Viper FANG 20 User manual

User Manual
Original instructions
FANG 20
FANG 20T
Company information:
www.vipercleaning.eu
[email protected]
82089E (1) – 2012-04-10

82089E (1) – 2012-04-10 FANG 20 / FANG 20T 3
USER MANUAL ENGLISH
TABLE OF CONTENTS
INTRODUCTION.............................................................................................................................................................. 4
MANUAL PURPOSE AND CONTENTS .......................................................................................................................................... 4
TARGET........................................................................................................................................................................................... 4
HOW TO KEEP THIS MANUAL....................................................................................................................................................... 4
DECLARATION OF CONFORMITY ................................................................................................................................................ 4
IDENTIFICATION DATA................................................................................................................................................................... 4
OTHER REFERENCE MANUALS................................................................................................................................................... 4
SPARE PARTS AND MAINTENANCE............................................................................................................................................. 4
CHANGES AND IMPROVEMENTS ................................................................................................................................................ 4
PURPOSE AND INTENDED USE ................................................................................................................................................... 4
CONVENTIONS .............................................................................................................................................................................. 5
UNPACKING/DELIVERY ................................................................................................................................................. 5
SAFETY ........................................................................................................................................................................... 5
SYMBOLS USED TO MARK INSTRUCTIONS ............................................................................................................................... 5
GENERAL INSTRUCTIONS............................................................................................................................................................ 5
MACHINE DESCRIPTION ............................................................................................................................................... 9
MACHINE STRUCTURE ................................................................................................................................................................. 9
ACCESSORIES/OPTIONS ........................................................................................................................................................... 10
WIRING DIAGRAM (FANG20-EU) .................................................................................................................................................11
WIRING DIAGRAM (FANG20T-EU ) ............................................................................................................................................. 12
OPERATION .................................................................................................................................................................. 13
BEFORE STARTING THE MACHINE ........................................................................................................................................... 13
WHILE OPERATING MACHINE .................................................................................................................................................... 17
MAINTENANCE............................................................................................................................................................. 18
DAILY MAINTENANCE.................................................................................................................................................................. 18
WEEKLY MAINTENANCE ............................................................................................................................................................. 19
MONTHLY MAINTENANCE .......................................................................................................................................................... 19
VACUUM SYSTEM MOTOR FILTER CLEANING......................................................................................................................... 19
SOLUTION/CLEAN WATER FILTER CLEANING ......................................................................................................................... 19
SQUEEGEE BLADE CHECK AND REPLACEMENT ................................................................................................................... 20
BRUSH/PAD CLEANING .............................................................................................................................................................. 20
TROBLESHOOTING...................................................................................................................................................... 20
STORAGE...................................................................................................................................................................... 21
RECYCLING THE CLEANER........................................................................................................................................ 21

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INTRODUCTION
NOTE
The numbers in brackets refer to the components shown in Machine Description chapter.
MANUAL PURPOSE AND CONTENTS
The purpose of this Manual is to provide the operator with all necessary information to use the machine properly, in a safe and au-
tonomous way. It contains information about technical data, safety, operation, storage, maintenance, spare parts and disposal. Before
performing any procedure on the machine, the operators and qualified technicians must read this manual carefully. Contact Viper in
case of doubts concerning the interpretation of the instructions and for any further information.
TARGET
This manual is intended for operators and technicians qualified to perform the machine maintenance.
The operators must not perform procedures reserved for qualified technicians. Viper will not be answerable for damages coming from
the non-observance of this prohibition.
HOW TO KEEP THIS MANUAL
The User Manual must be kept near the machine, inside an adequate case, away from liquids and other substances that can cause
damage to it.
DECLARATION OF CONFORMITY
The declaration of conformity, supplied with the machine, certifies the machine conformity with the law in force.
NOTE
Two copies of the original declaration of conformity are provided together with the machine documentation.
The CE-declaration is printed in the Quick Start Guide.
IDENTIFICATION DATA
The machine model and serial number are marked on the plate.
This information is useful when requiring machine spare parts. Use the following table to write down the machine identification data.
MACHINE model ...............................................................................
MACHINE serial number ...................................................................
OTHER REFERENCE MANUALS
−Service Manual (can be consulted at Viper Service Centers)
−Spare Parts List (see www.vipercleaning.eu)
SPARE PARTS AND MAINTENANCE
All necessary operating, maintenance and repair procedures must be performed out by qualified personnel or by Viper Service
Centers. Only original spare parts and accessories must be used. Contact Viper for service or to order spare parts and accessories,
specifying the machine model and serial number.
CHANGES AND IMPROVEMENTS
Viper constantly improves its products and reserves the right to make changes and improvements at its discretion without being
obliged to apply such benefits to the machines that were previously sold.
Any change and/or addition of accessories must be approved and performed by Viper.
PURPOSE AND INTENDED USE
All automatic cleaning machines are exclusively intended for the wet cleaning of water-resistant oor coverings in building interiors.
The automatic cleaning machines cannot be used for fitted carpet and carpet cleaning.
This appliance is suitable for commercial use, for example in hotels, schools, hospitals, factories, shops, offices and rental businesses.
Any other use is considered as improper use. The manufacturer accepts no liability for any damage resulting from such use. The risk for
such use is borne solely by the user.
Proper use also includes proper operation, servicing and repairs as specified by the manufacturer.

