Clarke Focus II User manual

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Patents Pending
This book has important information for the use and safe operation of this machine. Failure to read this
book prior to operating or attempting any service or maintenance procedure to your Clarke machine
could result in injury to you or to other personnel; damage to the machine or to other property could
occur as well. You must have training in the operation of this machine before using it. If your operator(s)
cannot read this manual, have it explained fully before attempting to operate this machine.
All directions given in this book are as seen from the operator’s position at the rear of the machine.
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Operator’s Manual
Libro de Instrucciones
Manuel d’utilisation
Form No. 9097066000 - 04/2010
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2Operator’s Manual - FOCUS®II L17 - S20 - L20 - L20 Cyl. - BOOST®L20
TABLE OF CONTENTS
Operator’s Manual.....................................................................................................................................................................................1
OPERATOR SAFETY INSTRUCTIONS .....................................................................................................................................................3
INTRODUCTION.........................................................................................................................................................................................5
HOW TO KEEP THIS MANUAL.............................................................................................................................................................5
IDENTIFICATION DATA.........................................................................................................................................................................5
CHANGES AND IMPROVEMENTS ......................................................................................................................................................5
UNPACKING..........................................................................................................................................................................................5
TECHNICAL DATA .....................................................................................................................................................................................6
MACHINE TRANSPORT PROCEDURES..................................................................................................................................................7
SYMBOLS SHOWN ON THE MACHINE....................................................................................................................................................7
MACHINE DESCRIPTION ..........................................................................................................................................................................8
OUTER AND INNER STRUCTURE ......................................................................................................................................................8
CONTROL PANEL...............................................................................................................................................................................10
BATTERY CHARGER DATA INSPECTION WINDOW .......................................................................................................................10
USE ...........................................................................................................................................................................................................11
BATTERY CHECK/SETTING ON A NEW MACHINE.......................................................................................................................... 11
BATTERY INSTALLATION AND BATTERY TYPE SETTING (WET OR AGM) ...................................................................................12
BEFORE START-UP............................................................................................................................................................................13
MACHINE START AND STOP.............................................................................................................................................................18
MACHINE OPERATION (SCRUBBING/DRYING)...............................................................................................................................19
TANK EMPTYING................................................................................................................................................................................21
AFTER USING THE MACHINE...........................................................................................................................................................22
MACHINE LONG INACTIVITY ............................................................................................................................................................22
FIRST PERIOD OF USE .....................................................................................................................................................................22
MAINTENANCE........................................................................................................................................................................................23
SCHEDULED MAINTENANCE TABLE ...............................................................................................................................................23
SQUEEGEE CLEANING .....................................................................................................................................................................24
SQUEEGEE BLADE CHECK AND REPLACEMENT..........................................................................................................................25
BRUSH/PAD CLEANING.....................................................................................................................................................................26
VACUUM SYSTEM MOTOR FILTER CLEANING...............................................................................................................................26
SOLUTION/CLEAN WATER FILTER CLEANING ...............................................................................................................................26
TANK AND VACUUM GRID WITH FLOAT CLEANING, AND COVER GASKET CHECK...................................................................27
DETERGENT TANK CLEANING .........................................................................................................................................................28
BRUSH/PAD-HOLDER/CYLINDRICAL BRUSH DECK DISASSEMBLY/ASSEMBLY ........................................................................29
BATTERY CHARGING ........................................................................................................................................................................30
MACHINE WORKING HOUR CHECK ...............................................................................................................................................32
FUSE CHECK/REPLACEMENT..........................................................................................................................................................32
ACCESSORIES/OPTIONS FOR FOCUS II..............................................................................................................................................33
ACCESSORIES/OPTIONS..................................................................................................................................................................33
TROUBLESHOOTING..............................................................................................................................................................................33
SCRAPPING........................................................................................................................................................................................33
Parts List ..................................................................................................................................................................................................99
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Operator’s Manual - FOCUS®II L17 - S20 - L20 - L20 Cyl. - BOOST®L20 3
OPERATOR SAFETY INSTRUCTIONS
DANGER! It indicates a dangerous situation with risk of death for the operator.
