SCRUBTEC 343B - Scrubber NILFISK - Free user manual and instructions

USER MANUAL SCRUBTEC 343B NILFISK

CONSERVATION DU MANUEL

ENGLISH USER MANUAL INTRODUCTION NOTE The numbers in brackets refer to the components shown in Machine Description chapter.

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 qualified technicians must read this Manual carefully. Contact Nilfisk Alto in case of doubts concerning the interpretation of the instructions and for any further information. TARGET This Manual is intended for operators and technicians qualified to perform the machine maintenance. The operators must not perform procedures reserved for qualified technicians. Nilfisk Alto will not be answerable for damages coming from the non-observance of this prohibition.

HOW TO KEEP THIS MANUAL

The User 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, certifies 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 model and serial number are marked on the plate (1). The machine production year is written in the declaration of conformity and it is also indicated by the first two figures of the machine serial number. This information is useful when requiring machine spare parts. Use the following table to write down the machine identification data. MACHINE model ............................................................................... MACHINE serial number ...................................................................

OTHER REFERENCE MANUALS

Electronic Battery Charger Manual (if equipped), to be considered as integral part of this Manual Spare Parts List (supplied with the machine) Service Manual (that can be consulted at Nilfisk Alto Service Centers)

SPARE PARTS AND MAINTENANCE

All necessary operating, maintenance and repair procedures must be performed by qualified personnel or by Alto Service Centers. Only original spare parts and accessories must be used. Contact Nilfisk Alto for service or to order spare parts and accessories, specifying the machine model and serial number.

CHANGES AND IMPROVEMENTS

Nilfisk Alto constantly improves its products and reserves the right to make changes and improvements at its discretion without being obliged to apply such benefits to the machines that were previously sold. Any change and/or addition of accessories must be approved and performed by Nilfisk Alto. OPERATION CAPABILITIES These scrubber-dryers are used to clean (scrubbing and drying) smooth and solid floors, in civil or industrial environment, under safe operation conditions by a qualified operator. The scrubber-dryers cannot be used for fitted 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 fill in a damage claim. Please check that the following items have been supplied with the machine: Technical documents:

• Scrubber-dryer User Manual
• Electronic Battery Charger Manual (if equipped)
• Scrubber-dryer Spare Parts List No. 1 40 A lamellar fuse No. 2 battery panels (Only for machine supplied without batteries)
• No. 1 red connector with terminals 909 6313 000(4)2009-11 A SCRUBTEC 343B

ENGLISH USER MANUAL 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. SYMBOLS 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 Quick Start Guide before performing any procedure. GENERAL INSTRUCTIONS Specific warnings and cautions to inform about potential damages to people and machine are shown below. DANGER! – Before performing any maintenance, repair, cleaning or replacement procedure, turn the main switch to “0” and, if necessary, disconnect the battery. – This machine must be used by properly trained operators only. Children or disabled people cannot use this machine. – When using lead (WET) batteries, keep sparks, flames and smoking materials away from the batteries. During the normal operation explosive gases are released. – Do not wear jewels when working near electrical components. – Do not operate the machine near toxic, dangerous, flammable and/or explosive powders, liquids or vapours: This machine is not suitable for collecting dangerous powders. – 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 flames.

SCRUBTEC 343B 909 6313 000(4)2009-11 A USER MANUAL ENGLISH WARNING! – 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 fire, 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. – Do not leave the machine unattended without being sure that it cannot move independently. – 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. – Do not allow to be used as a toy. Close attention is necessary when used near children. – Use only as shown in this Manual. Use only Nilfisk Alto’s recommended accessories. – Take all necessary precautions to prevent hair, jewels and loose clothes from being caught by the machine moving parts. – Do not leave the machine unattended without being sure that it cannot move independently. – Do not use the machine in particularly dusty areas. – 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 floor cleaning detergents, follow the instructions on the labels of the detergent bottles. – To handle floor cleaning detergents, wear suitable gloves and protections. – Do not use the machine as a means of transport. – Do not use the machine on incline. – Do not allow the brushes to operate while the machine is stationary to avoid damaging the floor. – In case of fire, use a powder fire 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 flow. – Do not remove or modify the plates affixed 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 and those specified in the User Manual. Using other brushes or pads could reduce safety. – In case of machine malfunctions, ensure that these are not due to lack of maintenance. Otherwise, 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. – Carefully read all the instructions before performing any maintenance/repair procedure. – 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). 909 6313 000(4)2009-11 A SCRUBTEC 343B

