Instruction Manual 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
AVOID ANY 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.
DUPLEX 340-420-620
6
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
DUPLEX 340-420-620
7
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
DISPOSAL AND RECYCLING”.
DUPLEX 340-420-620
8
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
Possible thanks to the action of two powerful contra-rotating brushes that scrub 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
This allows for the utmost working efficacy and more effective cleaning of the grouting in floors.
• 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
9
• 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.
• TECHNOLOGICAL ADVANTAGES
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
10
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
DUPLEX 340-420-620
11
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
DUPLEX 340-420-620
12
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 5
7
4 3
6
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
DUPLEX 340-420-620
13
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 containing the liquid from their housings.
Use a screwdriver to adjust their position either inwards or outwards.
7
Figure
1.7
DUPLEX 340-420-620
14
A
1.7 FILLING THE MACHINE
Two tanks contain the washing liquid and they both
have always to be at the same level.
Filling can be performed as follows:
1.
by pouring water in from a jug (figure “1.9”);
2.
removing the tanks and 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
The manufacturer declines any liability for damage caused to the
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
15
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
16
1.9 USING THE MACHINE
1.
Take hold of the handle and lower it slowly to 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
handle at brief intervals and only when the machine is moving
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
17
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 left and vice versa, allows DUPLEX machines to work in both
directions and reach the opposite ends of every room.
A B C
Figure 1.14
DUPLEX 340-420-620
18
Starting
position
1
st
stage
position
st
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 have reached the corner, move back with the machine and keep 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.
1
st
Stage
2
st
Stage
Figure 1.15
DUPLEX 340-420-620
21
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.
Press the main switch on the boiler (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
handle at brief intervals and only when the machine is moving
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 should never be empty.
STEAM 620 model is equipped with a level gauge for water.
WARNING
The disposal of the dirty water must be carried out in compliance
with the local regulations in force.
DUPLEX 340-420-620
22
1.12 TIPS FOR CLEANING FLOORS
The original DUPLEX brushes are tested and balanced individually with special electronic
instruments and guarantee the absence of vibrations that could generate mechanical stress for
the machine and the floors.
The brushes are supplied in different colours according to their use characteristics:
Brush colour
Use
Grey
All-purpose for all types of flooring (supplied as standard)
Black
All-purpose for hard floors.
Scarifying
For very heavy scrubbing.
Used singly in conjunction with a standard black brush.
Yellow
For cleaning carpets
How to clean carpets:
Set the slide switch to the working position, choosing the correct
operating position (normal carpets / long-pile carpets). It is
recommended to cross over the washing tracks in order to thoroughly
wash all the fibres while taking care not to wet the carpet too much.
(Make several trial runs before proceeding with the full washing
operation).
Brown
Polishing brushes for polishing smooth surfaces.
After spreading a thin layer of liquid wax evenly over the floor
wait until the wax is completely dry.
Then vigorously brush the floor with the dry brown brushes
.
Dark grey
(Tynex)
Extremely abrasive for removing paint, plaster, incrustations
of cement and other products, even when dried hard on resistant
industrial floors: these brushes can normally be used with water and
detergents.
CAUTION: due to their abrasive power they may damage
the floor.
DUPLEX 340-420-620
23
CLEANING FLOORING WITH WAX CLEANERS
The treatment system allows the entire surface to be thoroughly washed, obtaining an optimal
“polished look” and an instantaneous recovery of the dirt in a simple, fast and cheap manner.
It is extremely suitable for the following floor types:
• Terracotta
• Smooth tiles
• Marble
• Granite
• Industrial flooring
• Studded rubber flooring
Proceed as follows:
1.
Use the machine with the two supplied grey brushes;
2.
Fill the two tanks with the appropriate detergent (can be requested to the Manufacturer)
mixing it with water according to the instructions contained on the bottles;
3.
Proceed with the usual washing system.
At the end of washing we recommend passing over the surface using the Brown polishing or
Scotch-brite brushes to obtain a greater floor brilliance.
Extremely dirty floors:
Whenever it is necessary to wash floors which have remained dirty for a long time with all sorts
of stains and the build-up of solvents from normal detergents, it is recommended to deactivate
the detergent solution recovery device.
In this way the liquid poured onto the floor will serve for turning the solution into an emulsion,
thus allowing the detergent to be more effective.
Proceed as follows:
1.
Stop the machine (if in operation);
2.
Position the MOP-UP lever (figure “1.10”) upwards;
3.
Press the lever of the handle to dispense a large amount of detergent consisting of product/
water, preferably warm (35/40°C) .
4.
Move the machine forward on the entire wet surface, in all directions or following precise
tracks;
5.
When work is complete stop the machine;
6.
Move the MOP-UP lever downwards to re-activate the automatic dirty water recovery device.