WARNING! It indicates a potential risk of injury for people or damage to objects.
CAUTION! It indicates a caution related to important or useful functions.
Pay careful attention to the paragraphs marked by this symbol.
DANGER! Disconnect the batteries before performing any maintenance/repair procedure.
DANGER! This machine must be used by properly trained and authorized personnel only. Children or disabled
people cannot use this machine.
DANGER! Keep the batteries away from sparks, ames and incandescent material. During normal operation,
explosive gases are released.
DANGER! Do not wear jewelry when working near electrical components.
DANGER! Do not work under the lifted machine without supporting it with safety stands.
DANGER! Do not operate the machine near toxic, dangerous, ammable and/or explosive powders, liquids or
vapors.
DANGER! 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 bare ames.
WARNING! Before using the battery charger, ensure that frequency and voltage values, indicated on the machine
serial number plate, match the electrical mains voltage.
WARNING! 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. Do not run the machine on the battery charger cable. Keep the battery charger cable
away from heated surfaces.
WARNING! Do not charge the batteries if the battery charger cable or plug is 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.
WARNING! To reduce the risk of re, 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.
WARNING! Do not smoke while charging the batteries.
WARNING! Always protect the machine against the sun, rain and bad weather, both under operation and inactivity
condition. Store the machine indoors.
WARNING! Do not allow to be used as a toy. Close attention is necessary when used near children.
WARNING! Use only as shown in this Manual. Use only Clarke's recommended accessories.
WARNING! Take all necessary precautions to prevent hair, jewelry and loose clothes from being caught by the
machine moving parts.
WARNING! Do not leave the machine unattended without being sure that it cannot move independently.
WARNING! Do not use the machine on slopes with a gradient exceeding the specications.
WARNING! Do not use the machine in particularly dusty areas.
WARNING! While using this machine, take care not to cause harm to people or damage to objects.
WARNING! Do not bump into shelves or scaffoldings, especially where there is a risk of falling objects.
WARNING! Do not put any can containing uids on the machine.
WARNING! The machine operating temperature must be between +32°F and +104°F (0°C and +40°C).
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4Operator’s Manual - FOCUS®II L17 - S20 - L20 - L20 Cyl. - BOOST®L20
WARNING! The machine storage temperature must be between +32°F and +104°F (0°C and +40°C).
WARNING! The humidity must be between 30% and 95%.
WARNING! Do not use the machine as a means of transport.
WARNING! Do not use the machine on slopes with an inclination higher than 2%.
WARNING! Do not allow the brushes to operate while the machine is stationary to avoid damaging the oor.
WARNING! In case of re, use a powder re extinguisher, not a water one.
WARNING! Do not tamper with the machine safety guards and follow the routine maintenance instructions
scrupulously.
WARNING! 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.
WARNING! Do not remove or modify the plates afxed to the machine.
WARNING! If the machine is used according to the instructions, the vibrations are not dangerous. The machine
vibration level is less than 98.42 in/s2(2.5 m/s2) (98/37/EEC - EN 1033/1995).
WARNING! This machine cannot be used on roads or public streets.
WARNING! Pay attention during machine transportation when temperature is below freezing point. The water in the
recovery tank or in the hoses could freeze and seriously damage the machine.
WARNING! Use the brushes and pads supplied with the machine and those specied in the Operator's Manual.
Using other brushes or pads could reduce safety.
WARNING! In case of machine malfunctions, ensure that these are not due to lack of maintenance. If necessary,
request assistance from the authorized personnel or from an authorized Service Center.
WARNING! If parts must be replaced, require ORIGINAL spare parts from an authorized Dealer or Retailer.
