VHW420 - Uncategorized NILFISK - Free user manual and instructions

USER MANUAL VHW420 NILFISK

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Instructions for use General information for using the machine Use the machine in accordance with the laws in force in the country where it is used. Besides the operating instructions and the laws in force in the country where the device is used, the technical regulations for ensuring safe and correct operation must also be observed (Legislation concerning environmental and labour safety, i.e. European Union Directive 89/391/EC and successive Directives). Do not perform any operation that could jeopardize the safety of people, property and the environment. Comply with the safety indications and prescriptions in this instruction manual. Proper uses This machine is suitable for commercial use, in hotels, schools, hospitals, factories, shops, o󰀩ces and apartment hotels for example, for hire and in any case for purposes other than normal domestic use. This machine is suitable for cleaning and vacuuming solid materials in indoor and outdoor environments. The machine has been designed to be used by one operator at a time. This machine consists of a vacuum unit, with an upstream lter unit and a container for collecting the vacuumed material. Improper Use CAUTION! The following use of the device is strictly forbidden: ■ Outdoors in case of atmospheric precipitation. ■ When not placed on horizontal level ground. ■ When the lter unit is not installed. ■ When the vacuum inlet and/or hose are turned to face parts of the human body. ■ Use without the cover on the vacuum unit. ■ When the dust container is not installed. ■ Use without the guards, protective covers and safety systems installed by the manufacturer. ■ When the cooling vents are partially or totally clogged. ■ When the machine is covered with plastic or fabric sheets. ■ Use with the air outlet partially or totally closed. ■ When used in narrow areas where there is no fresh air. Read the operating instructions and comply with the important safety recommendations identified by the word CAUTION! Operator's safety CAUTION! Before starting the machine, it is absolutely essential to read these operating instructions and to keep them handy for consultation. The machine can only be used by people who are familiar with the way it works and who have been explicitly authorised and trained for the purpose. Before using the machine, the operators must be informed, instructed and trained on how to work it and for which substances its usage is permitted including the safe method for removing and disposing of the vacuumed material. CAUTION! The use of the machine by people (including children) with limited physical and mental capacities or lacking in experience and knowledge is strictly forbidden, unless they are supervised by a person who is experienced in the use and safe handling of the machine. Children must be supervised to make sure they will not play with the machine. CAUTION! Before using the machine, always check that any hazardous condition has been eliminated and inform the people in charge about any operational fault. Check that all guards and protections are correctly mounted and that all safety devices are installed and ecient. Repairs must only be carried out when the machine is at a standstill and disconnected from the electricity and air supply mains. Never ever carry out repairs without having rst received the necessary authorization. CAUTION! Any changes made by the user without the Manufacturer’s explicit authorization shall invalidate the warranty and hold the Manufacturer harmless from any and all liabilities for damages caused by faulty products.VHW32x - VHW42x - VHW44x 3 C393

CAUTION! The following use of the device is strictly forbidden: ■ When the cable or plug is damaged. If appliance is not working as it should, has been dropped, damaged, left outdoors or dropped into water, return it to an authorized service center. ■ Vacuuming liquids with machine not equipped with specic original stopping systems. ■ Do not pull or carry by the cord, use the power cord as a handle, do not close a door on cord, or pull cord around sharp edges or corners. Do not run the appliance over the cord. Keep cord away from heated surfaces. ■ Vacuuming the following materials:

1. Burning materials (embers, hot ashes, lit

4. Flammable liquids, aggressive fuels (gasoline,

solvents, acids, alkaline solutions, etc.).

5. Explosive dust/substances and/or ones liable

to ignite in a spontaneous way (such as magnesium or aluminium dusts, etc.). Note: Fraudulent use is not admitted. Testing and guarantee ■ Testing Each machine is subjected to a nal test involving its operation and performances. This guarantees maximum e󰀩ciency during the work the machine must carry out. ■ Warranty The guarantee clauses are specied in the sales contract. How to request assistance In the event of faults or malfunctions requiring the intervention of specialized technicians, contact the Manufacturer or your nearest After-Sales Service Centre. Exclusion of liability The machine was delivered to the user according to the conditions valid at the time of purchase. For no reason what so ever shall the user be authorized to tamper with the machine. Contact your nearest After-Sales Service Centre in the event of faults. All attempts by the user or by unauthorized personnel to demount, modify or, more generally, tamper with any part of the machine shall void the guarantee and relieve the manufacturer of all responsibility for damage to either persons or property caused by such action. The manufacturer shall also be relieved of liability in the following cases: ■ Wrong installation. ■ Improper use of the machine by inadequately trained personnel. ■ Utilization contrary to the provisions in force in the country of use. ■ Incorrect or insu󰀩cient maintenance. ■ Use of non-genuine spares or use of spares that are not specically made for the model in question. ■ Total or partial failure to comply with the instructions. ■ Failure to forward the warranty certicate. ■ Exceptional environmental events Versions and variations Versions for dust harmful for the health Vacuum cleaners for dust harmful to health are classied according to di󰀨erent dust classication, in compliance with standard EN 60335-2-69 – Annexe AA: ■ L (low risk) suitable for separating dust with an exposure limit value of over 1 mg/m

