CA 451 - Industrial vacuum cleaner NILFISK - Free user manual and instructions

USER MANUAL CA 451 NILFISK

The undersigned certify that the above mentioned model is produced in accordance with the following directives and standards.

O KATWU UTOYEVPAUMEVOIIOITOMOEI OTI N TAPAYWY TOU TPOAVAPEPHEVTOG MOVTELAUYIVETAI OUIPOWVAUEVIACKOLAUEGOONYIECKAI TPOTUTTA.

Manufacturer: Nilfisk-Advance S.p.A.

Authorized signatory: Franco Mazzini, General Mgr

Date:

Signature:

INHALTSVERZEICHNIS

EINLEITUNG 2

GERÄT IN BETRIEB (WASCHEN/TROCKNEN) 12

TANKS ENTLEEREN. 12

GERÄT IN BETRIEB (WASCHEN/TROCKNEN)

CONSERVATION DU MANUEL 2

DECLARATION DE CONFORMITE 2

DONNEES D'IDENTIFICATION 2

STRUCTURE DE LA MACHINE 6

TABLEAU DE BORD 7

ACCESSIONS / OPTIONS 7

CHARACTERISTIQUES TECHNIQUES 8

SCHEMA ELECTRIQUE 9

UTILISATION 10

AVANT LA MISE EN MARCHE DE LA MACHINE 10

MISE EN MARCHE ET ARRET DE LA MACHINE 11

MACHINE AU TRAVAIL (LAVAGE / SECHAGE) 12

VIDANGE DES RESERVOIRS 12

APRES L'UTILISATION DE LA MACHINE 13

INACTIVITE PROLONGEE DE LA MACHINE 13

PREMIERE PERIODE D'UTILISATION 13

ENTRETIEN 13

PLAN D'ENTRETIEN PROGRAMME 13

CONTROLE DES HEURES DE TRAVAIL DE LA MACHINE 14

CONTROLE DU CABLE D'ALIMENTATION 14

NETTOYAGE DE L'EMBOUCHURE 14

CONTROLE ET REMPLACEMENT DES LAMELLES EN CAOUTCHOUC DE L'EMBOUCHURE 15

NETTOYAGE DE LA BROSSE / DISQUE 15

NETTOYAGE DES RESERVOIRS, DE LA GRILLE D'ASPIRATION AVEC FLOTTEUR ET CONTROLE DU JOINT

D'ETANCHEITE DU COUVERCLE 16

NETTOYAGE DU FILTRE DU MOTEUR DU SYSTEME D'ASPIRATION 16

NETTOYAGE DU FILTRE DE LA SOLUTION 17

CONTROLE / REMPLACEMENT DES FUSIBLES 17

DEPISTAGE DES PANNES 18

MISE A LA FERRAILLE 18

INTRODUCTION

REMARQUE

CONSERVATION DU MANUEL

STRUCTURE DE LA MACHINE

ACCESSIONS / OPTIONS

MANUAL PURPOSE AND CONTENTS 2

TARGET 2

HOW TO KEEP THIS MANUAL 2

DECLARATION OF CONFORMITY 2

IDENTIFICATION DATA. 2

OTHER REFERENCE MANUALS 2

SPARE PARTS AND MAINTENANCE 2

CHANGES AND IMPROVEMENTS 3

ACCESSIONS/OPTIONS 7

TECHNICAL DATA. 8

WIRING DIAGRAM 9

USE 10

BEFORE MACHINE START-UP 10

MACHINE START AND STOP 11

MACHINE OPERATION (SCRUBBING/DRYING) 12

TANK EMPTYING 12

AFTER USING THE MACHINE 13

MACHINE LONG INACTIVITY 13

FIRST PERIOD OF USE 13

MAINTENANCE 13

SCHEDULED MAINTENANCE TABLE 13

MACHINE WORKING HOUR CHECK 14

POWER SUPPLY CABLE CHECK 14

SQUEEGEE CLEANING 14

SQUEEGEE BLADE CHECK AND REPLACEMENT 15

BRUSH/PAD CLEANING 15

TANK AND VACUUM GRID WITH FLOAT CLEANING, AND COVER GASKET CHECK 16

VACUUM SYSTEM MOTOR FILTER CLEANING 16

SOLUTION FILTER CLEANING 17

FUSE CHECK/REPLACEMENT 17

TROUBLESHOOTING 18

SCRAPPING 18

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 in case of doubts regarding 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 will not be answerable for damages coming from the non-observation 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 (34).

