Noblelift NB530 User manual

Version 05/2021
NB530-SMS-001-EN
Operator Manual
NB530 Walk-Behind Floor Scrubber
WARNING
Do not operate the floor scrubber before
reading and understanding the operator
manual.
NOTE:
•Please check product type and parameters of
your scrubber in this manual as well as on the
ID-plate.
•Keep this operator manual for future reference.

CONTENTS
INTRODUCTION..............................................................................................................................1
MANUAL PURPOSE AND CONTENT...................................................................................1
HOW TO KEEP THE MANUAL...............................................................................................1
DECLARATION OF CONFORMITY.......................................................................................1
ACCESSORIES AND MAINTENANCE..................................................................................1
CHANGE AND IMPROVEMENT............................................................................................2
INTENDED USE.......................................................................................................................2
MACHINE IDENTIFICATION..................................................................................................2
TRANSPORTING AND UNCRATING....................................................................................2
SAFETY............................................................................................................................................3
SAFETY SYMBOLS.................................................................................................................3
GENERAL SAFETY INSTRUCTIONS ...................................................................................3
MACHINE SETUP............................................................................................................................6
MAIN COMPONENTS.............................................................................................................6
MAIN COMPONENTS DESCRIPTION..................................................................................8
TECHNICAL DATA..................................................................................................................9
ELECTRICAL WIRING DIAGRAM........................................................................................10
OPERATION INSTRUCTIONS.....................................................................................................10
INSTALLING BATTERIES.....................................................................................................10
INSTALLING AND REMOVING DISK BRUSHES/PADS...................................................11
ATTACHING SQUEEGEE ASSEMBLY...............................................................................11
START AND STOP OF MACHINE.......................................................................................11
DRAINING TANKS.................................................................................................................12
AFTER USE............................................................................................................................13
AFTER LONG-TERM INACTIVITY.......................................................................................13
INITIAL USE ...........................................................................................................................13
MAINTENANCE.............................................................................................................................13
REGULAR MAINTENANCE CHECKLIST ...........................................................................14
CHARGING BATTERY..........................................................................................................14
CLEANING SQUEEGEE.......................................................................................................15
SQUEEGEE BLADE CHECK AND REPLACEMENT.........................................................15
CLEANING BRUSH/PAD ......................................................................................................16
VACUUM FILTER CLEANING..............................................................................................16
SOLUTION FILTER CLEANING...........................................................................................17
TROUBLESHOOTING...................................................................................................................17
FAULT CODE.........................................................................................................................17
COMMON TROUBLE SHOOTING.......................................................................................18
SCRAPPING AND DISPOSE.......................................................................................................19
HAZARDOUS SUBSTANCE AND CONTENT....................................................................19

1
INTRODUCTION
NOTE
The code of related components in ( ) can be found in the chapter of machine
description.
MANUAL PURPOSE AND CONTENT
⚫This manual is to provide the operator with the necessary information for the correct and safe use of the
machine, which includes the technical data, safety, operation, storage, maintenance, accessories and
dispose of the machine.
⚫Before performing any operation or maintenance on this machine, the operator and the qualified
technicians must read this manual carefully.
⚫If you have any questions about the explanation of this manual or want more related information, please
contact our company.
⚫The purpose of this manual is to allow operators and qualified technicians to carry out the maintenance
of the machine. The operator is not allowed to perform the steps that must be completed by the
technicians. All instructions in this manual should be seriously followed, otherwise our company shall not
be liable for any losses arising therefrom.
HOW TO KEEP THE MANUAL
⚫This manual must be placed near the machine. Properly keep the manual away from water, fire or other
dangers.
DECLARATION OF CONFORMITY
⚫The declaration of conformity is provided with the machine to prove that the machine complies with
relevant criteria and regulations.
NOTE
The certificate of conformity is provided with the documentation of the machine.
ACCESSORIES AND MAINTENANCE
⚫All necessary operation, maintenance and repair procedures must be performed by qualified personnel or the
maintenance center designated by our company. Only original spare parts and accessories are allowed to be
used on the machine.
⚫If you need service or want to order spare parts or accessories, please contact our company's after-sales
service department or the agent, and provide the model and serial number of the machine.

