Numatic CRO 8055 User manual

Warning! Read instructions before using the machine
Owner Instructions
CRO 8055/8072
RIDE-ON SCRUBBER DRYER
www.numatic.co.uk
CRO 8055
CRO 8072

Machine Overview ................................ Pages 2-3
Control Panel Overview ................................ Page 4
Machine Set up Guide ................................ Page 5
Hose U Bend Clip ................................ Page 6
Fitting the Floor tool ................................ Page 6
Breakaway Floor tool Feature ......................... Page 6
Raise / Lower Brush Deck............................... Page 7
Fitting the brush ................................ Page 7
Floor tool Transit Bracket ................................ Page 7
Filling the Clean Water Tank .......................... Page 8
Fill Level Indicator .............................. Page 8
Setting the Cleaning Controls .................... Page 9
Waste Water Tank Full ................................ Page 9
Brush Pressure .............................. Page 10
Emergency Stop Button and Horn.................. Page 10
Maximum Speed Control ................................ Page 10
Anti-tip System ................................ Page 10
Machine in Use ................................ Page 11
O-aisle Cleaning Kit ................................ Page 11
Machine Cleaning ................................ Pages 12-13
Free-Wheel Function ................................ Page 13
Changing Floor tool Blades............................. Page 14
Machine Charging ................................ Page 15
Battery Care ................................ Page 16
Charging Lights Sequence .............................. Pages 16-17
Trouble Shooting ................................ Pages 18-19
Specications ................................ Page 18
Rating Label / Personal Protective Equipment /
Recycling ................................ Page 20
Safety Precautions ................................ Page 21
Recommended Spare Parts .......................... Page 22
Schematic Diagram ................................ Page 22
EU Declaration Document ............................. Page 23
Warranty ................................ Page 23
Company Address ................................ Page 24
RIDE ON SCRUBBER DRYER
Index
After the removal of
all the packaging,
carefully open and
check the contents
● Owner Manual
● Battery Charging Lead
● Isolator Key
● 40 Amp Fuse
● Maxi Fuse-puller
PLEASE
READ
BEFORE
COMMENCING
OPERATION
1Operator control panel
2Brush deck foot pedal
3Anti-tip buers
4Floor-tool raise / lower lever
5Clean water tank ll point
6Brush deck
740 Amp battery fuse
8Gel batteries
9Clean water tank lter
10 On-board charger and charge indicator
11 Accelerator pedal
12 Pedestrian warning light
13 Floor-tool transit bracket
14 Air separator assembly
15 Waste water emptying hose
16 Vacuum hose
17 Clean water tank emptying hose
18 Floor-tool
CRO 8055/8072

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Machine Overview

CRO 8055/8072
RIDE ON SCRUBBER DRYER
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6
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8
2
1Water Flow Rate Indicator and Selection Button 8On / O Switch
2Brush Engage and Disengage Button 9Forward / Reverse Switch
3Service Indicator 10 LED Status Indicator
4Brush Pressure / Load Indicator 11 Maximum Speed Control
5Run Time Selection Button 12 Horn Button
6Battery Charge Level Indicator 13 Emergency Stop Button
7O Aisle Vacuum Button
Control Panel Overview
In the event of a breakdown contact
your Numatic dealer or the
Numatic Technical
help line [phone]

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“ Ensure that no metal objects
come into contact with
battery terminals while the
batteries are exposed.
ALWAYS WEAR GLOVES.
When inserting the rst
fuse you may notice
a spark, this is normal. ”
Use handle grip when
raising or lowering the
top waste-tank.
Machine Set-up Guide
CONTENTS
1 x Owner Manual
2 x Battery Charging Lead
2 x Keys
1 x 40 Amp Fuse (1 spare)
1 x Maxi Fuse-puller
Lift top tank assembly to reveal
battery compartment.
Always lift using handle grips as shown.
Remove transit block from pallet.
NOTE: DO NOT depress accelerator pedal while software initialises.
The seat is tted with a pressure sensor that disables the machine until an operator is seated.
PLEASE READ BEFORE COMMENCING ANY OPERATION AFTER THE REMOVAL OF ALL
THE PACKAGING, CAREFULLY OPEN AND CHECK THE CONTENTS. !!
Fit the battery fuse. Switch on the machine.
Set lever to forward. Set to slowest speed, depress accelerator and
drive o the palette using ramp provided.
Once in a safe location switch o machine.