Serial number plate/technical data/conformity certification Handlebar Handlebar inclination adjusting knob Solution flow control lever Minimum solution flow position Maximum solution flow position Recovery tank cover Rear support wheel for transport/parking Central wheels on fixed axle Brush/pad Brush/pad-holder deck Squeegee Squeegee mounting handwheels Front squeegee blade Rear squeegee blade Squeegee blade mounting springs Recovery water drain hose Recovery water drain hose bracket Solution drain valve

22. Squeegee vacuum hose

29. Battery connector (only for machines without on-board

Recovery tank cover (open) Recovery tank cover gasket Brush/pad support (engaged) Recovery tank compartment Solution tank filler neck Vacuum grid with automatic shut-off float Recovery water drain hole Vacuum system motor Brush/pad-holder motor Batteries Battery connection diagrams Brush/pad-holder deck Machine speed adjusting screw Brush Pad-holder Pad Screw Brush/pad-holder engagement rotation direction Cover support rod (engaged)

Control panel Charged battery warning light (green) Semi-discharged battery warning light (yellow) Discharged battery warning light (red) Brush/pad-holder switch Vacuum system switch

S311223A ACCESSORIES/OPTIONS In addition to the standard components, the machine can be equipped with the following accessories/options, according to the machine specific use: Brushes/pads of different materials Electronic battery charger For further information concerning the optional accessories, contact an authorised Retailer.

Rear wheel pressure on the floor

Front wheel pressure on the floor

Battery charger connector (optional)

Blue EB1 Electronic board (CF BA430)

Brown EB2 Electronic board led (CF BALED)

Grey ES2 Vacuum system switch

Orange EV1 Water solenoid valve

Vacuum system fuse (40 A)

Solenoid valve and electronic board fuse (5 A)

White IS1 Negative insulator

Vacuum system motor SW1 Brush/pad-holder switch SW2 Vacuum system switch

SCRUBTEC 343B 909 6313 000(4)2009-11 A USER MANUAL ENGLISH 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 qualified personnel only. Check the batteries for damage before installation. 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: GEL batteries already installed on the machine

Start the machine by pressing the brush/pad-holder and vacuum system switches (65 and 66). If the green warning light (62) turns on, the batteries are ready to be used. If the yellow or red warning light (63 or 64) turns on, the batteries must be charged (see the procedure in Maintenance chapter). Without batteries

Buy appropriate batteries [See the Technical Data paragraph and the diagram (28)]. For battery choice and installation, apply to qualified battery Retailers. Set the machine and the battery charger (if equipped) according to the type of batteries installed (WET or GEL), according to the procedure shown in the following paragraph. 909 6313 000(4)2009-11 A SCRUBTEC 343B

ENGLISH USER MANUAL BATTERY TYPE SETTING (WET OR GEL) Set the electronic board of the machine according to the type of batteries installed (WET or GEL) as shown below:

Check that the battery connector (29) is disconnected. The machine factory setting is for GEL batteries. If this setting corresponds to the type of batteries installed, go to step 6. Otherwise, perform steps 3, 4 and 5 too. Remove the screws (A, Fig. 1), then remove the electrical component box cover (B). Turn the microswitch (C) to WET position. WARNING! Do not move/set the adjacent switch (D).

Reinstall the electric component box cover (B) and tighten the screws (A).

Figure 1 S311230A Battery installation

Disconnect the vacuum hose (22) from the squeegee (11). Disconnect the recovery water drain hose (16) from the bracket (17).

