SC400 - Floor cleaner NILFISK - Free user manual and instructions

USER MANUAL SC400 NILFISK

CONSERVATION DU MANUEL

55. Plateau support disque

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 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, 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 (1). 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, to be considered as integral part of this Manual – Spare Parts List (supplied with the machine) – Service Manual (that can be consulted at Nilsk Service Centers)

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.

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.USER MANUAL ENGLISH 9099612000 - SC400 3 07/2012 OPERATION CAPABILITIES These scrubber-dryers are 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-dryers 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 Spare Parts List – No. 1 40 A lamellar fuse 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 USER MANUAL 4 SC400 - 9099612000 07/2012

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 User 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 program selection knob 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. – Always protect the machine against the sun, rain and bad weather, both under operation and inactivity condition. 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 User 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.USER MANUAL ENGLISH 9099612000 - SC400 5 07/2012 WARNING! – 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 slopes. – Do not tilt the machine more than the angle indicated on the machine itself, in order to prevent instability. – 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 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. 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 USER MANUAL 6 SC400 - 9099612000 07/2012

2. Handlebar with control panel

4. Solution ow opening/closing valve

5. Solution solenoid valve

6. Recovery tank cover

7. Rear wheel to support the lifted squeegee

8. Central wheels on xed axle

12. Squeegee mounting handwheels

16. Recovery water drain hose

17. Recovery water drain hose bracket

18. Solution drain hose with level check marks

22. Squeegee vacuum hose

23a. Engaged parking wheel 23b. Disengaged parking wheel

29. Battery connector (red). This connector also works as

EMERGENCY push-button, to stop immediately all functions.

P100621 MACHINE STRUCTURE (Continues)

41. Recovery tank cover (open)

42. Recovery tank cover gasket

43. Front brush/pad-holder support

44. Recovery tank compartment

45. Solution tank ller neck

46. Vacuum grid with automatic shut-off oat

47. Detergent removable ller hose

48. Vacuum system motor

51. Battery connection diagram

52. Machine straight forward movement adjusting handwheel

53. Machine forward speed adjusting handwheel

58. Lifted squeegeeENGLISH USER MANUAL

63. Program: brush - vacuum system - solution ow activation

64. Program: brush - solution ow activation

65. Program: vacuum system activation

66. Machine switching off “0”

67. Solution ow push-button Press to reach the desired

quantity, as shown by LEDs (68).

68. LED indicators with double function:

• Solution ow indicators 1 LED on: Minimum “ECO” solution ow. 2 LEDs on: Medium solution ow. 3 LEDs on: Maximum solution ow. LEDs off: Closed solution ow.

• Battery charge indicators Green LED: Charged batteries. Yellow LED: Nearly discharged batteries. Red LED: The batteries are discharged.

NOTE If the batteries are charged, the LEDs indicate the battery charge level only in the rst 5 seconds after machine start-up. When the batteries are nearly or fully discharged, the battery charge level is constantly shown. In this case, to see the solution ow, the push-button (67) must be pressed.

9099612000 - SC400 9 07/2012 ACCESSORIES/OPTIONS In addition to the standard components, the machine can be equipped with the following accessories/options, according to the machine specic use: – Batteries – Battery charger – Brushes/pads of different materials For further information concerning the optional accessories, contact an authorised Retailer. TECHNICAL DATA Model SC400 43 B SC400

Machine length 1,230 mm Machine width with squeegee 720 mm Machine width without squeegee 570 mm Min/max machine height with adjustable handlebar 725 - 1,115 mm Weight without batteries and with empty tanks 58 kg 59 kg Gross vehicle weight (GVW) 136 kg Shipping weight 80 kg 136 kg Minimum turning radius 750 mm Cleaning width 430 mm Battery compartment size 350 x 350 x 260 mm Central wheel diameter 250 mm Brush/pad diameter 430 - 432 mm Rear wheel pressure on the oor 2 N/mm

Brush/pad pressure with full tank and lowered squeegee 35 kg Vacuuming 1,200 mmH

10 SC400 - 9099612000 07/2012 P100653 WIRING DIAGRAM Key BAT 24 V battery C1 Battery connector CH Battery charger EB1 Function electronic board EBLED LED electronic board EV1 Detergent solenoid valve F0 Battery fuse (125 A) F1 Brush motor fuse (40 A) F2 Vacuum system motor fuse (30 A) F3 Signal circuit fuse (5 A) F4 Brush disengagement fuse (20 A) K1 Brush electromagnetic switch K2 Vacuum system relay LDA Green LED LDB Green/yellow LED LDC Green/red LED M1 Brush motor M2 Vacuum system motor SW1 Control selector SW2 Brush enabling switch SW3 Detergent rate switch Colour codes BK Black BU Blue BN Brown GN Green GY Grey OG Orange PK Pink RD Red VT Violet WH White YE YellowUSER MANUAL ENGLISH 9099612000 - SC400 11 07/2012 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 function electronic board and the battery charger according to the type of batteries used (WET or GEL). 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 (51). The machine can be supplied in one of the following modes: GEL/AGM battery already installed on the machine

1. Ensure that the battery connector (29) is connected.

2. Start the machine (see Machine Start and Stop paragraph). If the green LED (68) turns on, the batteries are ready to be used.

