YANGZI X4 User manual

X4
FLOOR SCRUBBER
Operating instruction

X4
Content
Chapter 1 Description.................................................................................. 4
Chapter 2 Instruction................................................................................... 1
Chapter 3 Routine Maintenance and Disassembly and Replacement of
Wearing Parts...............................................................................................4
Chapter 4 Analysis Table of Common Problems of Floor Scrubber..........8
Chapter 5 Maintenance................................................................................ 9
Warranty card...................................................................................... 11
Warranty Conditions..................................................................................11
Floor Scrubber
operation instructions
X400
Floor Scrubber
operation instructions

X4
Parts
①Armrest ②Booster handle (optional)
③Squeegee lift handle ④Water level gauge
⑤Brush plate lift pedal ⑥Brush disc anti-collision wheel
⑦Clean water inlet ⑧Wastewater tank cover
⑨Brush ⑩Tires
⑪Anti-collision wheel ⑫Center control panel A
⑬Center control panel B ⑭Sewage pipe
⑮Suction pipe ⑯Squeegee
⑰Travel switch
Performance parameters
Category
Self-propelled
Ordinary
Drive motor power
300w
/
Fresh water tank capacity
55L
Recovery tank capacity
65L
Battery capacity
24V/100Ah
Operating hours
2-2.5h
2-3h
Total Weight
160.5kg
150kg
Product Size
1300*820*1070mm
Cleaning efficiency
3300㎡/h
Brush width
18 inch
Squeegee width
840mm
Cleaning width
520mm
Brush speed
19rpm5
Brush motor power
550w
Suction motor power
550w

X4
Chapter 1 Description
1.1 Content and Purpose
The following content points out potentially dangerous situations, please read
these instructions carefully and take necessary precautions. The essence of this
machine operating manual is to prevent injuries, and most accidents are caused at
work by not heeding basic safety rules. A careful and careful user is the best
guarantee against accidents, even stronger than some other precautions. When using
the machine, be sure to pay attention to your surroundings and people nearby,
especially children.
1.2 General Instructions
●Before any maintenance and repair, please turn the start switch to the off
position, and please remove the key from the main power switch.
●The machine must be used by qualified and authorized personnel. Children and
disabled persons are not allowed to use the machine.
●Keep the battery away from sparks, flames and smoke.
●Do not use it in a place where dangerous, flammable or explosive gas, liquid or
water vapor is present.
●This machine can clean general garbage. It is strictly forbidden to clean silk
ropes, belts, high-temperature sundries, accumulated water, flammable or toxic and
harmful substances, so as to avoid entanglement, burning the main brush and side
brush, and making them unable to work normally.
●Please keep loose clothing, hair, fingers and other body parts away from the
machine's air vents and any moving parts.
●When the machine stops, remember to turn off the power.
●Do not use the machine where the inclination exceeds the rated value of the
machine.
●Please do not smoke while charging the battery.
●Do not use the machine in a very dirty area. If the road garbage is thick, please
repeat the sweeping work twice or more.
●The machine should be in temperature between -10℃to 40℃.
●When using the machine, the temperature should be between -10°C and 40°C,
and the humidity should be between 30% and 95%.
●Do not use the machine as a means of transportation.
●When the machine is not moving forward, do not let the brush continue to rotate
to avoid damage to the ground.
●In case of fire, please remember to use powder fire extinguisher instead of
water.
●When the machine operation fails, make sure that the failure is not caused by
lack of regular maintenance.
●If some parts need to be replaced, you can buy spare parts from the original
manufacturer or authorized dealer.

X4
●Confirming that the machine is in proper operation and safe condition,
professionals or service center must work in accordance with the maintenance
section of this manual.
●Even if the machine is to be dismantled and scrapped, someone should be
there to observe it. Because some harmful substances (such as batteries, waste oil,
etc.) have met the standards, they should be sent to a specific center for processing.
1.3 Safety requirements for batteries
●It is necessary to avoid the battery being in a low voltage state, and it should be
charged as soon as possible.
●To avoid leakage of electricity, please keep the battery dry and clean, especially
to remove contaminants such as metal dust.
●It is forbidden to put metal parts (such as tools) on the battery to prevent the
battery from being short-circuited and burnt out.
●The charging room should be well ventilated.
●Do not connect or remove the battery when the key switch is in the ON position.
●Before removing or installing batteries, first disconnect the negative (-) battery
wire, and then disconnect the positive (+) battery wire. When rewiring, be sure to pay
attention to the polarity of the battery, as wrong connection will damage electrical
components.
●Avoid direct contact between the positive electrode and the negative electrode,
because it will cause a large current short circuit, generate high heat and even cause
a fire.
●When the machine is not used for a long time or the machine is repaired, it is
necessary to disconnect the battery cable.
1.4 General safety regulations
In addition to the provisions made in this manual, the required general safety
regulations and accident prevention guidelines must also be observed.
Even if you have used a similar sweeper before, please read the instructions
carefully. Reading the instructions beforehand will save you a lot of time in the future.
It is important that you become familiar with all accessories and controls and their
functions before you start using them. Read through this manual so you don't get
scrambled when you turn it on

