Hilti VC 40 User manual

VC 40 /
VC 20
Bedienungsanleitung de
Operating instructions en
Mode d’emploi fr
Istruzioni d’uso it
Instrukcja obsługi pl
Návod k obsluze cs
Návod na obsluhu sk
Upute za uporabu hr
Navodila za uporabo sl
Пайдалану бойынша басшылықkk
ja
zh
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ORIGINAL OPERATING INSTRUCTIONS
VC20‑U/VC20‑UM/VC40‑U/
VC 40‑UM wet / dry vacuum cleaner
It is essential that the operating in-
structions are read before the appli-
ance is operated for the first time.
Always keep these operating in-
structions together with the appli-
ance.
Ensure that the operating instruc-
tions are with the appliance when it
is given to other persons.
Contents Page
1 General information 20
2 Description 21
3 Accessories 24
4 Technical data 24
5 Safety instructions 26
6Beforeuse 29
7Operation 30
8 Care and maintenance 33
9 Troubleshooting 35
10 Disposal 36
11 Manufacturer’s warranty 37
12 EC declaration of conformity (original) 37
1These numbers refer to the corresponding
illustrations. The illustrations can be found on
the fold-out cover pages. Keep these pages
open while studying the operating instructions.
In these operating instructions, the designation
“the appliance” always refers to the VC 20/40
wet/dry vacuum cleaners. The information
given in these operating instructions applies
to all 4 versions unless explicitly stated that it
refers only to the VC 20‑UM / VC 40‑UM.
Parts, operating controls and indicators 1
@Grip
;Control switch
=Catch
%Waste material container
&Gripping areas
(Hose socket
)Hose socket cap (VC 20‑UM/ VC 40‑UM)
+Power outlet for electric tool
§Supply cord hooks
/Vacuum cleaner top section
:Filter cover
·Locking clip for filter cover
$Hose diameter setting
(VC20‑UM/VC40‑UM)
£Handlebar with cradle
|Cradle catch
1 General information
1.1 Safety notices and their meaning
DANGER
Draws attention to imminent danger that will
lead to serious bodily injury or fatality.
WARNING
Draws attention to a potentially dangerous situ-
ation that could lead to serious personal injury
or fatality.
CAUTION
Draws attention to a potentially dangerous situ-
ation that could lead to slight personal injury or
damage to the equipment or other property.
NOTE
Draws attention to an instruction or other useful
information.
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1.2 Explanation of the pictograms and
other information
Prohibition signs
Transport by
crane is not
permissible.
Warning signs
General
warning
Warning:
caustic
substances
Warning:
electricity
Warning:
explosive
substances
Obligation signs
Wear
protective
clothing
Wear eye
protection.
Wear
protective
gloves.
Wear a hard
hat.
Wear ear
protection.
Wear safety
shoes.
Wear
respiratory
protection!
Symbols
Read the
operating
instructions
before use.
Return waste
material for
recycling.
On the appliance
WARNING: This unit contains hazardous dust.
Emptying and maintenance, including the re-
moval of the dust bag, may only be carried
out by someone who is familiar with the unit
and wearing suitable protective gear. Do not
switch on the unit until the complete filter sys-
tem has been installed and the function of the
volume-flow control has been tested.
Location of identification data on the appli-
ance
The type designation and serial number can be
found on the type identification plate on the
appliance. Make a note of this data in your op-
erating instructions and always refer to it when
making an enquiry to your Hilti representative
or service department.
Type:
Serial no.:
2 Description
2.1 Use of the product as directed
The VC 20/40 is a universal industrial vacuum cleaner with an effective filter cleaning system for
dry dust. It is suitable for wet and dry vacuum cleaning applications.
The appliance is suitable for collecting the slurry created by wet drilling or wet cutting operations
on mineral materials using Hilti diamond coring or Hilti diamond sawing equipment and for
collecting large quantities of dry mineral dust when working with Hilti diamond grinders and
cutters, rotary hammers and dry cutting core bits.
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Theappliancemayalsobeusedtopick up liquid waste material.
