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VC 20M-X
VC 20L-X
VC 40M-X
VC 40L-X

Original operating instructions

Information about the documentation

About this documentation

  • Read this documentation before initial operation or use. This is a prerequisite for safe, trouble-free handling and use of the product.
  • Observe the safety instructions and warnings in this documentation and on the product.
  • Always keep the operating instructions with the product and make sure that the operating instructions are with the product when it is given to other persons.

Explanation of symbols

Warnings

Warnings alert persons to hazards that occur when handling or using the product. The following signal words are used:
DANGER
DANGER !
  • Draws attention to imminent danger that will lead to serious personal injury or fatality.
WARNING
WARNING !
  • Draws attention to a potential threat of danger that can lead to serious injury or fatality.
CAUTION
CAUTION !
  • Draws attention to a potentially dangerous situation that could lead to personal injury or damage to the equipment or other property.

Symbols in the documentation

The following symbols are used in our documentation:
Image alternative Read the operating instructions before use
Image alternative Caution
Image alternative Instructions for use and other useful information
Image alternative Dealing with recyclable materials
Image alternative Do not dispose of electric equipment and batteries as household waste

Symbols in the illustrations

The following symbols are used in our illustrations:
Image alternative These numbers refer to the corresponding illustrations found at the beginning of these operating instructions
Image alternative The numbering reflects the sequence of operations shown in the illustrations and may deviate from the steps described in the text
Image alternative Item reference numbers are used in the overview illustrations and refer to the numbers used in the Product overview section
Image alternative This symbol is intended to draw your special attention to certain points for handling the product.

Product-dependent symbols

Symbols on the product

The following symbols can be used on the product:
Image alternative The power tool supports near-field communication (NFC) technology, which is compatible with iOS and Android platforms.
Image alternative If applied on the product, the product has been certified by this certification body for the US and Canadian markets according to the applicable standards.

Prohibition symbols

The following prohibition symbols are used on the product:
Image alternative Lifting by crane prohibited

Special stickers on the product

WARNING: This vacuum cleaner contains dusts that are hazardous to health. Only trained specialists wearing suitable protective equipment are permitted to undertake emptying and maintenance, including disposal of the dust bag. Operate the vacuum cleaner only with the filter system complete and in full working order.
One of the following warning stickers is affixed to the vacuum cleaner:
VC 20L-X
VC 40L-X
 Warning sticker, L-class vacuum cleaners:
Image alternative
Make sure that the warning sticker is clearly visible.
VC 20M-X
VC 40M-X
 Warning sticker, L-class vacuum cleaners:
Image alternative
Make sure that the warning sticker is clearly visible.

Product information

Hilti products are designed for professional users and only trained, authorized personnel are permitted to operate, service and maintain the products. This personnel must be informed of any particular hazards that may be encountered. The product and its ancillary equipment can present hazards if used incorrectly by untrained personnel or if used not in accordance with the intended use.
The type designation and serial number are stated on the rating plate.
  • Write down the serial number in the table below. You will be required to state the product details when contacting Hilti Service or your local Hilti organization to inquire about the product.
    Product information
    Wet/dry vacuum cleaner
    		 VC 20M-X
    VC 20L-X
    VC 40M-X
    VC 40L-X
    Generation
    		 01
    Serial no.

Declaration of conformity

Image alternative
We declare, on our sole responsibility, that the product described here complies with the applicable directives and standards. A copy of the declaration of conformity can be found at the end of this documentation.
The technical documentation is filed here:
Hilti Entwicklungsgesellschaft mbH | Tool Certification | Hiltistrasse 6 | D-86916 Kaufering, Germany

Safety

General safety instructions

In addition to the safety instructions given in the various sections of these operating instructions, the following points must be strictly observed at all times.
  • Read all the instructions. Failure to follow all the instructions listed below may result in electric shock, fire and/or serious injury.
  • If the appliance is used in conjunction with an electric tool, read and follow the operating instructions for the electric tool and all the warnings.
  • Modification of the appliance is not permitted.
  • Use the right appliance for the job. Do not use the appliance for purposes for which it was not intended. Use it only as directed and when in faultless condition.
  • Before beginning work with the appliance, find out how to operate it correctly and about any hazards associated with the materials it will be picking up and how these materials can be disposed of.
  • Take the influences of the surrounding area into account. Do not use the appliance where there is a risk of fire or explosion.
  • The appliance may only be used by persons who are familiar with it, have been trained on how to use it safely and who understand the resulting hazards. The appliance is not intended for use by children. Children must be supervised in order to ensure that they don’t play with the appliance.
  • Store appliances in a secure place when not in use. When not in use, appliances must be stored in a dry, high place or locked away out of reach of children.