2
CHANGE AND IMPROVEMENT
⚫Our company is committed to the continuous improvement of the products and reserves the right to notify the
improvements and changes of the products that have been sold.
INTENDED USE
⚫This floor scrubber can be used in commercial and industrial environments, and it is suitable for cleaning
smooth and hard floors (washing and sewage collecting). It must be used in a safe environment by a qualified
operator. This scrubber is not suitable for cleaning outdoors floors, carpets or rough floors.
MACHINE IDENTIFICATION
⚫The model and serial number of this machine are marked on the identification label. The information on this
label is very important, which is required to be provided when you order the accessories for the machine.
TRANSPORTING AND UNCRATING
⚫Carefully check machine for signs of damage. Report damages at once to carrier. Record the damages on
paper to reserve the right for compensation.
After uncrating, check if the machine is equipped with the following items:
1.Technical documents, including operation manual;
2. Battery connecting cable.

3
SAFETY
The following symbols indicate potential dangers. In any case, please read this information carefully and take
necessary precautions to avoid possible injury and property loss. It is necessary to have cooperation of the
operator to avoid injury, otherwise any precautions are ineffective. Most of the safety accidents that occur in
factories are caused by people who fail to obey simple and effective instructions during working and walking.
A careful and prudent operator is the best guarantee against accidents and is essential for successful
completion of any prevention program.
SAFETY SYMBOLS
DANGER ！
It indicates the danger that may cause death of the operator.
WARNING
！
It indicates a potential hazard that may cause people injury and objects damage.
CAUTION
！
It indicates a caution related to important or useful functions.
Pay attention to the paragraphs marked by this symbol.
NOTE
It indicates notes on important matters and useful functions.
CONSULTATION
It indicates the necessity to refer to the instructions of this manual before performing
any procedures.
GENERAL SAFETY INSTRUCTIONS
Specific warnings and cautions for potential damages to personnel and machine are notified as follows:
DANGER
！
⚫Disconnect the battery before performing any maintenance/repair procedures.
⚫Only trained or authorized personnel is allowed to use this machine. Children or disabled people cannot
use this machine.
⚫Keep the battery far from sparks, flames and incandescent material. During the normal operation
explosive gases are released.
⚫Do not wear jewelry when working near electrical components.

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⚫Do not work on the ground that cannot bear the weight of the machine.
⚫Do not use the machine near toxic, dangerous, flammable, explosive dust, liquid, or steam.
⚫The battery will produce explosive hydrogen during the charging process. Please keep the recovery tank
open during charging, and ensure that the surroundingarea is well ventilatedandaway fromopen flames.
WARNING!
⚫Please check if the values of voltage and frequency indicated on the serial number sticker match with
the power before using the on-board charger.
⚫Do not move the machine by pulling the charger cord, do not let the cord pass through a closed door,
or wind the cord around objects with sharp edges or angles, and do not let the machine run over the
cord. Please keep the charger cord away from hot surfaces.
⚫Do not charge the battery when the wire or plug is damaged. If the machine is damaged, not working
properly, has been placed outdoors or dropped into water, please return the machine to the repair
center.
⚫In order to avoid fire, electric shock or personal injury, please make sure someone is on duty when the
machine is energized. Before taking any maintenance or repair, please disconnect the charger from
the power supply.
⚫Do not smoke while charging.
⚫The machine must be protected from sunlight, rain and bad weather. Please store the machine indoors.
⚫Do not use the machine as a toy. Be careful when there are children nearby.
⚫The machine can only be used under the instructions manual, and only the accessories approved by
the company can be used.
⚫Take precautions to avoid the danger that hair, jewelry and loose clothes may be caught by the moving
parts of the machine.
⚫The responsible personnel can leave the machine only after confirming that the machine cannot move
itself, otherwise someone must be on duty there.
⚫Please do not use the machine on a slope exceeds the specified angle.
⚫Please do not use the machine in particularly dirty areas.
⚫When using the machine, please be careful not to injure people or objects around.
⚫Do not collide with the surrounding shelves, especially when the collision may cause the danger of
falling objects.
⚫Keep the machine away from corrosive liquids.
⚫The storage temperature and working ambient temperature of the machine must be between 0-40°C
(32°F~104°F).
⚫The humidity of the air must be between 30%-95%.
⚫Do not use the machine as a means of transportation.
⚫Do not use the machine on a slope higher than 2%.
⚫For stationary machine, stop the working brush to avoid damage to the ground.
⚫When the machine catches fire, please use dry powder fire extinguisher instead of liquid one.
⚫Do not change the safety protection of the machine, be sure to follow the maintenance instructions
carefully.
⚫Keep the working area unobstructed and do not use the machine in blocked aisle. Remove dust, hair
and any objects that may obstruct the air circulation from the aisles.