, depending on the volume occupied; retains at least 99% of vacuumed particles; ■ M (medium risk) suitable for separating dust with an exposure limit value not lower than 0.1 mg/m

; retains at least 99.9% of vacuumed particles; ■ H (high risk) for separating all dust with an exposure limit value lower than 0.1 mg/m

, depending on the volume occupied, including carcinogenic and pathogenic dusts, such as asbestos; retains at least 99.995% of the vacuumed particles. [ NOTE ] ■ In the case of dust harmful to health, contact the local health and safety authorities, and observe national regulations in force both during use and disposal. ■ Radioactive substances are not included in the denition of the type of dust harmful to health described above. [ NOTE ] Machines designed for picking up sawdust and quartz- containing mineral dust shall be at least M-class. Versions for combustible powders (ACD) This machine is suitable to vacuum combustible dust, with the exception of magnesium dust, in areas not classied as ATE (normal locations) and certied in accordance with EN 60335- 2-69 - Annex AA. [ NOTE ] Refer to the manufacturer’s sales network for these versions. For ACD devices, see the instructions for “ACD” use.C393 4 VHW32x - VHW42x - VHW44x

ATEX variants [ NOTE ] Refer to the manufacturer’s sales network for these versions. For ATEX devices see the instructions for “ATEX” use. The manufacturer produces machines suitable to be used in potentially explosive atmospheres. These variants are manufactured according to directives and standards in force. The relevant additional instructions are supplied together with the machine. HEPA variants This machine can be equipped with an upstream lter (HEPA). The procedures for servicing and emptying the machine including removing the dust container, must only be performed by authorized personnel wearing protective clothing. Do not use without the complete lter system in place. General recommendations CAUTION! If an emergency situation occurs: ■ for example, accident - fault - lter breakage - re - etc. Disconnect the machine from the power supply and ask for assistance from qualied personnel. In case the user comes into contact with the vacuumed product, check the cautions shown on the safety technical sheet of the product, which must be made available from the employer. [ NOTE ] Check the place of work and substances tolerated for the machine suitable for liquids. CAUTION! The machines must not be used or stored outdoors, or in damp places. Only versions with the level sensor can be used for liquids, if not, they can only be used to vacuum dry materials. CAUTION! Version for liquids. If foam or liquid leaks out of the machine, turn it o immediately and contact qualied personnel for assistance. [ NOTE ] These devices must not be used in corrosive environment. Residual Risks After carefully considering the risks that are present in all machine operating phases, necessary measures were adopted in order to eliminate the risks for the operators, as far as possible, and/or limit or reduce the risks deriving from hazards that cannot be completely eliminated at the source. During operations and/or maintenance, operators are exposed to certain residual risks which, due to the nature of the operations themselves, cannot be completely eliminated. Therefore the installer is responsible for providing additional information and/or hazard signals based on the location of machine installation and the material that is handled. Risks due to electrical hazards during maintenance DANGER Risk of electrocution if accessing the electrical equipment during maintenance without having deactivated the electrical power supply. FORBIDDEN It is forbidden to work on the electric equipment before disconnecting the machine or its parts from the electrical line. MANDATORY Have the electrical maintenance operations performed by qualied personnel. Perform the checks on the electric equipment as specied in the manual. Risks to the presence of residual high temperature after stopping the vacuum unit. During maintenance and cleaning operations, the operator may come into contact while the machine is stopped, with parts of the vacuum unit with surfaces at high temperatures. Specic warning signs placed in strategic points indicate the hazard due to the presence of hot surfaces and the obligation for the user to wear personal protective equipment, in particular protective gloves. The potentially hot parts (high temperatures) are identied as follows:

CAUTION DANGEROUS TEMPERATURES EC Declaration of conformity Every machine comes with a EC Declaration of conformity. See fac-simile in g. 23. [ NOTE ] The Declaration of conformity is an important document and should be kept in a safe place to be presented to the Authorities on request.VHW32x - VHW42x - VHW44x 5 C393

Description of the machine Machine Parts and Labels Figure 1

1. Identication plate:

Model code, serial number, EC marking, year of manufacture, weight (kg)