Personal safety

  • Stay alert, watch what you are doing and use common sense when working with the product. Do not use the vacuum cleaner while you are tired or under the influence of drugs, alcohol or medication. A moment of inattention while operating the appliance may result in serious personal injury.
  • The user and any other persons in the vicinity must wear suitable eye protection, a hard hat, ear protection, protective gloves, safety footwear and breathing protection while the appliance is in use or while maintenance work on it is being carried out.
  • Make sure that the vacuum cleaner cannot roll away or fall.
  • Engage the wheel brakes so that the vacuum cleaner stands securely. If the wheel brakes are disengaged the vacuum cleaner may run away out of control.
  • Observe the accident prevention regulations applicable in your country.
  • If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used. Use of a vacuum cleaner can reduce dust-related hazards.

Use and care of the appliance

  • Never leave the appliance unattended.
  • Do not deactivate the filter cleaning system when vacuuming up hazardous dusts, especially when the appliance is used in combination with power tools that generate dust.
  • Protect the appliance from frost.
  • Clean the water level limiting device regularly with a brush, in accordance with the instructions, and check it for signs of damage.
  • When fitting the suction head on to the vacuum cleaner, take care to avoid pinching your fingers or damaging the supply cord. This presents a risk of injury or damage.
  • Check the appliance and its accessories for any damage. Guards, safety devices and any slightly damaged parts must be checked carefully to ensure that they function faultlessly and as intended. Check that moving parts function faultlessly, without sticking, and that no parts are damaged. In order to ensure faultless operation of the appliance, all parts must be fitted correctly and must meet the necessary requirements.
  • Have the appliance serviced by a qualified repair person using only genuine Hilti spare parts. The safety of the appliance can thus be maintained.
  • Always unplug the supply cord from the power outlet when the appliance is not in use (during breaks), before cleaning and maintenance and before changing the filter or accessories. This preventive safety measure reduces the risk of starting the appliance accidentally.
  • Never pull the vacuum cleaner by the supply cord to a new working position. Do not run the wheels of the vacuum cleaner over the supply cord.
  • Do not transport the appliance by crane.
VC 20M-X
VC 40M-X
 Additionally in the case of M-class vacuum cleaners
  • Close the hose inlet socket with the cap before transporting the appliance and when it is not in use.

Electrical safety

  • The plug on the supply cord of the appliance must match the outlet. Do not change the plug in any way. Do not use adapter plugs with earthed (grounded) appliances. Unmodified plugs and matching outlets reduce risk of electric shock.
  • Insert the plug in a suitable earthed/grounded power outlet which has been correctly and safely installed and is in compliance with local regulations. If you are in doubt about the effectiveness of the power outlet’s earth/ground connection, have it checked by a qualified specialist.
  • Avoid body contact with earthed or grounded surfaces such as pipes, radiators, cookers, stoves and refrigerators. There is an increased risk of electric shock if your body is grounded.
  • Do not expose the appliance to rain or wet conditions. Water entering an electric appliance will increase the risk of electric shock.
  • Check to ensure that the supply cord does not lie in a puddle of water.
  • Check the appliance’s supply cord at regular intervals and have it replaced by Hilti Service if damage is found. Check extension cords at regular intervals and replace them if found to be damaged.
  • Do not touch the supply cord or extension cord if they are damaged while working. Disconnect the supply cord plug from the power outlet. Damaged supply cords or extension cords present a risk of electric shock.
  • The electric supply cord may be replaced only with a cord of the type specified in the operating instructions.
  • Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the appliance. Keep the cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.
  • When operating an electric appliance outdoors, use only extension cords of a type suitable for outdoor use. Use of an extension cord suitable for outdoor use reduces the risk of electric shock.
  • In the event of an interruption in the electric supply, switch the appliance off and unplug it from the power outlet.
  • Use the power outlet on the appliance only for the purposes described in the operating instructions.
  • Never operate the appliance when it is dirty or wet. Dust (especially dust from conductive materials) or dampness adhering to the surface of the appliance may, under unfavorable conditions, lead to electric shock. Dirty or dusty appliances should thus be checked by Hilti Service at regular intervals, especially if used frequently for working on conductive materials.

Workplace

  • Ensure that the workplace is well lit.
  • Ensure that the workplace is well ventilated. Exposure to dust at a poorly ventilated workplace may result in damage to the health.
  • Keep the workplace tidy. Objects which could cause injury should be removed from the working area. Untidiness at the workplace can lead to accidents.
  • Do not operate the appliance in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. Electric appliances cause sparks which may ignite the dust or fumes.

