SC450 - Uncategorized NILFISK - Free user manual and instructions

USER MANUAL SC450 NILFISK

CONSERVATION DU MANUEL

MANUAL PURPOSE AND CONTENTS

The purpose of this Manual is to provide the operator with all necessary information to use the machine properly, in a safe and autonomous way. It contains information about technical data, safety, operation, storage, maintenance, spare parts and disposal. Before performing any procedure on the machine, the operators and qualied technicians must read this Manual carefully. Contact Nilsk in case of doubts concerning the interpretation of the instructions and for any further information. TARGET This Manual is intended for operators and technicians qualied to perform the machine maintenance. The operators must not perform procedures reserved for qualied technicians. Nilsk will not be answerable for damages coming from the non-observance of this prohibition.

HOW TO KEEP THIS MANUAL

The Instruction for use Manual must be kept near the machine, inside an adequate case, away from liquids and other substances that can cause damage to it.

DECLARATION OF CONFORMITY

The Declaration of Conformity, supplied with the machine, certies the machine conformity with the law in force. NOTE Two copies of the original declaration of conformity are provided together with the machine documentation. IDENTIFICATION DATA The machine serial number and model name are marked on the plate (29). Product number and year of production are marked on the same plate. This information is useful when requiring machine spare parts. Use the following table to write down the machine identication data. MACHINE model ............................................................................... PRODUCT code ................................................................................ MACHINE serial number ...................................................................

OTHER REFERENCE MANUALS

Electronic Battery Charger Manual (if equipped), to be considered as integral part of this Manual. Moreover, the following Manuals are available: – Service Manual (that can be consulted at Nilsk Service Centers) – Spare Parts List (supplied with the machine)

SPARE PARTS AND MAINTENANCE

All necessary operating, maintenance and repair procedures must be performed by qualied personnel or by Nilsk Service Centers. Only original spare parts and accessories must be used. Contact Nilsk for service or to order spare parts and accessories, specifying the machine model, product code and serial number.INSTRUCTION FOR USE ENGLISH 9099589000 - SC450 3 8/12

CHANGES AND IMPROVEMENTS

Nilsk constantly improves its products and reserves the right to make changes and improvements at its discretion without being obliged to apply such benets to the machines that were previously sold. Any change and/or addition of accessory must be approved and performed by Nilsk. OPERATION CAPABILITIES This scrubber-dryer is used to clean (scrubbing and drying) smooth and solid oors, in civil or industrial environment, under safe operation conditions by a qualied operator. The scrubber-dryer cannot be used for tted carpet and carpet cleaning. CONVENTIONS Forward, backward, front, rear, left or right are intended with reference to the operator’s position, that is to say in driving position with the hands on the handlebar (2). UNPACKING/DELIVERY To unpack the machine, carefully follow the instructions on the packing. When the machine is delivered, check that the packing and the machine were not damaged during transportation. In case of visible damages, keep the packing and have it checked by the carrier that delivered it. Call the carrier immediately to ll in a damage claim. Please check that the following items have been supplied with the machine: – Technical documents:

• Scrubber-dryer Instruction for use Manual

• Electronic Battery Charger Manual (if equipped)

• Scrubber-dryer Spare Parts List – No. 1 connector for battery charger (for machines without on board battery charger) – No. 2 lamellar fuses SAFETY The following symbols indicate potentially dangerous situations. Always read this information carefully and take all necessary precautions to safeguard people and property. The operator’s cooperation is essential in order to prevent injury. No accident prevention program is effective without the total cooperation of the person responsible for the machine operation. Most of the accidents that may occur in a factory, while working or moving around, are caused by failure to comply with the simplest rules for exercising prudence. A careful and prudent operator is the best guarantee against accidents and is essential for successful completion of any prevention program.

