controls.
Before using the RoboScrub 20, familiarize yourself with all components and controls.
USER INTERFACE (UI) TOUCH SCREEN
The RoboScrub 20 is equipped with BrainOS software that is accessible via the User Interface
(UI) Touch Screen, located on the left side of the control console. BrainOS technology offers a
robotic mode feature that provides the ability for the RoboScrub 20 to perform floor cleaning by
following one of the saved navigation routes without direct, real-time operator control. When the
Minuteman® RoboScrub 20 is turned on, the BrainOS software will automatically initialize (as
shown to the right).
Once the BrainOS software has initialized, it is ready for use. The top of the touch screen
displays the current time, battery life, and ROC connection status. In addition, the touch
screen allows an operator to run an existing cleaning route robotically, teach a new cleaning
route, and access to a variety of settings. See ROBOTIC OPERATION for details.

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IGNITION KEY SWITCH
Just below the steering wheel is the ignition key switch. The ignition
key switch turns the RoboScrub 20 on and off. Turn the key to the right
(clockwise) to turn on the RoboScrub 20. Turn the key to the left (counter-
clockwise) to turn it off. In addition, the ignition key is used to unload the
scrub brush when the key is turned to the left (counter-clockwise), past the
off position. See UNLOAD SCRUB BRUSH/PAD for details.
HORN BUTTON
Pressing this button sounds the RoboScrub 20’s horn.
SOLUTION TANK LOW INDICATOR
When illuminated, indicates that the solution tank is low and needs to be refilled.
RECOVERY TANK HIGH INDICATOR
When illuminated, indicates that the recovery tank level is high and needs to be emptied.
SOLUTION FLOW CONTROL
The solution flow control regulates the amount of solution that is discharged
during cleaning. This control returns to default factory settings (lowest
setting) every time the RoboScrub 20 is turned on, as cleaning needs may
change from day-to-day. Before using, manually adjust the solution flow
control to the desired setting for optimum cleaning performance.

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DIRECTION BUTTONS (FORWARD/BACKWARD)
The direction buttons control whether the RoboScrub 20 drives forward or backward when the
accelerator pedal is pressed. The upward arrow instructs the RoboScrub 20 to drive forward.
The downward arrow instructs it to drive backward. When driving backward, the squeegee will
automatically raise to prevent damage. Be sure to inspect the floor for any residual water after
driving backward.
VACUUM BUTTON
Pressing the vacuum button turns the vacuum on. When the vacuum is turned on, the squeegee
automatically lowers when driving forward. When the vacuum is turned off, the squeegee
will stay down for approximately 8 seconds and then raise. The vacuum motor will run for
approximately 15 seconds and then turn off.
ONE-TOUCH BUTTON
The one-touch button engages the scrub brush, vacuum, and squeegee, allowing for
immediate operation of the RoboScrub 20. When pressed, the scrub brush and squeegee are
lowered, and the vacuum turns on. When scrubbing is complete, press the one-touch button
again to disengage cleaning operations. The scrub brush will rise off the floor. The squeegee
will remain down for a few seconds and then rise as well. After the squeegee has risen, the
vacuum will remain on for a few additional seconds to clear any remaining water in the hose
and then turn off.