Duplex 280i AC User manual

InstructionManual
Use and Maintenance
FLOOR WASHER / CARPET
CLEANER DUPLEX 280i AC
DUPLEX 280i DC
Translation of original instructions

WARNINGS
CAREFULLY READ THE INSTRUCTIONS OF THIS
BOOKLET BEFORE USING THE MACHINE.
See Directive ISO 7000-0434-1691-0790
WARNING: This appliance cannot be used to collect hazardous dusts

DUPLEX 280i
TABLE OF CONTENTS
1.1 Congratulations on having chosen DUPLEX 280i machines. 5
1.2 GENERAL WARNINGS 6
POWER CORD WITH PLUG ..................................................................................................................6
AVOIDANY CONTACT OF THE POWER CORD WITH BRUSHES.......................................................6
OTHER WARNINGS...............................................................................................................................6
1.3 DISTINCTIVE FEATURES AND COMPETITIVE ADVANTAGES OF DUPLEX 280i 7
1.4 TIPS FOR CLEANING FLOORS 10
CLEANING CARPETS OR RUGS.........................................................................................................10
CLEANING WOOD PARQUET...................................................................................................................10
CLEANING ALL TYPES OF FLOORING ..............................................................................................10
CLEANING HEAVILYDIRTY,HARD OR DINGY FLOORS...................................................................10
CLEANING FLOORING WITH WAX CLEANERS.................................................................................11
WAX CLEANER “SHINY EFFECT” .......................................................................................................11
POLISHING WAXED FLOORS.............................................................................................................11
SOAKING/WASHING HEAVILYDIRTY FLOORING .............................................................................12
1.5 TRANSPORT 13
1.6 TECHNICAL FEATURES 14
1.7 ASSEMBLING THE HANDLE 16
1.8 LOADING THE WASHING LIQUID 17
1.9 HOW TO USE 18
MACHINE START-UP....................................................................................................................................... 18
LOADING LITHIUM ION BATTERY................................................................................................................ 19
BATTERY CHARGER............................................................................................................................20
FITTING THE BATTERY TO THE MACHINE........................................................................................20
SUPPORT TRIPOD AND FOR BRUSH PROTECTION .......................................................................22
MOTOR PROTECTOR..........................................................................................................................22
1.10 HOW TO WASH FLOORS 23
STAGE 1................................................................................................................................................23
STAGE 2................................................................................................................................................23
1.11 Cleaning and maintenance of the brushes 24
BRUSH MAINTENANCE:......................................................................................................................25
BRUSH DEFORMATION............................................................................................................................25
1.12 CLEANING THE MACHINE 26

DUPLEX 280i
1.13 TROUBLESHOOTING TIPS 27
WET STRIPES ON THE SIDES............................................................................................................27
LIQUID FLOWS CONTINUOUSLY............................................................................................................27
THE DIRT IS NOT PICKED UP.............................................................................................................27
DOES NOT START UP .........................................................................................................................27
DUPLEX 280I AC ..................................................................................................................................28
BATTERY DUPLEX 280I DC.................................................................................................................28
VIBRATION DURING CLEANING.........................................................................................................28
1.14 WARRANTY 29
1.15 DISPOSAL AND WASTE SEPARATION 30
DISPOSAL OF LITHIUM ION BATTERIES...............................................................................................30
1.16 LITHIUM ION BATTERY (DUPLEX 280i DC) 31
FOREWARD..........................................................................................................................................31
PRECAUTIONS.....................................................................................................................................31
PARKING THE MACHINE WITH BATTERY..................................................................................................31
REPLACING OR DISPOSING OF THE BATTERY.......................................................................................31
IMPORTANT SAFETY NOTES .............................................................................................................32
BRIEF HISTORY OF LITHIUM ION BATTERIES.....................................................................................32