VISIBLE SYMBOLS ON THE MACHINE

WARNING! Carefully read all the instructions before performing any operation on the machine. WARNING! Do not wash the machine with direct or pressurized water jets. max.2% WARNING! Do not use the machine on slopes with a gradient exceeding the specications.ENGLISH INSTRUCTION FOR USE 4 SC450 - 9099589000 8/12

SYMBOLS THAT APPEAR ON THIS MANUAL

DANGER! It indicates a dangerous situation with risk of death for the operator. WARNING! It indicates a potential risk of injury for people. CAUTION! It indicates a caution or a remark related to important or useful functions. Pay careful attention to the paragraphs marked by this symbol. NOTE It indicates a remark related to important or useful functions. CONSULTATION It indicates the necessity to refer to the Instruction for use Manual before performing any procedure. GENERAL INSTRUCTIONS Specic warnings and cautions to inform about potential damages to people and machine are shown below. DANGER! – Before performing any cleaning, maintenance, repair or replacement procedure, turn the machine main switches to “0” and disconnect the battery connector. – This machine must be used by properly trained operators only. – Do not wear jewels when working near electrical components. – Do not work under the lifted machine without supporting it with safety stands. – Do not operate the machine near toxic, dangerous, ammable and/or explosive powders, liquids or vapours: This machine is not suitable for collecting dangerous powders. – When using lead (WET) batteries, keep sparks, ames and smoking materials away from the batteries. During the normal operation explosive gases are released. – When using lead (WET) batteries, battery charging produces highly explosive hydrogen gas. During battery charging, remove the recovery tank and perform this procedure in well-ventilated areas and away from naked ames. WARNING! – Carefully read all the instructions before performing any maintenance/repair procedure. – Before using the battery charger, ensure that frequency and voltage values, indicated on the machine serial number plate, match the electrical mains voltage. – Do not 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. – Do not charge the batteries if the battery charger cable or the plug are damaged. If the machine is not working as it should, has been damaged, left outdoors or dropped into water, return it to the Service Center. – 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. – Do not smoke while charging the batteries.INSTRUCTION FOR USE ENGLISH 9099589000 - SC450 5 8/12 WARNING! – Always protect the machine against the sun, rain and bad weather, both under operation and inactivity condition. Store the machine indoors, in a dry place: This machine must be used in dry conditions, it must not be used or kept outdoors in wet conditions. – Before using the machine, close all doors and/or covers as shown in the Instruction for use Manual. – This machine is not intended for use by persons (including children) 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 machine by a person responsible for they safety. Children should be supervised to ensure that they do not play with the machine. – Close attention is necessary when used near children. – Use only as shown in this Manual. Use only Nilsk’s recommended accessories. – Check the machine carefully before each use, always check that all the components have been assembled before use. If the machine is not perfectly assembled it can cause damages to people and properties. – Take all necessary precautions to prevent hair, jewels and loose clothes from being caught by the machine moving parts. – Do not use the machine on slopes with a gradient exceeding the specications. – Do not use the machine on incline. – Do not use the machine on slopes with a gradient exceeding the specications. – Do not use the machine in particularly dusty areas. – Use the machine only where a proper lighting is provided. – While using this machine, take care not to cause damage to people or objects. – Do not bump into shelves or scaffoldings, especially where there is a risk of falling objects. – Do not lean liquid containers on the machine, use the relevant can holder. – The machine working temperature must be between 0 °C and +40 °C. – The machine storage temperature must be between 0 °C and +40 °C. – The humidity must be between 30% and 95%. – When using oor cleaning detergents, follow the instructions on the labels of the detergent bottles. – To handle oor cleaning detergents, wear suitable gloves and protections. – Do not use the machine as a means of transport. – Do not allow the brush/pad to operate while the machine is stationary to avoid damaging the oor. – In case of re, use a powder re extinguisher, not a water one. – Do not tamper with the machine safety guards and follow the ordinary maintenance instructions scrupulously. – Do not allow any object to enter into the openings. Do not use the machine if the openings are clogged. Always keep the openings free from dust, hairs and any other foreign material which could reduce the air ow. – Do not remove or modify the plates afxed to the machine. – This machine cannot be used on roads or public streets. – 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. – Use brushes and pads supplied with the machine or those specied in the Instruction for use Manual. Using other brushes or pads could reduce safety. – In case of machine malfunctions, ensure that these are not due to lack of maintenance. If necessary, request assistance from the authorised personnel or from an authorised Service Center. – If parts must be replaced, require ORIGINAL spare parts from an Authorised Dealer or Retailer. – To ensure machine proper and safe operation, the scheduled maintenance shown in the relevant chapter of this Manual, must be performed by the authorised personnel or by an authorised Service Center. – Do not wash the machine with direct or pressurised water jets, or with corrosive substances. – 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 centres (see Scrapping chapter).ENGLISH INSTRUCTION FOR USE 6 SC450 - 9099589000 8/12 MACHINE DESCRIPTION MACHINE STRUCTURE