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The U-bend in the hose prevents water spillage when the vacuum is switched o.
Ret vacuum hose to the oor tool when nished.
Hose U-bend Clip
NOTE: DO NOT push the vacuum hose
onto the oor tool with the oor tool in
the raised position.
Machine Set-up Guide
The oor tool design incorporates a safety knock-o feature, this allows it to safely
disengage from its mounting should it become caught on an obstruction during
forward movement.
Make sure you do not over tighten the retaining knobs.
Break-away Floor Tool
Fitting the Floor Tool
NOTE: Raise oor tool before driving to the cleaning area.
The machine will not operate in reverse with the oor tool lowered.
Lower the oor tool.
Slide oor tool onto bracket. Tighten retaining knobs to nger tight
and attach hose.
Raise the oor tool.

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Please follow the same process to t both brushes to the CRO 8072 as is for the
single brush tting on the CRO 8055.
To disengage the brush, press the brush engage button with the brush deck in the
raised position.
NOTE: Do not lift the brush deck until the brush has stopped revolving or the
brush will release.
Make sure you raise the brush deck before driving to the cleaning site.
Safety Gloves are recommended for the changing of used brushes.
When in transit, the oor tool can be placed on the bracket at the rear of the machine.
Simply slot the retaining knob into the bracket.
Machine Set-up Guide
Always ensure that the machine is switched o before making any adjustments. !!
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11
12
Raise Brush Deck / Fitting the Brush / Lower Brush Deck
Floor Tool Transit Bracket
Raise brush deck. Brush deck raised position. Slide brush under machine.
Brush in place. Lower brush deck. Brush deck lowered.
Press brush engage button.
Switch machine on. Machine has picked up the brush.
CRO 8072
Twin Brush

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NOTE: Great care must be taken to ensure that contaminants (leaves, hair, dirt, etc.) are not allowed to enter the clean water
tank during the lling process. If using a bucket or similar, ensure it is always clean and free from debris.
When lling the clean water tank, do not ll
above the clean water tank emptying hose
retaining clip.
This can be found at the rear of
the machine.
Machine Set-up Guide
Always ensure that the machine is switched o before making any adjustments. !!
The CRO 8055/8072 is equipped with a large capacity 80 litre clean water tank, allowing for large areas to be covered in a single ll.
Filling the Clean Water Tank
10
Fill Level Indicator
If you need to access the batteries, make sure that the
waste water tank is empty before lifting. !!
To ll clean water tank extend ll hose. Remove rubber seal and ll. Alternatively remove ller cap completely.

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Drive the machine to the cleaning site (read set-up guide again if necessary - page 5).
Before cleaning operation, place out appropriate warning signs and sweep or dust-mop the oor.
When ready for cleaning lower the oor tool (page 6) and the brush deck (page 7).
The vac shut o system stops the airow when the top waste water tank is full.
The vac motor will continue to run, there is an audible dierence in the sound when the shut o system operates.
For more details on checking and cleaning the shut o system see page 13.
Machine Operation
IMPORTANT
Do not operate machine unless the operator manual has been read and fully understood. !!
Setting the Cleaning Controls
= No Flow
= 0.5 L/min
= 1.0 L/min
= 1.5 L/min
= 2.0 L/min
= 3.0 L/min
Waste Water Tank Full
Always ensure that the oor is pre-swept and relevant safety signs are displayed. !!
Open Closed
Switch machine on. Battery charge-level indicator illuminates. Set the water ow rate as required.