It is suitable for picking up drilling slurry from mineral materials.
The appliance (VC 20‑UM, VC 40‑UM) is suitable for picking up dry, non-flammable dusts, liquids,
wood chips or shavings and hazardous dusts with an exposure limit value (or, respectively, with
a MAK or AGW value) of ≧ 0.1 mg/m³ (dust class M). The appliance must be equipped with a
suitable filter corresponding to the hazard classification of the dusts tobepickedup.
Only hazardous substances in accordance with IEC 60335-2-69 (class M) may be picked up with
the VC 20‑UM or VC 40‑UM. Picking up any other hazardous substances is not permissible.
Picking up oil or liquids with a temperature of over 60°C is not permissible.
When picking up dusts with an exposure limit value, steps must be taken to ensure adequate
air exchange in the room if the exhaust air from the appliance is released into the room (please
observe the locally applicable regulations).
The appliance must not be used to pick up materials that present a risk of explosion, glowing
or burning materials, flammable materials (exception: wood chips or shavings), aggressive dusts
(e.g. magnesium or aluminium dust, etc.) or aggressive liquids (e.g. gasoline, solvents, acids,
coolants or lubricants, etc.).
Do not operate the appliance when laid on its side (always operate in uprightposition).
Fully loaded with the material picked up, the total weight of the VC 20 must not exceed 37 kg.
Fully loaded with the material picked up, the total weight of the VC 40 must not exceed 55 kg.
Do not stand on the appliance (do not use as a substitute for a ladder).
Do not use the appliance for continuous, stationary operation in automatic or semi-automatic
systems.
The operating personnel must be instructed on how to use the appliance prior to beginning work,
they must be informed of any hazards associated with the materials to be pickedupandthey
must be familiar with the correct procedures for safe disposal of these materials.
Underwater use is not permissible.
Use of the appliance to clean down persons or animals is not permissible.
Use an antistatic suction hose in order to avoid electrostatic effects.
This appliance is suitable for commercial use, e.g. in hotels, schools, hospitals, factories, shops,
offices and by rental companies.
Working on materials hazardous to the health (e.g. asbestos) is not permissible.
The working environment may be as follows: construction site, workshop, renovation, conversion
or new construction.
Observe the information printed in the operating instructions concerningoperation,careand
maintenance.
To avoid the risk of injury, use only genuine Hilti tools and accessories.
The appliance and its ancillary equipment may present hazards when used incorrectly by untrained
personnel or when used not as directed.
Modification of the appliance or tampering with its parts is not permissible.
2.2 Hose diameter settings (VC 20‑UM/ VC 40‑UM)
Hose diameter Hose diameter setting
∅21mm ∅21
∅27mm ∅27
∅36mm ∅36
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2.3 The items supplied as standard include:
1 Appliance with filter element
1 Suction hose complete with hose
connector, hose sleeve and tapered
adapter
1 PE VC 20 plastic dust bag
1 Paper dust bag VC 40
1 Operating instructions
2.4 Using extension cords
Use only extension cords of a type approved for the application and with conductors of adequate
gauge. The appliance may otherwise loseperformanceandtheextensioncord may overheat.
Check the extension cord for damage at regular intervals. Replace damaged extension cords.
Recommended minimum conductor cross section and max. cord length for operating the
VC 20/40 in conjunction with an electric tool plugged into the built-in power outlet:
Conductor cross section 1.5 mm² 2.5 mm² 3.5 mm²
Mains voltage 110V Not recommended 25 m Not recommended
Mains voltage 220-240 V 30 m 50 m Not recommended
Recommended minimum cross section and max. cord length for the VC 20/40:
Conductor cross section 1.5 mm² 2.5 mm² 3.5 mm²
Mains voltage 100V Not recommended Not recommended 75 m
Mains voltage 110V 30 m 50 m Not recommended
Use only extension cords equipped with an earth conductor.
Do not use extension cords with 1.25 mm² or 2 mm² conductor cross sections.