5
⚫Do not remove or change the stickers on the machine.
⚫The vibration generated by the machine when operating in accordance with the instructions is safe.
The vibration of the machine should be lower than 2.5m/s² (98/37/EEC-EN 1033/1995).
⚫This machine cannot be used on roads or public streets.
⚫Be careful when transporting the machine when the temperature is below 0°C (32°F). The water in
tanks and hoses may freeze and seriously damage the machine.
⚫Please use the brushes and pad provided with the machine and the parts specified in the instruction
manual. Other brushes and pads may reduce security.
⚫In case of machine malfunctions, ensure that these are not due to lack of maintenance. If necessary,
request assistance from the authorized personnel or from an authorized service center.
⚫If the accessories really need to be replaced, please obtain original accessories from an authorized
dealer or agent.
⚫In order to ensure the safe and correct use of the machine, please ask authorized personnel or
maintenance center to perform regular maintenance according to the manual.
⚫Please read all relevant instructions carefully before performing any maintenance/repair procedures.
⚫Do not directly rinse the machine with water or corrosive materials.
⚫This machine must be properly disposed because of the toxic and hazardous materials (batteries, etc.)
that must be disposed by a specific center in accordance with relevant regulations (see the chapter for
disposal).

6
MACHINE SETUP
MAIN COMPONENTS
1. Control panel
2. Handle
3. Recovery tank lid
4. Recovery tank
5. Hinge
6. Solution tank
7. Brush disk cover
8. Brush disk/ Pad driver
9. Load wheel
10. Solution tank level hose
11. Caster
12. Recovery tank drain hose
13. Squeegee vacuum hose
14. Squeegee adjusting knob
15. Squeegee fixing knob
16. Squeegee blade
17. Squeegee lift/lower foot pedal
18. Squeegee lifting lever
19. Charging socket
20. Float shut-off screen
21. Float shut-off screen holder
22. Solution tank fill-port
23. Solution tank filter
24. Draining electromagnetic valve
25. Filter
26. Solution tank drain tap
27. Solution tank water tap

7
28. Battery
29. Identification plate
30. Tank rope
31. Vacuum pressure plate
32. Balance adjusting knob
33. Brush angle adjusting knob
34. Battery indicator/ fault code display
35. Vacuum motor button indicator
36. Vacuum motor button
37. Brush/pad driver indicator
38. Brush/pad driver button
39. Brush/pad driver removal button
40. Brush/pad driver removal indicator
41. Key switch
42. Solution flow indicator
43. Solution flow button