8. Open the cover (6).

9. Grasp the recovery tank (A, Fig. 2) in the area (B) and

10. Disconnect the vacuum hose (C) from the tank, then

remove the tank (A) with the hoses (D) and (E).

11. Install the batteries on the machine according to the

12. Install the tank (A, Fig. 2) by performing steps 6 to 10 in

the reverse order. Battery charging

13. Charge the batteries (see the procedure in Maintenance

Brush or pad-holder installation NOTE Use either the brush (54) or the pad-holder (55) according to the type of floor to be cleaned.

Insert the positioning pin (24) and disengage the machine transport/parking device (23b). Lift the brush/pad-holder deck (10) by prying the handlebar (2). Place the brush (54) or the pad-holder (55) under the deck. Lower the deck (10) by using the handlebar (2). Engage the brush/pad-holder by pressing the brush/pad switch (65) for a few seconds. If the procedure is difficult, manually turn the brush/pad-holder counter-clockwise (58). Brush/pad application guide (suggestions only) Types of brushes available Midlite Grit 180 Midgrit 240 Prolite Union Mix Concrete Terrazzo floor General cleaning Ceramic tiles/quarrystones Marble Vinyl tiles Rubber tiles Rubber tiles Polishing Marble Vinyl tiles Squeegee installation

Install the squeegee (11) and fasten it with the handwheels (12), then connect the vacuum hose (22) to the squeegee. Solution tank filling

Open the recovery water tank cover (41) and engage the support rod (59). Use the filler neck (45) to fill the tank (32) with a solution suitable for the work to be performed. Do not fill the solution tank completely, leave a 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. CAUTION! Use only low-foam and non-flammable detergents, intended for automatic scrubber applications. Adjustments

Adjust the handlebar (2) with the knobs (3) to reach a comfortable position. 909 6313 000(4)2009-11 A SCRUBTEC 343B

MACHINE START AND STOP

Starting the machine

Prepare the machine as shown in the previous paragraph. Lower the squeegee (11) with the lever (19). Turn the solution flow control lever (4) to a position between the minimum limit (5a) and maximum limit (5b). In no case it is possible to close completely the water flow to the brushes during operation. While keeping the hand on the handlebar (2), start the machine by turning the brush/pad-holder switch and the vacuum system switch (65 and 66) to “I”. NOTE If the green warning light (62) turns on, the batteries are ready to be used. If the yellow or red warning light (63 or 64) turns on, the batteries must be charged (see the procedure in Maintenance chapter). Stopping the machine

Turn the brush/pad-holder switch and the vacuum system switch (65 and 66) to “0”. Lift the squeegee with the lever (19). Insert the positioning pin (24) and lift the brush/pad-holder by engaging the transport/parking device (23a). MACHINE OPERATION (SCRUBBING/DRYING)

Start the machine as shown in the previous paragraph. While keeping both hands on the handlebar (2), move the machine and start scrubbing/drying the floor. If necessary, adjust the solution quantity by using the lever (4). CAUTION! To avoid damaging the floor surface, do not use the brushes without the solution and, when the machine is not operating, stop the brush/pad-holder by pressing the switch (65). CAUTION! Before lifting the brush/pad, turn it off by pressing the switch (65). NOTE For correct scrubbing/drying of floors at the sides of the walls, Nilfisk Alto suggests to go near the walls with the right side of the machine as shown in figure 3.

Figure 3 P100160A CAUTION! In case of brush/pad-holder motor overload, due to foreign bodies which prevent them from turning, or to excessively aggressive floors/brushes, the safety system stops the brush/pad-holder after about one minute of continuous overload. The overload is shown by the three warning lights (62, 63, 64) flashing simultaneously. If the overload persists, the brush/pad-holder stops. 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 (65 and 66) to “0”. Turn on the machine by turning the brush/ pad-holder switch and the vacuum system switch (65 and 66) to “I”.