2.5 Using extension cords outdoors
When working outdoors, use only extension cords that are approved and correspondingly marked
for this application.
2.6 Using a generator or transformer
This appliance may be powered by a generator or transformer when the following conditions
are fulfilled: The unit must provide a power output in watts of at least twice the maximum value
printed on the type identification plate on the power tool or appliance. Theoperatingvoltage
must remain within +5% and -15% of the rated voltage at all times, frequency must be in the 50
– 60 Hz range and never above 65 Hz, and the unit must be equipped with automatic voltage
regulation and starting boost.
Never operate other power tools or appliances from the generator or transformer at the same
time. Switching other power tools or appliances on and off may cause undervoltage and / or
overvoltage peaks, resulting in damage to the power tool or appliance.
2.7 Use of accessories
Accessories Type of use
PE VC 20/40 plastic dust bag Working with mineral materials, wet
and dry
VC 20/ VC 40 paper dust bag Working with wood
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Accessories Type of use
VC 20/40 filter fleece Dry
VC 20/40 filter element Mainly dry
PES VC 20/40 filter element Wet and dry
Suction hose, 27 X 3.5m AS Specially for dry use
Suction hose, 36 mm dia., static type Wet and dry
Suction hose, 36 x 5m AS Specially for dry use
With the VC 20‑UM and the VC 40‑UM, use of one of the following accessories is mandatory:
plastic dust bag, paper dust bag or filter fleece.
3 Accessories
Spare parts, tools and accessories are available through Hilti sales channels.
Designation Item number, description
PE VC 20 plastic dust bag 203854
PE VC 40 plastic dust bag 203852
Paper dust bag VC 20 203858
Paper dust bag VC 40 203856
VC 20 filter fleece 203859
VC 40 filter fleece 203857
VC 20/40 filter element 203862
PES VC 20/40 filter element 203863
Suction hose, 27 mm dia., length 3.5 m 203865
Suction hose, 36 mm dia., static type 203866
Suction hose, 36 mm dia., length 5 m 203867
Accessory set 203868, 1 bend, 2 extension tubes, 1 floor
nozzle with lamellar lips and 1 set of brushes
Hose connector
Tapered adapter 203878
Handlebar (VC 40) 203870
Handlebar for DPC 20 (only VC 40) 203871
4 Technical data
Right of technical changes reserved.
Rated
voltage 100 V 110 V 110 V 220… 240 V 220...240 V/
CH
220...240 V/
GB
Rated
power in-
put
1,200 W 1,100 W 1,100 W 1,200 W 1,200 W 1,200 W
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Rated
voltage 100 V 110 V 110 V 220… 240 V 220...240 V/
CH
220...240 V/
GB
Maximum
load on
built-in
power out-
let for elec-
tric tools
(if fitted)
1,600 W 2,400 W 1,100 W 1,800 W
Mains con-
nection
(type)
VCTF
3x2.0
mm²
A07 QQ‑F
3/12AWG
H07 BQ‑F
3G 1.5
mm²
H07 RN‑F
3G 1.5
mm²
H07 RN‑F
3G 1.5
mm²
H07 RN‑F
3G 1.5
mm²
Rated power input 1,100 W 1,200 W
Max. air flow rate,
VC 20‑U / VC 40‑U
61 l/s 61 l/s
Max. air flow rate,
VC 20‑UM / VC 40‑UM
135 m³/h 145 m³/h
Max. vacuum,
C20‑U/VC40‑U
23 kPa 23 kPa
Max. vacuum,
C 20‑UM / VC 40‑UM
18.5 kPa 22 kPa
Appliance VC 20‑U/ VC 20‑UM VC 40‑U/ VC 40‑UM
Mains frequency 50…60 Hz 50…60 Hz
Weight in accordance with
EPTA procedure 01/2003
12.9 kg/ 13.0 kg 14.6 kg/ 14.7 kg
Dimensions (L x W x H) 505 mm x 380 mm x 500 mm 505 mm x 380 mm x 610 mm
Supply cord 7.5 m 7.5 m
Container capacity 21 l 36 l
Effective dust capacity 23 kg 40 kg
Effective water capacity 13.5 l 25 l
Suction hose diameter (rotary
connector at nozzle end;
connector at vacuum cleaner
end)
Length 5 m: 36 mm
Length 3.5 m: 27 mm
Length 5 m: 36 mm
Length 3.5 m: 27 mm
Air temperature -10…+40°C -10…+40°C
Automatic filter cleaning ap-
prox. every
15 s 15 s
Information about the appliance and its applications
Protection class Protection class I
Protection class IP X4 protection against sprayed water
Noise information (measured in accordance with EN 60335-2-69):
Typical A-weighted emission sound pressure
level
71 dB (A)
Uncertainty for the given sound level 2.5 dB (A)
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5 Safety instructions
5.1 Basic information concerning safety
a) In addition to the information relevant to
safety given in each of the sections of
these operating instructions, the follow-
ing points must be strictly observed at all
times.