82089E (1) – 2012-04-10 FANG 20 / FANG 20T 5
USER MANUAL ENGLISH
Changes made to the automatic machines by the users themselves rule out the liability of the manufacturer for any resultant damage.
Floor coverings are to be checked with regard to the suitability of this cleaning method before the use of the machine!
Note the surface pressure in the case of point-elastic oors, e.g. in gymnasiums!
The manufacturer accepts no liability for damage to the machine and the oor covering to be cleaned which is caused by the use of
the wrong brushes and cleaning agents.
CONVENTIONS
Forward, backward, front, rear, left or right and up are intended with reference to the operator’s position, that is to say in working
position.
UNPACKING/DELIVERY
To unpack the machine, carefully follow the instructions on the packing.
When the machine is delivered, check that the packing and the machine were not damaged during transportation. In case of visible
damages, keep the packing and have it checked by the carrier that delivered it. Call the carrier immediately to fill in a damage claim.
Check contents of package to ensure that the following items are included:
−machine
−squeegee assembly
−brush driver (and pad driver)
SAFETY
The following symbols indicate potentially dangerous situations. Always read this information carefully and take all necessary precau-
tions to safeguard people and property.
The operator’s cooperation is essential in order to prevent injury. No accident prevention program is effective without the total coop-
eration of the person responsible for the machine operation. Most of the accidents that may occur in a factory, while working or moving
around, are caused by failure to comply with the simplest rules for exercising prudence. A careful and prudent operator is the best
guarantee against accidents and is essential for successful completion of any prevention program.
SYMBOLS USED TO MARK INSTRUCTIONS
DANGER!
Danger that leads directly to serious or irreversible injuries, or even death.
WARNING!
Danger that can lead to serious injuries or even death.
CAUTION!
Danger that can lead to minor injuries and damage.
NOTE
Indicates a remark related to important or useful functions.
GENERAL INSTRUCTIONS
Specific warnings and cautions to inform about potential damages to people and machine are shown below.
The appliance must
−only be used by persons, who have been instructed in its correct usage and explicitly commissioned with the task of operating
it
−only be operated under supervision
−not be used by children
The workplace is behind the cleaner.
Do not use any unsafe work techniques.
Always guide the cleaner with both hands on the handle.
When the cleaner is stationary, switch off the brush unit immediately to prevent damage to the oor covering.
Switch off the appliance and disconnect the battery plug in the following situations:
−Prior to cleaning and servicing
−Prior to replacing components
−Prior to changing over the appliance