3. If the yellow or red LED (68) 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 (51)]. 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 USER MANUAL 12 SC400 - 9099612000 07/2012 BATTERY TYPE SETTING (WET OR GEL/AGM) Set the electronic board of the machine and the battery charger according to the type of batteries installed (WET or GEL/AGM) as shown below: Machine Setting

1. Disconnect the battery connector (29).

2. The machine factory setting is for GEL/AGM batteries. If

this setting corresponds to the type of batteries installed, go to step 6. Otherwise, perform steps 3, 4 and 5 too.

4. On the electronic board, turn the microswitch (C) to WET

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

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

the screws (A). Battery charger setting

6. To set the battery charger, refer to the relevant Manual

supplied with the machine.

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

8. Disconnect the recovery water drain hose (16) from the

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

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

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

12. Install the batteries on the machine according to the

13. Install the tank (A) by performing steps 7 to 11 in the

reverse order. Battery Charging

14. Charge the batteries (see the procedure in Maintenance

Brush or pad-holder installation NOTE Use either the brush (54) or the pad-holder (55 and 56) according to the type of oor to be cleaned.

1. Insert the positioning pin (24) and disengage the machine parking device (23b).

2. Lift the brush/pad-holder deck (10) by prying the handlebar (2).

3. Place the brush (54) or the pad-holder (55 and 56) under the deck.

4. Lower the deck (10) by using the handlebar (2).

5. Turn the knob (62) to program (63).

6. Press the enabling push-button (69) together with the brush levers (70) to engage the brush/pad-holder to the deck drive hub (10). If necessary, repeat the procedure until the brush/pad-holder is engaged. Available brushes and their relevant application guides (suggestions only) Models MIDLITE GRIT 180 MIDGRIT 240 PROLITE UNION MIX General cleaning Concrete Terrazzo oor Ceramic tiles/quarrystones Marble Vinyl tiles Rubber tiles Polishing Rubber tiles Marble Vinyl tiles Squeegee installation

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

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. 8. Use the ller neck (45) or the removable ller hose (47) to ll the tank (31) with a solution suitable for the work to be performed. Do not ll the solution tank completely, leave few inches 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. Adjustments

9. Adjust the handlebar (2) with the lever (71) to reach a comfortable position.ENGLISH USER MANUAL

14 SC400 - 9099612000 07/2012

MACHINE START AND STOP

Starting the machine

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

2. Lower the squeegee (11) with the pedal (19).

3. Turn the knob (62) to turn on the machine and select one of the programs according to the following table:

Selection Symbol Program (63) Scrubbing and drying. Brush - vacuum system - solution ow activation (64) Scrubbing. Brush - solution ow activation (65) Drying. Vacuum system activation

4. At machine start-up, the LEDs (68) indicate the type of battery set (see paragraph “Battery type setting”):

• 2 ashes of the red LED - WET battery setting

• 2 ashes of the green LED - GEL/AGM battery setting In the rst 5 seconds, the LEDs (68) indicate the battery charge status. If the green LED turns on, the machine is ready to be used. If the yellow or red LED turns on, the batteries must be charged (see the procedure in Maintenance chapter). NOTE If the batteries are charged, the LEDs indicate the battery charge level only in the rst 5 seconds after machine start-up. When the batteries are nearly or fully discharged, the battery charge level is constantly shown. In this case, to see the solution ow, the solution ow push-button (67) must be pressed. 5. Press the solution ow push-button (67) to change the solution quantity. Green LEDs (68) indicate the ow quantity according to the following table: LEDs on (68) Symbol Setting Minimum “ECO” solution ow. Medium solution ow. Maximum solution ow. Closed solution ow. 6. To start scrubbing/drying, keep the hands on the handlebar (2) and press both the enabling push-button (69) and the brush activation levers (70). Stopping the machine

7. Release the brush levers (70) and the enabling push-button (69).

8. Turn the knob (62) to “0” position to switch off the machine.

9. Engage the positioning pin (24) and activate the machine parking device (23a) to keep the brush/pad-holder lifted (see Fig. 5).

10. Make sure that the machine cannot move independently.

NOTE Each time that the machine is turned off, the solution ow program turns automatically to “ECO” level, to reduce water consumption. CAUTION! In case of immediate necessity and to stop all machine functions, disconnect the battery connector (29). Reset the machine functions by connecting again the connector.