DUPLEX 280i
5
1.1 Congratulations on having chosen DUPLEX 280i machines.
The new DUPLEX 280i floor washing machine has a great performance and is highly efficient.
DUPLEX280i washesanykind offloorincluding:woodparquet,carpetsandrugs.Itsweepsand
disinfects thoroughly, cleaning even the most hard to reach corners by means of its cantilever
brushes.
DUPLEX 280iAC and lithium ion battery DUPLEX 280i DC have an aluminium casing toensure
each part is protected and has a tight seal against the infiltration of water, dust or other foreign
bodies.
DUPLEX 280i is easy to use and to carry from one place to the other as it weighs only 13 kg,
it takes up very little room and is easy to store.
The handle position can be reversed to allow bi-directional cleaning. The operator can clean
in both directions and perform cleaning and washing from right to left, forward and backward
and vice versa.
DUPLEX 280i's ease of handling and lightness make it pleasant and easy to use.
DUPLEX 280i's construction qualities allow for a long lifespan.
We recommend you to closely follow the instruction for use and maintenance of the
machine.
Theoriginalbi-directionalhandleallowsyouto
reverse the work position to clean and wash
floorsandcarpetsthoroughlyinbothdirections
and from right to left.
Figure 1.1

DUPLEX 280i
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1.2 GENERAL WARNINGS
POWER CORD WITH PLUG
•Check the power cord regularly to see if there is any sign of damage:
•If the power cord is damaged, replace it before using the machine.
•Use a cable of the same type used by the Manufacturer, certified according to “ENEC”
European standards
•Cable replacement must be performed by qualified personnel.
AVOID ANY CONTACT OF THE POWER CORD WITH BRUSHES
•Should the power cord get caught under the machine brushes, do not attempt to get it out
with the machine working. Stop operation immediately, remove the plug from the power
socket, check the cord. If damaged, do not try to repair it simply putting a tape around it,
but replace it.
OTHER WARNINGS
•Ensure the machine does not sit on the brushes when in its rest position, but that it is
supported and raised by the tripod (Fig “1.15” - page 25).
If this not the case, the machine weight could warp the brushes.
•Do not pour water or liquids directly onto the machine.
•Unplug the power cord plug from the power socket or battery before any maintenance
intervention.
•Store the machine in a closed and dry place after use.
•The machine is designed and constructed exclusively to clean floors. Any other use is
considered improper.
WARNING
CLEANING AND MAINTENANCE OPERATIONS MUST BE PERFORMED
WITH THE MACHINE DISCONNECTED FROM THE MAINS OR BATTERY.

DUPLEX 280i
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1.3 DISTINCTIVE FEATURES AND COMPETITIVE ADVANTAGES OF
DUPLEX 280i
The DUPLEX brand name is synonymous with double efficiency and distinguishes a machine
that actually has a dual function thereby providing numerous advantages for the best possible
floor cleaning and hygiene.
•SMART BRUSHES
The unique smart brush system “patented” by DUPLEX allows the machine to reach more
easily into corners and along skirting boards of every surface.
•EASY-TO-DISASSEMBLEBRUSHES
The brushes are inserted with a patented "trigger fitting" which enables them to be removed
and replaced in just three seconds.
•OPTIONAL BRUSHES
They are provided for any type of floor and cleaning operation
•BI-DIRECTIONAL CLEANING SYSTEM
This system allows the work position to be reversed thanks to the bi-directional handle.
(see figure “1.1”, “1.10” and “1.13” ).
•DOUBLE WASHING SYSTEM
Two powerful brushes rotate in opposition at 3.75 mt/s, attacking dirt and trapping it with
their synergistic action and delivering it towards the two conveyor belts.
•DUAL DIRT COLLECTION SYSTEM
The patented conveyor belts which rotate quicklychannel the dirtdeposited ontheir surfaces
directly into the recovery tank.
•RECOVERY TANK
Situated conveniently in the middle of the machine and easy to remove. It is equipped with
two “scrapers” made of a special technopolymer, they are easy to replace and are needed
for the final collection of dirt.