6. Rear parking wheel

7. Squeegee lifting/lowering lever

8. Battery connector (red).

This connector also works as EMERGENCY push-button, to stop immediately all functions.

9. Front wheels on xed axle

10. Squeegee vacuum hose

11. Recovery water drain hose

12. Solution drain and level check hose

17. Recovery tank cover

18. Recovery tank cover (half-open)

19. Recovery tank cover (completely opened)

22. Squeegee mounting handwheels

27. Machine in parking position

30. Vacuum grid with automatic shut-off oat

33. Vacuum system motor

usage, for a washing autonomy set for ~ 90 minutes)

(*) Only with battery charger (optional) installed 8/12 Revised 4/14INSTRUCTION FOR USE ENGLISH 9099589000 - SC450 7 8/12 MACHINE STRUCTURE (Continues)

42. Vacuum system switch

43. Battery charge indicator

44. Green LED - charged battery

50. Green warning light (the battery charger is on and batteries

51. Yellow warning light (the battery charger is on and

batteries are semi-discharged) (*)

52. Red warning light (the battery charger is on and it is

charging the batteries) (*) (*) Only with battery charger (optional) installed CONTROL PANEL max.2%

P100659 ACCESSORIES/OPTIONS In addition to the standard components, the machine can be equipped with the following accessories/options, according to the machine specic use: – GEL batteries – Electronic battery charger – Brushes of different materials – Pads of different materials – Polyurethane squeegee blades – Removable solution feed hose For further information concerning the optional accessories, contact an authorised Retailer. 8/12 Revised 4/14INSTRUCTION FOR USE ENGLISH 9099589000 - SC450 9 8/12 TECHNICAL DATA Model SC450 Solution tank capacity 40 litres Recovery tank capacity 45 litres Machine length 1,180 mm Machine width without squeegee 559 mm Machine height 1,060 mm Cleaning width 530 mm Squeegee width 760 mm Brush diameter 530 mm Front wheel diameter 254 mm Wheel specic pressure on the oor 4.9 N/mm

Maximum gradient when working 2 % Protection class (IP) X4 Protection class (electric) III Vacuum system motor power 330 W Vacuum system circuit capacity 1,100 mm H

Battery charger connector (optional) CH Battery charger (optional) EB1 Function electronic board EB2 Electronic board LEDs ES1 Brush/pad motor electromagnetic switch ES2 Vacuum system motor relay EV1 Solution solenoid valve