01/2016USER MANUAL ENGLISH

9099612000 - SC400 15 07/2012 Squeegee lifting Lift the squeegee as indicated below:

1. Grasp the handlebar (2), lower it until the rear wheel (7)

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

2. While keeping both hands on the handlebar (2), move the machine and start scrubbing/drying the oor.

3. If necessary, adjust the solution quantity by using the push-button (67).

CAUTION! To avoid damaging the oor surface, do not use the brush without the solution and, when the machine is not operating, stop the brush/pad-holder by releasing the levers (70). CAUTION! Before lifting the brush/pad, turn it off by releasing the levers (70). 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 P100627 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 battery LEDs (68) ashing simultaneously. To start scrubbing again after a brush/pad-holder stop due to overload, stop the machine by turning the knob (62) to “0”. Restart the machine by turning the knob to one of the working programs.ENGLISH USER MANUAL 16 SC400 - 9099612000 07/2012 Machine speed adjustment

4. 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, it is possible to adjust the machine speed, according to the procedure shown in Maintenance chapter. Battery discharge during operation 5. Until the green LED (68) turns on in the rst 5 seconds, the batteries allow to work normally. When the yellow and red LED 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 TRANSPORT/PARKING

To transport/park the machine, proceed as follows.

1. Switch off the machine by turning the knob (62) to “0”.

2. Lift the squeegee (58).

3. Keep the brush/pad-holder lifted with the handlebar and push the machine where necessary.

4. Engage the positioning pin (24) and activate the machine parking device (23a) to keep the brush/pad-holder lifted (Fig. 5). 5. When all the work is done, it is advisable to remove the brush/pad-holder from the deck (see the procedure in the next paragraph), and engage it to the front holder (43). Figure 5 P100628 Brush/pad-holder removal Remove the brush/pad-holder deck by performing the following procedure:

1. Turn the knob (62) to program (64).

2. Lift the brush/pad-holder deck (10) by prying the handlebar (2).

3. Press both the enabling push-button (69) and 3 times consequently the brush levers (70) and then wait that the brush

disengages from the drive hub.

4. Turn the knob (62) to “0” position to switch off the machine.

TANK EMPTYING An automatic oat shut-off system (46) turns off the vacuum system when the recovery tank (30) is full. The vacuum system shutdown, due to the recovery tank lling, is signalled by an increase in the vacuum system motor noise, moreover 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 turning the knob (62) to “0”, then open the recovery tank cover (41) and check that the oat inside the grid (46) has gone down to the water level. Then close the recovery tank cover (6) and turn on the vacuum system by turning the knob (62) on the working program. When the recovery tank (30) is full, empty it according to the following procedure.USER MANUAL ENGLISH 9099612000 - SC400 17 07/2012 Recovery tank emptying

1. Turn the knob (62) to “0” position to switch off the machine.

2. Lift the squeegee (58).

3. Drive the machine to the appointed disposal area.

4. Insert the positioning pin (24) and lift the brush/pad-holder by engaging the parking device (23a).

5. Empty the recovery tank (30) with the drain hose (16). Then, rinse the tank with clean water.

Solution tank emptying Perform steps 1 to 4.

6. Empty the solution tank (31) with the hose (18).

7. Then, rinse the tank with clean water.

AFTER USING THE MACHINE

After working, before leaving the machine:

1. Remove the brush/pad-holder as shown in the Machine

Transport/Parking paragraph.

2. Empty the tanks (30 and 31) as shown in the previous

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 (30) as shown below.

1. Check that the knob (62) is turned to “0”.

2. Empty the recovery tank (30) as shown in the relevant

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

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

6. Open the cover (6).

7. Grasp the recovery tank (A, Fig. 6) in the area (B) and

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

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

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 (29).

3. Store the machine in a clean and dry place.ENGLISH USER MANUAL

18 SC400 - 9099612000 07/2012 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. 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

Procedure Daily, after using the machine Weekly Every six months Yearly Squeegee Cleaning Brush Cleaning Tank and Vacuum Grid Cleaning Battery Charging WET battery uid level check Squeegee Blade Check and Replacement Solution Filter Cleaning Brush motor carbon brush check and replacement (2) Vacuum system motor carbon brush check and replacement (2) (1) This maintenance procedure must be performed by an authorised Nilsk Service Center.USER MANUAL ENGLISH 9099612000 - SC400 19 07/2012 BATTERY CHARGING NOTE Charge the batteries when the yellow or red LED (68) turns on, or at the end of each 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! If the machine is not equipped with on-board battery charger, choose an external battery charger suitable for the type of batteries installed. WARNING! When using lead (WET) batteries, 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. Check that the knob (62) is turned to “0”.