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

Service Manual (that can be consulted at Nilfisk Service Centers)

• Spare Parts List (supplied with the machine)

SPARE PARTS AND MAINTENANCE

All necessary operating, maintenance and repair procedures must be performed by qualified personnel or by Nilfisk Service Centers.

Only original spare parts and accessories must be used.

Contact Nilfisk for service or to order spare parts and accessories, specifying the machine model and serial number.

CHANGES AND IMPROVEMENTS

Nilfisk 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 accessory must be approved and performed by Nilfisk.

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. Check that the machine is equipped with the following features:

1. Technical documents:

2. Scrubber-dryer User Manual

3. Scrubber-dryer Spare Parts List

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 or damage to objects.

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

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 disconnect the plug from the electrical mains.
- This machine must be used by properly trained operators only. Children or disabled people cannot use this machine.
- 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, flammable and/or explosive powders, liquids or vapours: This machine is not suitable for collecting dangerous powders.

WARNING!

Before using the machine, close all doors and/or covers.
- The machine power supply cable is grounded and the relevant plug is grounded too. In case of machine malfunction or breakdown, grounding connection reduces the risk of electric shock.
- The power supply cable plug must be connected to an appropriate outlet, which is grounded according to law in force.
- Improper connection can cause electric shock. Consult a qualified technician to make sure that the outlet is properly grounded.
- Do not tamper with the power supply cable plug. If the power supply cable plug cannot be connected to the outlet, have new grounded outlet installed by a qualified technician, according to the law in force.
- Before connecting the power supply cable to the electrical mains, check that frequency and voltage, shown on the machine serial number plate, match the electrical mains voltage.
- Do not unplug the machine by pulling the supply cable. To unplug, grasp the plug, not the cable.
- Do not handle the plug or the machine with wet hands.
- Turn off all controls before unplugging.
- Regularly check the power supply cable for damages, cuts, cracks and wear. If necessary, replace it.
- If the power supply cable is damaged, contact the Nilfisk Service Center for replacement.
- Do not pull or carry the machine by the power supply cable and never use the power supply cable as a handle. Do not close a door on the power supply cable, or pull the power supply cable around sharp edges or corners. Do not run the machine on the power supply cable.
- The brushes must not come into contact with the power supply cable.
- Keep the power supply cable away from heated surfaces.
- To reduce the risk of fire, electric shock, or injury, do not leave the machine unattended when it is plugged in. Disconnect the machine from the electrical mains when not in use and before performing maintenance procedures.
- 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.
- 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's recommended accessories.

WARNING!

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 on incline.
- 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^ and +40^ .
- The machine storage temperature must be between 0^ and +40^ .
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 allow the brush/pad 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 the machine

does not work properly
is damaged
- has water or foam leaks
- has been left outdoors exposed to bad weather conditions
- is wet or has been dropped into water

turn it off immediately and contact the Nilfisk Service Center or a qualified technician.

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, electronic components, etc.), which are subject to standards that require disposal in special centres (see the Scrapping chapter).

MACHINE DESCRIPTION

MACHINE STRUCTURE

1. Control panel
2. Handlebar
3. Power supply cable
4. Power supply cable holder
5. Recovery water drain hose plug
6. Water removable filler hose (optional)
7. Squeegee lifting/lowering lever
8. Deck lifting/lowering pedal
   8a. Pedal position when deck is lifted
   8b. Pedal position when deck is lifted
9. Rear steering wheels
10. Front wheels on fixed axle
11. Squeegee vacuum hose
12. Recovery water drain hose
13. Solution drain and level check hose
14. Brush/pad-holder deck
15. Brush/pad-holder
16. Solution tank
17. Recovery tank
18. Recovery tank cover
19. Can holder
20. Document fastener (optional)