The material vacuumed up

  • Do not use the vacuum cleaner to vacuum up hazardous dusts of a dust class higher than the dust class for which the vacuum cleaner is rated. Do not use the vacuum cleaner to vacuum up flammable and/or explosive dusts (e.g. magnesium or aluminum dust). Do not use the vacuum cleaner to vacuum up materials hotter than 60 °C (140 °F) (e.g. glowing cigarettes, hot ash).
  • Do not use the appliance to vacuum up flammable, explosive or aggressive liquids (coolants and lubricants, gasoline, solvents, acids (pH < 5), alkalies (pH > 12.5), etc.).
  • Switch the vacuum cleaner off immediately if foam or liquids escape from it.
  • Wear protective gloves when using the appliance to vacuum up hot materials at temperatures up to 60 °C (140 °F).
  • When working with mineral drilling slurry, wear protective clothing and avoid skin contact with the slurry (pH > 9: caustic).
  • Avoid contact with alkaline or acidic liquids. If contact accidentally occurs, rinse with water. In the event of the liquid coming into contact with the eyes, rinse the eyes with plenty of water and consult a doctor.
VC 20L-X
VC 40L-X
 Additionally in the case of L-class vacuum cleaners
  • The Dust Class L vacuum cleaner is suitable for vacuuming up dry, non-flammable dusts, wood shavings and hazardous dusts with an exposure limit value of > 1 mg/m³. The vacuum cleaner must be equipped with suitable filters corresponding to the hazard classification of the dusts to be vacuumed up.
VC 20M-X
VC 40M-X
 Additionally in the case of M-class vacuum cleaners
  • The Dust Class M vacuum cleaner is suitable for vacuuming up dry, non-flammable dusts, wood shavings and hazardous dusts with an exposure limit value ≧ 0.1 mg/m³. The vacuum cleaner must be equipped with suitable filters corresponding to the hazard classification of the dusts to be vacuumed up.

Description

Product overview

Image alternative
  1. Transport handle (extending)
  2. Lashing loop for Hilti case
  3. Carrying handle
  4. Electric tool power outlet
  5. Display and control panel
  6. Blanking cover for wireless module (optional)
  7. Control switch
  8. Intake fitting (suction hose)
  9. Container latch (2 of)
  10. Supply cord
  11. Securing hook (2 of) with rubber strap
  12. Suction head
  13. Waste material container
  14. Filter cassette with retainer

Intended use

The products described here are industrial vacuum cleaners designed for universal, commercial use. They may be used for wet or dry applications.

Use of the product to clean down persons or animals is not permissible. Underwater use is not permissible.

  • Before beginning work with the product, find out how to operate it correctly and about any hazards associated with the materials you will be working with and how these materials can be disposed of safely.

  • Do not use the product for continuous, stationary operation in automatic or semi-automatic systems.

  • To reduce the risk of injury, use only genuine Hilti accessories and accessory tools.

  • Use an anti-static suction hose in order to avoid electrostatic effects.

  • Do not vacuum up objects or materials that could cause injury by piercing through the dust bag (e.g. pointed or sharp objects).

  • Do not stand on the product (do not use it as a substitute for a ladder).

  • Comply with the accident prevention regulations applicable in your country.

Permissible applications:

With vacuum cleaners it is necessary to ensure an adequate rate of air exchange (L) in the room in situations where the expelled air is returned to the room.

Comply with national regulations!
Permissible applications:
  • Vacuuming up large quantities of dust from work with Hilti diamond grinders, cut-off saws, rotary hammers and core drilling machines using dry-cutting core bits.
  • Vacuuming up mineral drilling slurry from working with Hilti diamond core bits or Hilti diamond saws, and liquids up to a temperature of max. 60 °C (140 °F).
  • Vacuuming up oil and liquid media up to a temperature of max. 60 °C (140 °F).
  • Wet and dry cleaning of wall and floor surfaces.
VC 20M-X
VC 40M-X
 Additionally in the case of M-class vacuum cleaners

  • Collecting dry, non-flammable dusts, liquids, wood shavings and hazardous dusts with an exposure limit value of ≧ 0.1 mg/m³ (dust class M).

  • Machines designed for picking up mineral dust containing quartz must correspond to at least dust class M.

Additionally in the case of M-class vacuum cleaners VC 20L-X
VC 40L-X
 Additionally in the case of L-class vacuum cleaners

  • Vacuuming up dry, non-flammable dusts, liquids, wood shavings and hazardous dusts with an exposure limit value of > 1 mg/m³ (dust class L).

Additionally in the case of L-class vacuum cleaners

Possible misuse

  • Do not use the vacuum cleaner to vacuum up asbestos.
  • Do not operate the vacuum cleaner when it is laid flat.
  • Do not use the vacuum cleaner to vacuum up substances that present a risk of explosion, glowing, burning or flammable substances or aggressive dusts (e.g. magnesium or aluminum dust) (exception: wood shavings).
  • Do not use the vacuum cleaner to vacuum up flammable liquids (e.g. gasoline, solvents, acids, coolants and lubricants).