DUPLEX 280i
8
•DOUBLE USE SYSTEM
Simultaneous washing and dirt recovery.
Soaking followed by dirt recovery.
•WATERAND DETERGENT TANK
Easy to remove and to refill under a water tap and to empty at the end of cleaning. This
system makes cleaning it easier.
•ADVANCED CONSTRUCTIVE TECHNOLOGIES
FortyyearsofactivityandmorethantwohundredthousandDUPLEXmachinesmanufactured
and sold worldwide, have allowed our Company to gain considerable experience, improving
our valuable and prestigious know-how.
Today, our know-how allows us to develop highly innovative technologies which find their
application in the design of the most cutting-edge floor cleaners, as happened recently in
the case of the new DUPLEX 280i.
Besides being able to clean perfectly any type of flooring by means of a new operational
concept, the DUPLEX 280i is equipped with a robust structure which can withstand heavy
useevenexceedingalloweduselimits,orinanycase,itcantackleanyinvoluntarydistraction
of the user.
It cleans easily every floor including rugs, fabric flooring, carpets, etc. It can easily pick up
fine or coarse dirt, any type of solid dirt (cigarette butts, paper sheets, sand, etc.). It cleans
and removes dirt from the most deep recesses of any type of floor, embossed, studded
rubber flooring, etc.
IndesigningtheDUPLEX280i,weaimedtocreateaperfectmachine.Eachofitscomponents
hasbeendesignedtoensuremaximumsafetyanddurability,withoutrequiringanymaintenance.
To this end a special pressure-diecast light alloy casing has been manufactured to enclose
all electrical parts and most sensitive mechanical gear drive parts in order for them to be
fully protected.
•ELECTRIC MOTOR
This motor has been made perfectly seal-tight by means of rubber seals on each closure
and its external part is treated by anAnodic and Galvanic procedure to make it rustproof.
•EASY-TO-USE AND PERFECT BALANCE
The motor's central position and the tank above give the machine a perfect balance.
The weight distributed equally on the brushes allows an efficient cleaning. It is particularly
easy to handle for whoever uses this machine.

DUPLEX 280i
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•TRANSPORTABILITY
The DUPLEX 280i AC weighs 13 kg.
The DUPLEX 280i DC plus Lithium Ion battery weighs only 12 kg.
TheDuplex280icanbecarriedeasilygivenitsreducedweight(13kgmax.),allowinganyone
to lift it. Moreover, it moves silently on its two small rubber wheels.
•QUIET OPERATION
Noise level and vibration dBA < 72.8

DUPLEX 280i
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1.4 TIPS FOR CLEANING FLOORS
CLEANING CARPETS OR RUGS
Fit the yellow brushes (option).
Weadvise you to cross the washed tracks so that all fibres appear well cleaned taking care not
to wet them too much.
Carry out a few tests before starting to wash.
Use a non-foaming detergent appropriate to clean carpets or rugs.
LITHIUM ION BATTERY DUPLEX 280i DC
The lithium ion battery power decreases slightly when brushes face a
greater friction cleaning and washing fabric flooring.
CLEANING WOOD PARQUET
Fit the yellow brushes (option) or the supplied grey brushes if the parquet is very dirty.
Donotwetthefloortoomuch,andinparticularnotpaintedflooring,whichabsorbsmoremoisture.
Be careful when cleaning this type of floor. Carry out a few tests before washing the entire
surface.
Use a non-foaming detergent appropriate for parquet flooring.
CLEANING ALL TYPES OF FLOORING
Install the supplied grey brushes.
Use an non-foaming and non-acid all-purpose cleaner (PH max. 9).
CLEANING HEAVILY DIRTY, HARD OR DINGY FLOORS
Fit the black brushes (option).
Use a concentrated non-foaming and non-acid all-purpose cleaner (PH max. 9).

DUPLEX 280i
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CLEANING FLOORING WITH WAX CLEANERS
Some floors are well suited to be cleaned and treated at the same time with WAX CLEANERS,
such as:
•Florentine terracotta tiles
•Smooth tiles
•Clinker
•Marble
•Granite
•Industrial flooring
•Studded rubber flooring
•Wood flooring
•Old wax-treated flooring and many other.
WAX CLEANER “Shiny effect”
Fit the supplied grey brushes, use any wax cleaner available in shops, mix it with water
(see the instructions on the bottle for the dose). Follow the instructions on paragraph
“1.10 HOW TO WASH FLOORS” (Phase 1 and 2).
When cleaning is complete and the floor is thoroughly dry, wipe again after fitting the
brown polishing brushes.
Doing this you will obtain great results and have the entire surface cleaned to perfection with a
“shiny effect”. Moreover,dirtwillbeimmediatelyrecoveredinasimple,quickandconvenientway.
POLISHING WAXED FLOORS
Fit the brown brushes (option).
Turn the recovery tank knob to “1” (In this case only the brushes work and the recovery system
is deactivated).