21. Squeegee

22. Squeegee mounting handwheels

23. Squeezee balance adjusting handwheel
24. Solution filter
25. Solution tap
    26a. Recovery tank cover (opened to be cleaned)
    26b. Recovery tank cover (completely opened)
26. Tank cover gasket
27. Cover movable retaining plate
28. Cover fixed retaining plate
29. Compensation hole
30. Serial number plate/technical data/conformity certification
31. Plug for squeegee vacuum hose cleaning
32. Vacuum grid with automatic shut-off float
33. Solution filler neck
34. Foam filter
35. Recovery tank retaining plate (do not remove!)
36. Machine straight forward movement adjusting handwheel
37. Machine forward speed adjusting handwheel
38. Solenoid valve

CONTROL PANEL

1. Brush/pad-holder switch
2. Vacuum system switch
3. Hour counter (optional)
4. Washing water flow control switches
   54a. Flow increase switch
   54b. Flow decrease switch
   54c. Solution flow indicator

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ACCESSIONS/OPTIONS

In addition to the standard components, the machine can be equipped with the following accessories/options, according to the machine specific use:

1. Brushes of different materials
2. Pads of different materials
3. Polyurethane squeegee blades
4. Front and rear wheels of different materials
5. Hour counter
6. Solution/clean water removable filler hose
7. Pocket

For further information concerning the optional accessories, contact an authorised Retailer.

TECHNICAL DATA

Model	CA 451	CA 531
Power supply	230 V, 50-60 Hz
Machine height	1,058.5 mm
Solution tank capacity	40 litres
Recovery tank capacity	40 litres
Front wheel diameter	200 mm
Front and rear wheel specific pressure on the floor	0.6 N/mm² - 3.2 N/mm²
Rear wheel diameter	100 mm
Vacuum system motor power	550 W, 50-60 Hz
Gradeability	2 %
Sound pressure level at workstation (ISO 11201, ISO 4871) (LpA)	67.3 dB(A) ± 3 dB(A)
Machine sound pressure level (ISO 3744, ISO 4871) (LwA)	84 dB(A)
Vibration level at the operator's arms (ISO 5349-1)	< 2.5 m/s²
Vacuum system circuit capacity	1,316 mm H₂O
Cleaning width	450 mm	530 mm
Squeegee width	760 mm
Machine maximum length	1,147 mm	1,185 mm
Machine width without squeegee	512 mm	541 mm
Brush diameter	450 mm	530 mm
Weight with empty tanks	131 kg
Weight with full tanks	171 kg
Brush motor power	1,100 W, 50-60 Hz
Brush speed	150 rpm
Brush pressure	28.3 kg	29.6 kg

Key

WIRING DIAGRAM

C1	Filtering condenser
EB1	Water flow check electronic board
EV1	Water solenoid valve
F1	Electronic board fuse
FL1	Filter
FR	Machine frame
HM	Hour counter (optional)
HS	Grounding screw
M1	Brush/pad-holder motor
M2	Vacuum system motor
PL1	Plug
SW1	Brush/pad-holder switch
SW2	Vacuum system switch

Colour codes

BK	Black
BU	Blue
BN	Brown
GN	Green
GY	Grey
OG	Orange
PK	Pink
RD	Red
VT	Violet
WH	White
YE	Yellow

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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.

BEFORE MACHINE START-UP

Brush/pad-holder installation/removal

1. Disconnect the power supply cable (3) from the electrical mains.
2. Place the brush (A, Fig. 1) or the pad-holder (B) under the deck (14).
3. Lower the deck on the brush/pad-holder by pressing the pedal (8).
4. Connect the power supply cable (3) to the electrical mains.
5. Engage the brush or pad-holder by pressing the switch (51) for a few seconds.

WARNING!

Do not press the switch (51) too much, otherwise the machine will start.

1. To remove the brush/pad-holder lift the deck by pressing the pedal (8), then manually remove the brush/pad-holder from the hub, by turning it in the opposite direction to the normal rotation direction.