7.
Proceed with the usual washing system.
WARNING
The MOP-UP lever must only be activated when the machine is
Stopped. Thoroughly clean the machine and brushes after
Cleaning very dirty floors and before cleaning delicate floors.
DUPLEX 340-420-620
24
1.13 STOPPING THE MACHINE
To stop the machine, proceed as follows:
1.
Move the handle to the vertical position (rest position);
2.
Move the slide switch (figure “1.10”) to the RT position (REST TRANSLATION);
3.
Press the main switch on the generator (figure “1.16”) (STEAM model). The corresponding
indicator light will switch off.
WARNING
The main switch must be turned off whenever the machine is not in use.
DUPLEX 340-420-620
25
1.14 TRANSPORT
Machine transportation occurs by means of the four sliding castors that
allow for easy movement.
To transport the machine proceed as follows:
1.
Move the handle to the vertical position (rest position);
2.
Move the slide switch (figure “1.10”) to the RT position (REST TRANSLATION);
3.
Lower the handle to either of the two sides, pushing the machine in the required direction.
TROLLEY FOR TRANSPORTATION
The trolley for transportation (figure “1.18”) is an optional accessory that makes the machine
easier to move about on irregular floors or going up/down steps.
Figure 1.18
DUPLEX 340-420-620
26
1.15 AUTOMATIC MOTOR PROTECTION "MOTOR PROTECTOR"
The “Motor Protector” is a safety device which
stops the machine in case conditions occur
that overload the electric motor (e.g. foreign
bodies caught in the brushes which can
prevent their rotation, poor supply of power,
MU RT
overheating, etc.).
Figure 1.19
WARNING
Disconnect the machine from the power socket before removing any
foreign bodies caught in the brushes.
After checking and possibly eliminating the cause, which led to motor overload, press the “Motor
protector” button (after about 60 seconds) to restore machine operation.
DUPLEX 340-420-620
27
1.16 CLEANING AND MAINTENANCE OF THE BRUSHES
DUPLEX brushes require little routine maintenance.
The high rotation speed during cleaning helps to dislodge dirt and keep the brushes efficient
at all times.
However, check their status and clean them regularly.
WARNING
Remove the plug from the power socket before cleaning the brushes.
In addition to cleaning, it is necessary to perform the following operations periodically:
1.
Remove the brushes from the machine (see following section);
2.
Dip them in a container with cold or lukewarm water and let them soak for a few hours;
3.
Stir and rinse the brushes well;
4.
Re-fit the brushes in the reverse position in relation to the one they had before (point 1).
This is necessary as the bristles tend to bend when the brushes always rotate in the
same direction.
TO REMOVE THE BRUSHES
1.
Use the supplied allen key (6mm) to remove the two screws on the stainless side panel (1).
2.
Extract the two brushes together with the side panel (2).
3.
Separate the two brushes from the side panel.
1
2
Figure 1.20
DUPLEX 340-420-620
28
WARNING
Do not use worn and/or deformed brushes that could cause
vibrations. In this case contact the Service Department.
CLEANING THE MACHINE
1.
Remove the three tanks (figure “1.21”).
2.
Use a damp sponge to carefully clean the
rubber conveyor belts and every part of the
machine;
3.
Use a brush to remove every residue of dirt
from all the corners of the machine.
4.
Dry well.
Figure 1.21
WARNING
Never use pressure washers to clean the machine.
CLEANING THE TANKS
The clean water tanks can be washed with running water
under a tap.
Make sure that there is no dirt and/or foreign
bodies preventing the valves located inside the
tanks from closing.
1.
Unscrew the screws (1);
2.
Remove the nozzles (2) from the tanks holding
them in the middle and pull them upwards;
Figure 2
DUPLEX 340-420-620
31
3.
Extract the nozzles from their side housings;
4.
Clean the holes of the nozzles with a pin (3);
5.
Keep the recovery tank trimmers clean at all
times.
Figure 3 1.23
GENERAL MAINTENANCE
The mechanical parts of the DUPLEX machine do not require periodic maintenance by the
operator as their gears all run on bearings.
1.17 PRECAUTIONS FOR USE OF THE STEAM GENERATOR
1.
Never leave the steam generator turned on or in operation if there is no water in the tank;
2.
After each use, turn off the main switch on the boiler;
3.
Clean the outside of the steam generator with a damp cloth;
4.
Do not wash the generator under running water;
5.
Clean the spray nozzles with a damp cloth and dry with a brush;
6.
Clean the holes with a paper clip;
7.
Keep the water tank clean;
8.
Replace the sand filter at least once a year.
WARNING
Do NOT touch the steam spray nozzles or the metal panels of the machine
with your hands due to the high temperatures that they reach during
operation.