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NOTE: The run-time of the machine may decrease if the load on the brushes is increased.
The CRO 8055/8072 is equipped with an
Anti-tip system.
The machine automatically slows down
preventing the machine from tipping over if
cornering at speed.
The buers at the front are designed to
prevent the machine tipping in the event of
the operator turning sharply.
The buers are designed to be replaceable
when worn.
Machine Operation
Brush Pressure / Emergency Stop Button / Horn
The CRO 8055/8072 is equipped with an electronic braking system.
To reset, turn emergency stop button clockwise, to restart the machine turn the key o then on again.
Anti-tip System
Set desired traction speed as required, depending on oor type and level of soiling.
Once the Max speed has been set using the control knob on the control panel,
ne adjustments can be made using the variable control speed pedal located on the
right side of the footplate.
Maximum Speed Control
Care must be taken to reduce speed when cornering or manoeuvring. !!
Brush pressure load warning lights.
(Illuminates from left to right)
In an emergency, strike the emergency stop
to disable the machine.
Horn button.
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To operate, select forward and depress the accelerator pedal.
Vacuum pick-up and water ow will turn on if selected, and providing the brush and oor
tool are in the lowered position, the machine will move forward.
Clean water is dispersed evenly via ‘THRU- FEED’ scrubbing brushes.
The waste water is then retrieved by the suction oor tool.
Overlap each scrubbing path by 10cm to ensure an even clean.
After stopping, the vac motor will run for a further 10 seconds to collect any water left in
the vacuum hose.
On heavily soiled oors use a ‘double scrub’ technique.
First pre-scrub the oor with the oor tool in the raised position, allow the chemicals time
to work, then scrub the area a second time with the oor tool lowered.
If your machine leaves streaks on the cleaned oor, either clean the oor tool blade or
adjust blade height for optimum performance.
Machine Operation
Machine in Use
Do not operate the machine on inclines that exceed 11%. !!
The optional o-aisle cleaning kit gives added exibility to the operator.
The kit can be used to clean hard to reach / inaccessible areas.
Remove the vacuum hose from the oor tool and attach to the o-aisle kit.
To operate the vacuum, press the o-aisle vacuum button on the control panel.
Pressing the o-aisle button again will switch the vacuum o.
NOTE: Return the hose to the oor tool once nished using the o-aisle facility.
Off-aisle Cleaning Kit (Optional Extra Accessory) 606182
Adjusting the blade height.
Set lever to forward.
Water ow rate selection.
Brush deck in lowered position. Floor tool lever in lowered position.
O-aisle vacuum button.

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After use, empty waste water tank using emptying hose and ush-out with
clean water.
Remove oor tool vacuum hose ensuring you remove the U-bend clip and ush out
with clean water.
Empty clean water tank, using emptying hose and again ush out with clean water.
NOTE: The separator can be hung from either side of the top tank while you maintain the machine using the clip on the
front of the lid.
A
B
C
When retting the separator make sure you engage the front of the separator BEFORE pushing the separator down.
Ret the vacuum hose.
Machine Cleaning
Always ensure that the machine is switched o prior to any maintenance. !!
A
B
C
Remove hose. Remove separator and clean. Clean and examine rubber seal during
each clean.

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Located in your waste water top tank is a vacuum shut o system, this prevents suction when the waste water tank is full. It also
prevents foam created by high-foaming detergents from entering the motor. Sometimes the oat vents get clogged and blocked,
clean to ensure correct operation. Regularly check and clean the air lter in the top of the assembly. Remove debris basket lter and
rinse using clean water, and ret.
IMPORTANT: If the debris basket is allowed to become clogged, vacuum performance can deteriorate.
The clean water tank lter is located to the front of the battery compartment, and should be checked at regular intervals.
Lift the lter o of the cradle, unscrew the bottom and remove, taking care not to spill any liquid on to the batteries.
Rinse using clean water and ret, retting is reversal of removal.
NOTE: Any Spills should be wiped up before tank is lowered.
Machine Cleaning
Always ensure that the machine is switched o prior to any maintenance. !!
Free Wheel Function
The CRO 8055/8072 is equipped with a free wheel function that will enable the operator
to move the machine.
The free wheel lever can be found on the right hand side of the rear axle.
To disengage the brake, pull the lever into the down position.
Re-engage the brake by moving the lever into the up position.
NOTE: When the brake is disengaged the machine has no braking facility.
Care must be taken when moving the machine in free wheel mode.
ALWAYS ENSURE THAT THE MACHINE IS ON LEVEL GROUND
BEFORE DISENGAGING BRAKE ARM.
NEVER DISENGAGE THE BRAKE WHEN THE MACHINE IS ON A SLOPE / GRADIENT. !!
Debris basket removal.Float vent. Air lter.
Machine shown on it’s side.