6 FANG 20 / FANG 20T 82089E (1) – 2012-04-10
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Use of the cleaner is subject to current national regulations. Besides the operating instructions and binding accident prevention regu-
lations valid in the country of use, observe recognized regulations for safe and proper work.
TRANSPORT
When transporting the cleaner in elevators
−observe current safety regulations, in particular with regard to carrying capacity.
OPERATION
In order to prevent unauthorized use of the appliance, the power source is to be switched off or locked, for example, by removing the
key of the power switch.
Take all necessary precautions to prevent hair, jewels and loose clothes from being caught by the machine moving parts.
Before using the machine, close all doors and/or covers.
The machine working temperature must be between 0°C and +40°C.
The humidity must be between 30% and 95%.
Do not use the machine as a means of transport.
In case of fire, use a powder fire extinguisher, not a water one.
Do not tamper with the machine safety guards and follow the ordinary maintenance instructions scrupulously.
Do not allow any object to enter into the openings. Do not use the machine if the openings are clogged. Always keep the openings
free from dust, hairs and any other foreign material which could reduce the air ow.
Do not remove or modify the plates affixed to the machine.
If the machine is used according to the instructions, the vibrations are not dangerous. The machine vibration level is less than 2.5 m/s2
(98/37/EEC-EN 1033/1995).
The Hand/arm vibration levels are well below 2,5 m/s2(measured according to ISO 5349), which is the limit for an 8 hour continuous
working period.
This machine must not be used on roads or public streets.
Viper machines can be used in combination with standard detergents which cannot damage any materials of Viper machines (no
use of solvents or other aggressive liquid materials). Viper will not pay any claims regarding using aggressive detergents in Viper
machines. If you need a special detergent for cleaning purposes, please contact your Viper dealer.
Pay attention during machine transportation when temperature is below freezing point. The water in the tank or in the hoses could
freeze and seriously damage the machine.
MAINTENANCE
To ensure machine proper and safe operation, the scheduled maintenance shown in the relevant chapter of this manual, must be
performed by the authorised personnel or by Viper Service Center.
Carefully read all the instructions before performing any maintenance/repair procedure.
Do not work under the lifted machine without supporting it with safety stands.
Do not wash the machine with direct or pressurised water jets, or with corrosive substances.
GUARANTEE
Our general conditions of business are applicable with regard to the guarantee.
Unauthorised modifications to the appliance, the use of incorrect brushes and detergents in addition to using the appliance in a way
other than for the intended purpose exempt the manufacturer from any liability for the resulting damage.
TESTS AND APPROVALS
Electrical tests must be performed in accordance with the provisions of safety regulations (BGV A3) and to DIN VDE 0701 Part 1 and Part 3.
In accordance with DIN VDE 0702 these tests must be performed at regular intervals and after repairs or modifications.

82089E (1) – 2012-04-10 FANG 20 / FANG 20T 7
USER MANUAL ENGLISH
ELECTRICAL COMPONENTS
DANGER
Batteries.
Risk of explosion.
Battery charging produces highly explosive hydrogen gas. Keep the tank assembly open during battery charging and
perform this procedure in well-ventilated areas and away from naked ames.
To reduce the risk of fire, electric shock, or injury, do not leave the machine unattended when it is plugged in. Before
performing any maintenance procedure, disconnect the battery charger cable from the electrical mains.
Do not smoke while charging the batteries.
The use of non-genuine spare parts, accessories, batteries and chargers can impair the safety of the appliance. Only
use spare parts and accessories from Viper and use batteries and chargers which VIPER recommend. When using
non-certified and not recommended batteries and chargers, VIPER will not cover the cost of damages (warranty)
caused of this.
CAUTION
Battery charger.
Electric shock due to faulty mains connecting lead or charger cable.
Touching a faulty mains connecting lead or charger cable can result in serious or even fatal injuries.
Keep the battery away from sparks, ames and incandescent material. During the normal operation explosive gases
are released.
Before using the battery charger, ensure that frequency and voltage values, indicated on the machine serial number
plate, match the electrical mains voltage.
Do not damage the mains power lead (e.g. by driving over it, pulling or crushing it).
Regularly check whether the power cord is damaged or shows signs of ageing.
Have the faulty mains connecting lead replaced by your Viper service representative or a qualified electrician prior
to using the appliance again.
Do not pull or carry the machine by the battery charger cable and never use the battery charger cable as a handle.
Do not close a door on the battery charger cable, or pull the battery charger cable around sharp edges or corners.
Keep the battery charger cable away from heated surfaces.
Do not charge the batteries if the battery charger cable or the plug are damaged. If the machine is not working as it
should, has been damaged, left outdoors or dropped into water, return it to the Service Center.
STAIRS AND GRADIENTS
CAUTION
Risk of tipping and slipping on stairs and gradients.
When negotiating stairs and gradients, there is a risk of personal injuries and damage to property.
Do not negotiate steps.
Only use the appliance on level surfaces with a maximum gradient of 2 %.
FLOOR COVERINGS
CAUTION
Damage to sensitive oor coverings.
Particularly sensitive oor coverings can be damaged by cleaning.
Before using the cleaner, check whether oor coverings are suitable for this cleaning technique.
Beware of area compression in point-elastic oors, e.g. in gym halls.
Only use cleaning agents approved by Viper.
MATERIALS HAZARDOUS TO HEALTH
WARNING
Materials hazardous to health in oor coverings.
Floor coverings can contain materials that are hazardous to health, which dissolve during cleaning.
Do not clean oor coverings from which dusts or liquids that are hazardous to health can dissolve.
RISK OF EXPLOSION
WARNING
Flammable and explosive materials.
Risk of explosion in explosive atmosphere or areas where ammable and explosive materials are stored.
Do not operate the machine near dangerous, ammable and/or explosive powders, liquids or vapours.