DUPLEX 280i
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SOAKING/WASHING HEAVILYDIRTY FLOORING
When you need to scrub flooring that has been dirty for a long time and has every sort of spots
and dirt, you are advised to proceed as follows:
1. Fit the supplied grey brushes for medium dirt or the black brushes (option) for heavy dirt;
2. Raise the recovery tank turning the knob and set it to 1 (Fig. 1.2). In this setting the recovery
systemwillnotworkandtheliquidpouredontothefloorwillrequireamoreemulsifiedsolution,
and therefore, it will allow the detergent to
be more effective (“soaking”).
3. Press the lever to dispense a large amount
of detergent consisting of product/water,
preferably warm at a temperature of
35/40°C.
4. Move the machine forward on the entire
wet surface, in all directions or following
precise tracks;
5. Stop the machine and turn the knob to “0”
to lower the tank and re-activate the dirty
water recovery system.
Figure 1.2
WARNING
Thoroughly clean the machine and brushes after cleaning heavily dirty
floors and before cleaning delicate floors.
Do not use the machine to spread the wax.
IMPORTANT!
Do not products that are: “Static dissipative detergents” as can damage
the brushes and plastic parts of the machine.

DUPLEX 280i
13
1.5 TRANSPORT
DUPLEX 280i can be carried easily from one room to the other.Tilt it to one side and let it move
using the two small rubber wheels (Figure 1.3).
Figure 1.3

DUPLEX 280i
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1.6 TECHNICAL FEATURES
Built in compliance with EN 30335-2-07-1998-2006/42/EC
DUPLEX 280i AC with power cord
GENERAL DATA: Lithium ion battery DUPLEX 280i DC
Dimensions: Length - Width - Height mm 330 –280 –165
Brush Diameter mm 85
Brush Width mm 224
Tank capacity lt 1.75
Recovery tank capacity lt 1.0
Brushes pressure on flooring gr/cm2200
Washed track/width mm 224
Theoretical working surface mq/h 200/250
Degree of protection class IP24
Weighted acceleration value m/s21.0
Noise level and vibration dBA < 72,8
DUPLEX 280i AC
Voltage Volt. 230 - 50 Hz.
Voltage Volt. 100/120 - 60 Hz
Power Watt 350
Brushes rpm 50 Hz and 60 Hz model rev./'1 780/936
Electrical insulation Class: I°
Unloaded Weight kg 13
Lithium ion battery DUPLEX 280i DC
Voltage Volt DC 36
Power Watt 260
Unloaded weight with lithium ion battery kg 12
Max. autonomy, with new battery approx. 1.0
hours
LITHIUM ION BATTERY
Battery pack with PCB degree of protection
Supplied voltage Volt. 36
Supplied current Amp. 7.23
Dimensions Length - Width - Thickness mm 430x85x50
W eight kg 2.3
SUPPLIED BATTERY CHARGER
Duplex Universal power supply Volt. 100/240

DUPLEX 280i
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Universal frequency Hz 50/60

DUPLEX 280i
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THE MACHINE IS REGISTERED
Trademark: DUPLEX INT.
Country: Italy
Universal identification Mod. DUPLEX 280i
Power Watt.
Power supply: Volt. xxx
Frequency: Hz. 50 or 60
Voltage DUPLEX 280i DC Volt. 36
Serial number Serial no. xxxx
Month and year of manufacture: Current month and year
Self-certification marking: CE
Weight Kg.
ELECTRIC MOTOR EQUIPPED WITH:
Original nameplate applied by the manufacturer
MACHINES MADE EXCLUSIVELY IN ITALY
DUPLEX INTERNATIONAL Srl
50058SIGNA-FIRENZE-Italy-ViaGobetti19,21,23
Tel [phone] - Fax [phone]
www.duplexitaly.com - [e-mail]