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Changing the Floor Tool Blades
Lower the oor tool then unscrew the retaining knobs and slide it o the holding bracket.
Rinse the oor tool assembly with clean water and ret.
Periodically the oor tool blades should be examined and checked for wear and damage.
Replacement is a reversal of the removal process.
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2
3
1
5
Floor Tool Overview
1. Retaining pins x 4
2. Front blade (slotted)
3. Blade carrier
4. Rear blade
5. Floor tool main body
Always ensure that the machine is switched o prior to any maintenance. !!
NOTE: The blades are designed to be
reversible, thus extending their useful
working life.
Remove oor tool. Remove four retaining pins.
Turn the oor tool over. Separate the blade from the carrier. Peel away blades.

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Machine Charging
As the machine is used and the batteries are discharged, the meter lights will go out from right to left.
The large capacity gel batteries are sealed for life and are totally maintenance free.
The on-board charger automatically monitors the charging process and will switch o when the batteries are fully charged.
NOTE: The charging lead supplied with your machine may dier than the lead shown.
Once the charging lead has been connected the display panel will show ‘INHIBITED’.
The battery charge indicator display lights will ash in unison and the machine will not operate.
NOTE: Charger viewing panel only available on certain models.
Always ensure that the machine is switched o prior to charging. !!
Battery charge level is full. Charge machine when 3 red lights are illuminated. When 3 red lights ash all cleaning functions
will disable, charge immediately.
Machine charging point, above footplate. Insert country specic charging lead. Red charging indicator illuminates when charging.
To ensure a full charge, the machine should be left until the charging indicator shows green.
Once fully charged, disconnect the charging lead from both the power supply and the machine.
Charging indicator (see page 16).
50-100% 20-50% 0-20%

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UNDER NORMAL DAILY USAGE:
Re-charge the machine FULLY after each use regardless of machine operation time.
Do not leave the machine in a discharged state.
Battery Care
To ensure your machine remains at its maximum eciency
and prolong your battery life, please follow the simple steps below: !!
Signal (LED) Meaning
Red LED on First Phase (constant current Mode)
Orange LED on Second Phase (Constant Voltage Mode)
Green LED on Third Phase (Constant Voltage Mode) Charge Complete
Red LED ashing
followed by Pause
Cooling Fan Locked > 1 ash between pause
Over Voltage Protection / Output Short Circuit / Battery Reverse Polarity > 2 ashes between pause
Over Temperature Protection > 3 ashes between pause
Charge Time has exceeded 10 hrs during phase 1 or 2 > 4 ashes between pause
Under abnormal use;
i.e. leaving the machine without charging for a period of time, we advise that you follow these steps:
If the machine will be standing unused for a period of 30 days or more, then batteries
must be fully charged and battery fuses removed using the maxi fuse-puller provided,
prior to this period.
Batteries should be recharged every three months.
Charge fully the day before you start using the machine again.
NOTE: Only available on certain models.
Charging Light Sequence