SCRUBTEC 343B 909 6313 000(4)2009-11 A USER MANUAL ENGLISH Battery discharge during operation

Until the green warning light (62) stays on, the batteries allow the machine to work normally. When the green warning light (62) turns off and the yellow (63) and red (64) warning lights turn on in sequence, it is necessary to charge the battery as the machine residual autonomy is at the minimum level. WARNING! Do not use the machine with discharged batteries, to avoid damaging the batteries and reducing the battery life. Machine speed adjustment

The machine speed varies according to the type of floor to be cleaned and the choice of using the brush or the pad. If necessary, it is possible to adjust the machine speed, according to the procedure shown in Maintenance chapter.

MACHINE TRANSPORT/PARKING

To transport/park the machine, proceed as follows.

1. Turn the brush/pad-holder switch and the vacuum system switch (65 and 66) to “0”.

2. Lift the squeegee with the lever (19).

3. Grasp the handlebar (2) and slightly lower it until the rear wheel (7) comes into contact with the floor (Fig. 4). While holding the machine in this position, drive it to the transport/parking area. 4. In order not to drag the brush/pad on the floor and leave wet marks, when finishing working, remove the brush/pad-holder from the deck by using the release device (see the procedure in After Using The Machine paragraph), then place it on the support (30). Figure 4 S311225A 909 6313 000(4)2009-11 A SCRUBTEC 343B

ENGLISH USER MANUAL TANK EMPTYING An automatic float shut-off system (44) turns off the vacuum system when the recovery tank (31) is full. The vacuum system shutdown, due to the recovery tank filling, is signalled by an increase in the vacuum system motor noise, moreover the floor is not dried. CAUTION! If the vacuum system turns off accidentally (for example, when the float is activated because of a sudden machine movement), to resume the operation: turn off the vacuum system by pressing the switch (66), then open the cover (6) and check that the float inside the grid (46) has gone down to the water level. Then close the cover (6) and turn on the vacuum system by pressing the switch (66). When the recovery tank (31) is full, empty it according to the following procedure. Recovery tank emptying

Start the machine by pressing the brush/pad-holder and vacuum system switches (65 and 66). Lift the squeegee with the lever (19). Drive the machine to the appointed disposal area. Insert the positioning pin (24) and lift the brush/pad-holder by engaging the transport/parking device (23a). Empty the recovery tank with the drain hose (16). Then, rinse the tank with clean water. Solution tank emptying

Perform steps 1 to 4. Empty the solution tank by using the drain valve (18). Then, rinse the tank with clean water.

AFTER USING THE MACHINE

After working, before leaving the machine:

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

• With the brush/pad-holder lifted, turn the brush/pad-holder switch (65) to “I” and, after a few seconds, back to “0”, thus releasing the brush/pad-holder.

2. Empty the tanks (31 and 32) as shown in the previous paragraph.

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

4. Store the machine in a clean and dry place, with the brush/pad-holder and the squeegee lifted or removed.

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 (31) as shown below.

1. Empty the recovery tank (31) as shown in the relevant paragraph.

2. Drive the machine on a level floor.

3. Make sure that the switches (65 and 66) are turned to “0”.

4. Disconnect the vacuum hose (22) from the squeegee (11).

5. Disconnect the recovery water drain hose (16) from the bracket (17).

6. Open the cover (6).

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

8. Disconnect the vacuum hose (C) from the tank, then remove the tank (A) with the hoses (D) and (E).

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. Remove the recovery tank (31) as shown in the previous paragraph, and then disconnect the battery negative terminals (10).

