Duplex 340 Series User manual

InstructionManual and
Maintenance Guide
STANDARD
340 / 420
DOUBLE
HANDLE
620
STEAM 340 / 420 STEAM 620
FLOOR WASHER / CARPET
CLEANER
DUPLEX
340 / 420 / 620

WARNINGS
READ THE INSTRUCTIONS OF THIS BOOKLET
CAREFULLY BEFORE USING THE MACHINE.
See Directive ISO 7000-0434-1691-0790
WARNING: This appliance cannot be used to collect hazardous dusts
WARNING: This device is intended for use exclusively with the brushes specified by
the manufacturer.
The use of any other brushes could compromise the safety of the device.

DUPLEX 340-420-620
TABLE OF CONTENTS
1.1 FOREWORD 5
PROPER AND IMPROPER USE..............................................................................................................................6
1.2 GENERAL WARNINGS 7
MAINS CABLE WITH PLUG.....................................................................................................................................7
AVOIDANY CONTACT OF THE MAINS CABLE WITH BRUSHES.........................................................................7
OTHER WARNINGS.................................................................................................................................................7
1.3 DISTINCTIVE FEATURES AND COMPETITIVE ADVANTAGES OF DUPLEX MACHINE 8
1.4 GENERAL FEATURES AND FUNCTIONS 10
STEAM ...................................................................................................................................................................11
1.5 MACHINE ASSEMBLY 12
1.6 ASSEMBLING THE HANDLE 12
STEAM GENERATOR OPERATION...........................................................................................................................14
1.7 LOADING THE WASHING LIQUID 15
DUPLEX STEAM 340 AND 420 AND 620............................................................................................................15
1.8 STARTING UP 16
1.9 USE PROCEDURE FOR ALL MODELS 17
1.10 HOW TO WASH FLOORS 19
STAGE 1.................................................................................................................................................................19
STAGE 2.................................................................................................................................................................19
1.11 CLEANING EXTREMELY DIRTY FLOORS 20
USING THE STEAM MODELS..............................................................................................................................20
1.12 TIPS FOR CLEANING FLOORS 22
CLEANING FLOORING WITH WAX CLEANERS ..................................................................................................24
1.13 STOPPING THE MACHINE 25
1.14 TRANSPORT 26
TROLLEY FOR TRANSPORTATION...........................................................................................................................26
1.15 AUTOMATIC MOTOR PROTECTION "MOTOR PROTECTOR" 27
1.16 CLEANING AND MAINTENANCE OF THE BRUSHES 28
TO REMOVE THE BRUSHES................................................................................................................................28
CLEANING THE MACHINE....................................................................................................................................28
CLEANING THE TANKS...............................................................................................................................................29
GENERAL MAINTENANCE ...................................................................................................................................31
1.17 PRECAUTIONS FOR USE OF THE STEAM GENERATOR 32
DUPLEX STEAM DESCALING.....................................................................................................................................32

DUPLEX 340-420-620
HINTS ON THE “STEAM” GENERATOR OPERATION............................................................................................. 33
1.18 TROUBLESHOOTING TIPS 33
WET STRIPES ON THE SIDES .............................................................................................................................34
THE DIRT IS NOT PICKED UP ..............................................................................................................................34
DOES NOT START UP...........................................................................................................................................34
IT VIBRATES.................................................................................................................................................................34
LIQUID FLOWS CONTINUOUSLY..............................................................................................................................34
THE LIQUID CONTINUES TO RUN OUT EVEN WHEN THE PISTONS HAVE RE-ENTERED AND ONE TANK
SUPPLIES MORE LIQUID THAN THE OTHER...................................................................
WARRANTY
1.19 DISPOSAL AND WASTE SEPARATION 35
RECYCLING MATERIALS............................................................................................................................................35
1.20 HELPFUL HINTS FOR USE 36
SPECIAL PRODUCTS AVAILABLE ON REQUEST...............................................................................................36
1.21 TECHNICAL FEATURES 37

DUPLEX 340-420-620
5
WARNING
Read the instructions of this booklet carefully before using the machine.
The device is NOT intended for use by persons (children included) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance by a person responsible for
their safety.
Children should be supervised to ensure that they do not play with the appliance.
WARNING: Operators must be adequately trained to use the machine.
1.1 FOREWORD
DUPLEX is a machine for washing floors with an original automatic system for recovering
the dirty water.
Its special manufacturing characteristic consists of off-set cylindrical brushes that rotate at
600 rpm and a pressure of 200g/per cm2 which gives:-
•A thorough washing and drying of any surface;
•Right to the edge cleaning;
•Automatic collection of dirty water.
Ease of use of the machine is ensured by the following:
•Two way handle operation for cleaning in forward and reverse directions;
•Counterbalanced position of the tanks that contain and supply the clean water;
•Tank for recovering the dirt located in the center of the machine;
•Safety guards bearing the weight of the entire structure in die-cast aluminum;
•Brush support in stainless steel;
•Four wheels to control the selected brush height.