DUPLEX 340-420-620
31
DUPLEX STEAM DESCALING
To maximise the performance and life span of your steam machine it is vital to carry out regular
maintenance. This involves scale prevention and removal.
Always wear gloves when maintaining the steam generator.
Scale Prevention:-
Using Duplex Hydroscale regularly helps to minimise scale build
up in the heating chamber and the outlet steam pipe. Hydroscale
should be used as indicated on the container. The machine can
be used normally with the diluted Hydroscale in the clean water
tank.
Picture 1 Picture 2
Scale Removal:-
Supplied with each Duplex steam tank is a 2.5mm Allen key, use this to remove the small grub
screw situated at the end of the stainless steel plate on the side of the steam kit (pic1).
Every 2 weeks (or less in very hard water areas) before using the steam generator, remove this
screw and run the machine (with the brushes removed) with the steam generator connected to
the clean water tank filled with diluted Hydroscale (you can also flush the unit with undiluted
Hydroscale, place the small sample Hydroscale bottle next to the machine with the black pipe
inserted directly into the bottle), any scale should be forced out of the steam outlet pipe.
Check that the exit holes (pic 2) are clear and clean (a paper clip can be used to unblock these
holes) Always wear gloves when maintaining the steam generator, the stainless steel plate does
get hot. Replace the grub screw after clearing/cleaning the pipe.
For spare parts and chemical orders contact alfie@duplex-cleaning.com
Part numbers:-
Hydroscale - Hydroscale
Allen key - Hexkey3
DUPLEX 340-420-620
31
HINTS ON THE “STEAM” GENERATOR OPERATION
The boiler starts heating up when the main switch (figure “1.16”) on the steam generator is
turned on (red LED indicator light switched on).
The heating of the boiler is controlled by one thermostat which deactivates the operation in
case of a fault.
A thermofuse limiting device interrupts boiler operation in the event of thermostat malfunctions.
Do not let the clean water tank become empty, this will cause the pump to overheat. Once the
overheating reaches a critical level, a thermostat incorporated into the pump will intervene and
immediately stop its operation. The pump will then have to cool down which could take 20/30
minutes, after this time it will automatically reset.
It is always recommended to turn off the pump using the main switch in case of no water in the
tank.
WARNING
Do NOT touch the steam spray nozzles or the metal panels of
the machine with your hands due to the high temperatures
that they reach during operation.
DUPLEX 340-420-620
32
1.18 TROUBLESHOOTING TIPS
WET STRIPES ON THE SIDES
• Excessive liquid dispensed
• Irregular paths are covered failing to follow the instructions on paragraph “1.10 HOW TO
WASH FLOORS”.
• Recovery tank trimmers dirty or worn. Replace.
The dirt is not picked up
• Mop-Up device turned off.
• Worn brushes.
• Recovery tank trimmers dirty or worn out.
• Cleaning liquid not coming out.
• The recovery tank has not been fitted correctly into its housing.
Does not start up
• Faulty plug – if damaged - Do not use the machine and replace cable immediately.
• Mains cable damaged – Do not use the machine and replace cable immediately.
• “Motor protector“ tripped. Press the (MP) button to re-activate it, “1.8 STARTING UP”.
Re-start occurs after approximately 60 seconds.
• The slide switch 1 has been left in the “RT” (rest translation) position “1.8 STARTING UP”.
• The handle has been lowered too quickly.
• Voltage too low.
It vibrates
• The brushes are deformed, worn or dirty, follow the instructions on paragraph “TO
REMOVE THE BRUSHES”.
Liquid flows continuously
• The pistons have not re-entered, in this case they restrict the tanks which cannot be removed
and as a result the valves remain open.
• Pull the lever on the handle several times in order to facilitate the unblocking. Otherwise
introduce a screwdriver or a piece of wood into the opening of the tank and press on the
rubber valve so that is pushes the pistons backwards.
DUPLEX 340-420-620
33
The liquid continues to run out even when the pistons have re-entered
• The valves are blocked in one of the tanks. Press the valves several times to unblock them.
• A foreign body has been caught up in the valve seat. Rinse each tank vigorously while keeping
the external button that opens the valve pressed down.
One tank supplies more liquid than the other
• Use a screwdriver to align the two pistons at the same level (figure “1.7”).
1.19 WARRANTY
The commercial warranty issued by the seller has a validity of “12 months”
Warranty acknowledgement can be achieved showing a photocopy of the receipt or invoice
along with the machine serial number.
Failure to send this document entails the non-acknowledgement of the warranty.
The warranty does not cover consumable components such as:
• Brushes.
• Trimmers.
• Conveyor belts.
• Mains cable .
• Plastic or metal parts damaged by negligence or abuse.