2. Warning label for Class L - M - H - ACD vacuum cleaners.

9. PullClean lter cleaning system

10. Plug for connecting the vacuum cleaner to an electrical

Indicates that the panel is powered by the voltage indicated on the data plate The access to the panel is allowed to specialized personnel only who, before touching the electrical equipment, must disconnect the machine from its power source by turning the main switch to 0 - (o󰀨) and by removing the plug from the electrical socket. This machine creates a strong air ow which is drawn in through the vacuum inlet and blows out through the outlet. Before turning on the machine, t the vacuum hose into the inlet and then t the required tool on to the end part (refer to the manufacturer's accessory catalogue or Service Centre). The diameters of the authorized hoses are indicated in the Technical data table. The machine is equipped with a primary lter which enables it to be used for the majority of applications. In addition to the primary lter that retains the most common dust, a secondary lter (absolute lter) can be installed. This machine is equipped with an internal ba󰀪e plate which subjects the vacuumed substances to a circular centrifugal movement that makes them drop into the container. Figure 2 Vacuum cleaners for dust harmful to health and/or combustible dust are classied according to di󰀨erent dust classication, in compliance with standard EN 60335-2-69 – Annex AA:

The class H label reads the following. CAUTION! This vacuum cleaner contains dust hazardous for the health. Only authorised personnel wearing suitable personal protective equipment should empty and service the machine, including removing the means used to vacuum the dust. Do not use without the complete lter system in place. Appliances intended for use in atmospheres classied as explosive are constructed in accordance with 2014/34/EU Directive (ATEX):

Optional kits Various optional kits are available for converting the machine. On request, the machine can be supplied with optional kits already installed. However, they can also be installed at a later date. Please contact the sales network for further details. Instructions describing how to t the optional kits and the relative operation and maintenance manuals are supplied together with the optional kits. CAUTION! Use only supplied and authorised genuine spare parts. Accessories Various accessories are available; refer to the manufacturer’s accessory catalogue. CAUTION! Use only genuine accessories supplied and authorised by the manufacturer. Packing and unpacking All the dispatched equipment has been thoroughly checked before being delivered to the haulage contractor. On arrival, check the machine to see that it has not been damaged during transport. In case of damage, immediately lodge a complaint with the haulage contractor. Dispose of the packing materials in compliance with the laws in force.C393 6 VHW32x - VHW42x - VHW44x

Figure 3 Model A (mm) B (mm) C (mm) kg (*) VHW32x 500 900 1350 95 VHW32x IC - C 500 900 1650 110 VHW4xx 600 1050 1650 140 VHW4xx IC - C 600 1050 1950 160 (*) Weight with packing Unpacking, moving, use and storage To unpack the vacuum unit, remove the retainers with a hammer and a screwdriver. Also remove the fastening devices placed by the manufacturer when packing, by using suitable tools. Release the wheel brakes and remove the machine from the supporting platform, by using a ramp that can provide adequate capacity, and by driving the vacuum cleaner by the handle. Operate on at, horizontal surfaces. The load-bearing capacity of the surface the machine is placed on must be suitable for bearing its weight. If the device is to work in a xed position, allow wide space around the device in order to ensure freedom of the movement and allow the maintenance sta󰀨 to operate with ease. CAUTION! The manufacturer shall not be liable for any damages caused to the machine during lifting, when the lifting equipment supplied by the manufacturer is not used. CAUTION! When several supporting platforms are provided, the supporting platform to which the machine is anchored must be handled with a forklift truck that can provide adequate capacity. Then unpack the machine by laying it down on a at and horizontal surface that can provide adequate capacity for the vacuum cleaner weight. Setting to work - connection to the power supply CAUTION! ■ Make sure there is no evident sign of damage to the machine before starting work. ■ Before plugging the machine into the electrical mains, make sure the voltage rating indicated on the data plate corresponds to that of the electrical mains. ■ Connect the plug into a socket with a correctly installed ground contact/connection. Make sure that the machine is turned o. ■ The plugs and connectors of the connection cables must be protected against splashes of water. ■ Check that for proper connection to the electrical mains. ■ Use the machine only when the cables that connect to the electricity mains are in perfect condition (damaged cables could lead to electric shocks!). ■ Regularly check there are no signs of damage, excessive wear, cracks or ageing on the electric cable. CAUTION! ■ When the device is operating avoid stepping on, crushing, pulling or damaging the cable that connects to the electrical mains. ■ When the device is operating avoid disconnecting the cable from the mains only by pulling the plug (do not pull on the cable itself). ■ Only replace the electric power cable with one of the same type as the original: H07 RN-F, The same rule applies if an extension is used. ■ The cable must be replaced by the manufacturer’s Service Centre sta or by equivalent qualied personnel. The system safety o󰀩cers must: ■ Prevent any improper use or manoeuvre. ■ Make sure that the safety devices are not removed or tampered with. ■ Check that all maintenance operations are regularly performed; ■ Make sure that no machine part (couplings, holes, etc.) is modied to attach additional devices; ■ Make sure that only original Nilsk spare parts are used. NOTE The user shall be responsible for ensuring that installation complies with the all relevant local provisions. The equipment must be installed by qualied technicians who have read and understood the instructions herein.VHW32x - VHW42x - VHW44x 7 C393