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SPARE PARTS AND ACCESSORIES
CAUTION
Non-genuine components and unsuitable detergents.
The use of non-genuine parts and unsuitable detergents can impair the safety of the appliance and lead to damage.
Only use spare parts and accessories from Viper.
Only use the accessories and detergents supplied with the appliance or those specified in the operating instructions.

82089E (1) – 2012-04-10 FANG 20 / FANG 20T 9
USER MANUAL ENGLISH
MACHINE DESCRIPTION
MACHINE STRUCTURE
(1) Vacuum ON/OFF switch
(2) Brush ON/OFF switch
(3) Battery level light
(4) Solution ON/OFF switch
(5) Solution control knob
(6) Recovery tank drain hose
(7) Squeegee assembly
(8) Brush lift foot pedal
(9) Solution tank level sight tube
(10) Console adjustment levers
(11) Rear solution fill
(12) Circuit breakers
(13) Squeegee lift lever
(14) Control housing
(15) Solution tank
(16) Transport wheels
(17) Scrub head
(18) Scrub head skirt
(19) Protective rollers
(20) Front solution fill
(21) Recovery tank
(22) Recovery tank lid
(23) Operating triggers
(24) Main power ON/OFF switch
(25) Reverse switch
(26) Speed control knob
(27) Name plate/technical data
(28) Key switch
(29) Squeegee vacuum hose
(30) Squeegee adjustment nut & shaft
(31) Squeegee mounting handwheel

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ENGLISH USER MANUAL
ACCESSORIES/OPTIONS
In addition to the standard components, the machine can be equipped with the following accessories/options, according to the ma-
chine specific use:
• Brush
• Pad driver
For further information concerning the optional accessories, contact an authorised retailer.
TECHNICAL DATA
Model
FANG 20-EU
(1 brush/pad-holder, without drive
system)
FANG 20T-EU
(1 brush/pad-holder, with drive
system)
Machine height mm 990
Solution/clean water tank capacity l 50
Recovery water tank capacity l 57
Front wheel diameter mm 76
Front and rear wheel specific pressure on the oor N/mm² 0.9 – 3
Rear wheel diameter mm 200
Vacuum system motor power W 353
Drive system motor power W — 250
Drive speed (variable) km/h — 0 – 4.5
Gradeability % 2
Sound pressure level at workstation dB(A) 68
Standard batteries Ah @ 20 h (2 x 12 V) 95 - 125
Battery compartment size (length x width x height) mm 340 x 345 x 300
Vacuum system circuit capacity mm H2O 1,200
Cleaning width mm 508
Squeegee width mm 712
Machine maximum length mm 1,300
Machine width without squeegee mm 560
Brush diameter mm 508
Weight without batteries and with empty tanks kg 86 92
Maximum weight with batteries and full tanks kg 200 206
Brush motor power W 560
Brush speed rpm 200
Brush/pad-holder pressure with extra-pressure
function turned off kg 19.0 20.5
Brush/pad-holder pressure with extra-pressure
function turned on kg 30 30

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USER MANUAL ENGLISH
WIRING DIAGRAM (FANG20-EU)
(16AWG WHT)
BATTERY CAPACITY
LIGHTS
3
(16AWG BLU) 0
(16AWG GRN)
(16AWG WHT)
(16AWG BLU)
(12AWG RED)
(6AWG RED)
4
6
9
0
(6AWG RED)
12V BATTERY
12V BATTERY
(6AWG BLK)
(6AWG RED)
7
BRUSH SOLENOID
1
(12AWG RED)
(16AWG WHT)
7
1
35AMP
BRUSH
CIRCUIT
BREAKER
(12AWG RED)
VACUUM
SWITCH
2
BRUSH
SWITCH
VACUUM
MOTOR
BRUSH
MOTOR
CHARGER
PLUG
(6AWG BLK)
10 (14AWG RED)
9 (12AWG RED)
0
(14AWG BLK) 03
(12AWG BLK) 02
SOLUTION SOLENOID
4 (16AWG GRN)
SWITCH
34
(16AWG GRN) 01
SOLUTION
TRIGGER
SWITCH
(16AWG WHT)
8
B