b) Read all instructions! Failure to follow
all instructions listed below may result in
electric shock, fire and/or serious injury.
c) Before use of the appliance together with
a power tool, the operating instructions
for the power tool must be read carefully
and all safety instructions observed.
5.2 Requirements to be met by users
a) Stay alert, watch what you are doing and
use common sense when operating the
appliance. Do not use the appliance while
tired or under the influence of drugs, al-
cohol or medication. A moment of inatten-
tion while operating appliances may result
in serious personal injury.
b) Dress properly. Do not wear loose cloth-
ing or jewellery. Keep your hair, cloth-
ing and gloves away from moving parts.
Loose clothes, jewellery or long hair can be
caught in moving parts.
c) Use safety equipment. Always wear eye
protection. Depending on the purpose for
which the electric appliance is to be used,
wearing safety equipment such as a dust
mask, non-skid safety shoes, hard hat, or
hearing protection will reduce the risk of
injury.
d) If devices are provided for the connec-
tion of dust extraction and collection fa-
cilities, ensure these are connected and
properly used. Use of dust collection can
reduce dust-related hazards.
e) The machine is intended for professional
use.
f) The machine may be operated, serviced
and repaired only by authorized, trained
personnel. This personnel must be in-
formed of any special hazards that may
be encountered.
g) Use extra care when cleaning on stairs.
h) Do not put any object into openings. Do
not use with any opening blocked; keep
free of dust, lint, hair, and anything that
may reduce air flow.
5.3 Proper organization of the work area
a) Ensure that the workplace is well lit.
b) Ensure that the workplace is well vent-
ilated. Exposure to dust at a poorly ventil-
ated workplace may result in damage to the
health.
c) Keeptheworkareatidy.Anyobjects
which may cause injury should be re-
moved from the area. Untidiness at the
workplace can lead to accidents.
d) Store appliances out of reach of children
when not n use. Do not allow persons
unfamiliar with the appliance or these in-
structions to operate it. Appliances are
dangerous when used by inexperienced
persons or persons with limited physical,
sensory or mental abilities.
e) Keep children and other persons away
fromtheareawhiletheapplianceisin
use. Distractions can cause you to lose
control.
f) 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.
g) Do not allow other persons to touch the
appliance or the extension cord.
h) Avoid unusual body positions. Make sure
you work from a safe stance and stay in
balance at all times.
i) Wear non-skid shoes.
j) Always lead the supply cord, the exten-
sion cord and the suction hose away to
the rear when working. This will help to
prevent tripping while working.
k) After finishing the work, always tidy up
and stow the supply cord, extension cord
and suction hose away securely. This will
reduce the risk of tripping and falling.
l) Do not transport the appliance by crane.
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m) Check to ensure that the appliance is
switched off before plugging the supply
cord into a power outlet.