9099589000 - SC450 11 8/12 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 (see Visible Symbols On The Machine paragraph). 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 qualied personnel only. Set the battery charger (optional) according to the battery type (WET or GEL/AGM). Check the batteries for damage before installation. Disconnect the battery connector and the battery charger plug. Handle the batteries with great care. Install the battery terminal protection caps supplied with the machine. The machine requires two 12 V batteries, connected according to the diagram (28). The machine can be supplied in one of the following modes: WET or GEL/AGM batteries already installed and ready to be used 1. Turn on the machine by pressing the brush/pad-holder and vacuum system switches (41 and 42). If the green LED (44) turns on, the batteries are ready to be used. 2. If the yellow or red LED (45 or 46) turns on, the batteries must be charged (see the procedure in Maintenance chapter). Without batteries 1. Buy appropriate batteries [See the Technical Data paragraph and the diagram (28)]. For battery choice and installation, apply to qualied battery Retailers. 2. Set the machine and the battery charger (if equipped) according to the type of batteries installed, according to the procedure shown in the following paragraph.ENGLISH INSTRUCTION FOR USE 12 SC450 - 9099589000 8/12

BATTERY INSTALLATION AND BATTERY TYPE

SETTING (WET OR GEL/AGM) Set the electronic board of the machine and of the battery charger (if equipped) according to the type of batteries installed (WET or GEL/AGM) as shown below: Machine Setting

1. Check that the battery connector (8) is disconnected.

The machine factory setting is for GEL batteries. If this setting corresponds to the type of batteries installed, go to step 7. Otherwise, perform steps 2, 3 and 4 too.

2. Move aside the recovery water drain hose (11).

3. Remove the battery charger cable, if equipped, from the

4. Remove the screws (A, Fig. 1) and carefully move aside

the panel (B) by disengaging the grommet (C) from its housing on the panel (B).

5. Turn the microswitch (D) to WET position.

WARNING! Do not move/set the adjacent switch (E).

6. Perform steps 3, 4 and 5 in the reverse order.

Battery Charger Setting (for machines with on-board battery charger)

7. Remove the battery charger data inspection window

9. Turn the battery charger selector (C) to WET for lead

batteries, or to GEL for gel/agm batteries.

10. Install the window (B) and tighten the screws (A).

Battery Installation

11. Remove the recovery tank (16) as shown in the relevant

12. Install the batteries on the machine according to the

diagram (28). CAUTION! For a proper machine balance, install the batteries in the compartment, with the shims placed on the rear wall.

13. Install the recovery tank (16).

14. Charge the batteries (see the procedure in Maintenance

Brush or pad-holder installation NOTE Install either the brush (A, Fig. 3) or the pad-holder (B and C) according to the type of oor to be cleaned.

1. Make sure that the switches (41 and 42) are turned to “0”.

2. Lift the brush/pad-holder deck (13) by prying the handlebar (2).

3. Place the brush (A, Fig. 3) or the pad-holder (B - C) under the deck.

4. Lower the deck (13) by using the handlebar (2).

5. Turn on the machine by pressing the switch (41).

6. Press the push-buttons (47) for a few seconds, to engage the brush/pad-holder to the deck hub (13). If necessary, repeat the procedure until the brush/pad-holder is engaged. Front

Figure 3 P100663 Available brushes and their relevant application guides (suggestions only) Models MIDLITE GRIT 180 MIDGRIT 240 PROLENE PROLITE UNION MIXGeneral cleaning:ConcreteTerrazzo oorCeramic tiles/quarrystonesMarbleVinyl tilesRubber tilesPolishing:Rubber tilesMarbleVinyl tiles Squeegee installation

7. Install the squeegee (21) and fasten it with the handwheels (22), then connect the vacuum hose (10) to the squeegee.

8. With the handwheel (23), adjust the squeegee so that the rear blade - in all its length - touches the oor and the front blade is slightly detached from the oor.ENGLISH INSTRUCTION FOR USE 14 SC450 - 9099589000 8/12 Solution tank lling CAUTION! Use only low-foam and non-ammable detergents, intended for automatic scrubber applications. WARNING! When using oor cleaning detergents, follow the instructions on the labels of the detergent bottles. To handle oor cleaning detergents, wear suitable gloves and protections. 9. Use the ller neck (31) or the removable ller hose (40, optional) to ll the tank (15) with a solution suitable for the work to be performed. Do not ll the solution tank completely, leave few centimetres from the edge. Always follow the dilution instructions on the label of the chemical product used to prepare the solution. The solution temperature must not exceed 40 °C.