B
BATTERY CAPACITY
CONTROL BOARD
KEY SWITCH
MAIN
CIRCUIT
BREAKER
11
(16AWG WHT)
10 (14AWG RED)
5
VACUUM
BREAKER
35AMP
5
(14AWG RED)
(16AWG WHT)
6(16AWG BLU) 0
12AMP
SOLENOID
VACUUM
WIRING DIAGRAM FOR FANG 20
Rev.: B

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WIRING DIAGRAM (FANG20T-EU )
BATTERY insert translation SOLUTION SWITCH insert translation
BATTERY CAPACITY
CONTROL BOARD
insert translation SPEED CONTROL
BOARD
insert translation

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USER MANUAL ENGLISH
BATTERY CAPACITY
LIGHTS
insert translation TRIGGER SWITCH insert translation
BRUSH CIRCUIT BREAKER insert translation VACUUM BREAKER insert translation
BRUSH MOTOR insert translation VACUUM CIRCUIT
BREAKER
insert translation
BRUSH SOLENOID insert translation VACUUM MOTOR insert translation
BRUSH SWITCH insert translation VACUUM SOLENOID insert translation
CHARGER PLUG insert translation VACUUM SWITCH insert translation
DIRECTION SWITCH insert translation BLK insert translation
DRIVE MOTOR insert translation BLU insert translation
KEY SWITCH insert translation GRN insert translation
MAIN CIRCUIT BREAKER insert translation G/Y insert translation
MAIN SOLENOID insert translation RED insert translation
MAIN SWITCH insert translation WHT insert translation
SOLUTION SOLENOID insert translation
OPERATION
BEFORE STARTING THE MACHINE
WARNING!
On some points of the machine there are some adhesive plates indicating:
DANGER
WARNING
CAUTION
CONSULTATION
While reading this Manual, the operator must pay careful attention to the symbols shown on the plates. Do not cover these plates for
any reason and immediately replace them if damaged.
BATTERY INSTALLATION
WARNING!
The electric components of the machine can be seriously damaged if the batteries are either improperly installed or
connected. The batteries must be installed by qualified personnel only.
Set the function electronic board and the battery charger (optional) according to the type of batteries used (WET or
GEL).
Check the batteries for damage before installation.
Disconnect the battery connector and the battery charger plug.
Handle the batteries with great care.
Install the battery terminal protection caps supplied with the machine.
The machine requires two 12 V batteries, connected according to the below diagram:
There are no batteries on the machine from factory, but customers can purchase batteries ( WET or GEL).
Buy appropriate batteries (see Technical Data paragraph).
For battery choice and installation, apply to qualified battery dealers.
Set the machine and the battery charger according to the type of batteries installed (WET or GEL) as shown in the following para-
graph.

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a) When batteries (WET or GEL) are already installed and ready to be used
Check that the batteries are connected to the machine with the charger plug.
Insert the ignition key (28) and turn it to “on”.
If the green warning light (3) turns on, the batteries are ready to be used.
If the yellow or red warning light (3) turns on, the batteri es must be charged (see the procedure in Maintenance chapter).
b) When batteries (WET) are installed on the machine, but without electrolyte
Open the cover (22) and check that the recovery water tank (21) is empty, otherwise empty it with the drain hose (6).
Carefully lift the tank (21).
WARNING!
Pay attention when using sulphuric acid, as it is corrosive. If it comes in contact with skin or eyes, rinse thoroughly with
water and consult a physician.
Batteries have to be filled in a well-ventilated area. Wear protective gloves.
Fill up the battery cells with sulphuric acid for batteries (density 1.27 to 1.29 kg at 25°C) in accordance with the instructions shown
in the Battery Manual. The correct quantity of sulphuric acid is shown in the Battery Manual.
To avoid damaging the oor, dry with a cloth both acid and water on the top of the batteries after charging.
Let the batteries rest and fill in with sulphuric acid in accordance with the instructions shown in the Battery Manual.
Charge the batteries (see the procedure in Maintenance chapter).
BATTERY CHARGER SETTING
The charger default setting is common position for AGM,Gel,SLA,VRLA from factory
If needed use WET position only for lead batteries. Please contact dealer.
PRE-OPERATION CHECKS
Sweep the outside of the machine.
Make sure the voltage of machine conforms to local voltage.
Check that squeegee is properly installed.
Check that brush / pad is properly installed.
INSTALLING PAD DRIVER OR BRUSH
Ensure that the machine is turned off.
Lower brush head assembly to the oor by stepping on the foot pedal and pushing pedal forward.
Tilt the machine backward to access the drive motor hub.
NOTE
Remove the squeegee assembly prior to tilting the machine backwards. It makes the process faster and easier.
WARNING!
Do not keep the machine tilted back for a long time. This could cause battery acid to leak from the batteries.
If using a pad driver, first attach the appropriate pad to the pad driver surface.
Mount the pad driver or brush to the drive motor hub by lining up the three studs with the three holes in the drive motor hub. Once
in the holes, rotate the driver toward the spring clip to lock driver into place.
MOUNTING THE SQUEEGEE
Pull back on the squeegee lift lever to raise the squeegee bracket up.
Loosen the two knobs on the squeegee and slide the squeegee into the slots at the rear of the squeegee bracket. (the wheels on
the squeegee point to the back)