Status indicators on the product

Display
 Description
Image alternative Change filter service indicator
When the LED lights up, the filter is clogged.
  1. Check the fill level in the waste material container
  2. Press the Manual filter cleaning operating button.
  3. Check the filter; replace it if necessary.
Image alternative Fill level monitoring
When the LED lights up, automatic cut-out in wet operating mode is active.
Empty the container and clean the sensors.
Image alternative Power indicator
The LED array is an indicator for current filter status. When suction power is at maximum, all three 3 LEDs light up.

Operating buttons on the product

Operating button
 Description
Image alternative Manual filter cleaning
Press this button to perform manual cleaning of the filter.
Image alternative Automatic filter cleaning
When the LED lights up, automatic filter cleaning is active.
Deactivate automatic filter cleaning by pressing the button. The LED goes out.
Image alternative Setting hose diameter (only for M-class appliances)
Press the button to set the diameter of the hose currently in use.
The setting depends on the tool that you connect and the diameter of its suction hose adapter and has to be changed as necessary.

Items supplied

Wet/dry vacuum cleaner including filter element, suction hose complete with rotatable connector (at the vacuum cleaner end) and connector for accessories, PE dust bag (plastic), operating instructions
Other system products approved for use with this product can be found at your local Hilti Store or at: www.hilti.group

Acoustic warning

VC 20M-X
VC 40M-X
M-class vacuum cleaners have an acoustic warning signal. The acoustic warning is emitted for safety reasons when the air speed in the hose drops below 20 m/s.
In order to ensure that the acoustic warning is emitted correctly, the hose diameter setting must be set to the diameter of the suction hose in use.

Filter cleaning

The filter cleaning system functions only when a suction hose is connected.
The vacuum cleaner has manual and automatic filter cleaning that removes most of the dust adhering to the filter element.
Automatic filter cleaning can be switched off by pressing the "Automatic filter cleaning" button and switched back on by pressing the button again.
Status
 Meaning
LED lights.
 The filter cleaning system is active.
LED doesn’t light.
 The filter cleaning system is not active.
The filter cleaning system is activated automatically each time the vacuum cleaner is switched on.
The filter element is cleaned automatically by a blast of air (a pulsating noise is heard).
In order to maintain continuously high suction power, in system applications (especially grinding and sanding, cutting and slitting) or when collecting large quantities of dust, automatic filter cleaning must be activated.
Independently of automatic filter cleaning, you can clean the filter at any time by pressing the "Manual filter cleaning" button.
Power cleaning: To achieve maximum power for filter cleaning, press the "Manual filter cleaning" button while at the same time keeping the end of the hose closed.

Instructions for use

VC 20M-X
VC 40M-X
Always use a dust bag when working with the M-class vacuum cleaner.
Class M for vacuuming up dust types with an exposure limit value of ≥ 0.1 mg/m3.
Accessories and types of use
Material number
 Accessories
 Type of use
2261451
 Dust bag, plastic, PE VC 20, VC 150-6
 Working with mineral materials, wet and dry
2262095
 Dust bag, plastic, PE VC 40, VC 150-10
 Working with mineral materials, wet and dry
2261258
 Dust bag, Premium, VC 20, VC 150-6
 Working with wood and working with mineral materials (concrete), dry
2262130
 Dust bag, Premium, VC 40, VC 150-10
 Working with wood and working with mineral materials (concrete), dry
2261453
 PTFE VC 20⁄40⁄150 filter
 Universal use, wet and dry
2261257
 VC 20⁄40⁄150 universal filter
 Universal use, wet and dry
2278640
 DRY VC 20⁄40⁄150 universal filter
 Dry
2261452
 HEPA VC 20⁄40⁄150 filter
 Wet and dry
203867
 36x4,65M AS suction hose
 Wet and dry

Technical data

Product properties

If the appliance is powered by a generator or transformer, the generator or transformer’s power output must be at least twice the rated input power shown on the rating plate of the appliance. The operating voltage of the transformer or generator must always be within +5 % and -15 % of the rated voltage of the product.

VC 20-X
 VC 40-X
Weight
 11 kg
 14.4 kg
Dimensions (L x W x H)
 530 mm x 290 mm x 415 mm
 560 mm x 365 mm x 590 mm
Max. additional load
 25 kg
 25 kg
Container capacity
 15 ℓ
 30 ℓ
Effective dust capacity
 15 kg
 34 kg
Effective water capacity
 9 ℓ
 22.8 ℓ
Air temperature
 −10 ℃ …40 ℃
 −10 ℃ …40 ℃
Automatic filter cleaning
 sensor-controlled
 sensor-controlled
AC frequency
 50 Hz …60 Hz
 50 Hz …60 Hz
Protection class
 I
 I
Protection class
 IP X4
 IP X4