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DUPLEX is covered by international patents and has been designed and built according to the
best Italian technical tradition exploiting the know-how of an extremely high technological level.
PROPER AND IMPROPER USE
The proper use of this appliance includes washing, scrubbing and drying applications in
industrial and commercial use (hotels, schools, factories, hospitals, shops, offices) of floors
(internal and external) made of the following materials:-
Altro –Timber safe –ceramic tiles and grout - rubber –dimpled rubber - terracotta tiles -
cement - wood –plastic –non-slip safety –PVC –vinyl –Profiled Rubber –sports safety
flooring - epoxy resin - brick - marble - granite –relief ceramics –circular disk floors -
linoleum - porcelain - glass –artistic mosaics - quartz –steel checker plate and many others
340/420
STANDARD 620 STANDARD
340/420 STEAM 620 STEAM
1.1

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1.2 GENERAL WARNINGS
MAINS CABLE WITH PLUG
Check the mains cable regularly to see if there is any sign of damage: cracking, peeling, ageing.
•If the mains cable 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
•Qualified personnel must perform cable replacement.
AVOID ANY CONTACT OF THE MAINS CABLE WITH THE BRUSHES
•Always work with the cable behind you as to not get it near the machine during use
•Should the mains cable get caught under the machine brushes, DO NOT ATTEMPT TO
GET IT OUT WHILE THE MACHINE IS WORKING. Move the handle upwards to the
vertical position to stop the machine immediately and move the slide switch to the rest
position then remove the plug from the socket outlet
•Only the remove the cable and check for damage if it is damaged in any way the cable
must be replaced before the machine is used again
OTHER WARNINGS
•Whenever the machine is in the rest position check that it does not rest on the brushes but
that it is supported by the four wheels that come down automatically when the slide
switch is in the “RT” rest position (see figure “1.10”). If this not the case, the machine
weight could warp the brushes.
•Do not pour water or liquids directly onto the machine.
•Unplug the mains cable from the power socket before any maintenance.
•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.
•When the machine is no longer able to operate after years of work, it must be dismantled
and rendered unusable for disposal in compliance with the indications on paragraph “1.20
DISPOSALAND RECYCLING”.

DUPLEX 340-420-620
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WARNING
CLEANING AND MAINTENANCE OPERATIONS MUST BE
PERFORMED WITH THE MACHINE
DISCONNECTED FROM THE MAINS SUPPLY.
1.3 DISTINCTIVE FEATURES AND COMPETITIVE ADVANTAGES OF
DUPLEX MACHINE
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.
•OFF-SET BRUSH POSITION
This allows for cleaning right to the edge and into the corners.
•TWO-WAY HANDLE
This allows for easily changing the direction of cleaning.
•DOUBLE LIQUID DISPENSING SYSTEM
This wets both brushes simultaneously.
•DOUBLE DIRT COLLECTION SYSTEM
Possible thanks to the forward and reverse cleaning action.
•BALANCED AND LIGHTWEIGHT USE
Thanks to the balancing of the components.
•DOUBLE WASHING SYSTEM
Possiblethankstothe actionof twopowerful contra-rotatingbrushesthatscrub and agitate with
a peripheral speed of 5 metres a second.
•DOUBLE USE SYSTEM
Pre-washing is achieved by turning off the pick-up system or washing and drying simultaneously
with the pick-up system on.
•LARGER DIAMETER BRUSHES
Thisallowsfortheutmostworkingefficacyandmoreeffectivecleaningofthegroutinginfloors.
•BRUSH INSERTION SYSTEM
Original solution that prevents vibrations during operation.
•BRUSH REMOVAL
Easy removal by using the allen key supplied with the machine.