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Tighten the knobs securely.
FILLING THE SOLUTION TANK
The Fang 20-EU / Fang 20T-EU can be filled in two different locations:
a. Front fill area for use with a hose or a bucket.
b. Rear fill area for use with a hose only.
Determine which fill area you would like to use to fill the machine with water.
Fill solution tank with up to 48 liters of water. (water temperature should not exceed 40° C). The clear tube in the back left of the
machine has gallon markers to help determine the water level in the solution tank.
NOTE
If you are filling the solution tank with a bucket, make sure the bucket is clean. This will prevent debris from clogging
the lines or solenoid.
WARNING!
Do not put any ammable materials into solution tank. This can cause an explosion or a fire. Only use recommended
cleaning chemicals. Contact your janitorial supply distributor for recommendations on proper chemicals.
MACHINE START AND STOP
WARNING!
Do not operate machine unless you have read and understand this manual.
Set control housing to a comfortable operating height by squeezing together the two thumb levers (10) directly underneath the
housing.
Lower squeegee assembly to the oor by releasing the lift lever (13) from its locked position.
Lower brush head assembly to the oor by stepping on the foot pedal (8) and pushing pedal forward.
Turn main power switch (24) to “ON” position.
Turn brush motor switch (2) to “ON” position.
Turn vacuum motor switch (1) to “ON” position.
Turn the solution switch (4) to “ON” position.
a. Solution will not begin to ow until the operating triggers are pulled.
The Fang 20T-EU is self-propelled.The speed can be controlled by a knob (26) located on the right side of the control housing.
The Fang 20T-EU has reverse. In order to activate reverse,there is a toggle switch (25) located on the left side of the control hous-
ing.
To begin scrubbing, pull on one or both of the red operating triggers (23). When these triggers are pulled, the brush will begin to
spin and the solution will begin to ow. FANG 20T-EU: will propel itself. FANG 20-EU: Begin scrubbing by moving the machine
forward.
WARNING!
Do not keep the machine in the same position with the pad / brush spinning, or you could cause damage to the oor.
Adjust amount of solution ow by turning the solution control knob (5). Turn to the right for more solution, or turn left for less solu-
tion.
NOTE
For correct scrubbing/drying of oors at the sides of the walls, Viper suggests to go near the walls with the right side of
the machine as shown.

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CAUTION!
To avoid any damage to the oor surface, turn off the brush/pad-holder when the machine stops in one place, especially
when the extra pressure function is on.
SOLUTION FLOW ADJUSTMENT
Turn the solution switch (A) to “ON” position.
Adjust amount of solution ow by turning the solution control knob (B), turn left (counter-clockwise) for more solution, or Turn right
(clockwise) for less solution. The pin (C) is limit position of the solution control knob (B).
NOTE
Even if turn on the solution switch (A) ,the solution will not begin to ow until the operating triggers (D) are pulled.
BATTERY DISCHARGE DURING OPERATION
Until the green warning light (3) stays on, the batteries allow the machine to work normally.
When the green warning light (3) turns off, and the yellow warning light (3) turns on, it is advisable to charge the batteries, because
the residual autonomy will last for a few minutes (depending on battery characteristics and work to be performed).
When the red warning light (3) turns on, the autonomy is over. After a few seconds, the brush/pad-holder is automatically tuned off,
while the vacuum system and the drive system stay on, to finish drying the oor and drive the machine to the appointed recharging
area.