8
MAIN COMPONENTS DESCRIPTION
Control panel (1) --This panel is the control part of the machine, see the description of control and switch.
Handle (2) -- Hold this handle and operate the machine through it.
Recovery tank lid (3) -- This lid seals the recovery tank. When cleaning the recovery tank, it can be taken off and
hanged on the fill-port.
Recovery tank (4) -- This tank stores sewage sucked up by squeegee.
Hinge (5) -- This hinge connects solution tank and recovery tank.
Solution tank (6) -- This tank stores solution/clean water.
Brush disk cover (7) -- This brush cover mounts brush disk, pad driver and the brush motor.
Brush disk/ Pad driver (8) -- A brush disk or a pad driver with a polishing pad can be installed on the machine.
Load wheel (9) -- This wheel carries the weight of the machine.
Solution tank level hose (10) -- This hose indicates the level of water in the solution tank.
Caster (11)-- This caster turns the machine.
Recovery tank drain hose (12)-- This hose drains dirty water from the recovery tank.
Squeegee vacuum hose (13) -- This hose transfers sewage from the squeegee to the recovery tank.
Squeegee adjusting knob (14)--This knob adjusts the angle of the squeegee to be well-matched with the ground
and the sewage can be well-sucked.
Squeegee fixing knob (15) -- This knob connects and fixes the squeegee to the machine.
Squeegee assembly (16) --This squeegee collects the dirty water after washing.
Squeegee lift/lower foot pedal (17) -- This pedal lifts/lowers/presses the brush disk.
Squeegee lifting lever (18)-- The lever lifts or lowers the squeegee.
Charging socket (19) -- This socket is used to charge the battery.
Float shut-off screen (20)-- Keep this part clean orthe vacuum motor will be clogged.
Float shut-off screen holder (21) -- This fixes the floating shut-off screen.
Solution tank fill-port (22)-- This port makes filling water/ detergent (low-foam type) easier to the solution tank.
Solution tank filter (23)-- This filter prevents the dirt into the solution tank.
Draining electromagnetic valve (24)-- This valve controls the flow of water and the output.
Filter (25)-- This filter filters the solution liquid before supplying to the brush.
Solution tank drain tap (26) -- This tap is used for emptying the solution tank.
Solution tank water tap (27) -- This tap is used for turning on/off the solution liquid.
Battery (28)-- This battery supplies power for the operation of the machine. The optional battery must be 24V.
Identification plate (29)-- This ID plate indicates the data of the machine.
Tank rope (30)-- This rope helps holding the open recovery tank.
Vacuum pressure plate (31) -- This plate fixes the filter sponge and protects the vacuum pump.
Balance adjusting knob (32) -- This knob is used to adjust the horizontal balance of the brush disk/ pad driver to
prevent shaking.
Brush angle adjusting knob (33) -- This knob is used to adjust the angle of brush disk/pad driver, which influence
the machine speed.
Battery indicator/ fault code display (34) -- This display indicates the battery charge level and fault codes.
Vacuum motor indicator (35) -- This indicator light indicates the working state of the vacuum motor.
Vacuum motor button (36) -- This button is used for turning on/off the vacuum motor.
Brush/pad driver indicator (37) -- This indicator light indicates the working status of the brush motor.
Brush/pad button (38) -- This button is used for turning on/off the brush motor.
Brush/pad removal button (39) -- Long press this button to automatically release the brush disk/ pad driver.
Brush/pad removal indicator ( 40 ) -- This indicator light indicates the working status of the automatic brush
removal switch.

9
Key switch (41) - - This switch is used for turning on/off the power of machine.
Solution flow indicator (42) -- The three indicator lights indicate three different solution flows.
Solution flow button (43) -- This button is used for adjusting the flow of detergent/water supplied to the brush.
Three flows are available.
TECHNICAL DATA
Model
NB530
Machine Height
mm
1060
Solution tank capacity
L
50
Recovery tank capacity
L
50
Front wheel diameter
mm
200
Rear wheel diameter
mm
100
Vacuum motor power
W
400
Gradeability
%
2
Sound pressure level
dB (A)
65.8
Battery (maintenance free AGM)
(2*12V) 24V100Ah/3-4h
Battery compartment size (L*W*H)
mm
360*360*240
Vacuum capacity
mmH2O
＞1055
Scrubbing path width
mm
530
Squeegee width
mm
760
Maximum length
mm
1228
Machine width (without squeegee)
mm
550
Brush/pad diameter
mm
530
Net weight (without batteries)
kg
89
Brush motor rated power
W
550
Brush rotate speed
rpm
160
Minimum brush pressure
kg
20.5
Maximum brush pressure
kg
27.8