Also for Steam models:
• Water pump;
• Thermofuse;
• Thermostat;
• Boiler connection cable and GF7 plug and socket
• Electric resistance of the boiler;
• Water connection pipe
• Sand filter.
DUPLEX 340-420-620
34
FORFEITURE OF THE WARRANTY
The warranty will be invalid in the following cases:
• The machine is used for purposes not complying with those for which it has been designed
or is used improperly.
• Failure to observe the instruction for use described in this manual.
• The machine is damaged due to the use of unsuitable detergents or aggressive and
unsuitable chemical products, like strong acid products: Static dissipative detergents,
Hydrochloric acid, trichloroethylene, methyl ethyl ketone, acetone, pure ammonia, bleach
or pure sodium hypochlorite, etc.
1.20 DISPOSAL AND WASTE SEPARATION
Pursuant to art. 13 of Legislative Decree of 25
th
July 2005, no. 151 “Fulfilment of the Directives
2002/95/EC, 2002/96/EC and 2003/108/EC on the restriction of the use of certain hazardous
substances in electrical and electronic equipment and disposal of their waste”.
The crossed-out bin symbol on the equipment indicates that at the end of its lifespan, the
product, must be collected separately from other waste.
The user must deliver the machine, at the end of its lifespan, to an appropriate collection
point for the recycling of electric and electronic equipment or deliver it back to the
retailer when purchasing a new equivalent machine on a one-to-one basis.
Correct disposal of the machine for its recycling and treatment will help prevent
potential negative consequences for the environment and human health, and will
help recycling the materials of which the machine consists.
DIFFERENTIATED SUBDIVISION OF THE MATERIALS
Electrical components:
Material that can be disposed of with the urban waste collection, in compliance with the legal
provisions in force in the country of use.
Mechanical components:
The machine is built with aluminum, steel and plastic materials.
Steel and aluminum will not damage the environment if recycled by qualified and authorised
companies.
The plastic materials may cause environmental damage, therefore they should be handed over
to specialised companies authorised for disposal.
The disposal of the packaging must be carried out in accordance with the regulations in force.
DUPLEX 340-420-620
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1.21 HELPFUL HINTS FOR USE
SPECIAL PRODUCTS AVAILABLE ON REQUEST
SILICONE SPRAY 400ml
To maintain the belts, before and after using our machines it is recommended to
lubricate the rubber conveyors with silicon spray. Code SIL400
HYDROSCALE 5 ltr
Use daily to inhibit the buildup of limescale, also helps with the cleaning
process. Code Hydroscale
TECHNICAL FEATURES
Harmonised Standard applied IEC/EN 60335-2-67
The Duplex floor-washing machines have been approved by the following Quality
Institutes: ENEC
REGULATIONS: EN 5036:03 + A1:06, EN 55014-1:06 + A1:09, EN 550142:97 + A1:01 + A2:08, EN 60335-1:02 +A1:04 +A11:04 +A2:06 +A12:06 +
A13:08, EN 60335-2-67:09, EN 61000-3-2:06 + A1:09 + A2:09, EN 61000-33:08, EN 62233:08
In compliance with the following provisions and Directives 2004/108/EC
(EMC), 2006/95/ EC (LVD)
DUPLEX 340-420-620
36
DUPLEX STANDARD
DUPLEX STEAM
340
420
620
340
420
620
Length mm
430
Width mm
340
420
620
340
420
420
Height mm
240
250
Weight empty Kg
27.5
27.5
36
29
29
41.5
Brush diameter mm
102
Brush width mm
280
350
550
280
350
550
Voltage V
110/240
Frequency Hz
50/60
Power W
1000
1000
1600
1000
1000
1600
Insulation class
I°
Theoretical working surface
m3/h
180
350
550
180
350
550
Tank capacity L
4.2
5.4
9.5
2.1
2.7
4.75
Recovery tank capacity L
1.9
2.3
3.6
1.9
2.3
3.6
Brush round-minute rpm
650-750
Pressure on flooring g/ cm3
190
190
160
190
195
195
Steam jet width mm
-
250
330
530
Steam jet endurance min
-
60/90
Boiler power W
-
1300
1400
Pump Power W - 16
Noise level dB
< 64
rms value of the weighted
1
vibration acceleration m/s2
Vibration value compliant with the ISO 5349-1 standard = ahv 0,95 m/s²
STEAM 620 machine is equipped with original DUPLEX boiler of greater
power and supplied with replaceable element with easy access for
maintenance, safety valve and "CP BOARD" high-performance thermal
insulation material.
Moreover the active solution tank of the 620 STEAM model is equipped with
water level gauge.
DUPLEX 340-420-620
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MACHINES HANDMADE EXCLUSIVELY IN ITALY
Made in Italy
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