Extensions If an extension cable is used, make sure it is suitable for the power input and protection degree of the machine. Max power (kW) 3 5 15 22 Minimum section (mm2) 2.5 4 10 16 Maximum length (m) 20 Cable H07 RN - F CAUTION! ATEX variant: extensions, plugged-in electrical devices and adapters cannot be used when vacuuming ammable dust. CAUTION! Sockets, plugs, cable clamps, connectors and installation of the extension cable must maintain the IP protection degree of the machine, as indicated on the data plate. CAUTION! The machine power socket must be protected by a dierential circuit-breaker with surge current limitation, that shuts o the power supply when the current discharged to the ground exceeds 30 mA for 30 msec. or an equivalent protection circuit. CAUTION! Never spray water on the machine: this could be dangerous for people and could short circuit the power supply. Dry applications [ NOTE ] The supplied lters and the bag (if applicable) must be installed correctly. CAUTION! Comply with the safety regulations governing the vacuumed materials.C393 8 VHW32x - VHW42x - VHW44x

≤2.5 Protection IP 55 Insulation Class I Container capacity L 25 46 Vacuum inlet (diameter) mm 50 70 Allowed hoses (L) mm 50 70 Allowed hoses (M-H) mm 40 50 Primary lter surface m

Primary lter surface ST version m

≤2.5 Protection IP 55 - 65 65 55 - 65 65 55 - 65 Insulation Class I Container capacity L 25 46 Vacuum inlet (diameter) mm 50 70 Allowed hoses (L) mm 50 70 Allowed hoses (M-H) mm 40 50 Primary lter surface m

Primary lter surface ST version m

Controls and indicators Figure 5

1. Vacuum unit start/stop switch

Use the button to start/stop the rst motor. If the indicator is lit, the main motor is ON.

3. PullClean lter cleaning system

Inspections prior to starting Figure 6 Before starting, check that: ■ The lters are installed. ■ The closing band is properly tightened. ■ The vacuum hose and tools have been correctly tted into the vacuum inlet (1). ■ In case of liquid application, the liquid mechanical stop is properly installed inside the liquid container: ■ The bag or safety container is installed, if applicable. CAUTION! Do not use the device if the lters are faulty. Starting and stopping Figure 5 CAUTION! Before starting the machine, lock the castor brakes ■ Turn the switch (1) to “I” position to start. ■ Turn the switch (1) to “0” position to turn the vacuum cleaner o󰀨. [ NOTE ] Check the machine operation. If the machine does not vacuum any air, the rotation direction is not correct; remove the plug from the socket and turn the selector inside the plug to perform the correct phase connection. Machines equipped with an electrical system preset for start from vacuum inlets ■ Turn the main switch to “I” to electrically power the machine. ■ Press the start button to start the machine. If the machine is equipped with vacuum inlet sensor, vacuuming will start automatically, after performing the above procedure, when the rst inlet will be opened by the operator. The machine will stop two minutes after the last inlet is closed by the operator. To immediately stop the machine press the stop button (6). CAUTION! Too frequent starts of the machine can damage the motor; it is advisable not to modify the tripping time of the sensor located on the vacuum inlets. Emergency stopping Turn the switch to “0” to turn o󰀨 the machine. Operation Figure 7 Vacuum gauge (2): green zone (3), red zone (1) When using the machine, check the ow control: ■ when the machine is operating, the pointer of the vacuum gauge must remain in the green zone (3) to ensure that the speed of the intake air does not drop below the safety value of 20 m/sec; ■ If the pointer is in the red zone (1) it means that the speed of the air in the vacuum hose is less than 20 m/s, and that the machine is not operating in optimal conditions. Shake or replace the lter. ■ during normal operation conditions, close the vacuum hose, the pointer of the vacuum gauge must switch from the green zone (3) to the red zone (1). CAUTION! The air speed in the vacuum hose must not be less than 20 m/s. Condition indicated by the vacuum gauge pointer in the green zone (3). CAUTION! All machines can be used only with hoses whose diameters comply with the specications in the “Technical Data” table. CAUTION! Consult the “Troubleshooting” chapter if faults occur. At the end of a cleaning session ■ Turn o󰀨 the machine and remove the plug from the socket. ■ Wind up the connection cable. ■ Empty the container and clean the machine as described in the “Maintenance, cleaning and decontamination” paragraph. ■ Wash the container with clean water if aggressive substances have been vacuumed. ■ Store the machine in a dry place, out of reach of unauthorised people. ■ Lock the castor brakes. ■ During transport and when not using the machine, close the vacuum inlet with the relevant plug (if equipped).VHW32x - VHW42x - VHW44x 11 C393