MACHINE START AND STOP

Starting the machine

1. Prepare the machine as shown in the previous paragraph.

2. Drive the machine to the working place by pushing it with the hands on the handlebar (2).

3. Lower the squeegee (21) with the lever (7).

4. Turn the solution ow control lever (36) to one of the following positions, according to the type of cleaning to be performed:

• ECO system: when the lever (36) is turned to ECO position (37), the machine works in a special condition of programmed water “economy” usage; as the water ow is set and constant, the machine can work with a washing autonomy of ~ 90 minutes (0.4 litres/min average).

• Variable system: when the lever is turned to the left (variable ow) the ow rate can increase up to 1.6 litres/min (when the tank is full), with an autonomy of ~ 40 minutes.

5. Press the brush/pad-holder switch (41) and the vacuum system switch (42).

6. Press the push-buttons (47) to enable the brush/pad-holder.

7. Start cleaning, by moving the machine with the handlebar (2).

NOTE If the green LED (44) turns on, the machine is ready to be used. If the yellow or red LED (45 or 46) turns on, the batteries must be charged (see the procedure in Maintenance chapter). Stopping the machine

8. Stop the machine and the brush/pad-holder by releasing the push-buttons (47).

9. Turn off the brush/pad-holder and the vacuum system by pressing the switches (41) and (42).

10. Lift the squeegee (21) with the lever (7).

11. With the handlebar (2) slightly lower the machine until the rear wheel (6) comes into contact with the oor (parking position

1. Start the machine as shown in the previous paragraph.

2. While keeping both hands on the handlebar (2), press the push-buttons (47), then manoeuvre the machine and start

scrubbing/drying the oor.

3. If necessary, stop the machine and adjust the squeegee balancing handwheel (23).

4. If necessary, adjust the solution quantity by using the valve (36).

CAUTION! To avoid any damage to the oor surface, turn off the brush/pad-holder when the machine stops in one place. CAUTION! Before lifting the brush/pad, turn it off by releasing the push-buttons (47). NOTE For correct scrubbing/drying of oors at the sides of the walls, Nilsk suggests to go near the walls with the right side of the machine as shown in gure 4.

Figure 4 P100664 CAUTION! In case of brush/pad-holder motor overload, due to foreign bodies which prevent them from turning, or to excessively aggressive oors/brushes, the safety system stops the brush/pad-holder after about one minute of continuous overload. The overload is shown by the three LEDs (44, 45, 46) ashing simultaneously. To start scrubbing again after a brush/pad-holder stop due to overload, stop the machine by turning the brush/ pad-holder switch and the vacuum system switch (41 and 42) to “0”. Turn on the machine by turning the brush/ pad-holder switch and the vacuum system switch (41 and 42) to “I”. Battery discharge during operation 5. Until the green LED (44) stays on, the batteries allow the machine to work normally. When the green LED (44) turns off and the yellow and red LED (45) and (46) turn on in sequence, it is necessary to charge the battery as the machine residual autonomy is at the minimum level. CAUTION! Do not use the machine with discharged batteries, to avoid damaging the batteries and reducing the battery life. Machine speed adjustment

6. The machine speed varies according to the type of oor to be cleaned and the choice of using the brush or the pad. If

necessary, stop the machine and turn the forward speed adjusting handwheel (25) as shown below:

• Turn it counter-clockwise to increase the forward speed;

• Turn it clockwise to decrease the forward speed. Machine straight-forward drive 7. If it is difcult to keep the machine moving straight-forwardly because it deviates to the left or to the right, adjust the handwheel (24) by turning it clockwise or counter-clockwise.ENGLISH INSTRUCTION FOR USE 16 SC450 - 9099589000 8/12

MACHINE TRANSPORT/PARKING

To transport/park the machine, proceed as follows.