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Green Status Indicator Fault Possible Cause Eect on Product Investigate the Following Action Required If Fault Persists
1 Flash with pause Batteries voltage low Batteries not been charged Operating time
severely reduced or machine will not operate
Check when machine last charged Charge batteries immediately
Possible bad connection between batteries, controller, charger or fuses caused by loose connections, damaged wiring, water ingress
Switch OFF the machine : Remove Fuses Check connections to batteries, charger and fuses for loose wires or screws
Tighten loose connections and replace damaged components
Not accepting charge due to faulty battery / cell
Check each battery Voltage individually to detect defect unit 10.5V min
Replace batteries as required
Charger not functioning Check battery voltage and charge current ensuring
charger red fault light is extinguished
Replace charger
2 Flashes with pause Traction motor
disconnected
The motor has a bad connection
The motor will not operate
Check all connections and leads between motor and controller
Tighten loose connections and replace damaged components
Motor disconnected TCO activated (Thermal Cut Out) Motor failed to open circuit
3 Flashes with pause Traction motor
wiring trip
The motor has a short circuit to a battery
Motor will not operate Check all connections and leads between the motor and controller
4 Flashes with pause Battery Lockout The battery charge level
has fallen below the battery lockout level and the controller is inhibiting machine functions
Machine functions not working
Check battery voltage and charge current ensuring charger red fault light is extinguished
Charge batteries immediately
Check each battery voltage individually to detect defect unit 10.5V min
6 Flashes with pause Charger connected The controller is being inhibited
from driving, this may be because the battery charger is connected
Machine functions not working
Remove charger to operate machine
8 Flashes with pause Controller trip A controller trip is indicated Machine functions not
working
Check all connections and leads Tighten loose connections
and replace damaged components
9 Flashes with pause Brake deactivated
or failed
Poor brake connections Brake failure or deactivation
Traction drive disabled Check brake wiring and brake lever Replace brake or wiring as
necessary. Reactivate brake by engaging brake lever
10 Flashes with pause High battery voltage Poor connections between
battery controller and traction motor
Machine functions not working
Check each battery Voltage individually to ensure voltage < 14 volts Check connections on controller batteries and traction motor Check combined battery pack voltage is < 28 volts
Contact Service Agent

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PROBLEM CAUSE SOLUTION
Machine will not operate Missing or blown fuses
Key in the ‘OFF’ (0) position
Low battery charge
Machine stop button in ‘OFF’ mode
Machine is connected and charging
Fit or replace fuse (page 5)
Turn key to ‘ON’ (1) position (page 5)
Charge batteries (page 15)
Reset stop button (page 10)
Take o charge (page 15)
Vacuum will not operate Floor tool in raised position
Waste water tank full
Lower oor tool (page 6)
Empty waste water tank (page 12)
Poor water pick-up Waste water tank full
Clogged / blocked vacuum hose
Loose hose connections
Debris basket lter clogged / blocked
Separator air lter clogged / blocked
Poor separator seal
Damaged separator seal
Damaged / split vacuum hose
Damaged oor-tool blades
Low battery charge
Empty waste water tank (page 12)
Remove and clean (page 12)
Push tight connections (page 6)
Remove and clean (page 13)
Remove and clean (Page 12)
Clean and ret (page 12)
Renew (contact service dept)
Renew (contact service dept)
Renew (contact service dept)
Recharge batteries (page 15)
No brush / scrub function No brushes tted
Brush deck raised
Check and t (page 7)
Lower brush deck (page 7)
Little or no water ow Clean water tank empty
Clean water tank lter blocked / clogged
Incorrect water ow setting
Brush deck raised
Fill clean water tank (page 8)
Remove and clean (13)
Adjust as desired (Page 9)
Lower brush deck (page 7)
Machine just ‘stops’ while operating Too much load on the brush system Reset the machine using the key and decrease the
brush load to best suit the oor type (page 10)
Trouble Shooting
Failure to rectify the problem or in the event of a breakdown contact your Numatic dealer or
Numatic Technical helpline [phone]
Model - CRO 8055 / 8072
(Empty) Net Weight
120 A/Hr Brush Weight Brush Width Brush Pressure
Pad
Width
Pad
Pressure Brush Motor Vac motor
CRO 8055 - 200 kg
CRO 8072 - 220 kg
CRO 8055 - 23 kg
CRO 8072 - 32 kg
550 mm
370mm x 2
11.4 G/cm2
19.9 G/cm2
508 mm
360mm x 2
9.3 G/cm2
16.6 G/cm2
24 V
600 W
24 V
400 W
Transaxle Run Time
2 x 120 A/Hr
Run Time
2 x 100 A/Hr
Total Battery
Weight 120 A/Hrs
Total Battery
Weight 100 A/Hrs
Charge Times
2 x 120 A/Hrs
Charge Times
2 x 100 A/Hrs
24 V
400 W 3 Hrs 2 Hrs 74 kg
(163 lbs)
62 kg
(136 lbs)
10A = 12 Hrs
20A = 7 Hrs
35A = 4.5 Hrs
10A = 8 Hrs
20A = 5-6 Hrs
35A = 3-4 Hrs
Brush Speed AirFlow Transit Speed Capacity Water Flow Rates Cleaning Area Sound Pressure
150 rpm 24.2 L/sec 0-6 Km/hr 80L / 80L
0.5 / 1.0 / 1.5
2.0 / 3.0
L/min
CRO 8055 - 1700m2 @ 3.5 K/Hr
CRO 8072 - 2200m2 @ 3.5 K/Hr ≤ 70dB (A)
Hand Arm Vibration Whole Body Vibration Height Length Width Max Gradient
Travelling (Quarry Tiles)
1.84 m/s2
(Uncertainty 0.92 m/s2)
ISO 5439-1
Travelling (Quarry Tiles)
1.11 m/s2
(Uncertainty 0.56 m/s2)
ISO 2431-1
1160 mm 1460 mm
CRO 8055 - 805 mm
CRO 8072 - 948mm
11%
Specifications