CAUTION! Disconnect the machine from its power source before cleaning, servicing, replacing parts or converting it to obtain another version/variant. ■ Carry out only the maintenance operations described in this manual. ■ Use only original spare parts. ■ Do not modify the machine in any way. Failure to comply with these instructions could jeopardize your safety. Moreover, such action would immediately void the EC declaration of conformity/ incorporation issued with the machine. CAUTION! For maintenance procedures not described in this manual, please contact the manufacturer's technical support or sales network. CAUTION! To guarantee the safety level of the machine, only original spare parts supplied by the manufacturer should be used. CAUTION! The precautions described below must be taken during all maintenance operations, including cleaning and replacing the primary and absolute lters. CAUTION! This Class H machine can collect dust hazardous for the health. The procedures for servicing and emptying the machine including removing the dust bag, must only be performed by specialised personnel wearing protective clothing. Do not use without the complete lter system in place. CAUTION! In particular, on Class H machines, the ltering eciency of the machine must be checked at least once a year, or more often if required by national legislation. The test method for checking the ltering eciency of the machine is indicated in standard EN 60335-2-69, par. 22.AA.201.2. If the test isn't passed, it must be repeated after the class H lter has been changed. ■ To allow the user to carry out the maintenance operations, the machine must be disassembled, cleaned and overhauled as far as is reasonably possible, without causing hazards for the maintenance sta󰀨 or other people. The suitable precautions include decontamination before disassembling the machine, adequate ltered ventilation of the exhaust air from the room in which it is disassembled, cleaning of the maintenance area, and suitable personal protection. ■ The external parts of the machine must be decontaminated by cleaning and vacuuming methods, dedusted or treated with sealant before being taken out of a hazardous zone. ■ All parts of the machine must be considered as contaminated when they are removed from the hazardous zone and appropriate actions must be taken to prevent dust from dispersing. ■ When maintenance or repair procedure are carried out, all the contaminated elements that cannot be properly cleaned, must be eliminated. These elements must be disposed of in sealed bags in accordance with applicable regulations and local laws on the disposal of such material. This procedure must also be followed for lter disposal (primary and absolute lters). ■ Compartments that are not dust-tight must be opened with suitable tools (screwdrivers, wrenches, etc.) and thoroughly cleaned. ■ A check must be carried out by the manufacturer or the personnel of the same at least once a year. For example: Check the air lters to nd out whether the air-tightness of the machine has been impaired in any way and make sure that the electric control panel operates correctly. Filter cleaning Primary lter cleaning with PullClean system Figure 5 According to the quantity of vacuumed material, if the vacuum gauge pointer (2, Fig. 7) goes from the green zone (3, Fig. 7) to the red zone (1, Fig. 7), clean the primary lter by closing the inlet and by opening the PullClean system ap, repeat the procedure 3 or 4 times, for 1 or 2 seconds each time. CAUTION! Perform this procedure with the machine running. Wait before restarting the machine, to allow the dust to settle. Replace the lter element if the vacuum gauge pointer stays in the red zone even after the lter has been shaken (see “Primary and absolute lters disassembly and replacement”). [ NOTE ] If the indicator is still in the red area. The vacuum hose or one of the accessories may be clogged, and not the lter. Clean these parts if this is the case. Maintenance, cleaning and decontaminationC393 12 VHW32x - VHW42x - VHW44x

Star lter cleaning with manual system According to the quantity of vacuumed material, if the vacuum gauge pointer (2, Fig. 7) goes from the green zone (3, Fig. 7) to the red zone (1, Fig. 7), shake the primary lter by turning the lever clockwise/counter-clockwise for at least 5 complete cycles. CAUTION! Stop the machine before using the lter shaker. Do not shake the lter with the machine functioning, as this could damage the lter. Wait before restarting the machine, to allow the dust to settle. Replace the lter element if the indicator is red, even after the lter has been shaken (see “Primary and absolute lters disassembly and replacement”). [ NOTE ] If the indicator is still in the red area. The vacuum hose or one of the accessories may be clogged, and not the lter. Clean these parts if this is the case. Primary cartridge lter cleaning with automatic system Figure 8