1. Turn the brush/pad-holder switch and the vacuum system switch (41 and 42) to “0”.

2. Lift the squeegee with the lever (7).

3. Grab the handlebar (2) and slightly lower it until the brush lifts from the oor. While holding the machine in this position, drive it to the appointed parking area. Then lower the machine until the rear wheel (6) comes into contact with the oor (parking position (27)).

4. When nishing working, remove the brush/pad-holder (see the procedure in Maintenance chapter).

TANK EMPTYING An automatic oat shut-off system (30) turns off the vacuum system when the recovery tank (16) is full. The vacuum system deactivation is signalled by a sudden increase in the vacuum system motor noise frequency, and the oor is not dried. CAUTION! If the vacuum system turns off accidentally (for example, when the oat is activated because of a sudden machine movement), to resume the operation: turn off the vacuum system by pressing the switch (42), then open the cover (17) and check that the oat inside the grid (30) has gone down to the water level. Then close the cover (17) and turn on the vacuum system by pressing the switch (42). When the recovery tank (16) is full, empty it according to the following procedure. Recovery tank emptying

1. Turn the brush/pad-holder switch and the vacuum system switch (41 and 42) to “0”.

2. Lift the squeegee with the lever (7).

3. Drive the machine to the appointed disposal area.

4. Grasp the handlebar (2) and slightly lower it until the rear wheel (6) comes into contact with the oor.

5. Empty the recovery tank with the drain hose (11). Then, rinse the tank with clean water.

Solution tank emptying

6. Perform steps 1 to 4.

7. Empty the solution tank with the hose (12). Then, rinse the tank with clean water.

AFTER USING THE MACHINE

After working, before leaving the machine:

1. Turn the brush/pad-holder switch and the vacuum system switch (41 and 42) to “0”.

2. Remove the brush/pad-holder as shown in Maintenance chapter.

3. Empty the tanks (15 and 16) as shown in the previous paragraph.

4. Perform the daily maintenance procedures (see the Maintenance chapter).

5. Store the machine in a clean and dry place, with the brush/pad-holder and the squeegee lifted or removed.INSTRUCTION FOR USE ENGLISH 9099589000 - SC450 17 8/12

RECOVERY TANK REMOVAL

To check or charge the lead (WET) batteries, or to perform other procedures, it may be necessary to remove the recovery tank (16) as shown below.

1. Empty the recovery tank (16) as shown in the relevant paragraph.

2. Drive the machine on a level oor.

3. Make sure that the switches (41 and 42) are turned to “0”.

4. Remove the recovery water drain hose (11) from its holder.

5. Grasp the recovery tank (A, Fig. 5) in the area (B) and slightly raise it.

6. Disconnect the vacuum hose (C) from the tank.

7. Disconnect the hose (D) from the tank vacuum grid.

8. Remove the drain hose(E) through the slit, then remove the tank (A).

9. Install the tank by performing steps 4 to 8 in the reverse order of removal.

MACHINE LONG INACTIVITY

If the machine is not going to be used for more than 30 days, proceed as follows:

1. Perform the procedures shown in After Using the Machine paragraph.

2. Disconnect the battery connector (8).ENGLISH INSTRUCTION FOR USE

18 SC450 - 9099589000 8/12 MAINTENANCE The lifespan of the machine and its maximum operating safety are ensured by correct and regular maintenance. The following chart provides the scheduled maintenance. The intervals shown may vary according to particular working conditions, which are to be dened by the person in charge of the maintenance. WARNING! Maintenance procedures must be performed with the machine switched off and the batteries/battery charger cable disconnected. Moreover, carefully read the instructions in the Safety chapter. All scheduled or extraordinary maintenance procedures must be performed by qualied personnel, or by an authorised Service Center. This Manual describes only the easier and most common maintenance procedures. For other maintenance procedures shown in the Scheduled Maintenance Table, refer to the Service Manual that can be consulted at any Service Center.