WARNING! To ensure machine proper and safe operation, the scheduled maintenance shown in the relevant chapter
of this Manual, must be performed by the authorized personnel or by an authorized Service Center.
WARNING! Carefully read all the instructions before performing any maintenance/repair procedure.
WARNING! Do not wash the machine with direct or pressurized water jets, or with corrosive substances.
WARNING! The machine must be disposed of properly, because of the presence of toxic-harmful materials
(batteries, etc.), which are subject to standards that require disposal in special centers (see Scrapping
chapter).
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INTRODUCTION
FOCUS II model of Clarke scrubber-dryer ensures a highly effective oor cleaning performance.
FOCUS II L17 model is equipped with a single rotary brush to clean an area of 17.0 in (430 mm) in width.
FOCUS II S20 and FOCUS II L20 model is equipped with a single rotary brush to clean an area of 20 in (508 mm) in width.
FOCUS II L20 Cyl. model is equipped with two cylindrical brushes to clean an area of 20 in (508 mm) in width.
FOCUS II BOOST L20 model is equipped with a single orbital rectangular pad to clean an area of 20 in (508 mm) in width
The rear squeegee performs the oor cleaning and the vacuum system recovers the washing water in a single pass.
HOW TO KEEP THIS MANUAL
The Operator's Manual must be kept near the machine, inside an adequate case, away from liquids and other substances that can
cause damage to it.
IDENTIFICATION DATA
The machine model and the serial number are marked on the plate. (AI. Fig. 2 - page 9).
The machine production year is indicated by the rst two gures of the machine serial number.
This information is useful when requiring machine spare parts. Use the following table to write down the machine identication data for
any further reference.
MACHINE model ...............................................................................
MACHINE Serial Number ..................................................................
CHANGES AND IMPROVEMENTS
Clarke constantly improves its products and reserves the right to make changes and improvements at its discretion without being
obliged to apply such benets to the machines previously sold.
Any change and/or addition of accessories must be approved and performed by Clarke.
UNPACKING
To unpack the machine carefully follow the instructions on the packing.
Upon delivery carefully check that the machine and its packing have not been 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 ll in a damage claim.
Please check that the following items have been supplied with the machine:
Technical documents:1.
Scrubber-dryer Instructions for Use Manual•
Electronic battery charger Manual•
No. 2 lamellar fuses2.
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TECHNICAL DATA
Model FOCUS II L17 FOCUS II S20 FOCUS II L20 FOCUS II L20 Cyl. FOCUS II BOOST®L20
Working Voltage 24 V DC
Standard Batteries (2) 12 V - 130 Ah@20hr Wet
Optional Batteries (2) 12V 114 Ah@20hr rating AGM
Drive System Motor 0.3 hp (200 W) —0.3 hp (200 W)
Drive Speed (variable) 0 to 3.5 mph
(0 to 5.6 km/h)
Determined by brush
rotation
0 to 3.5 mph
(0 to 5.6 km/h)
Battery Protection System Low Voltage Cut-Off of Brush and Solution
Vacuum Motor Power 0.5 hp, 2 stages, tangential discharge
Vacuum Capacity 41.5 in H2O (1.055 mm H2O)
Solution & Rec. Tanks 14.5 US gal (55 liters)
Solution Flow (min/max) 0 - 0.63 gal/min
(0 - 2.4 liter/min)
0 - 0.3 gal/min
(0 - 0.75 liter/min)
Squeegee Width 29.9 in. (760 mm)
Cleaning Width 17 in. (430 mm) 20 in. (508 mm)
Brush Motor Power 0.7 hp (480 W) (2) @ 0.4 hp (300 W) ea 0.75 hp (560 W)
Cylindrical Brush Size — — — 4.3 x 19.1 in.
(110 x 485 mm)
BOOST®Pad Size — — — — 14 x 20 in.