DUPLEX 340-420-620
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•OPTIONAL BRUSHES
Suitable for washing and polishing all types of floors, brushes for carpets, and also abrasive
brushes for removing ground-in dirt.
•TWO TANKS CONTAINING THE WASHING LIQUID
Easy removal for cleaning.
•RECOVERY TANK
Installed in the middle of the machine for easy removal and fitted with two efficient trimmers.
•VERSATILITY
Lightweight, user-friendly, and fatigue-free.
•FOUR OPERATING POSITIONS
For adapting from heavy, hard-floor scrubbing to delicate, deep pile carpet cleaning.
•TECHNOLOGICALADVANTAGES
1. No electrostatic loads.
2. Hermetically sealed motor.
3. Revolving mechanisms on maintenance-free sealed stainless steel bearings.
4. Electrical energy 110% greater than other machines.
5. Exceptional efficacy thanks to the original dirt recovery system.
•QUIET OPERATION
Noise level and vibration dBA < 60
•TANK CAPACITY
200% greater than other machines.
•STEAM GENERATOR
The original and exclusive generator allows Duplex floor washer Steam model to wash and
sanitize all types of flooring by means of steam at 110c. The steam is directed on to the floor at
a high temperature facilitating the removal of even the most stubborn dirt.

DUPLEX 340-420-620
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1.4 GENERAL FEATURES AND FUNCTIONS
1
Slide switch (Rest Translation)
)
5
Recovery tank
2
Insertion of dirt collector (Mop Up)
6
Steam switch
3
Motor Protector
4
Tanks for water with detergent

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STEAM AND STEAM PLUS
ECOFRIENDLY STEAM MACHINES
By using steam and brush agitation we can clean all types of flooring
without the use of chemicals and detergents.
Washes, restores, dries and sanitizes all types of flooring by means of powerful steam.
The steam is directed on to the floor at a high temperature facilitating the removal of even the
most stubborn dirt.
The steam is sprayed close to the floor for more effective in the removal of greasy and
stubborn dirt on either hard, smooth or profiled flooring.
This steam washing system is particularly effective on textile flooring such as carpets
as it not only washes the textile fibres but it re-vitalizes them as well.
The machine is also equipped with two standard tanks which can be used in a conventional
manner with water and detergent.
On the STEAM models, two tanks are used, one contains and supplies the water and the other
contains the steam generator.
The possibility to reverse the handle position, allows the operator to easily work in both directions
and thoroughly clean and wash floors and carpets.
Figure 1.3

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1.5
1.5 MACHINE ASSEMBLY
The machine is shipped packed in cardboard
boxes (1). 1
On receipt of the package, the user must carry
out the assembly of the parts which due to their
overall dimensions are unassembled before
being shipped.
The package contains the following:
•Machine (2);
•Elbow for handle (3); 2
•Handle (4);
•Connecting casing (5);
•Use and maintenance manual (6);
•Water Tanks (7);
•Certificate of compliance.
1.6 ASSEMBLING THE HANDLE
5 57
436 1
1. Insert the elbow of the handle into the housing of the jointed elbow.
2. Tighten the two screws with the Allen key supplied and tighten well (A);
3. Assemble the handgrip of the handle by pushing it through the connecting casing and make
sure to point the screws inward switch the cable-holder facing towards the bottom.
4. Screw up the three screws with the same Allen key supplied (B)
A B
Figure 1.6

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8
8
When assembled the machine must look like the following drawing.
STANDARD STEAM 620 STEAM 620 STANDARD
1.6
5. Adjust the screw of the slide switch located underneath the lever (7) of the handgrip, at
the same time paying attention to the movement of the pistons (8) that allow the liquid to
exit from the tanks.
6. Make sure that the pistons (8) remain flush with the side panel when the lever (7) is not
pulled down.
IMPORTANT!
If the pistons protrude it may not be possible to insert or
remove the tanks containingtheliquidfromtheirhousings.
Useascrewdriverto adjust their position either inwards or outwards.
7
Figure 1.7

DUPLEX 340-420-620
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A
1.7 FILLING THE MACHINE
Twotankscontainthewashingliquidandthey both
have always to be at the same level.
Filling can be performed as follows:
1. bypouringwaterinfromajug(figure“1.9”);
2. removingthetanksand placing them under
a tap. A
620 steam model is equipped with a level
gauge for water (1) ensuring easy control of
the residual active solution in the tank.
Fill tank “A” only with water and Hydroscale in
the correct dilution
1
Figure 1.7
1.9
WARNING
Themanufacturerdeclinesanyliabilityfordamagecausedtothe
machine, flooring of any kind, including carpets,
deriving from the use of
non conforming detergents or products (see “1.19 WARRANTY” )
DUPLEX STEAM 340, 420 and 620
WARNING
With DUPLEX STEAM model detergents must not be used.
The use of detergents will irreparably damage the equipment.
the manufacturer shall not be liable for damage caused to the machine deriving from
the use of any other type of detergent or non conforming products (see paragraph
“1.19 WARRANTY”).