Figure 1

S311343

Available brushes and their relevant application guides (suggestions only)

Models	MIDLITE GRIT 180	MIDGRIT 240	PROLENE	PROLITE	UNION MIX
General cleaning:
Concrete
Terrazzo floor
Ceramic tiles/quarrystones
Marble
Vinyl tiles
Rubber tiles
Polishing:
Rubber tiles
Marble
Vinyl tiles

Squeegee installation

1. Install the squeegee (21) and fasten it with the handwheels (22), then connect the vacuum hose (11) to the squeegee.
2. With the handwheel (23), adjust the squeegee so that the rear blade - in all its length - touches the floor and the front blade is slightly detached from the floor.

Solution tank filling

1. Use the filler neck (34) to fill the tank (16) with a solution suitable for the work to be performed. Do not fill the solution tank completely, leave a few centimetres from the edge. Use the removable hose (13) as reference. Always follow the dilution instructions on the label of the chemical product used to prepare the solution. The solution temperature must not exceed 40^ .

CAUTION!

Use only low-foam and non-flammable detergents, intended for automatic scrubber applications.

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. Connect the power supply cable (3) to the electrical mains.

WARNING!

Before connecting the power supply cable to the electrical mains, check that frequency and voltage, shown on the machine serial number plate, match the electrical mains voltage.

1. Lower the squeegee (21) with the lever (7).
2. Lower the brush/pad-holder deck by pressing the pedal (8).
3. Press the brush/pad-holder switch (51) and the vacuum system switch (52).
4. Press the washing water flow control switches (54) as necessary, depending on the type of cleaning to be performed.
5. Start cleaning, by moving the machines with the handlebar (2).

Stopping the machine

1. Stop the machine with the handlebar (2).
2. Turn off the brush/pad-holder and the vacuum system by pressing the switches (51 and 52).
3. Disconnect the power supply cable (3) from the electrical mains and place it on the holder (4).
4. Lift the brush/pad-holder deck by pressing the pedal (8).
5. Lift the squeegee (21) with the lever (7).
6. Make sure that the machine cannot move independently.

MACHINE OPERATION (SCRUBBING/DRYING)

1. Start the machine as shown in the previous paragraph.
2. If necessary, press the washing water flow control switches (54) as necessary, depending on the type of cleaning to be performed.
3. If necessary, adjust the squeegee balance adjusting handwheel (23).
4. If necessary, stop the machine and turn the adjusting handwheel (37); when turning it clockwise or counter-clockwise the machine forward speed can be adjusted.

5. If necessary, stop the machine and turn the forward speed adjusting handwheel (38) as shown below:

6. Turn it counter-clockwise to increase the forward speed;

7. Turn it clockwise to decrease the forward speed.

NOTE

For correct scrubbing/drying of floors at the sides of the walls, Nilfisk suggests to go near the walls with the right side of the machine as shown in figure 2.

Figure 2

P100106A

CAUTION!

To avoid any damage to the floor surface, turn off the brush/pad-holder when the machine stops in one place.

TANK EMPTYING

An automatic float shut-off system (33) turns off the vacuum system when the recovery tank (17) is full.

The vacuum system deactivation is signalled by a sudden increase in the vacuum system motor noise frequency, and 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 (52), then open the cover (18) and check that the float inside the grid (33) has gone down to the water level. Then close the cover (18) and turn on the vacuum system by pressing the switch (52).

When the recovery tank (17) is full, empty it according to the following procedure.

Recovery tank emptying

1. Stop the machine.
2. Disconnect the power supply cable (3) from the electrical mains and place it on the holder (4).
3. Lift the brush/pad-holder deck by pressing the pedal (8).
4. Lift the squeegee (25) with the lever (7).
5. Drive the machine to the appointed disposal area.
6. Empty the recovery tank with the hose (12). Then, rinse the tank with clean water. Use the removable hose (6) (if equipped).

Solution tank emptying

1. Perform steps 1 to 5.
2. Empty the solution tank with the hose (13). Then, rinse the tank with clean water.

AFTER USING THE MACHINE

After working, before leaving the machine:

1. Remove the brush/pad-holder according to the procedure shown in the relevant paragraph.
2. Empty the tanks (16 and 17) according to the procedure shown in the relevant paragraphs.
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.