(457 x 508 mm)
Brush Speed 153 rpm 570 rpm 2250 rpm
Brush Pressure 45 and 90 lbs (20 and 41 kg) 58.4 lbs (26.5 kg) 40 and 75 lbs
(18 and 34 kg)
Front Wheel Pressure
on the oor 116 psi (0.8 N/mm2)
Rear Wheel Pressure
on the oor 884.7 psi (6.1 N/mm2)406.1 psi (2.8 N/m m2)884.7 psi (6.1 N/mm2)
On-Board Battery Charger Standard
Gradeability 2%
Machine Length 52.1 in. (1.323 mm) 49.3 in. (1,253 mm) 51 in. (1.295 mm)
Machine Width without
Squeegee 21.3 in. (541 mm) 22.7 in. (575.5 mm) 20.8 in. (528 mm)
Machine Height 42.8 in. (1.088 mm)
Weight w/o Batteries and with
empty tanks 209.4 lbs (95 kg) 191.8 lbs (87 kg) 209.4 lbs (95 kg) 231.5 lbs (105 kg) 203 lbs (92 kg)
Weight with batteries and full
tanks 531.3 lbs (241 kg) 515.9 lbs (234 kg) 531.3 lbs (241 kg) 553.4 lbs (251 kg) 525 lbs (238 kg)
Sound level 65.8 dB(A)
Battery compartment size
(width x length x height) 13.8 x 13.8 x 11.8 in. (350 x 350 x 300 mm)
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MACHINE TRANSPORT PROCEDURES
How to load and unload the machine from a van or a
truck
WARNING!
This machine is heavy. Machine transport must be
performed by qualied personnel only. Machine
transport on steep ramps must be performed by two
well-trained operators only. Always move it slowly.
Do not turn the machine on slopes. Do not leave the
machine unattended on slopes. Loading ramp width
must not be less than 40 in (1 m).
Check that the loading ramp is not longer than 8 feet (2.5 1.
m) and not wider than 40 in (1 m). Its thickness must be
adequate to support the machine and operators’ weight.
Check that the ramp is dry and clean.2.
Position the ramp properly.3.
Before loading the machine, remove the squeegee assembly4.
and the brush/pad-holder. Before loading the machine,
empty both the solution and the recovery water tank.
How to Fasten the Machine Inside the Vehicle
Clarke recommends to fasten the machine with belts during 5.
transportation.
Figure 1
SYMBOLS SHOWN ON THE MACHINE
WARNING!
Carefully read all instructions before performing any procedure.
WARNING!
Do not wash the machine with direct or pressurized water jets.
WARNING!
Do not use the machine on slopes exceeding the specications.
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MACHINE DESCRIPTION
OUTER AND INNER STRUCTURE
(See Fig. 2)
Control panelA.
HandlebarB.
Brush/forward gear switch (*). Brush switch (***)C.
Speed adjuster (*)D.
Battery charger data inspection windowE.
Battery charger cableF.
Battery charger cable holderG.
Solution/clean water rear ller neckH.
Reverse gear switchI.
Squeegee lifting/lowering leverJ.
Deck lifting/lowering pedalK.
K1. Deck lifting
K2. Deck lowering
K3. Extra pressure activation (optional) (***)
Battery connector (red). This connector also works as L.
EMERGENCY switch, to stop immediately all functions.
Rear steering wheelM.
Front wheels on xed axle. Driving wheels (*)N.
Squeegee vacuum hoseO.
Recovery water drain hoseP.
Solution/clean water drain and level check hoseQ.
Deck with one brush/pad-holderR.
Deck with two cylindrical brushesS.
Brush/pad-holderT.
Solution/clean water tankU.
Recovery water tankV.
Recovery water tank coverW.
Can holderX.
Solenoid valveY.
SqueegeeZ.
Squeegee knobsAA.
Squeegee balance adjusting knobAB.
Machine straight forward movement adjusting pin AC.
Machine forward speed adjusting pin (***) AD.
Recovery water tank cover (open)AE.
Tank cover gasketAF.