Rated voltage


 100 V
 110 V
 110 V (GB 16 A)
 110 V (GB 32 A)
Rated power input
 1,200 W
 1,100 W
 1,100 W
 1,100 W
Power rating of built-in electric tool power outlet on the appliance
 ·/·
 ·/·
 650 W
 1,600 W
Mains connection (type)
 CNS HVCTF 300 3x2 mm2
 CNS HVCTF 300 3x2 mm2
 H07 RNF 3G 1.5 mm2
 HARSJT 3x12 (2.5) AWG

220 - 240 V
 220 - 240 V (CH)
 220 - 240 V (GB)
 240 V (NZ)
Rated power input
 1,200 W
 1,200 W
 1,200 W
 1,200 W
Power rating of built-in electric tool power outlet on the appliance
 2,400 W
 1,100 W
 1,800 W
 1,200 W
Mains connection (type)
 H07 RNF 3G 1.5 mm2
 H07 RNF 3G 1.5 mm2
 H07 RNF 3G 1.5 mm2
 H07 RNF 3G 1.5 mm2

Maximum volumetric flow rate and maximum vacuum


 100 V
 110 V
 220 - 240 V
 220 - 240 V (CH)
 240 V (NZ)
Max. volume flow rate (turbine)
 71 ℓ/s
 71 ℓ/s
 74 ℓ/s
 74 ℓ/s
 74 ℓ/s
Max. volume flow rate at end of hose
 177.1 m³/h (49.2 ℓ/s)
 177.1 m³/h (49.2 ℓ/s)
 183 m³/h (50.6 ℓ/s)
 183 m³/h (50.6 ℓ/s)
 183 m³/h (50.6 ℓ/s)
Max. vacuum
 22.3 kPa
 22.3 kPa
 24.25 kPa
 24.25 kPa
 24.25 kPa

Noise and vibration information (measured in accordance with EN 60335)

The following information applies to all VC 20 and VC 40 industrial vacuum cleaners.
Emission sound pressure level (LpA)
 69 dB(A)
Uncertainty for the sound pressure level (KpA)
 2.5 dB(A)
Vibration emission value
 < 2.5 m/s²

Use of extension cords

WARNING
A damaged supply cord presents a hazard! Do not touch the supply cord or extension cord if damaged while working. Disconnect the supply cord plug from the power outlet.
  • Check the appliance’s supply cord at regular intervals and have it replaced by a qualified specialist if found to be damaged.
  • Use only extension cords of a type approved for the application and with conductors of adequate cross-section. Otherwise the performance of the appliance may be affected and the cord may overheat.
  • Regularly check the extension cord for damage.
  • Replace damaged extension cords.
  • When working outdoors, use only extension cords that are approved and correspondingly marked for this application.

Before use

DANGER
Electrical hazards. Fatal or serious injury may result if the vacuum cleaner is not correctly connected to the electric supply.
  • Connect the vacuum cleaner only to a properly earthed/grounded power source.
CAUTION
Risk of injury presented by the appliance running away out of control. The vacuum cleaner may run away out of control if the wheel brakes are not engaged.
  • Engage the wheel brakes so that the vacuum cleaner stands securely.

Operating the appliance for the first time

Select the dust bag that is best suited to the material to be collected (mineral, wood) and the nature of the application (dry/wet). → See the section headed “Instructions for use”
  1. Open the two catches.
  2. Lift the suction head off the waste material container.
  3. Remove the accessories from the waste material container and packaging.
  4. Insert a dust bag in accordance with the instructions.
  5. Fit the suction head on to the waste material container and close the two catches.
  6. Check to ensure that the suction head is fitted correctly and secured.
  7. Connect the suction hose.

Inserting a premium dust bag

Sharp pointed objects could pierce through the dust bag.
Check that no objects have pierced through the dust bag.
Image alternative
  1. Disconnect the supply cord plug from the power outlet.
  2. Open the 2 catches.
  3. Lift the suction head off the waste material container.
  4. Insert the premium dust bag into the waste material container.
  5. Make sure that the adapter engages correctly and that the dust bag does not project past the edge of the waste material container.
  6. Position the suction head on top of the waste material container.
  7. Close the 2 catches.
  8. Check to ensure that the suction head is fitted correctly and secured.
  9. Connect the suction hose.

Changing dust bag (plastic)

Image alternative
  1. Disconnect the supply cord plug from the power outlet.
  2. Open the 2 catches.
  3. Lift the suction head off the waste material container.
  4. If applicable, remove the full plastic dust bag.
  5. Insert a new dust bag (plastic) into the waste material container and fold the dust bag down over the edge of the waste material container all round.
    • The holes in the dust bag must be in the inside of the waste material container.
    • Use the black line to position the dust bag correctly relative to the edge of the waste material container.
  6. Position the suction head on top of the waste material container.
  7. Close the 2 catches.
  8. Check to ensure that the suction head is fitted correctly and secured.
  9. Connect the suction hose.