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.

FIRST PERIOD OF USE

After the first 8 hours, check the machine fastening and connecting parts for proper tightening and check the visible parts for integrity and leakage.

MAINTENANCE

The lifespan of the machine and its maximum operating safety are ensured by correct and regular maintenance.

The following table 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 power supply cable disconnected from the electrical mains.

Moreover, read carefully the instructions in the Safety chapter before performing any maintenance procedure.

All scheduled or extraordinary maintenance procedures must be performed by qualified personnel, or by an authorised Service Center.

This Manual describes only the easiest 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
Power supply cable check
Squeezegee cleaning
Brush/pad cleaning
Tank and vacuum grid with float cleaning, and cover gasket check
Squeezegee blade check and replacement
Solution filter cleaning
Vacuum system motor filter cleaning
Screw and nut tightening check			(1)
Brush/pad-holder motor carbon brush check or replacement				(2)
Vacuum system motor carbon brush check or replacement				(2)

(1) And after the first 8 working hours.
(2) This maintenance procedure must be performed by an authorised Nilfisk Service Center.

MACHINE WORKING HOUR CHECK

(Only if the machine is equipped with hour counter)

1. Connect the power supply cable (3) to the electrical mains.
2. Press the switch (52) and read on the hour counter (53) the total number of working hours (scrubbing/drying) performed by the machine.
3. Press the switch (52) again.
4. Disconnect the power supply cable (3) from the electrical mains and place it on the holder (4).

POWER SUPPLY CABLE CHECK

1. Carefully check the power supply cable and the relevant plug for wear, cuts, cracks or other damages. If the power supply cable or the relevant plug is damaged, contact the Nilfisk Service Center before using the machine again.

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 floor.
2. Disconnect the power supply cable (3) from the electrical mains and place it on the holder (4).
3. Lower the squeegee (21) with the lever (7).
4. Loosen the handwheels (22) and remove the squeegee (21).
5. Disconnect the vacuum hose (11) from the squeegee.
6. Wash and clean the squeegee (Fig. 3). 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. 3) as shown in the previous paragraph.

2. Check that the edge (E, Fig. 3) 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:

3. Remove the tie rod (G) and disengage the fasteners (M) to adjust the rear blade (D); then engage the fasteners and install the tie rod.

4. Loosen the handwheels (I) and adjust the front blade (C); then tighten the handwheels.

5. Check the front blade (C) and rear blade (D) for integrity, cuts and tears; if necessary replace them as shown below. Check the front corner (J) of the rear blade for wear; if necessary, 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:

6. 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.

1. Connect the vacuum hose (11) to the squeegee.
2. Install the squeegee (21) and screw down the handwheels (22).
3. If necessary, adjust the squeegee balance adjusting handwheel (23).

Figure 3

S311344

BRUSH/PAD CLEANING

CAUTION!

It is advisable to wear protective gloves when cleaning the brush/pad because there may be sharp debris.

1. Remove the brush/pad as shown in Use chapter.
2. Clean and wash the brush/pad with water and detergent.
3. Check the brush bristles for integrity and wear; if necessary, replace the brush.
4. Check the pad for wear; if necessary, replace the pad.

TANK AND VACUUM GRID WITH FLOAT CLEANING, AND COVER GASKET CHECK

1. Disconnect the power supply cable (3) from the electrical mains and place it on the holder (4).
2. Drive the machine to the appointed disposal area.
3. Open the cover (18) to washing position (L, Fig. 3).
4. Wash with clean water the cover (A), the tanks (B and C) and the vacuum grid with automatic shut-off float (D). Drain the water from the tanks with the hoses (12 and 13).
5. If necessary, release the fasteners (E) and open the grid (D), recover the float (F), clean all the components and then reinstall them.
6. Check the tank cover gasket (G) for integrity.

NOTE

The gasket (G) creates vacuum in the tank that is necessary for vacuuming the recovery water.