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CAUTION!
Do not use the machine with discharged batteries, to avoid damaging the batteries and reducing the battery life.
WHILE OPERATING MACHINE
Occasionally look through the clear recovery tank lid to see if there is any foam build-up. If excessive foam is found, add defoamer
to the recovery tank.
WARNING!
Foam must not enter the oat shut-off screen, or damage can occur to the vacuum motor. Foam will not activate the
machines oat shut-off device.
Occasionally view the clear tube at the back left of the machine to check the amount of cleaning solution that is left in the machine.
Occasionally check the battery level meter (3). When meter is in the red, recharge the batteries.
WARNING!
When battery meter is in the red, do not continue to operate the machine. Battery damage may result.
If the squeegee assembly leaves streaks on the oor, raise the squeegee off the oor and wipe the blades down with a damp cloth.
WARNING!
Do not use your fingers to wipe or remove debris from the blades, as injury may occur.
When the solution tank runs empty, turn off the brush switch, solution switch and raise the brush head. Keep the squeegee down
and continue to vacuum until all the dirty water is picked up. (see TANK DRAINING section to learn how to drain recovery and
solution tanks)
NOTE
The brush motor is circuit breaker protected to protect it from damage. If this breaker trips, it can’t be reset immediately.
You must first determine what caused the circuit breaker to trip, and allow the motor to cool down before you can reset
the circuit breaker.
TANK DRAINING
Turn the power off on the machine.
With the squeegee and brush head in their “up” position, transport machine to approved area for draining tank(s).
DRAINING THE RECOVERY (DIRTY) TANK
NOTE
Any time scrubbing is completed, or when refilling solution tank, the recovery tank should be drained and cleaned.
WARNING!
If the recovery tank is not drained when the solution tank has been refilled, foam or water may enter the oat shut-off
mechanism and cause damage to the vacuum motor.
Remove the drain hose from the holder, and place the drain hose over the oor drain. Twist off the drain hose plug to begin the
draining process. In order to completely empty the recovery tank, hinge opens the recovery tank and let it rest on the support stand.
Clean the recovery tank after every use. Use a fresh water hose to rinse out the recovery tank. Be careful not to spray water into
the oat shut-off mechanism.
NOTE
If you are storing the machine for any period of time, always leave the clear recovery tank lid off the tank so the tank
can dry completely and smell fresh.
Replace the drain hose plug tightly as soon as you are done draining the tank.
DRAINING THE SOLUTION (CLEAN) TANK
NOTE
Any time scrubbing operation is completed, the solution tank should be drained and cleaned.
Pull down on the clear tube (back left of the machine) to remove it from the hose barb. This will allow the solution to ow freely into
a bucket or oor drain.
Rinse the solution tank with clean water after every use. This will help prevent chemical buildup and clogging of the solution lines.
With clean water in solution tank, turn machine power on, solution switch “on” and pull the operating triggers. This will allow the
clean water to ush through and clean the solution plumbing.
Once tank is rinsed, ushed and drained, reconnect the clear tube to the hose barb. Be sure the tube is pushed all the way up on

18 FANG 20 / FANG 20T 82089E (1) – 2012-04-10
ENGLISH USER MANUAL
the hose barb.
BATTERY CHARGING
NOTE
For the best machine performance, keep batteries charged at all times. Do not let them sit in a discharged condition.
NOTE
If the machine has an optional battery charger installed, the machine cannot operate if the charger is not on board. In
case of battery charger malfunction, contact an authorised Service Center.
CAUTION!
Use only approved chargers with the following specifications:
• Automatic shut off circuit
• Deep cycle charging
• Output current of 10-20 Amps
• Output voltage of 24 Volts
CAUTION!
Batteries are dangerous! Batteries emit hydrogen gas and an explosion or fire can result. Keep sparks and fire away
from batteries at all times. When charging the machine, make sure the battery compartment is left open.
Place charge and machine in a well ventilated area.
Turn machine off.
Open recovery tank up, exposing battery compartment .
Check uid level in each battery cell. Do not charge batteries unless uid is slightly covering the battery plates. Do not overfill the
batters. Overfilling may cause the batteries to overow during charging due to expansion. Replace the caps prior to charging.
Plug approved charger into grounded wall out let before plugging the charger into the machine.
Plug charger into red charger receptacle located in the front left of the battery compartment.
Flip up the recovery tank “Kick stand” and gently lay the recovery tank down until it rests on the stand.
The battery charger will automatically begin to charge the batteries, and it will automatically shut down once the batteries are fully
charged.
Upon completion of charging, first unplug the charger from the wall outlet, and then disconnect the charger from the machine.
Check the battery level after charging is complete. If uid level is low, add distilled water to bring the uid level up to the bottom of
the sight tubes. Replace the caps and wipe the batteries down with a towel.
MAINTENANCE
To keep the machine performing well for many years, please follow the following maintenance procedures.
CAUTION!
Always confirm that the machine is switched off and the battery cable is disconnected prior to performing any mainte-
nance or repairs.
DAILY MAINTENANCE
Remove pad driver / brush and clean with approved cleaner.
Drain recovery and solution tanks completely and rinse out with clean water. Visually check the recovery tank for debris and clean
out as necessary.