1. Filter cleaning solenoid valve 1

2. Filter cleaning solenoid valve 2

3. Filter cleaning solenoid valve 3

4. Filter cleaning solenoid valve 4

5. Cartridge container pressure switch

When it is necessary to vacuum very ne dust continuously without stopping to clean the lters, the Manufacturer provides the machine of a multi-cartridge ltering system. The unit is equipped with a fully automatic electropneumatic device to alternately clean the ltering cartridges, which guarantees continuous service. Electric panel, powered with a 24V rating, is complete with cyclic timer to regulate the following times: T1 Filter cleaning time Opening time of the solenoid valve for backwashed air exhaust into the cartridge. The shorter the time, the more energetic the cleaning action will be. T2 Work hold time Time between one cartridge cleaning operation and the next. T3 Time between cleaning cycles Time between one cleaning cycle and the next. Check the arrows on the knobs of the timer for the exact regulation. Replace the lter element if the vacuum gauge pointer stays in the red zone even after the lter has been shaken (see “Primary and absolute lters disassembly and replacement”). [ NOTE ] If the indicator is still in the red area. The vacuum hose or one of the accessories may be clogged, and not the lter. Clean these parts if this is the case. Primary cartridge lter cleaning with InniClean system The ltering cartridges serve the purpose of ltering the intake air. The vacuum cleaner is equipped with solenoid valves that, by deecting the air coming out of the blower, allow for cyclic cleaning of the ltering cartridges. The fully automatic system grants work continuity and is driven by a cyclic timer that allows to adjust the intervals T0, T1, T2 which dene the cleaning cycle. CAUTION! The factory setting of the cycle intervals is the one that allows for a better cleaning in the majority of applications, for this reason the factory setting should not be modied. If necessary, for heavy applications (for example, to collect heavy quantities of very thin dust - more than 3 kg per minutes), it is possible to modify the intervals by following the instructions in the Service Manual, available at the Manufacturer's Service Centre. Replace the lter element if the vacuum gauge pointer stays in the red zone even after the lter has been shaken (see “Primary and absolute lters disassembly and replacement”). [ NOTE ] If the indicator is still in the red area. The vacuum hose or one of the accessories may be clogged, and not the lter. Clean these parts if this is the case. Container and dust bag cleaning Emptying the container CAUTION! Before proceeding with these operations, turn o the machine and remove the plug from the power socket. Check the machine ltration class. Before emptying the container it is advisable to clean the lter (see “Cleaning the primary lter” paragraph). Figure 1 ■ Release the dust container (4) with the lever (5), then remove and empty it. ■ Clean the machine as described in the “Maintenance, cleaning and decontamination” paragraph. ■ Wash the container with clean water if aggressive substances have been vacuumed. ■ Make sure the gasket is in perfect condition and correctly positioned. ■ Place the container back in position and secure it again. [ NOTE ] After the cleaning session, leave the machine running for at least 60 seconds before turning it o. Avoid switching on/o too frequently.VHW32x - VHW42x - VHW44x 13 C393