3. 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. 4. Charge the batteries according to one of the following procedures, depending on the presence of the battery charger (26). 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 (29) 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 (29).

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

10. Connect the battery connector (29) to the machine.

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

Battery charging with battery charger installed on the machine 12. 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 machine serial number plate (1)). NOTE When the battery charger is connected to the electrical mains, all machine functions are automatically cut off. The battery charger red or yellow LED (27) turned on, indicates that the batteries are charging.

13. When the green LED (27) stays on, the battery charging cycle is over.

14. When the battery charging is completed, disconnect the battery charger cable (21) from the electrical mains and wind it round its housing.

15. (For WET batteries only): close all the battery caps and install the recovery tank as shown in Use chapter.

16. Now the machine is ready to be used.

NOTE For further information about the operation of the battery charger (26), see the relevant Manual.ENGLISH USER MANUAL 20 SC400 - 9099612000 07/2012 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.

1. Drive the machine on a level oor.

2. Check that the knob (62) is turned to “0”.

3. Lower the squeegee with the pedal (19).

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

5. Loosen the handwheels (12) and remove the squeegee (11).

6. Wash and clean the squeegee. In particular, clean the compartments (A, Fig. 7) and the vacuum hole (B) from dirt and debris. 7. 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).

8. Assemble the components in the reverse order of disassembly.

SQUEEGEE BLADE CHECK AND REPLACEMENT

1. Clean the squeegee as shown in the previous paragraph.

2. Check that the front blade edges (E, Fig. 7) 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. 3. 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 (G), 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.

4. Install the squeegee (11) and screw tighten the handwheels (12).

5. Connect the vacuum hose (22) to the squeegee (11).

9099612000 - SC400 21 07/2012 BRUSH CLEANING WARNING! It is advisable to wear protective gloves when cleaning the brush because there may be sharp debris.

1. Remove the brush as shown in the Machine Transport/Parking paragraph.

2. Insert the positioning pin (24) and disengage the machine parking device (23b).

3. Clean the brush with water and detergent.

4. Check the brush bristles for integrity and wear; if necessary, replace the brush.

TANK AND VACUUM GRID CLEANING

1. Drive the machine to the appointed disposal area.

2. Check that the knob (62) is turned to “0”.

3. Open the recovery water cover (41), then clean and wash the cover, the tanks (30 and 31) and the vacuum grid (46) with clean water. Drain the water from the tanks with the drain hose (16) and the hose (18). 4. If necessary, release the fasteners (B, Fig. 8) and open the grid (A); recover the oat (C), clean all the components and then reinstall them.

5. 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 gure.

6. Check the seating surface (D) of the gasket (G) for integrity and sealing capabilities.

7. Close the recovery tank cover (6).

SOLUTION FILTER CLEANING

1. Drive the machine on a level oor.

2. Check that the knob (62) is turned to “0”.

3. Close the solution valve (A, Fig. 9) under the machine, in front of the left rear wheel.

The valve (A) is closed when it is in the position (B) and it is open when it is in the position (C). 4. Remove the transparent cover (D) and the gasket (E), then remove the lter strainer (F). Clean and install them on the support (G). NOTE Install the gasket (E) and the lter strainer (F) properly on the cover (D) and on the support (G).

5. Open the valve (A) by turning it to position (C).

MACHINE SPEED ADJUSTMENT

NOTE 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, perform the following procedure.

1. Adjust the machine speed with the handwheel (53) according to the following procedure:

• Turn it counter-clockwise to increase the machine speed.

• Turn it clockwise to decrease the machine speed. 2. If it is difcult to keep the machine moving straight-forwardly because it deviates to the left or to the right, adjust the handwheel (52) by turning it clockwise or counter-clockwise. 3. With the machine ready to operate, perform hands-on tests of the machine and other adjustments if necessary.USER MANUAL ENGLISH 9099612000 - SC400 23 07/2012

FUSE CHECK/REPLACEMENT

1. Disconnect the battery connector (29).2. Remove the screws (A, Fig. 10), then carefully remove the electrical component box cover (B).3. Check the following fuses for integrity:• (C): F1 (40 A) circuit breaker, brush motor• (D): F2 (30 A) blade fuse, vacuum system motor.• (E): F3 (5 A) blade fuse, solenoid valve and electronic board• (F): F4 (20 A) glass fuse, brush disengagement system4. Replace the fuse, when the component that caused deactivation has fully cooled down.

Figure 10P100632 Battery fuse (F0) check/replacement

1. Disconnect the battery connector (29).2. Remove the recovery tank (30) (see the procedure in Use chapter).

3. Check or replace the battery fuse F0 (125 A) (B) on the battery connection cable (A, Fig. 11).

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