If necessary replace the gasket (G) by removing it from its housing (H). When assembling the new gasket, install the joint (I) in the rear central area, as shown in the figure.

1. Check that the seating surface (J) of the gasket (G) is integral and adequate for the gasket itself.
2. Check the compensation hole (K) for clogging, and clean it if necessary.

NOTE

The hole (K) , allowing to compensate the air in the cover air gap, contributes to create vacuum in the tank.

1. Close the cover (A).

Figure 4

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VACUUM SYSTEM MOTOR FILTER CLEANING

1. Drive the machine on a level floor.
2. Disconnect the power supply cable (3) from the electrical mains.
3. Remove the recovery tank retaining plate (36).
4. Open the recovery tank.
5. If necessary, drain the water from the tank in order to make the filter visible.
6. Check that the pre-filter is clean. If necessary clean it with water and compressed air, then install it.
7. Perform steps 1, 2, 3 and 4 in the reverse order.

SOLUTION FILTER CLEANING

1. Drive the machine on a level floor.
2. Disconnect the power supply cable (3) from the electrical mains.
3. Close the solution tap (A, Fig. 5) under the machine, behind the right rear wheel. The tap (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), then remove the filter strainer (E). Clean and install them on the support (F).

NOTE

The filter strainer (E) must be correctly positioned on the housing (G) of the support (F).

1. Open the tap (A).

Figure 5

S311346

FUSE CHECK/REPLACEMENT

1. Disconnect the power supply cable (3) from the electrical mains but do not place it on the holder (4).
2. Move aside the recovery water drain hose (12).
3. Remove the power supply cable (3) from the holder (4).
4. Remove the screws (A, Fig. 6) and carefully move the panel (B).
5. Check/replace the following fuse: C) F1, electronic board: (1 A)
6. Perform steps 2 to 4 in the reverse order.

Figure 6

S311347

TROUBLESHOOTING

Trouble	Possible Cause	Remedy
The motors do not operate.	The power supply cable or the relevant plug is broken.	Replace the cable.
The dirty water vacuuming is insufficient.	The recovery tank is full.	Empty the tank.
	The hose is disconnected from the squeezee.	Connect.
	The vacuum grid is clogged or the float is closing.	Clean the grid or check the float.
	The squeezegee is dirty, or the squeezegee blades are worn or damaged.	Clean and check the squeezegee.
	The tank cover is not properly closed, or the gasket is damaged.	Close the cover properly or replace the gasket.
The solution flow is insufficient.	The solution filter is dirty.	Clean the filter.
	The recovery tank is dirty (the drain hole is clogged).	Clean the tank.
The squeezegee leaves marks on the floor.	There is debris under the squeezegee blades.	Remove the debris.
	The squeezegee blades are worn, chipped or torn.	Replace the blades.
	The squeezegee is not balanced with the handwheel.	Balance.

For further information refer to the Service Manual, available at any Nilfisk 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:

Brushes/pads
- Plastic hoses and components
- Electrical and electronic components (*)

(*) Refer to the nearest Nilfisk Center especially when scrapping electrical and electronic components.

INHOUDSOPGAVE

INLEIDING 2

DOEL EN INHOUD VAN DEZE HANDLEIDING 2

BETREFFENDE PERSONEN 2

OPBERGEN VAN DE HANDLEIDING 2

CONFORMITEITSVERKLARING 2

IDENTIFICATIEGEGEVENS 2

ANDERE GEBRUKERSHANDLEIDENGIN 2

VERVANGINGSONDERDELEN EN ONDERHOUD 2

MODIFICATIES EN VERBETERINGEN 3

BEDRIJFSCAPACITEIT 3

ALGEMENE OPMERKINGEN 3

VERPAKKING VERWIJDEREN/AFLEVERING 3

VEILIGHEID 3

GEBRUIKTE SYMBOLEN 3

ALGEMENE INSTRUCTIONS 4

BESCHRIJVING VAN DE MACHINE 6

OPBOUW VAN DE MACHINE 6

BEDIENINGSPANEEL 7

ACCESSIONS / OPTIES 7

• GEVAAR
• LETOP
  WAARSCHUWING
• ADVIES