Dust Bag Figure 9 The machine can be equipped with dust collection bag. In this case, the machine must be equipped with optional accessories (depressor and grid). If the bag is not installed or is installed improperly, it could create health risks for people exposed. Paper Bag and Safe Bag for dust collection Figure 10 The machine can be equipped with dust collection bag. In this case, the machine must be equipped with a specic container and a cap on the side. If the bag is not properly installed, it could create health risks for people exposed. [ NOTE ] The safe bag system is suitable to collect toxic dust to ensure that the user does not come into contact with the product. Dust bag replacement CAUTION! ■ Before proceeding with these operations, turn o the machine and remove the plug from the power socket. ■ These operations can only be carried out by trained and qualied personnel who must wear adequate clothing, in compliance with the laws in force. ■ In case of hazardous and/or harmful dust, use only the bags recommended by the manufacturer (see “Recommended spare parts”). ■ The bag must only be disposed of by qualied personnel and in compliance with the laws in force. ■ Use only original Nilsk bags. ■ Only use bags suitable for the machine class you are using. CAUTION! Take care not to raise dust during this operation. Wear a P3 mask and other protective clothing plus protective gloves (PPE) suited to the hazardous nature of the dust collected, refer to the laws in force. How to replace the Dust Bag Figure 9 ■ Close the inlet by using the relevant cap (if equipped). ■ Release the dust container. ■ Remove the dust bag and close it with a clamp, if necessary. ■ Place a new bag, taking care to wrap it around the outer wall of the dust container. ■ Set the dust container into the machine again. How to replace the Paper Bag Figure 10 ■ Close the inlet by using the relevant cap (if equipped). ■ Release the dust container. ■ Remove the bag and close it with the relevant cap (1) as shown in the gure. ■ Insert a new bag, making sure the bag inlet is sealed. ■ Set the dust container into the machine again. How to replace the Safe Bag Figure 10 ■ Remove and put the vacuum hose in a safe and dust-free place. ■ Close the inlet by using the relevant cap (if equipped). ■ Release the dust container. ■ Close the Safe Bag by pulling the “guillotine” seal (2). ■ Close the plastic bag hermetically using the relevant band (3). ■ Use the sticky tape (4) to close the bottom of the plastic bag. ■ Remove the relevant connection (5) of the bag from the vacuum inlet. ■ Insert a new safe bag, making sure the vacuum inlet is well connected to the bag attachment, to grant the sealing. ■ Wrap the plastic bag around the dust container external wall. ■ Place the dust container in the vacuum cleaner. Primary and absolute lter replacement CAUTION! When the machine is used to vacuum hazardous substances, the lters become contaminated, therefore: ■ Work with care and avoid spilling the vacuumed dust and/or material; ■ place the disassembled and/or replaced lter in a sealed plastic bag; ■ close the bag hermetically; ■ dispose of the lter in accordance with the laws in force. CAUTION! Filter replacement is a serious matter. The lter must be replaced with one of identical characteristics, ltering surface and category. Otherwise the machine will not operate correctly. Before proceeding with these operations, turn o the machine and remove the plug from the power socket. CAUTION! Before performing these operations, clean the lter as described in the “Maintenance, cleaning and decontamination” paragraph.C393 14 VHW32x - VHW42x - VHW44x

CAUTION! Take care not to raise dust during this operation. Wear a P3 mask and other protective clothing plus protective gloves (PPE) suited to the hazardous nature of the dust collected, refer to the laws in force. CAUTION! Reassemble with care to avoid trapping your hands between the vacuum unit and the container. Use gloves that provide protection against mechanical risks (EN

388) with a level of protection CAT. II.

CAUTION! Do not use the Class H lter again after having removed it from the machine. Primary lter replacement, for machines equipped with star lter with manual cleaning system Figure 11 ■ Remove the vacuum hose (1). ■ Use the lever (2) to remove the cover (3) together with the primary lter. ■ Remove the old lter from the cage. ■ Dispose of the old lter according to the laws in force. ■ Fit the new lter and secure it in the cage. ■ Install the cover and the primary lter in the reverse order of removal. Primary cartridge lter replacement, for machines equipped with PullClean cleaning system Figure 12 ■ Remove the vacuum hose (1). ■ Use the lever (2) to remove the cover (3) together with the primary lter. ■ Remove the lter holder (4). ■ Disassemble the lters (6) from the holder by turning them counter-clockwise. ■ Assemble the new lters (6) by turning them clockwise and check the gasket (5) is not torn or broken, otherwise replace it. ■ Install the cover and the primary lter in the reverse order of removal. [ NOTE ] The cartridges must be fully tightened by hand; check that cartridge gasket is tightened against the upper support. In any case, do not apply a tightening torque higher than 12 Nm. Primary cartridge lter replacement, for machines equipped with InniClean cleaning system Figure 13 ■ Disassemble the connector (1). ■ Remove the vacuum hose (2). ■ Remove the blower hose (3). ■ Use one of the levers (4) to disassemble the InniClean unit (5) together with the lter protections. ■ Disassemble the old lters (6) from the guards by turning them counter-clockwise. ■ Assemble the new lters (6) on the guards by turning them clockwise. ■ Install the InniClean unit in the container by performing the procedure in the reverse order. [ NOTE ] The cartridges must be fully tightened by hand; check that cartridge gasket is tightened against the upper support. In any case, do not apply a tightening torque higher than 12 Nm. Primary cartridge lter replacement, for machines equipped with automatic cleaning system CAUTION! Before performing any operation on the lter assembly, shut o the compressed air supply to the tank and vent o all the air from the tank, through the tap. Stand well back to prevent air from blasting into the face. Figure 14

8. Pneumatic supply connection

11. Tank fastening screws

■ Loosen the clamp (2). ■ Remove the vacuum hose (1). ■ Operate the levers (4). ■ Remove the cover (3) and the lter ring (5). ■ Disconnect the power supply cable (7) and the compressed air supply from the air intake coupling (8). ■ Remove the cartridge assembly (6). ■ Disconnect the connectors (10) and the union (9). ■ Disassemble the air tank by operating on the screws (11). ■ Unlock the fastening devices (12) and lift the cartridges (13), paying attention to the dust on them and place them in a plastic bag.VHW32x - VHW42x - VHW44x 15 C393