Operation

WARNING
Risk of injury. Damage to the filter system may allow harmful dust (health hazard) to escape.
  • In an emergency (e.g. filter ruptured), switch the vacuum cleaner off, unplug the supply cord from the power outlet and have the vacuum cleaner checked by a trained and qualified person before further use.
CAUTION
Risk of injury presented by the appliance running away out of control. The vacuum cleaner may run away out of control if the wheel brakes are not engaged.
  • Engage the wheel brakes so that the vacuum cleaner stands securely.

Setting the hose diameter

  1. For vacuuming up dry, non-flammable dust which has an exposure limit value, or when vacuuming up wood shavings, adjust the hose diameter setting switch to the correct diameter setting for the suction hose used.
  2. Change the setting for the hose diameter, and consequently the threshold for the acoustic warning, by repeatedly pressing the Image alternative button.

Operation without use of the electric tool power outlet

  1. Check that the switch on the appliance is in the “OFF” position off before plugging the supply cord into a power outlet.
  2. Plug the vacuum cleaner’s supply cord into the power outlet.
  3. Turn the control switch to the “ON” position.

Operation with use of the power outlet on the appliance

The power outlet on the appliance is to be used only for powering electric tools directly from the vacuum cleaner.
The operating instructions and safety instructions for the electric tool plugged into the power outlet on the vacuum cleaner must be observed.
  1. Unplug the vacuum cleaner’s supply cord from the power outlet.
  2. Check that the maximum power drawn by the electric tool is below the maximum permissible output of the power outlet on the vacuum cleaner (please refer to the “Technical data” section of the operating instructions and information printed at the power outlet on the appliance).
  3. Check to ensure that the electric tool is switched off before plugging its supply cord into the power outlet.
  4. Plug the electric tool’s supply cord into the power outlet on the vacuum cleaner.
  5. Plug the vacuum cleaner’s supply cord into the power outlet.
  6. Turn the control switch to the “Auto” position.
  7. Switch on the power tool.
    The vacuum cleaner will continue to run for a short time after switching off the electric tool in order to ensure that all dust is removed from the suction hose.

Picking up dry dust

Before picking up dry dust, especially dust from mineral materials, always check to ensure that the correct dust bag is fitted in the container. The material picked up by the vacuum cleaner can then be disposed of cleanly and easily.
CAUTION
Risk of injury by dusts that are hazardous to health! Hazardous material that has been vacuumed up can escape if a filter element is not used.
  • Use the vacuum cleaner only with a filter element installed.
  • Check that the filter element is dry and that the correct type of dust bag is fitted.

Vacuuming up liquids

CAUTION
Risk of injury by dusts that are hazardous to health! Hazardous material that has been vacuumed up can escape if a filter element is not used.
  • Use the vacuum cleaner only with a filter element installed.
  1. Check the container level monitoring system.
  2. If possible, use a separate filter element for wet applications.
    For information about suitable filters, consult the instructions for use for accessories .
  3. After vacuuming up liquids, open the two catches.
  4. Lift the suction head off the waste material container and place it on a level surface so that the filter element can dry.
  5. Empty the waste material container and use a water hose to rinse it out. Use a brush to clean the electrodes and clean the filter element, after allowing it to dry, by wiping it off with your hand.
  6. Allow the waste material container to dry.

After use of the vacuum cleaner

  1. Switch off the electric tool.
  2. Turn the vacuum cleaner control switch to the “OFF” position.
  3. Unplug the vacuum cleaner’s supply cord from the power outlet.
  4. Coil up the supply cord and hang it on the hook.
  5. Empty the container and clean the appliance by wiping it with a damp cloth.
  6. Coil up the suction hose.
  7. Store the vacuum cleaner in a secure, dry place where it is inaccessible to unauthorized users.

Emptying dry dust from the waste material container

  1. Disconnect the supply cord plug from the power outlet.
  2. Open the 2 catches.
  3. Lift the suction head off the waste material container and place it on a level surface.
  4. Empty the waste material container:
    VC 20L-X
    VC 40L-X
    • Hold the waste material container by the grip recesses provided and empty it by tipping out the contents, or remove the dust bag.
    VC 20M-X
    VC 40M-X
    • M-class vacuum cleaners: Remove the dust bag from the waste material container.
    Always use a dust bag when working with the H-class vacuum cleaner.
  5. Then fit the suction head on to the waste material container and close the 2 catches.

Emptying the waste material container when no dust bag is fitted (picking up liquids)

  1. Disconnect the supply cord plug from the power outlet.
  2. Lift the suction head off the waste material container and place it on a level surface.
  3. Open the 2 catches.
  4. Hold the waste material container by the grip recesses provided and empty it by tipping out the contents.
  5. Clean the edge of the waste material container with a cloth.
  6. Fit the suction head on to the waste material container and close the two catches.