SCHEDULED MAINTENANCE TABLE

Procedure Daily, after using the machine Weekly Every six months Yearly Battery Charging Squeegee Cleaning Brush/pad cleaning Tank and vacuum grid with oat cleaning, and cover gasket check Squeegee Blade Check and Replacement Solution Filter Cleaning WET battery uid level check Brush/pad-holder motor carbon brush check or replacement (1) Vacuum system motor carbon brush check or replacement (1) (1) This maintenance procedure must be performed by an authorised Nilsk Service Center.INSTRUCTION FOR USE ENGLISH 9099589000 - SC450 19 8/12 BATTERY CHARGING NOTE Charge the batteries when the yellow or red LED (45 or 46) turns on, or at the end of each working cycle. CAUTION! Keeping the batteries charged make their life last longer. CAUTION! When the batteries are discharged, charge them as soon as possible, as that condition makes their life shorter. Check for battery charge at least once a week. CAUTION! If the machine is not equipped with on-board battery charger, choose an external battery charger suitable for the type of batteries installed. WARNING! WET battery charging produces highly explosive hydrogen gas. Charge the batteries in well-ventilated areas and away from naked ames. Do not smoke while charging the batteries. Do not reinstall the recovery tank until the battery charging cycle is over. WARNING! Pay careful attention when charging WET batteries as there may be battery uid leakages. The battery uid is corrosive. If it comes in contact with skin or eyes, rinse thoroughly with water and consult a physician.

1. Drive the machine to the appointed recharging area.

2. Turn off the machine by pressing the switches (41 and 42).

3. For WET batteries only:

• Remove the recovery water tank as shown in Use chapter. Check the level of electrolyte inside the batteries; if necessary, top up through the caps.

• Leave all the battery caps open for next charging.

• If necessary, clean the upper surface of the batteries. 4. Charge the batteries according to one of the following procedures, depending on the presence of the battery charger (48). Charging the Batteries with an External Battery Charger 5. Check that the external battery charger is suitable by referring to the relevant Manual. The battery charger voltage rating must be 24 V.

6. Disconnect the battery connector (8) and connect it to the external battery charger.

7. Connect the battery charger to the electrical mains.

8. After charging, disconnect the battery charger from the electrical mains and from the battery connector (8).

9. (For WET batteries only): Check the level of electrolyte inside the batteries and close all the caps (39).

10. Connect the battery connector (8) to the machine.

11. (For WET batteries only): Reinstall the recovery tank.

Charging the Batteries with an (Optional) Battery Charger Installed on the Machine 12. Connect the battery charger cable (4) to the electrical mains (the electrical mains voltage and frequency must be compatible with the battery charger values shown on the machine serial number plate (29)). When the battery charger is connected to the electrical mains, all machine functions are automatically cut off. If the red warning light (52) on the battery charger control panel stays on, the battery charger is charging the batteries.

13. When the green warning light (50) turns on, the battery charging is completed.

14. When the battery charging is completed, disconnect the battery charger cable (4) from the electrical mains and wind it round its housing (5).

15. (For WET batteries only): Reinstall the recovery tank.

NOTE For further information about the battery charger (48) operation, see the relevant Manual.ENGLISH INSTRUCTION FOR USE 20 SC450 - 9099589000 8/12 SQUEEGEE CLEANING NOTE The squeegee must be clean and its blades must be in good conditions in order to get a good drying. CAUTION! It is advisable to wear protective gloves when cleaning the squeegee because there may be sharp debris.

1. Drive the machine on a level oor.

2. Make sure that the switches (41 and 42) are turned to “0”.

3. Lower the squeegee (21) with the lever (7).

4. Loosen the handwheels (22) and remove the squeegee (21).

5. Disconnect the vacuum hose (10) from the squeegee.

6. Wash and clean the squeegee (Fig. 6). In particular, clean the compartments (A) and the vacuum hole (B) from dirt and debris. Check the front blade (C) and the rear blade (D) for integrity, cuts and tears; if necessary replace them (see the procedure in the following paragraph).