Upstream absolute lter replacement Figure 15 ■ Loosen the knob (1) and turn the arm (2) counter- clockwise to remove the container (4) from the machine and lock it by tightening the knob (1). ■ Loosen the knob (3) to release the absolute lter (5). ■ Let the absolute lter drop on the bottom of the bag (7). ■ Close the bag with the relevant clamps and cut. ■ Insert the new absolute lter (5) inside the new bag (7) with the ange looking upwards. ■ Fasten the new bag (7) to the container (4) with the new ring for bag (6). ■ Remove the old ring for bag (6) with the bag (7) from the container (4) and move it to the lter ange. ■ Overturn the absolute lter (5) inside the bag (7) in order to move to the bottom part of the bag the end part of the old bag and the corresponding rubber ring. ■ Lift the absolute lter (5) from the bottom of the bag and place it inside the container (4) then slightly tighten the knob (3) so that the absolute lter (5) is supported. ■ Roll up the bag (7) in order to remove the air inside; it must be as at as possible under the absolute lter ange (5). ■ Fasten the absolute lter (5) by tightening the knob (3). ■ Loosen the knob (1), turn the arm (2) clockwise in order to insert the container (4) in the machine, then lock the arm (2) with the knob (1). Downstream absolute lter replacement Figure 16 ■ Unscrew the knob (1), and remove the cover (2). ■ Remove the absolute lter (3) and place it in a plastic bag, close the bag hermetically and dispose of the lter in accordance to the laws in force. ■ Insert a new absolute lter (3) with the same ltering characteristics as the removed one. ■ Reinstall the cover (2) by fastening it with the knob (1). Installation, cleaning and replacement of the separator (optional) Figure 17 [ NOTE ] Instructions describing how to t the optional kits and the relative operation and maintenance manuals are supplied together with the optional kits. [ NOTE ] If there is only a dust deposit on the separator (4) allow the dust to drop through the central hole. The separator (4) should rst be disassembled in order to be perfectly cleaned: ■ Release the closing hooks (1) of the cover (2) and remove the cover. ■ Remove the lter. ■ Unscrew the two screws (3) and remove it from the container. ■ Replace the part if it is excessively worn. ■ Reinstall the separator (4). ■ Lock it and x it by means of the two screws (3). ■ Fit the lter back in place, close the cover (2) and lock it by means of the two the closing hooks (1). Tightness inspection Hoses check Figure 18 Make sure that connecting hoses (1) are in a good condition and correctly xed. If the hoses are damaged, broken or badly connected to the unions, they must be replaced. When sticky materials are treated, check for possible clogging along the hose, in the inlet and on the ba󰀪e plate inside the ltering chamber. To clean, scrape the inlet (2) from the outside to remove deposits. Filtering chamber gasket check for machines equipped with dust container Figure 19 If the gasket (2) between the container (3) and the ltering chamber (1) is torn, broken, etc. replace the gasket (2). Disposal The crossed-out wheeled bin symbol on the equipment indicates that used electrical and electronic equipment must be collected and disposed of separately from household waste. The correct disposal of the equipment will help prevent potential negative consequences for the environment and human health. Electrical and electronic household equipment must be disposed of at the separate collection points in the residence area. Please note that commercial electrical and electronic equipment should be disposed of separately from the municipal waste stream. We will be pleased to inform you about suitable disposal options. Wiring diagrams Figure 20 [ NOTE ] In the case of machines equipped with an electrical control panel, refer to the paper wiring diagram supplied with the machine documentation.C393 16 VHW32x - VHW42x - VHW44x

Troubleshooting Problem Cause Remedy The machine does not start Lack of power supply Check for power at the socket. Check the condition of the socket and the cable. Ask for assistance to be performed by a qualied manufacturer's technician. The machine revolutions increase Clogged primary lter Use the lter shaker (models with manual lter shaker). Replace it if this is not su󰀩cient. Clogged vacuum hose Check the vacuum hose and clean it. Dust leaks from the machine The lter is torn Replace it with another of identical type. Inadequate lter Replace it with another of a suitable category and check. The vacuum cleaner suddenly stops. Circuit breaker activation Check the setting. Check the motor electrical input. Contact an authorised after-sales service centre if necessary. The vacuum cleaner blows instead of vacuuming Incorrect connection to the electrical mains Ask for assistance from qualied personnel to perform the correct phase connection. Electrostatic current on the machine Missing or ine󰀩cient grounding Check all ground connections. In particular on the vacuum inlet tting; replace the hose with an antistatic hose.VHW32x - VHW42x - VHW44x 17 C393