10
ELECTRICAL WIRING DIAGRAM
OPERATION INSTRUCTIONS
WARNING
If the battery is installed or wired incorrectly, the electrical components of the machine may
be seriously damaged. The battery must be installed by qualified personnel. Please check
whether the battery is damaged before assembling. Disconnect the battery connector and
charger plug. Handle the battery with great care.
This machine requires two 12V batteries, please follow the solution water tank drawing for wiring.
INSTALLING BATTERIES
M1
Brush Motor
L2
Vacuum motor indicator
M2
Vacuum Motor
L3
Water flow 2
FU1
Fuse 50A
L4
Water flow 3
FU2
Current limit 40A
L5
Water flow 1
FU3
Current limit 40A
S1
Brush removing switch
YV
Water flow control EM valve
S2
Brush motor switch
SY
Key switch
S3
Water flow switch
L0
BDI
S4
Vacuum motor switch
L1
Brush motor indicator

11
1. Open the recovery tank lid (3) to check whether the recovery tank is empty, if not, drain it through the drain
hose (12).
2. Remove the recovery tank lid (3), hang it on the solution tank fill-port (22), and then turn the recovery tank
(4) to one side.
3. Put the battery into the battery compartment, wire it according to the solution tank drawings, and connect
the battery to the machine through the connector.
INSTALLING AND REMOVING DISK BRUSHES/PADS
The machine can be equipped with brush or pad depending on the different cleaning tasks.
1. Place the brush disk (A) or pad driver (B) under the holder.
2. Operate the squeegee lower/lift foot pedal (17) to lower the holder for installing the brush/pad driver.
3. Start the machine through turning the key switch to "ON" position.
4. Turn on the brush disk/pad driver switch (38) and vacuum motor switch (36).
5. Gently push the machine forward to install the brush disk/pad driver. If necessary, repeat this operation until the
brush disk/pad driver is installed.
6. Depress the foot pedal (17) to lift the holder in order to remove the brush disk/pad driver, and then press and
hold the brush removal switch (39) until the indicator light flashes, and the brush disk/pad driver will fall to the
ground automatically.
7. If you need to remove the brush manually, just rotate the brush disk/pad driver in the opposite direction to the
normal direction.
ATTACHING SQUEEGEE ASSEMBLY
Install the squeegee assembly (16) and tighten it with the squeegee fixing knob (15), and then assemble the
vacuum hose (13) to the squeegee.
START AND STOP OF MACHINE
START THE MACHINE
1. Follow the methods described above for preparation.
2. Turn on the key switch (41) to "I" position. Check the battery charge through the BDI. If the red light of BDI is
on, please turn the key switch to "O" position and charge the battery.
3. Hold the handle and move the machine to the working area.
4. Use the lifting lever (18) to lower the squeegee (16).