7. Install the squeegee in the reverse order of removal.

SQUEEGEE BLADE CHECK AND REPLACEMENT

1. Clean the squeegee (Fig. 6) as shown in the previous paragraph.

2. Check that the edge (E) of the front blade (C) and the edge (F) of the rear blade (D) lay down on the same level, along their length; otherwise adjust their height according to the following procedure:

• Remove the tie rod (G), disengage the retainers (M) and adjust the rear blade (D); then engage the retainers and install the tie rod.

• Loosen the handwheels (I) and adjust the front blade (C); then tighten the handwheels. 3. Check the front blade (C) and rear blade (D) for integrity, cuts and tears; if necessary replace them as shown below. Check that the front corner (J) of the rear blade is not worn; otherwise, overturn the blade to replace the worn corner with an integral one. If the other corners are worn too, replace the blade according to the following procedure:

• Remove the tie rod (G), disengage the fasteners (M) and remove the retaining strip (K), then replace/overturn the rear blade (D).

• Install the blade in the reverse order of removal.

• Unscrew the handwheels (I) and remove the retaining strip (L), then replace the front blade (C).

• Install the blade in the reverse order of removal. After the blade replacement (or overturning), adjust the height as shown in the previous step.

4. Connect the vacuum hose (10) to the squeegee.

5. Install the squeegee (21) and screw down the handwheels (22).

9099589000 - SC450 21 8/12 BRUSH CLEANING CAUTION! It is advisable to wear protective gloves when cleaning the brush/pad because there may be sharp debris.

1. Drive the machine on a level oor.

2. Make sure that the switches (41 and 42) are turned to “0”.

3. Remove the brush/pad-holder as follows:

• When the deck (13) is lifted, grab the brush/pad- holder (A, Fig, 7) with the hands and turn it rst in one direction (B) and then in the other direction (C) to release it.

4. Clean and wash the brush/pad with water and detergent.

5. Check the brush bristles for integrity and wear; if

1. Drive the machine to the appointed disposal area.

2. Check that the switches (41 and 42) are turned to “0” and disconnect the battery connector (8).

3. Drain the water from the tanks (15 and 16) through the drain hose (11) and hose (12).

4. Open the cover (17), then clean and wash the cover, the tanks and the vacuum grid (30) with clean water.

5. If necessary, remove the grid (A, Fig. 8) clean it carefully and reinstall it.

6. Check the recovery tank cover gasket (B) for integrity.

NOTE The gasket (B) creates vacuum in the tank that is necessary for vacuuming the recovery water. If necessary replace the gasket (B) by removing it from its housing. When assembling the new gasket, install the joint (C) in the side area, as shown in the gure.

7. Check that the seating surface (D) of the gasket (B) is integral and adequate for the gasket itself.

8. Close the recovery tank cover (17).

SOLUTION FILTER CLEANING

1. Empty the solution tank (15) as shown in the relevant paragraph.

2. Drive the machine on a level oor.

3. Check that the switches (41 and 42) are turned to “0” and disconnect the battery connector (8).

4. Unscrew the transparent cover (A, Fig. 9), remove the gasket (B), then remove the lter strainer (C). Clean and install them on the support (D). NOTE Install the gasket (B) and the lter strainer (C) properly on the cover (A) and on the support (D).

FUSE CHECK/REPLACEMENT

1. Disconnect the battery connector (8).

2. Move aside the recovery water drain hose (11).

3. Remove the battery charger cable, if equipped, from the cable holder (5).

4. Remove the screws (A, Fig. 10) and carefully move aside the panel (B) by disengaging the grommet (C) from its housing on the panel (B).

5. Check/replace the following fuses:

• (D) Brush deck motor fuse F1 (40 A)

• (E) Vacuum system fuse F2 (30 A)

• (F) Electronic board fuse F3 (5 A)

6. Perform steps 1 to 4 in the reverse order.