DUPLEX 280i
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F
B
1.7 ASSEMBLING THE HANDLE
Use the supplied hex wrench to assemble the handle as follows:
1. Place the two conical inserts M into the seats of support C.
2. Insert chromed rod B into support C already
fitted with the two conical inserts M.
3. Screw the two screws N and tighten firmly.
4. Place the two conical inserts M into the seats L
of handle D. D
5. InserthandleDintothechromedrodBalready G
fitted with conical inserts M.
6. Insert the transparent hose I for the washing H
liquid into the appropriate coupling on the
machine casing.
7. Insert tank E into the seat of support A that M
will snap into place pressing it towards the
chromed rod. N
8.
Safety handle L (Start&Stop) to immediately E
switch on/off the machine.
9. Couple flexible cable F to lever G making it
go through support H.
Only for DUPLEX 280i AC
10. Fastentheelectricalcablestartingfromhandle A
D up to the casing making it go through the
appropriate seat of support A; N
MI
C
Figure 1.4

DUPLEX 280i
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1.8 LOADING THE WASHING LIQUID
Tank E which contains the washing liquid can be removed easily and quickly as it is snapped
into place on the chromed rod of the handle.
Filling of the tank can be performed as follows:
Mode 1:
1. Remove the tank and refill under a water
tap.
2. Add a non-foaming detergent.
3. Stir the solution and re-insert the tank in
its housing.
Mode 2: E
1. Leavethetankassembledonthemachine.
2. Mix the detergent solution.
3. Pour the liquid into the tank.
(See the instructions on the bottles for the
correct dose)
WARNING!
Do not use unsuitable detergents or
aggressive and acid-based chemicals like:
•Hydrochloric acid
•Trichloroethylene
•Methyl ethyl ketone
•Acetone
•Pure ammonia
•Bleach
•Pure sodium hypochlorite, etc.
Figure 1.5
Static dissipative detergents which can damage the brushes and plastic parts of the machine.
WARNING
Themanufacturer declines anyliability for damage caused to themachine,
flooring of any kind, including carpets and rugs, deriving from the use of
non conforming detergents or products (see “1.14 WARRANTY” -page 29 )

DUPLEX 280i
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1.9 HOW TO USE
Turn the recovery tank knob to “0”. This operation allows you to lower the tank with its scrapers
until they touch the rubber conveyor belts for the collection of dirty liquid (Fig. 1.6).
After using the machine, turn the knob to “1”to avoid warping the scrapers and conveyor belts.
We recommend you to lubricate the rubber conveyors frequently using an ordinary silicone oil
spray available in shops.
WARNING
Theknobwhichadjuststherecoverytankpositionmustalwaysbeactivated
with the machine at a standstill.
Figure 1.6
MACHINE START-UP
DUPLEX 280i AC:
Plug the cable into an earthed socket.
Removethesupporttripodbeforestartingup
the machine (Fig. 1.7).
Figure 1.7

DUPLEX 280i
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L
S
DUPLEX 280i AC
Battery DUPLEX 280i DC;
Press the safety and pre-activation switch (S) on the
handle: a red light will switch on.
Machinestart-uptakesplacetakingholdofthehandleand
keepingpressedtheyellowsafetylever(L)(Figure1.8).
LITHIUM ION BATTERY
IMPORTANT PRECAUTION
Switch off the safety and pre-
activation “S” switch each time the
machine is not used or in case of
interruptions or work breaks, even
short.
The red lit up switch key discharges
the battery, even if it consumes little
power.
Figure 1.8
LOADING LITHIUM ION BATTERY
WARNING
Carefully readinformation regarding the LithiumIon batteryon paragraph
“1.16 LITHIUM ION BATTERY (DUPLEX 280i DC)”
1. The battery can be charged when it is out or into its housing on the machine.
2. Insert the Battery charger plug into the charger socket (X).
3. When the battery is discharged its LED turns red.
4. The Battery charger LED turns green when the battery is charged.
5. The PCB electronic system incorporated into the battery can stop machine operation
immediately when the battery power is low. If the PCB does not trigger, use the machine as
long as you notice a reduction in the rpm and in brush performance, then stop the machine
and do not insist or wait for the machine to stop on its own.
WARNING
DO NOT attempt to re-start the machine if the battery is discharged.
Immediately switch off the pre-activation (S) switch (Fig. 1.8).