Cover movable retaining plateAG.
Cover xed retaining plate (do not remove!)AH.
Serial number plate/technical dataAI.
Squeegee vacuum hose cleaning holeAJ.
Vacuum grid with automatic shut-off oatAK.
Solution/clean water front ller neckAL.
Grid lter (optional)AM.
Compensation holeAN.
Recovery water tank (open)AO.
Recovery water drain hose plugAP.
Tank safety cableAQ.
Vacuum system motor coverAR.
Vacuum system motor sound-deadening lterAS.
Detergent tank (**)AT.
Detergent tank ller plug (**)AU.
Detergent tank handle (**)AV.
Detergent feed hose (**)AW.
Detergent pump (**)AX.
Detergent tank - pump connecting hose (**)AY.
Detergent pump holder (**)AZ.
BatteriesBA.
Battery capsBB.
Solution lter BC.
Solution/clean water tapBD.
Reference table for detergent proportioning (**)BE.
Battery connection diagramBF.
(*) Only for FOCUS II L17 - L20 - L20 Cyl. - BOOST L20
(**) Only for machines with Chemical Mixing System (optional)
(***) Only for FOCUS II S20
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Operator’s Manual - FOCUS®II L17 - S20 - L20 - L20 Cyl. - BOOST®L20 9
Figure 2
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10 Operator’s Manual - FOCUS®II L17 - S20 - L20 - L20 Cyl. - BOOST®L20
CONTROL PANEL
(See Fig. 3)
Brush/pad-holder and vacuum system switchA.
Brush/pad-holder and vacuum system switch warning lightB.
Vacuum system switchC.
Vacuum system switch warning lightD.
Brush/pad-holder release switchE.
Brush/pad-holder release switch warning lightF.
Detergent ow control knob (optional)G.
Reverse gear switchH.
Hour meter (optional)I.
Ignition key (0 - I)J.
Battery charge indicatorK.
Charged battery warning light (green)L.
Semi-discharged battery warning light (yellow)M.
Discharged battery warning light (red)N.
Washing water ow control switchesO.
Flow increase switchP.
Flow decrease switchQ.
Washing water ow indicatorR.
Brush/forward gear switch (*). Brush switch (***)S.
Speed adjuster (*)T.
(*) Only for FOCUS II L17 - L20 - L20 Cyl. - BOOST L20
(**) Only for machines with Chemical Mixing System (optional)
(***) Only for FOCUS II S20
Electronic battery chargerA.
Lead (WET) or AGM (GEL) battery selectorB.
Green warning light (ON: the battery charger is on and C.
batteries are charged)
Yellow warning light (ON: the battery charger is on and D.
batteries are semi-discharged)
Red warning light (ON: the battery charger is on and it is E.
charging the batteries)
Figure 4
Figure 3
BATTERY CHARGER DATA INSPECTION WINDOW
(See Fig. 4)
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Operator’s Manual - FOCUS®II L17 - S20 - L20 - L20 Cyl. - BOOST®L20 11
USE
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 particular
attention to the symbols shown on the plates.
Do not cover these plates for any reason and immediately replace
them if damaged.
BATTERY CHECK/SETTING ON A NEW MACHINE
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 qualied personnel only. Set
the function electronic board and the built-in battery
charger according to the type of batteries used (WET
or AGM batteries).
Check the batteries for damage before installation.
Disconnect the battery connector (A, Fig. 5) and the
battery charger plug (I).
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 diagram (A, Fig. 6).
The machine can be supplied in one of the following modes:
Batteries (WET or AGM) already installed and chargedA)
Check that the batteries are connected to the machine with 1.
the connector (A, Fig. 5).
Insert the ignition key (B) and turn it to "I".2.
If the green warning light (C) turns on, the batteries are
charged.
If the yellow (D) or red warning light (E) turns on,
the batteries must be charged (see the procedure in
Maintenance chapter).