3. Install the recovery water tank (A).

4. Store the machine in a clean and dry place.

After the first 8 hours, check the machine fastening and connecting parts for proper tightening. Check the visible parts for integrity and leakage. 909 6313 000(4)2009-11 A SCRUBTEC 343B

ENGLISH USER MANUAL 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 defined 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 qualified personnel, or by an authorised Service Center. This Manual describes only the easier and most common maintenance procedures. NOTE 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

Daily, after using the machine Procedure Weekly Every six months Yearly Squeegee cleaning Brush cleaning Tank and vacuum grid cleaning Squeegee blade check and replacement Solution filter cleaning Battery charging WET battery fluid level check Screw and nut tightening check (1) Brush motor carbon brush check and replacement (2) Vacuum system motor carbon brush check and replacement (2) (1) And after the first 8 working hours. (2) This maintenance procedure must be performed by Nilfisk Alto authorised Service Center.

SCRUBTEC 343B 909 6313 000(4)2009-11 A USER MANUAL ENGLISH SQUEEGEE CLEANING NOTE The squeegee must be clean and its blades must be in good conditions in order to get a good drying. WARNING! It is advisable to wear protective gloves when cleaning the squeegee because there may be sharp debris.

Drive the machine on a level floor. Make sure that the switches (65 and 66) are turned to “0”. Lower the squeegee with the lever (19). Disconnect the vacuum hose (22) from the squeegee. Loosen the handwheels (12) and remove the squeegee (11). Wash and clean the squeegee. In particular, clean the compartments (A, Fig. 6) 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). Assemble the components in the reverse order of disassembly.

Clean the squeegee as shown in the previous paragraph. Check that the front blade edges (E, Fig. 6) and the rear blade edges (I) lay down on the same level, along their length; if necessary adjust the height according to the following procedure:

• Remove the mounting springs (F), then adjust the front blade (C) and the rear blade (D).
• Install the mounting springs on the front and rear blades. Check the front blade (C) and rear blade (D) for integrity, cuts and tears; if necessary replace them as shown below. Also check the front corner (H) of the rear blade for wear; if it is worn, overturn the blade to replace the worn corner with the other one (I), if it is integral. If the other corner is worn too, replace the blade according to the following procedure:
• Remove the mounting springs (F) and then replace (or overturn) the rear blade (D).
• Install the mounting springs on the front and rear blades. Install the squeegee (11) and screw tighten the handwheels (12). Connect the vacuum hose (22) to the squeegee (11).

ENGLISH USER MANUAL BRUSH CLEANING NOTE It is advisable to wear protective gloves when cleaning the brushes because there may be sharp debris.

Remove the brush, as shown in Use chapter. Clean the brush with water and detergent. Check the brush bristles for integrity and wear; if necessary, replace the brush.

Drive the machine to the appointed disposal area. Make sure that the switches (65 and 66) are turned to “0”. Open the cover (6), then clean and wash the cover, the tanks (31 and 32) and the vacuum grid (46) with clean water. Drain the water from the tanks with the drain hose (16) and the valve (18). If necessary, release the fasteners (B, Fig. 7) and open the grid (A); recover the float (C), clean all the components and then reinstall them. Check the recovery tank cover gasket (D) for integrity. NOTE The gasket (D) creates vacuum in the tank that is necessary for vacuuming the recovery water.

If necessary replace the gasket (D) by removing it from its housing (E). When assembling the new gasket, install the joint (F) in the rear central area, as shown in the figure. Check the seating surface (D) of the gasket (G) for integrity and sealing capabilities. Check the compensation hole (33) for clogging. NOTE The hole (33), allowing to compensate the air in the cover air gap, contributes to create vacuum in the tank.

Close the recovery tank cover (6).

SOLUTION FILTER CLEANING

Empty the solution tank (32) as shown in the relevant paragraph. Drive the machine on a level floor. Make sure that the switches (65 and 66) are turned to “0”. Remove the transparent cover (A, Fig. 8), then remove the filter strainer (B). Clean and install them on the support (C). NOTE The filter strainer (B) must be correctly positioned on the housing (D) of the support (C).

MACHINE SPEED ADJUSTMENT

NOTE The machine speed varies according to the type of floor to be cleaned and the choice of using the brush or the pad. If necessary, perform the following procedure.