82089E (1) – 2012-04-10 FANG 20 / FANG 20T 19
USER MANUAL ENGLISH
Raise squeegee assembly off oor and wipe it down with a damp towel. Be sure to store the squeegee in the up position.
Remove the oat shut-off assembly and rinse it out with clean water.
Clean machine with an approved cleaner and a damp towel. Don’t spray water to clean the outside of machine to avoid damage
to motor and wiring.
Recharge batteries.
WEEKLY MAINTENANCE
Check uid level in batteries.
Check batteries for loose or corroded cables.
Keep battery tops clean from corrosion.
MONTHLY MAINTENANCE
Check machine for leaks and loose fasteners.
Lubricate all grease points and pivot points with silicon spray and approved grease.
Place machine over a oor drain. Flush solution system by pouring 10 liters of hot water and approved alkaline detergent into the
solution tank and running machine (with solution control on) for 45 seconds. Turn machine off and let it sit overnight. Then next
day, drain the remaining solution and rinse the solution tank out with clean water.
VACUUM SYSTEM MOTOR FILTER CLEANING
Drive the machine on a level oor.
Turn the ignition key (28) to “0”.
Open the recovery water tank.
If necessary, drain the water from the tank in order to make the filter visible.
Check that the pre-filter is clean. If necessary clean it with water and compressed air, then install it.
Perform steps 1, 2 and 3 in the reverse order.
SOLUTION/CLEAN WATER FILTER CLEANING
Drive the machine on a level oor.
Turn the ignition key (28) to “0”.
Remove the transparent cover (D) (the water filter position is under the machine), then remove the filter strainer (B). Clean and
install them on the support (A).
NOTE
The filter strainer (B) must be correctly positioned on the housing (E) of the support (A).

20 FANG 20 / FANG 20T 82089E (1) – 2012-04-10
ENGLISH USER MANUAL
SQUEEGEE BLADE CHECK AND REPLACEMENT
Clean the squeegee as shown in the previous paragraph.
Check that the edge (M) of the front blade (D) and the edge (L) of the rear blade (E) lay down on the same level, along their length;
otherwise adjust their height according to the following procedure:
−Disengage the retainers (A) to adjust the rear blade (E); then engage the retainers.
−Loosen the handwheels (G) and adjust the front blade (D); then tighten the handwheels.
Check the front blade (D) and rear blade (E) for integrity, cuts and tears; if necessary replace them as shown below. Check
that the front corner (N) of the rear blade is not worn; otherwise, overturn the blade to replace the worn corner with an integral one.
If the other corners are worn too, replace the blade according to the following procedure:
−Disengage the retainers (A) and remove the retaining strip (B), then replace/overturn the rear blade (E). Install the blade in the
reverse order of removal.
−Unscrew the handwheels (G) and remove the retaining strip (H), then replace the front blade (D). Install the blade in the re-
verse order of removal.
After the blade replacement (or overturning), adjust the height as shown in the previous step.
Connect the vacuum hose (29) to the squeegee.
Install the squeegee (7) and screw down the handwheels (31).
If necessary, adjust the squeegee adjusting handwheel (30).
BRUSH/PAD CLEANING
CAUTION!
Risk of cuts.
It is advisable to wear protective gloves when cleaning the brush/pad because there may be sharp debris.
Remove the brush/pad from the machine, as shown in Use chapter.
Clean and wash the brush/pad with water and detergent.
Check that the brush/pad is integral and not excessively worn; otherwise replace it.
TROBLESHOOTING
PROBLEM CAUSE SOLUTION
No power Bad batteries Replace batteries
Batteries need to be charged Charge batteries (see Battery Charging)
Loose battery cable Tighten loose cable(s)
Batteries not connected properly Follow battery installation instructions