Without batteriesB)
Buy appropriate batteries (see the Technical Data 1.
paragraph).
For battery choice and installation, apply to qualied battery 2.
Retailers.
Set the machine and the battery charger according to the3.
type of batteries (WET or AGM), as shown in the next
paragraph.
Figure 5
Figure 6
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12 Operator’s Manual - FOCUS®II L17 - S20 - L20 - L20 Cyl. - BOOST®L20
BATTERY INSTALLATION AND BATTERY TYPE
SETTING (WET OR AGM)
According to the type of batteries (WET or AGM), set the machine
and electronic board of the battery charger as follows:
Machine setting
Turn the ignition key (A, Fig. 7) to “I” and in the very rst 1.
seconds of machine operation pay attention to the following:
If the green warning light (B) is ashing, the machine is •
set to AGM.
If the red warning light (C) is ashing, the machine is set •
to WET.
If the setting is to be changed, perform the following2.
procedure.
Turn off the machine and turn the ignition key (A) to "0".3.
Press and hold the switches (D) and (E) at the same time,4.
then turn the ignition key (80) to "I".
Continue to hold switches (D) and (E) until warning light (B)5.
or (C) starts blinking.
Immediately release the switches and press the middle6.
switch (E) to toggle to the other setting. (this must be done
while the light is blinking to change the setting). Cycle the
key switch to check.
Battery charger setting
Remove the battery charger data inspection window screws7.
(F).
Remove the inspection window (G).8.
Turn the battery charger selector (H) to WET position for lead9.
batteries, or to GEL position for AGM batteries.
Install the inspection window (G) and tighten the screws (F).10.
Battery installation
Open the cover (I) and check that the recovery water tank (J)11.
is empty, otherwise empty it with the drain hose (K).
Carefully lift the tank (A, Fig. 8).12.
Install the batteries (B).13.
Battery charging
Charge the batteries (see the procedure in Maintenance14.
chapter). Figure 7
Figure 8
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Operator’s Manual - FOCUS®II L17 - S20 - L20 - L20 Cyl. - BOOST®L20 13
BEFORE START-UP
Brush/pad-holder deck or cylindrical brush deck
installation/removal
On the machine it is possible to install/remove either the brush/
pad-holder deck (A, Fig. 9) or the cylindrical brush deck (E).
For deck installation/removal see the procedure in Maintenance
chapter.
Brush/pad-holder installation/removal
According to the kind of cleaning to be performed, the 1.
machine can be equipped either with brushes (B) or pad-
holders (C) with pads (D) together with the appropriate deck.
Insert the ignition key (A, Fig. 10) and turn it to "I".2.
If equipped, turn the speed adjuster (B) to idle by turning it 3.
counter-clockwise.
Place the brushes (B, Fig. 9) or the pad-holder (C) under the 4.
17 in / 20 in (430 mm / 530 mm) deck (A).
Lower the deck on the brushes/pad-holders by pressing the 5.
pedal (C, Fig. 10).
Turn the ignition key (A) to "I".6.
Press the brush/pad-holder switch (D).7.
Press one of the switches (E) to engage the brush/pad-8.
holder, then release it. If necessary, repeat the procedure
until the brushes/pad-holders are engaged.
WARNING!
(Only for FOCUS II L17, FOCUS II L20): Turn the
speed adjuster (B, Fig. 10) counter-clockwise to drive
the machine at the minimum speed.
To engage the brush/pad-holder press the switch (E)
which turns on the brush/pad-holder motor.
To remove the brushes/pad-holders, the deck must be lifted 9.
by pressing the pedal (C), then press the switch (F) and wait
for the brush/pad-holder to fall on the oor.
Turn the ignition key (A) to "0".