X4
1
Chapter 2 Instruction
2.1 Buttons/Panels of the Machine
Center control panel A Center control panel B
2.1.1 The core control keys of the machine
●Power/Voltmeter (The display device can display the current battery voltage,
please charge when the voltage is lower than 21V)
●Power switch (start this switch, the device is powered on)
●Water suction button (start this button, the suction motor starts to work)
●Brushing button (start this button, the brushing motor starts to work)
●Remove the flashing button (start this button, you can remove the flashing disk)
●Forward and backward switch (start this button to control the machine to move
forward or backward)
Speed control switch (press the tortoise button, the machine runs at low speed;
press the rabbit button, the machine runs at high speed)
2.1.2 Charging the battery
●The charging socket cable requires at least a power cable with a diameter of
4mm.
●Note: The charger is placed on a stable platform, and pay attention to
moisture-proof, waterproof and drop-proof.
●The charging time must be guaranteed for 6-10 hours per charge. Make sure
the battery is fully charged when working.
●During the transportation of the charger, please do not carry the power cord by
hand to avoid loosening the terminals.
2.1.3 Adding water to the water tank

X4
2
Before using the machine, open the water tank cover and pour clean water into
the water tank. Pay attention to the clean water quality to prevent the waterway from
being blocked.
When the machine is used to clean the epoxy floor, it is necessary to replace the
ordinary brush plate with the needle plate and add a cleaning pad for cleaning, which
can effectively protect the ground from wear and tear. For installation, refer to "3.2
Brush plate replacement and installation" for operation.
2.2 The operation process of the machine
●Before the normal operation of the machine, make sure that the squeegee is
installed correctly, and the sewage suction pipe is inserted into the suction port.
1. Use the handle to lower the squeegee tripod;
2. Pass the squeegee fixing screw through the tripod eyelet and tighten the plastic
knob;
3. Insert the conical mouth of the suction pipe into the sewage hole of the water tank,
and insert the other end into the suction port of the squeegee.
Power display
After turning on the main power switch, the voltmeter will display the battery
voltage value. When the voltage is lower than 21V or the last bar is flashing, please
charge it first.
Start the machine
● Lightly step on the foot lever and put down the scrubbing brush;

X4
3
●By pulling the handle, put down the squeegee head;
●Open the water valve;
●Turn on the main power switch, start the brush plate switch button and the water
absorption motor switch button;
●Hold the handle tightly and keep driving at a constant speed. (Ordinary
paragraph)
●Turn on the speed control switch (note: the speed should not be too fast when
cleaning), lightly press the travel switch to keep the machine running smoothly.
(Self-propelled)
Stop of the machine
● Loosen the travel lever first; (this step is only for self-propelled drive models)
●Close the brush switch button;
●Close the drain valve;
●Close the switch button of the water suction motor;
●Turn off the main power switch;
● Lightly step on the foot lever to lift the scrubber;
●By pulling the handle, lift the squeegee head.
2.3 Precautions for machine operation
●Avoid stopping the machine for a long time in the same place and let the brush
clean; this will leave unnecessary marks on the ground.
●When cleaning the floor is epoxy floor, it is necessary to add a cleaning pad to
avoid the abrasion of the epoxy floor by the brush.
●The machine is filled with clean water, and attention should be paid to the clean
water, so as not to block the water discharge valve with impurities.
●After the machine works for a period of time, it is necessary to discharge the
sewage from the sewage tank in time to prevent the sewage from immersing in the
suction motor and causing it to burn.
●To clean the ground with serious oil pollution, please put an appropriate amount
of detergent in the clean water tank to achieve better cleaning effect, and at the same
time drop an appropriate amount of defoamer into the sewage tank to prevent the
sewage tank foam from immersing in the suction motor and causing burning.
●After each work is completed, please flush the sewage tank in time to keep the
machine well maintained.
●After the operation in winter, please drain the clean water tank in time to avoid
freezing and affect the reuse.
Sewage tank discharge sewage
●Turn off the main power to make sure the machine stops;
●Open the cover of the sewage pipe and discharge the water;
●The sewage tank can be properly rinsed with clean water.