Using overcurrent protection circuit-breaker

Only for the Australia and New Zealand markets
The fuse protects the electric tool power outlet from current spikes. If the fuse trips, the overcurrent protection circuit-breaker (white) appears underneath the transparent cover. To keep the fuse from tripping again, rectify the cause of the problem (e.g. disconnect the electrical device from the electric tool power outlet).
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  • To restore the AC supply to the electrical device connected to the power outlet, press the overcurrent protection circuit-breaker.

Care and maintenance

Care of the vacuum cleaner

WARNING
Electric shock hazard! Improper repairs to electrical parts can lead to serious injuries due to electric shock.
  • Electrical parts may be repaired only by trained electrical specialists.
  • Keep the vacuum cleaner, especially its grip surfaces, clean and free from oil and grease. Do not use cleaning agents containing silicone.
  • Never operate the vacuum cleaner when the air vents are blocked! Clean the air vents carefully using a dry brush. Do not allow foreign objects to enter the interior of the vacuum cleaner.
  • Clean the outer surfaces with a slightly damp cloth at regular intervals. Do not use a spray system, pressure jet washer or running water for cleaning as this could negatively affect the electrical safety of the vacuum cleaner.
L- and M-class vacuum cleaners:Handling of the vacuum cleaner for cleaning and maintenance must be such that maintenance personnel and others are not endangered.
  • Use filtered forced ventilation.
  • Wear personal protective equipment.
  • Clean the maintenance area in a way that prevents hazardous substances escaping into the surrounding environment.
  • Before removing the vacuum cleaner from the area contaminated with hazardous substances, use the vacuum cleaner to vacuum its own exterior clean, wipe it clean or place the vacuum cleaner in a sealed bag or container. This will help to avoid distribution of the hazardous dust deposited on it.
  • When maintenance or repairs are carried out, all contaminated parts which cannot be satisfactorily cleaned must be packed in impermeable bags and disposed of in compliance with the applicable disposal regulations.
  • The vacuum cleaner must be subjected to a technical inspection by Hilti Service or a trained person at least once a year to check, for example, for damage to the filter, air leakage of the vacuum cleaner, and to ensure correct operation of the controls.

Filter cleaning

Do not attempt to clean the filter element by knocking it against a hard object and do not use pointed instruments. This will reduce the life of the filter element.
Do not use compressed air to clean the filter element. This may cause tears in the filter material.
The condition of the filter element deteriorates with use.
  • Replace the filter element at least every six months.
  • However, if used intensively, the filter element should be replaced more often.

Changing the filter element

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  1. Disconnect the supply cord plug from the power outlet.
  2. Open the retainer for the filter cassette.
  3. Open the filter cassette.
  4. Carefully remove the filter element, gripping it at the areas provided in the holder.
  5. Clean the sealing surface with a cloth.
  6. Insert the new filter element.
  7. Close the filter cassette by flipping the cover catch forward.
  8. Close the retainer for the filter cassette.
  9. Be sure to remove the dust that escapes from the vacuum cleaner and/or the filter element due to the filter change operation.

Checking the container level monitoring system

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  1. Disconnect the supply cord plug from the power outlet.
  2. Open the two catches.
  3. Lift the vacuum cleaner top section away from the waste material container and place it on a level surface.
  1. Check the cut-off contacts (wire sensors) for dirt accretions and if necessary, brush the contacts clean.
  2. Check the seal at the vacuum cleaner top section and clean it with a cloth if necessary.
  3. Position the vacuum cleaner top section on top of the waste material container.
  4. Close the two catches.
  5. Check to ensure that the vacuum cleaner top section is installed correctly and secured.

Checks after cleaning and maintenance

  1. After cleaning or carrying out maintenance, check that the vacuum cleaner is assembled correctly and that it functions faultlessly.
  2. Test each of the functions.

Transport and storage

Transport

Do not carry the vacuum cleaner when the waste material container is full.
Do not attempt to crane-lift the vacuum cleaner.
  • Remove the power conditioner and all loose accessory tools from the cradle.
  • Empty the vacuum cleaner before the vacuum cleaner is to be carried to another location.
  • After using it to vacuum up liquids, do not tilt the vacuum cleaner and transport the vacuum cleaner in the upright position only.
  • Use the tapered adapter to connect both ends of the hose together conveniently for transport.
VC 20M-X
VC 40M-X
 M-class vacuum cleaners
WARNING
Risk of injury by dusts that are hazardous to health! Hazardous material that has been vacuumed up can escape through the suction hose intake fitting.
  • Close the intake fitting on a class M vacuum cleaner with the cap provided before transportation and when the vacuum cleaner is not in use.