Figure 9
Figure 10
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14 Operator’s Manual - FOCUS®II L17 - S20 - L20 - L20 Cyl. - BOOST®L20
Types of brushes available
17 in (430 mm) models 20 in (508 mm) models
Light Grit Light Grit
Medium Grit Medium Grit
Polypropylene Polypropylene
Lite Poly Lite Poly
Brush/pad application guide (suggestions only)
Models Light Grit Medium Grit Polypropylene Lite Poly
General cleaning:
Concrete
Terrazzo oor
Ceramic tiles/quarrystones
Marble
Vinyl tiles
Rubber tiles
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Operator’s Manual - FOCUS®II L17 - S20 - L20 - L20 Cyl. - BOOST®L20 15
Cylindrical brush installation/removal (only for FOCUS
II L20 Cyl.)
Turn the ignition key (A, Fig. 11) to "0".1.
Lift the cylindrical brush deck by pressing the pedal (B).2.
Turn the knobs (A, Fig. 12) and remove the doors (B) by3.
pushing them downwards and pressing on the knobs.
Install the cylindrical brushes (C).4.
The cylindrical brushes can be installed on either sides.
Install the doors (B) and fasten them with the knobs (A).5.
To remove the cylindrical brushes, perform steps 1 to 5 in the 6.
reverse order.
Figure 11
Figure 12
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16 Operator’s Manual - FOCUS®II L17 - S20 - L20 - L20 Cyl. - BOOST®L20
Types of cylindrical brushes available
19.1 in (485 mm) models
Poly Plus 0.40
Polypropylene 0.45
Medium Grit
Cylindrical brush application guide (suggestions only)
Models Poly Plus Polypropylene Medium Grit
General cleaning:
Concrete
Terrazzo oor
Ceramic tiles/quarrystones
Marble
Vinyl tiles
Rubber tiles
Squeegee installation
Install the squeegee (A, Fig. 13) and fasten it with the knobs 1.
(B), then connect the vacuum hose (C) to the squeegee.
Adjust the squeegee with the knob (D) so that the rear blade 2.
touches the oor along all its length.
Figure 13
Guide to match squeegees and brush/pad-holder/cylindrical brush decks
Deck model Squeegee model
Deck with one brush, brush diameter: 17in (430 mm)
Aluminum (A, Fig 13), width 29.9 in (760 mm)
Deck with one brush, brush diameter: 20 in (508 mm)
Deck with two brushes, brush length: 19,1 in (485 mm)
Deck with one brush rectangular, brush width: 20 in (508 mm)
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Solution or washing water tank lling
NOTE
If the machine is equipped with Chemical Mixing System
(optional) the tank must be lled with clean water,
otherwise the tank must be lled with solution.
Open the ller neck (A, Fig.14).1.
(2. For machines without Chemical Mixing System)
Use the front ller neck (B) or the rear ller neck (C) to ll the
tank (D) with a solution suitable for the work to be performed.
Rell to the reference mark “1” of the level check hose (H).
Always follow the dilution instructions on the label of the
chemical product used to prepare the solution.
The solution temperature must not exceed +104°F (+40°C).
WARNING!
Use only low-foam and non-ammable detergents,
intended for automatic scrubber applications.
(3. For machines with Chemical Mixing System)
Fill the tank (D) with clean water by using the ller neck (B)
or the rear ller neck (C).
Rell to the reference mark “1” of the level check hose (H).
The water temperature must not exceed +104°F (+40°C).
Detergent tank lling (For machines with Chemical
Mixing System)
Open the cover (E) and check that the recovery water tank 1.
(F) is empty, otherwise empty it with the drain hose (G).
Carefully lift the tank (A, Fig. 15).2.
Open the cap (B).3.
Replace or ll the jug (C) with any standard gallon container 4.
of detergent suitable for the work to be performed (highly
concentrated detergents).
Do not ll the detergent tank completely, leave a few
centimeters from the edge.
WARNING!
Use only low-foam and non-ammable detergents,
intended for automatic scrubber applications.
NOTE
To install a new jug container, determine the cap size and
if it is the smaller cap, remove the reducing adapter from
the hose cap (B). Insert the suction tube into the jug (C).