12
5. Press the pedal (17) to place the brush disk/pad driver on the ground.
6. Press the brush disk/pad driver button (38) and vacuum motor button (36), the brush disk/pad driver indicator
light (37) and vacuum motor indicator light (35) will be on.
7. Adjust the water flow according to the state of the ground to be cleaned, press the solution flow button (43) and
adjust the water flow.
8. The angle adjusting knob can adjust the speed of the machine. Increase the tilt angle of the brush disk by turning
the knob to the direction with rabbit mark, which makes it easier to push the machine and narrows the scrubbing
path width. Decrease the tilt angle of the brush disk by turning the knob to the direction with tortoise mark, which
makes it heavier to push the machine and widens the scrubbingpath width.Adjustment dependson the cleanliness
of the ground.
9. Adjusting the balance knob makes the machine walk straightly.
10. Check the squeegee if it works well, adjust the balance knob if necessary (14).
11. Adjust the squeegee adjusting knob (14) until the rear squeegee blade fully touches the ground, and the front
squeegee blade must be in light contact with the ground.
12. Hold the handle and push the machine to start scrubbing.
STOP THE MACHINE
13. Press the brush disk/pad driver switch (38) to turn off the drive motor.
14. When the brush drive motor turns off, depress the foot pedal (17) to raise the brush disk/ pad driver.
15. Press the vacuum motor button (36) to turn off the vacuum motor. After a delay of 5 seconds, the vacuum
motor is off, for sucking up the remaining sewage on the ground.
16. Lift the squeegee (16) with the lifting lever (18).
17. Turn the key switch (41) to "O" position.
18. Make sure that the machine cannot move independently.If the floor is particularly difficult to clean, it is possible
to turn on the brush disk/pad driver extra pressure function by pressing the pedal (17) to position (17c).
CAUTION !
To avoid any damage to the floor surface, turn off the brush/pad driver when the machine
stops in an area, especially when the extra pressure function is on.
Working with brush disk/pad driver extra pressure function turned on
If the floor is particularly difficult to clean, it is possible to turn on the brush disk/pad driver extra pressure function
by pressing the pedal (17) to position (17c).
Charging the battery during work
There are 10 notches on the BDI display (34) indicating the state of the battery charge. When only the last red
notch (81c) is on, the battery is run out of charge. After a few seconds, the brush disk/pad driver will automatically
turn off. Move the machine to the charging area for charging as soon as possible.
CAUTION !
Do not use the machine when the battery charge is low, to avoid damaging the batteries
and reducing the battery life.
DRAINING TANKS
The float shut-off screen (20) will block the inspiratory path of vacuum motor when the recovery tank (4) is full.

13
A sudden noise increase of the vacuum motor indicates the recovery tank (4) needs to be drained immediately.
CAUTION !
If the vacuum path is closed accidentally (for example, when the float ball is activated
because of a sudden machine movement), to resume the operation: turn off the vacuum
motor by pressing the vacuum motor button(36), then open the recovery tank lid (22) and
check if the float ball inside the shut-off screen (20) has gone down to the water level. Then
close the recovery tank lid (3) and press the vacuum motor button (36) to turn on the
vacuum motor.
When the recovery water tank (4) is full, drain it according to the following procedures.
DRAINING RECOVERY TANK
1. Stop the machine.
2. Depress the foot pedal (17) to raise the brush disk/ pad driver.
3. Lift the squeegee (16) by the lifting lever (18).
4. Move the machine to the designated sewage discharge area.
5. Drain the recovery tank (4) through the drain hose (12).
DRAINING SOLUTION TANK
6. Then rinse the recovery tank with clean water.Perform step 1 to step 4.
7. Turn on the solution tank water tap (27) and drain the solution tank (6). Then rinse the tank with clean water.
AFTER USE
After working, complete the following steps before leaving the machine:
1. Remove the brush disk/pad driver according to the procedures shown in the relevant chapter.
2. Drain the solution tank and recovery tank according to the procedures shown in the relevant chapter.
3. Perform the daily maintenance procedures (see the maintenance chapter).
4. Store the machine in a clean and dry place, with the brush disk/ pad driver and the squeegee lifted or
removed.
AFTER LONG-TERM INACTIVITY
If the machine is not going to be used for more than 30 days, proceed as follows:
1. Perform the procedures shown in chapter of After Use.
2. Disconnect the battery and the machine.
3. Charge the battery regularly.
INITIAL USE
After the first 8 hours of use, check if the fastening and connecting parts of the machine are loose, and check
for visible damage and leakage.
MAINTENANCE
The service life and maximum operational safety of the machine are guaranteed by correct and regular