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LCD Display Fault Possible Cause Eect on Product Investigate the Following Action Required If Fault Persists
Blank No power Key switched o
Emergency stop pressed
Machine will not operate Key switched o
Emergency stop pressed
Switch key on Release emergency stop
‘OVER CURRENT’ Brush over current Brush pressure too great
Brush current exceeds 32A Wrong type of brush for surface
Vac. brush, water and detergent motors / pump will not operate Brush LED’s all ash in unison until the pedal is released
Release brush pressure Change type of brush Restart machine
‘UNDER VOLTS’ Battery voltage dropped
below 21 Volts Left most battery LED ashes
Batteries require recharging Faulty cell on battery
Machine will not operate Battery leads and connections Charge batteries
Replace battery (if cell damaged)
‘VAC OVER CURRENT’ Vacuum motor fault Debris entering vacuum motor
Water ingress
Machine disabled Restart machine
Replace vacuum motor
‘INHIBITED’
MACHINE INHIBITED - NO OPERATION
Contact Service Agent
To view CRO 8055/8072 run time information turn the key to the (1) position. Press the run-time information button to cycle between the dierent modes. T = Traction run-time V = Vacuum total run-time B = Brush total run-time W = Water Pump total run-time
Trouble Shooting

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No HOT drinks
when operating
this machine.
Safety Critical Component:
Charging Leads: Ho5VV-F x 1.0 mm2 x 3 Core
Transaxle: 205190
Battery Charger: (230V), (115V)
WEEE (Waste, Electrical and Electronic Equipment)
Scrubber dryer Accessories and packaging should be sorted for environmentally-friendly recycling.
Only for EU countries.
Do not dispose of scrubber-dryer into household waste.
According to the European Directive 2002/96/EC on waste electrical electronic equipment and its incorporation into
national law.
Scrubber-dryers that are no longer suitable for use must be separated, collected and sent for
recovery in an environmentally-friendly manner.
Ear Protection Safety Footwear Head Protection Safety Gloves
Dust / Allergens
Protection
Eye Protection Protective Clothing Hi-Vis Jacket Caution
Wet Floor Sign
PPE (Personal protective equipment) that may be required for certain operations.
Note: A risk assessment should be conducted to determine which PPE should be worn.
CAUTION
Rating Label
1Company Name & Address
2Machine Description
3Power rating
4Voltage Frequency
5Max Gradient
6CE Mark
7Weight (ready to use)
8WEEE Logo
9Ingress Protection Rating
10 Machine yr/wk Serial number
11 Machine Description
12 Noise Rating
13 Hand Arm Vibration
About the Machine
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