Pushdown rmly on the cap (B) and twist at the same
time to put the cap back onto the jug (C).
In case of new system, system emptied for cleaning, etc.,
wait for the hoses to ll up, before starting the Chemical
Mixing System.
Figure 14
Figure 15
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18 Operator’s Manual - FOCUS®II L17 - S20 - L20 - L20 Cyl. - BOOST®L20
MACHINE START AND STOP
Starting the machine
Prepare the machine as shown in the previous paragraph.1.
Insert the ignition key (A, Fig. 16) and turn it to "I".2.
Check that the green warning light (B) turns on (charged
battery).
If the yellow (C) or red warning light (D) turns on, turn the
ignition key back to “0” and charge the batteries (see the
procedure in Maintenance chapter).
Drive the machine to the working area:3.
By pushing it with the hands on the handlebar (E) (only •
for FOCUS II S20).
By pushing it with the hands on the handlebar (E) and •
pressing the switch (F) to move forward, or pressing the
switch (F) together with the switch (G) to move backward
(only for FOCUS II L17, FOCUS II L20, FOCUS II L20
Cyl., BOOST L20).
The forward speed can be adjusted with the adjuster (H).
Lower the squeegee (I) with the lever (J).4.
Lower the brush/pad-holder deck (K) by pressing the pedal 5.
(L).
Press the brush/pad-holder switch (M) and the vacuum 6.
system switch (N).
Press the washing water ow control switches (O) as 7.
necessary, depending on the type of cleaning to be
performed.
Start cleaning:8.
(Only for• FOCUS II S20) by pushing the machine with the
hands on the handlebar (E) and pressing the switch (F).
(Only for• FOCUS II L17, FOCUS II L20, FOCUS II L20
Cyl., BOOST L20) by pushing the machine with the
hands on the handlebar (E) and by pressing the switch
(F). If necessary, the forward speed can be adjusted with
the adjuster (H).
NOTE
To move the machine forward, press either the left or
right switch (F) or both.
Stopping the machine
Stop the machine by using the handlebar (E) (Only for 9.
FOCUS II S20).
Stop the machine by releasing the switches (F) (Only for
FOCUS II L17, FOCUS II L20, FOCUS II L20 Cyl., BOOST
L20).
Stop the brushes and the vacuum system by pressing the 10.
switch (M). The vacuum system stops after a few seconds.
Lift the brush/pad-holder deck (K) by pressing the pedal (L).11.
Lift the squeegee (I) with the lever (J).12.
Turn the ignition key (A) to "0".13.
Make sure that the machine cannot move independently. ù14.
Figure 16
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Operator’s Manual - FOCUS®II L17 - S20 - L20 - L20 Cyl. - BOOST®L20 19
MACHINE OPERATION (SCRUBBING/DRYING)
Start the machine as shown in the previous paragraph.1.
If necessary, press the washing water ow control switches 2.
(A and B, Fig. 17) as necessary, depending on the type of
cleaning to be performed.
If necessary, stop the machine and adjust the squeegee 3.
with the knob (C) so that the rear blade (D) touches the oor
along all its length.
Machine drive controls
CAUTION!
These procedures must be performed by qualied
personnel or Clarke personnel only.
The machine speed and forward movement capability depends on
the oor type and on the choice of using brush or pad.
These can be adjusted by two screws (B and D, Fig.18), which
are on the brush plate, according to the following procedure:
Loosen the nut (A); when turning the adjusting screw (B) –
counter-clockwise, the machine moves towards the left;
when turning it clockwise the machine moves towards the
right.
(Only for– FOCUS II S20) loosen the nut (C); when turning the
adjusting screw (D) counter-clockwise, the machine speed
increases; when turning it clockwise the machine speed
decreases.
When the procedure is completed, tighten the nuts (A and/or C).
Figure 17
Figure 18
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