X4
4
Machine storage and maintenance
●If the machine will not be used within 30 days, store the machine in a clean and
dry place and disconnect the battery connector.
Chapter 3 Routine Maintenance and
Disassembly and Replacement of
Wearing Parts
3.1 Periodic Inspection
Regular maintenance and inspection
Intervals（h）
4
50
100
200
500
1
Battery level detection
2
Motor carbon brush inspection
3
Whether the main brush is wired,
the silk is entangled
4
Check for debris in the tank
5
Check the buttons and electronics
on the control panel
6
Check the brush for wear
7
Check the filter for impurities
8
Check the sprinkler joint for leaks

X4
5
3.2 Brush disk replacement and installation
● Park the machine on a flat ground, turn off the main power switch, and ensure
that the machine is in a power-off state;
Lightly step on the foot lever to keep the brush disc lifted;
●For the direction of the brush plate, hold the brush, turn it to the right, and the
brush plate can be removed; rotate it to the left to complete the installation.
Note: When installing, make sure the flange is aligned with the brush plate button
holes.
●For the replacement of the dial, the dial can be purchased through our
company's business platform. The specific replacement is to place the cleaning pad at
the bottom of the dial and make it fit firmly with the dial. Please refer to the installation
of the dial on the machine. "Notice".
3.3 Replacement and installation of the absorbent strip
●Place the machine on a flat ground, turn off the main power switch, and ensure
that the machine is powered off.
●Put down the squeegee through the handle; after rotating the plastic handle in
the opposite direction, take out the squeegee assembly.
●Unscrew the squeegee assembly nut, remove the bottom plate of the squeegee
assembly, and remove the front and rear rubber strips of the squeegee.
●Install the squeegee blade.
1. Align the front rubber strip eyelets with the protrusions on the plastic squeegee
assembly

X4
6
2. Fasten the plastic components to the squeegee cast aluminum base plate
3. Align the eyelet of the rear rubber strip with the squeegee plastic assembly to the
protrusion;
4. Use the pressure strip to snap on both ends
5. Tighten the nut.
3.4 Battery Maintenance
The power system of this washing machine is powered by two 12V
maintenance-free lead-acid batteries in series, and the system voltage is 24V.
●When the machine works for a period of time, the battery power drops, and
when the last bar of the power display meter is flashing, it means that the power is
insufficient and needs to be charged in time;
●When maintaining the battery, please wear protective gloves to avoid contact
with the acid substance of the battery;
● Check whether the battery connecting wire is worn and the contact parts are
loose, and replace it if necessary;
●The terminal of the battery should be kept clean and dry, and there should be no
debris and dust covering it, which is extremely unfavorable to the battery, and will
burn the battery in severe cases.
! ! Notice
◆In order to make the battery have a long service life, it should be charged in
time after the machine is finished, and deep discharge is strictly prohibited.
◆The correct charging method of the lead-acid battery: first insert the battery,
then plug in the mains; when fully charged, first cut off the mains, and then pull out
the battery plug.
◆If the machine is not used for a long time, please fully charge the battery,
disconnect the positive pole of the battery, and store it.

X4
7
3.5 Maintenance and disassembly of suction motor
●After the daily use of the machine, please discharge the sewage from the
sewage tank in time to prevent the water level from being too high, being sucked into
the suction motor and burning the motor.
●During the use of the machine, if there is too much foam, it is recommended to
use a defoamer solution to prevent the foam from entering the filter screen and into
the suction motor, causing the motor to burn out.
●Removal of suction motor:
The suction motor is fixed at the bottom of the sewage tank. Before removing:
1. Empty the sewage tank first, turn off the main power switch, and keep the
machine powered off;
2. Turn the sewage tank sideways and pull out the suction motor pair socket;
3. Loosen the fixing nut of the suction motor and take out the suction motor.
●Installation of suction motor:
1. Align the mounting holes of the suction motor with the screw of the sewage
tank, and then tighten it with a non-slip nut;
2. The installation can be completed by plugging the suction motor pair socket
with the machine line.
3.6 Self-propelled drive controller diagnosis and
disassembly
●The first-generation self-propelled controller is located inside the clean water
tank; the X4 second-generation self-propelled controller is located inside the handle.
Rated voltage: 24V; Output current: 60A;
●During the use of the machine, when the machine does not move, you can use
a multimeter to measure the positive and negative poles of the power cord of the
controller to check whether there is any voltage. When it is determined that there is no
voltage, it can be judged that the controller is burned out.
Disassembly and assembly of the first-generation self-propelled X4 controller:
1. Turn off the main power supply to ensure that after the machine is powered off,
the sewage is drained and the sewage tank is turned over.
2. Loosen the positive and negative wiring of the power supply, and drive the
positive and negative wiring of the motor.
! ! Warn
During the use of the battery, the capacity of the deeply discharged battery will
decrease and the life span will be shortened.