14
maintenance. The following checklist provides a general maintenance schedule for the machine. The
maintenance interval depends on the working condition of the machine, which should be set by the person in
charge of maintenance.
WARNING !
The procedures must be carried out with the machine off and the battery disconnected.
Moreover, read carefully the instructions in the Safety chapter before performing any
maintenance procedures.
All regular or extraordinary maintenance procedures must be performed by qualified personnel, or by an
authorized service center. This manual describes onlythe easiestand most common maintenanceprocedures.
For other maintenance procedures shown in the Regular Maintenance Table, refer to the Service Manual that
can be consulted at any service center.
REGULAR MAINTENANCE CHECKLIST
Check Item
Daily (after use)
Weekly
Semiannually
Charge battery
Clean squeegee
Clean brush/pad
Clean solution tank and recovery tank
Check seal of tanks
Check squeegee and replace it if necessary
Clean solution tank filter
Clean vacuum motor filter
Check if all screws and nuts are tightened
CHARGING BATTERY
NOTE
Charge the batteries when the red indicator light (34) turns on, or at the end of every working
cycle.
CAUTION！
Keep the battery fully charged to extend the service life of the battery.
CAUTION！
Charge the battery as soon as possible when the battery is low, otherwise the battery life will be
shortened. Please check the battery at least once a week.
CHARGE THE BATTERY
1. Turn the key switch (41) to "O" position.
2. Check if charger is suitable, the output voltage must be DC 24 V.

15
3. Connect the charger to the charging socket (19) of the machine.
4. Connect the charger to the power supply and start charging.
5. When the charger shows fully charged, remove the charger from the power supply and the charging socket
in turn.
CAUTION！
Do not turn on the key switch (41) or operate the machine while charging the battery.
CLEANING SQUEEGEE
NOTE
The squeegee must be clean and its blades must be in good conditions in order to get a
good drying.
CAUTION !
It is advisable to wear protective gloves when cleaning the squeegee because there may
be sharp debris.
1．Move the machine to a level ground.
2．Turn the key switch (41) to "O" position.
3．Lift the squeegee (16) by the lifting lever (18).
4．Loosen the fixing knob (15), and remove the squeegee (16).
5．Remove the vacuum hose (13) from the squeegee.
6．Clean the squeegee (16). 8. In particular, clean the compartments (A, Fig. 2) and the vacuum hose
from dirt and debris. Check the front squeegee blade (C) and the rear squeegee blade (D) for integrity,
cuts and tears; otherwise replace them (see the procedures in the following paragraph).
7．Assemble the squeegee in the reverse order of the above.
SQUEEGEE BLADE CHECK AND REPLACEMENT
1. Clean the squeegee (Fig. 2) as shown in the previous paragraph.
2. Check that the edge (E, Fig. 2) of the front blade (C) and the edge (F) of the rear blade (D), they should be
on the same horizontal level over the entire length; otherwise adjust the height of squeegee according to the
following procedures:
-- Loosen the buckle (G), release the retainers (M) to adjust the rear blade (D); then lock the buckle.
-- Unscrew the knob (I) and adjust the front blade (C); then tighten the knob.
3. Check front blade (C) and rear blade (D) for integrity, cuts and tears; if necessary replace them as shown
below. Check if the front edge (J) of the rear blade is not worn; otherwise, turn it upside down (the upper edge
is intact). If the upper edge is worn, then replace the blade according to the following procedures:
-- Loosen the buckle (G), release pressure strip from the retainers (M) and remove the retaining strip
(K). Replace the worn blade and assemble the new rear blade in the reverse order of removal.
-- Unscrew the knob (I) and remove the retaining strip (L), then replace the front blade (C). Assemble
the front blade in the reverse order of removal. After the blade replacement (or overturning), adjust the
height as shown in the previous procedures.
4. Connect the vacuum hose (13) to the squeegee.
5. Assemble the squeegee (16) and tighten the knob (15).
6. If necessary, adjust the balance of the squeegee through adjusting knob (14).