Securing cases

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  1. Make sure that the vacuum cleaner is standing firmly and apply the holding brake. Pull the transport handle all the way out.
  2. Position one or more cases on the vacuum cleaner.
    • It is not permissible for the case/cases to project above the transport handle.
    • Do not exceed the maximum permissible weight for additional load.
  3. Pull the lashing strap out of the holder and over the cases. Extend the lashing strap as necessary.
  4. Engage the hook of the lashing strap on the transport handle and tighten the lashing strap.

Storage

  • Store the vacuum cleaner in a secure, dry place where it is inaccessible to unauthorized users.

Troubleshooting

If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by yourself, please contact Hilti Service.

Malfunction, vacuum cleaner

Malfunction
 Possible cause
 Action to be taken
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Change filter service indicator lights up.
 Filter element is clogged or too old.
No filter element inserted.
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The appliance doesn’t start or switches itself off after a short time.
 The water level cut-out is activated.
  • Clean the sensors and the area around the sensors with a brush.
  • VC 20M-X
    VC 40M-X
Acoustic warning (reduced suction power)
 The dust bag is full.
  • Change the dust bag.
The filter element is clogged with dirt or dust.
  • If the automatic filter cleaning system is deactivated, activate it and allow the vacuum cleaner to run for 30 seconds.
The suction hose or dust hood on the electric tool is blocked.
  • Clean the suction hose and the dust hood.
The hose diameter setting is incorrect.
Dust is blown out of the appliance.
 The filter element is not fitted correctly.
The filter element is damaged.
The appliance switches itself off or on inadvertently or static electricity discharges through the user.
 Electrostatic charge is not conducted away – the appliance is connected to an unearthed/ungrounded power outlet.
  • Connect the appliance to an earthed/grounded power outlet and use an anti-static suction hose.
The motor doesn’t restart.
 The mains circuit breaker has been tripped.
  • Reset the circuit breaker.
  • Find the reason for the overload current if the circuit breaker trips again.
The waste material container is full.
  • Switch the appliance off and empty the waste material container.
The motor overheating protection cut-out has been activated.
  • Switch the appliance off and allow it to cool down for about 5 minutes.
  • If the motor doesn’t start, return the appliance to Hilti Service.
The motor is repeatedly switched off by its thermal cut-out.
  • Clean the air vents carefully using a dry brush.
The motor doesn’t run when set to “AUTO”.
 The appliance is faulty or is not correctly plugged in.
  • Make sure that the supply cord plug is fully plugged in and check that the appliance functions correctly.
The automatic filter element cleaning system doesn’t work.
 No suction hose is connected.
  • Connect the suction hose.

Malfunction, system device

If the vacuum cleaner is used in a wireless system, connected system devices can output the following messages on their displays.
Malfunction
 Possible cause
 Action to be taken
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The Unknown error service indicator lights up.
 The connected system device has received an unknown error code from the vacuum cleaner.
  • Check the vacuum cleaner for malfunctions.
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Change filter service indicator lights up.
 Filter element is clogged or too old.
No filter element inserted.
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Water level cut-out service indicator lights up.
 The water level cut-out is activated.
  • Clean the sensors and the area around the sensors with a brush.
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Reduced suction power service indicator lights up.
 The dust bag is full.
  • Change the dust bag.
The filter element is clogged with dirt or dust.
  • If the automatic filter cleaning system is deactivated, activate it and allow the vacuum cleaner to run for 30 seconds.
The suction hose or dust hood on the electric tool is blocked.
  • Clean the suction hose and the dust hood.
The hose diameter setting is incorrect.

Disposal

Image alternative Most of the materials from which Hilti products are manufactured can be recycled. The materials must be correctly separated before they can be recycled. In many countries, your old tools, machines or appliances can be returned to Hilti for recycling. Ask Hilti Service or your Hilti representative for further information.
In accordance with the European Directive on waste electrical and electronic equipment and its implementation in conformance with national law, electric tools or appliances that have reached the end of their life must be collected separately and returned to an environmentally compatible recycling facility.
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  • Do not dispose of electric appliances together with household waste.
Drilling slurryDisposal of drilling slurry directly into rivers, lakes or the sewerage system without suitable pretreatment presents environmental problems.
  • Ask the local public authorities for information about current regulations.
We recommend the following pretreatment:
  • Collect the drilling slurry (for example, using a wet-type vacuum cleaner).
  • Allow the drilling slurry to settle and dispose of the solid material at a construction waste disposal site (addition of a flocculent may accelerate the settling process).
  • The remaining water (alkaline, pH value greater than 7) must be neutralized by the addition of an acidic neutralizing agent or diluted with a large volume of water before it is allowed to flow into the sewerage system.
Drilling dust
  • Dispose of the drilling dust collected by the vacuum cleaner in accordance with the applicable national regulations.

Manufacturer’s warranty

  • Please contact your local Hilti representative if you have questions about the warranty conditions.