Remove the recovery tank as shown in Use chapter. Adjust the machine speed with the screw (53) as shown below:

• Loosen the screw (57), on the right side of the machine, by turning it counter-clockwise.
• Turn the adjusting screw (53) counter-clockwise to increase the machine speed.
• Turn the adjusting screw (53) clockwise to decrease the machine speed.
• After adjusting, tighten the screw (57). Install the recovery tank as shown in Use chapter. With the machine ready to operate, perform hands-on tests of the machine and, if other adjustments are necessary, repeat steps 1 to 4. 909 6313 000(4)2009-11 A SCRUBTEC 343B

ENGLISH USER MANUAL BATTERY CHARGING NOTE Charge the batteries when the yellow or red warning light (63 or 64) turns on, or at the end of every working cycle. 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! When using lead (WET) batteries, battery charging produces highly explosive hydrogen gas. Charge the batteries in well-ventilated areas and away from naked flames. 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 fluid leakages. The battery fluid is corrosive. If it comes in contact with skin or eyes, rinse thoroughly with water and consult a physician.

Drive the machine on a level floor. For WET batteries only:

• Remove the recovery 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. Charge the batteries as shown below. Connect the battery charger cable (21) to the electrical mains (the electrical mains voltage and frequency must be compatible with the battery charger values shown on the relevant Manual). NOTE When the battery charger is connected to the electrical mains, all machine functions are automatically cut off. The green warning light (27) flashes when the battery charger is charging the batteries.

When the green warning light (27) stays on, the battery charging cycle is over. When the battery charging is completed, disconnect the battery charger cable (21) from the electrical mains and wind it round its housing. For WET batteries only:

• Install the recovery tank as shown in Use chapter.
• Check the level of electrolyte inside the batteries; if necessary, top up through the caps.
• Close all the battery caps.
• If necessary, clean the upper surface of the batteries. Now the machine is ready to be used. NOTE For further information about the operation of the battery charger (26), see the relevant Manual.

FUSE CHECK/REPLACEMENT

For machine without battery charger only

Disconnect the battery connector (29). For machine with battery charger only

Remove the recovery tank as shown in Use chapter. For machine with battery charger only

Disconnect the battery negative terminals (50). Remove the screws (A, Fig. 10), then carefully remove the electrical component box cover (B). Check/replace the following fuses:

• Vacuum system (40 A) (D)
• Solenoid valve and electronic board (5 A) (E) Install the components in the reverse order of removal.

ENGLISH USER MANUAL TROUBLESHOOTING Trouble Possible Cause The motors do not turn on; no warning light turns The warning lights (62, 63, 64) flash simultaneously The vacuum system motor does not turn on The dirty water vacuuming is insufficient The solution flow is insufficient The squeegee leaves marks on the floor Remedy The battery terminals (50) are disconnected Connect The batteries (50) are discharged Charge The brush motor is overloaded Use a different kind of brush There are foreign materials (tangled threads, etc.) preventing the brush from rotating Clean the brush hub The fuse is blown Replace The recovery water tank (31) is full Empty The vacuum grid (46) is clogged or the float is closing Clean the grid and check the float The vacuum hose (22) is disconnected from the squeegee (11) or it is damaged Connect The squeegee (11) is dirty, or the squeegee blades (13, 14) are worn or damaged Clean the squeegee or replace the blades The recovery water tank cover (6) is not properly closed, or the gasket (42) is damaged Check and/or clean the seating surface or replace the gasket The recovery water tank (31) is dirty (clogged drain hole) Clean The solution filter (20) is dirty Clean There is debris under the squeegee blades (13, 14) Remove the debris The squeegee blades (13, 14) are worn, chipped or torn Replace the blades For further information refer to the Service Manual, available at any Nilfisk Alto Service Center. SCRAPPING Have the machine scrapped by a qualified scrapper. Before scrapping the machine, remove and separate the following materials, which must be disposed of properly according to the Law in force: Battery Brushes Plastic hoses and components Electrical and electronic components (*)

Refer to the nearest Nilfisk Alto Center especially when scrapping electrical and electronic components.

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