16
CLEANING BRUSH/PAD
CAUTION ！
It is advisable to wear protective gloves when cleaning the brush/pad because there may
be sharp debris.
1. Remove the brush disk/ pad driver from the machine according to the methods described above.
2. Clean the brush disk/ pad driver with water and detergent.
3. Check the brush bristles for integrity and wear, and replace the brush if necessary.
4. Check the pad for wear, and replace the pad if necessary.
Clean the recovery tank and the filter, inspect the sealing of the lid
1. Move the machine to the designated sewage discharge area.
2. Turn the key switch (41) to "O" position.
3. Remove the recovery tank lid (3) and rinse the lid (3), recovery tank (4) and the screen (20) with clean
water. Drain the sewage through the hose (12).
4. If necessary, loosen the buckle of the screen (20), clean the float ball and other parts and fit them back.
5. Check the sealing of recovery tank lid for integrity. Replace the sealing if necessary.
NOTE
The seal of the lid creates vacuum in the tank which is necessary for sucking in the
recovery water.
VACUUM FILTER CLEANING
1. Gently turn the recovery tank to one side, if necessary, drain the water in the recovery tank first.
2. Take out the filter cotton assembled on the vacuum pressure plate (31).
3. Check if the vacuum filter is clean, if necessary, clean it with water and compressed air, and then fit it back in
place.
4. Turn the recovery tank back to normal working position.

17
SOLUTION FILTER CLEANING
1. Close the solution tank water tap (27).
2. Remove the filter cover and the filter screen, clean them with water, and then fit them back.
3. Fix the filter cover.
NOTE
The filter screen (E) must be correctly fitted on the housing (G).
4. Turn on the solution tank water tap (27).
TROUBLESHOOTING
FAULT CODE
State of the BDI
Fault
Possible Cause
Remedy
0 notch is
on
Unknown error
1. The machine is not on.
1. Check the machine and
the wiring cables.
2. BDI is broken.
3. Replace the PCB.
4. Controller failed.
2. Replace the controller.
1 notch
flashes
Battery is low
Battery voltage is too low.
Charge the battery.
3 notches
flash
Controller
temperature
failure
1. Controller temperature
is too high/low.
1. Turn off the key switch
and cool the controller
itself.
2. Controller failed.
3. Replace the controller.
5 notches
flash
Open circuit of
vacuum motor
Open connection for
vacuum motor.
Check the wiring of the
vacuum motor with
controller.
6 notches
flash
Open circuit of
brush motor
Open connection for
brush motor.
Check the wiring of the
brush motor with controller.
7 notches
flash
Over-current of
vacuum motor
1. Short circuit.
1. Check if there is short
circuit.
2. Vacuum motor failed.
3. Replace the vacuum
motor.
8 notches
flash
Over-current of
brush motor
1. Short circuit.
1. Check if there is short
circuit.
2.Brush motor failed.
2. Replace the vacuum
motor.
9 notches
flash
Over-voltage of
battery
Battery voltage is too
high.
Check if the battery
specification is correct.
Solution flow indicator
3 notches
flash
Open circuit of
electromagnet
valve
Open connection for
electromagnet valve.
Check electromagnet
valve.

18
COMMON TROUBLE SHOOTING
Trouble
Possible Cause
Remedy
Insufficient recovery
water vacuuming
The recovery tank is full.
Drain the tank.
The hose is disconnected from the
squeegee.
Connect the hose and the squeegee.
The float shut-off screen is clogged.
Clean the float shut-off screen and
check the float.
The hose or the inspiratory path is closed.
Clean the hose or the inspiratory path.
The squeegee is dirty or the blades are worn
or damaged.
Clean and check the squeegee.
The recovery tank lid is not correctly closed
or the sealing is broken.
Close the lid correctly or replace the
sealing.
Insufficient solution
flow to the brush
The solution/clean water filter is dirty and
clogged.
Clean the filter.
The dirty solution tank makes the drain hose
and tap clogged.
Clean the solution tank and the drain
tap.
The electromagnetic valve is damaged or
clogged.
Clean or replace the electromagnetic
valve.
Marks caused by
the squeegee
There are debris under the squeegee blade.
Remove the debris.
The squeegee blade is worn, shipped or torn.
Replace the squeegee blade.
The squeegee has not been balanced with
the adjusting knob.
Adjust the balance of the squeegee.