DUPLEX 340-420-620
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1
Heavy duty wash for hard floors.
2
Normal wash for short pile carpets.
3
Normal carpets and wooden floors.
4
Long-pile carpets.
5
Transporting position.
(REST/ TRANSPORT)
1.8 STARTING UP
1. Make sure that the handle is in the Rest
position (perfectly vertical) and that the
slide switch is in the “Translation”
position (REST TRANSLATION);
2. Plug the mains cable into a socket. MU RT
3. Shift the slide switch to one of the four
available positions according to the type
of cleaning you wish to perform (figure
“1.11”).
(MU= Mop-Up)
1.10
1
2
3
4
5
Figure 1.11
WARNING
During machine operation it is recommended to keep the cable
well clear of the brushes to prevent it from being
damaged.

DUPLEX 340-420-620
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1.9 USING THE MACHINE
1. Takehold of the handle and lower it slowlyto one of the two
sides. The machine will start up and the brushes will start
revolving on the floor (figure “1.12”) .
2. Move the machine slowly forwards, going over the same
washing path with the recovery device MU (MOP UP)
engaged (figure “1.10”).
3. Dispense the liquid by activating the lever underneath the
handleatbriefintervalsandonlywhenthemachineismoving
forwards, taking care not to flood the floor.
Figure 1.12
The dirty water will be collected instantly inside the recovery
tank which must be emptied as soon as it fills up removing it
(figure “1.13”) .
Figure 1.13
WARNING
The disposal of the dirty water must be carried out in compliance with
the regulations in force.

DUPLEX 340-420-620
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Figures A, B and C illustrate how Duplex floor washing machines work close to the edges of
the skirting boards or furniture gaining access also into restricted spaces.
Reversing the handle from right to leftand vice versa, allows DUPLEX machines toworkin both
directions and reach the opposite ends of every room.
A B C
Figure 1.14

DUPLEX 340-420-620
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Starting
position
1st stage
Starting
position
2st stage
1.10 HOW TO WASH FLOORS
Stage 1
1. From the starting position, move forward towards the corner as indicated in the figure.
2. When you havereached the corner,move back with themachine andkeep cleaning the lane
until you reach your starting position.
3. From the starting position move to the second lane to wash slightly overlapping the area
you have cleaned before.
4. Repeat this operation until you complete stage 1.
5. Clean the outer edge on the opposite side of the cleaning area, reversing the machine.
Stage 2
6. Reverse the machine cleaning direction using the handle.
7. Repeat the operations described in Stage 1.
1st Stage
2st Stage
Figure 1.15

DUPLEX 340-420-620
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A
1.11 CLEANING EXTREMELY DIRTY FLOORS
When it is necessary to thoroughly wash floors with ingrained dirt it is advisable to switch off
the “mop-up”.
In such conditions the water left on the floor will serve to further soften the dirt and this will be
subsequently removed by an energetic brushing action together with the steam.
To deactivate the recovery device, proceed as follows:
1. Stop the machine (if in operation);
2. Position the MOP-UP lever (figure “1.10”) upwards.
Then, by positioning the MOP-UP lever downwards the automatic dirty water recovery system
will be switched back on.
IMPORTANT!
When using this procedure on carpets extra care must
be taken not to soak the floor.
USING THE STEAM MODELS
1. Pressthemainswitchontheboiler(A) (figure“1.16”).
The switch will light up when the handle is
lowered, and after approximately 1 minute, the
boiler will reach the operating temperature.
2. Operate the lever positioned under the handle
every time that floor needs additional wetting.
3. Slowly lower the handle on one of the sides. The
machine will start up and the revolving brushes will
start scrubbing the floor.
4. Move the machine forwards following the same washing
track.
5. Dispense the liquid by activating the lever underneath the
handleatbriefintervalsandonlywhenthemachineismoving
forwards, taking care not to flood the floor.
1.17

DUPLEX 340-420-620
21
During use dirty water will be collected instantly inside the recovery tank which must be
emptied as soon as it fills up removing it from its position (figure “1.13”).
WARNING
The tank of the active solution for delivering
the steam shouldneverbeempty.
STEAM 620modelisequippedwithalevelgauge for water.
WARNING
The disposal of the dirty water must be carried out in compliance
with the local regulations in force.