X4
8
3. Use the M4 Allen wrench to loosen the fixing screws of the controller and the
iron plate to remove it.
(Note: When installing, the positive and negative wiring cannot be wrongly
connected)
Disassembly and assembly of the second-generation self-propelled controller:
1. Turn off the main power supply to ensure that after the machine is powered off,
the sewage is drained and the sewage tank is turned over.
2. Remove the handle iron plate fixing screws.
3. Loosen the positive and negative wiring of the power supply, and drive the
positive and negative wiring of the motor.
4. Use the M4 Allen wrench to loosen the fixing screws of the controller and the iron
plate to complete the removal.
(Note: When installing, the positive and negative wiring cannot be wrongly
connected)
3.7 Filter maintenance and removal
Chapter 4 Analysis Table of Common
Problems of Floor Scrubber

X4
9
Problem
Reason
Solution
Machine
doesn’t work
Battery dead
Charge
Battery failure
Replace the battery
Battery wiring loose
Tighten the battery wiring
Main fuse blown
better fuse
Brush motor
does not work
The brush head is lifted off the
ground
Lower the brush head
Brush disc motor circuit breaker
tripped
Reset brush circuit
breaker button
Main brush switch failure
Please contact the
service center
Motor carbon brush wear
Please contact the
service center
fan not working
Suction motor noise is too loud
Please contact the
service center
Suction motor burned out
Replace the suction
motor
Carbon brush wear
Please contact the
service center
Little or no
water flow out
Clogged water tank drain valve or
water pipe
Clean or replace the
solution tank drain valve
Drain valve closed
Open the drain valve
Inefficient
recycling of
sewage
recovery tank full
Drain the recovery tank
Absorbent strip wear
Replace the absorbent
strip
Suction motor failure
Replace the suction
motor
Damaged recovery tank seal
Replace the seal
Shorter
working hours
The voltages of the two batteries
are not equal
Please contact the
service center
Battery charging failure
Repair or replace the
charger
Chapter 5 Maintenance

X4
10
Machine life and operational safety must be ensured by proper and routine
maintenance of the machine. The routine maintenance requirements are tabulated
below. Under suitable working conditions, the maintenance interval can be changed,
which must be determined by the professional responsible for the maintenance.
To perform maintenance operations, the machine must be stopped (remove the start
switch key), so please read the safety section of the manual carefully.
Conditions of Use
●Ambient temperature: -10℃～40℃
●The relative humidity of the air: 5%～70%
●No conductive dust, no explosion hazard environment
● An environment that does not contain gases or vapors that corrode metals
●Indoor use, ventilated, non-vibration environment, front and rear space at least
300mm
Maintenance schedule
Warranty
Warranty is not covered under the following conditions of use:
● Failure to perform maintenance in accordance with the maintenance manual may
result in mechanical damage or failure.
●The mechanical appearance or structure is obviously damaged due to improper
operation.
●Disassembly or modification not approved by the original factory.
●Damage due to weather or force majeure.
●More than 1 year of warranty or more than 1500 hours of use.
Maintenance operation
On
handover
Every10h
Every50h
Every100
h
Every200
h
Every500
h
Brush Disc Height Adjustment Check
Whether the brush plate is wired or
entangled
Squeegee Cleaning Complete
Inspection
Tank cover seal inspection
Screw and nut tightening inspection
Check the wear of the brush disc
Replacement of absorbent strips
Main brush and drive system motor
carbon brush inspection and
replacement

X4
11
Warranty card
Warranty Conditions
1. Within the day when the user purchases this product, the motor is guaranteed for
one year (more than 7 days from the date of purchase, no replacement, only
warranty);
2. Before using the equipment, you must understand the instructions and safety
instructions;
3. Man-made damage to the warranty parts will not be guaranteed within the
warranty;
4. During the warranty period, users who do not follow the operating instructions or
those who dismantle and repair by themselves will not be covered by the warranty (if
repair is required, a cost will be charged);
5. The buyer can go to the designated point of the seller for maintenance with the
invoice, or send the machine back to our company for repair (return freight and
insurance premiums are paid by themselves).
Name
Tell
Postal address
Bill No
Purchase time
Number
Product model
Date
Replace
Fault description

X4
1