5.4 General safety rules
a) Use the right appliance for the job. Do
not use the appliance for purposes for
whichitwasnotintended.Useitonlyas
directed and when in faultless condition.
b) Never leave the appliance unattended.
c) Take the influences of the surrounding
area into account. Do not use the ap-
pliance where there is a risk of fire of
explosion.
d) Protect the appliance from frost.
e) CAUTION - Store appliances in a secure
place when not in use.When not in use, ap-
pliances must be stored in a dry, high place
or locked away out of reach of children.
f) With vacuum cleaners of the class M,
take care to ensure that the hose socket
cap is fitted when the appliance is trans-
ported or not in use.
g) 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.
h) Switchtheapplianceoffbeforetrans-
porting it.
i) 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
correctly without sticking and that no
parts are damaged. All parts must be
fitted correctly and fulfill all conditions
necessary for correct operation of
the appliance. Damaged guards,
safety devices and other parts must
be repaired or replaced properly at
an authorized service center unless
otherwise indicated in the operating
instructions.
j) Check that the filter is seated correctly.
Check to ensure that the filter is undam-
aged.
k) Have your appliance serviced by a qual-
ified repair person using only identical
replacement parts. This will ensure that
the safety of the appliance is maintained.
l) Disconnect the plug from the power
source before making any adjustments,
changing accessories, or storing
the appliance. Such preventive safety
measures reduce the risk of starting the
appliance accidentally.
m) Use the appliance and its accessories
etc. in accordance with these instruc-
tions and in the manner intended for the
particular type of appliance, taking into
account the working conditions and the
work to be performed. Use of appliances
for applications different from those inten-
ded could result in a hazardous situation.
n) Do not pull the wheels of the vacuum
cleaner over the supply cord.
o) The water level limiting device must be
cleaned regularly with a brush in accord-
ance with instructions and checked for
signs of damage.
5.5 Mechanical
a) Follow the instructions concerning care
and maintenance.
b) Maintain the machine carefully. Check
for misalignment or binding of moving
parts, breakage of parts and any other
condition that may affect the machine’s
operation. If damaged, have the machine
repaired before use. Poor maintenance of
electric appliances is the cause of many
accidents.
5.6 Electrical
a) The appliance’s supply cord plug must
match the outlet. Never modify the plug
in any way. Do not use any adapter plugs
with earthed (grounded) appliances. Un-
modified plugs and matching outlets will
reduce risk of electric shock.
b) Insert the plug in a suitable
earthed/grounded power outlet which
has been correctly and safely installed
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and is in compliance with local
regulations.
c) If you are in doubt about the effective-
ness of the power outlet’s earth/ground
connection, have it checked by a quali-
fied specialist.
d) Avoid body contact with earthed or
grounded surfaces, such as pipes,
radiators, ranges and refrigerators.
There is an increased risk of electric shock
if your body is earthed or grounded.
e) Do not expose appliances to rain or wet
conditions. Water entering an appliance
will increase the risk of electric shock.
f) Check the appliance’s supply cord at
regular intervals and have it replaced at
a Hilti service center if damage is found.
Check extension cords at regular inter-
vals and replace them if found to be dam-
aged.
g) Check the condition of the appliance and
its accessories. Do not operate the ap-
pliance and its accessories if damage is
found, if the appliance is incomplete or
if its controls cannot be operated fault-
lessly.
h) 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 present a risk of
electric shock.
i) The electric supply cord may be replaced
only with a cord of the type specified in
the operating instructions.
j) Damaged or faulty switches must be re-
placed at a Hilti service center. Do not
use the appliance if it cannot be switched
on and/or off correctly.
k) Have the appliance repaired only by a
trained electrical specialist (Hilti service
center) using genuine Hilti spare parts.
Failure to observe this point may result
in risk of accident to the user.
l) 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.
m) When operating an electric appliance
outdoors, use only extension cords of a
type suitable for outdoor use. Use of a
cord suitable for outdoor use reduces the
risk of electric shock.
n) In case of an interruption in the elec-
tric supply: Switch the appliance off and
unplug the supply cord.
o) Avoid using extension cords with mul-
tiple power outlets and the simultaneous
use of several appliances connected to
one extension cord.
p) Use the electric tool power outlet only for
the purposes described in the operating
instructions.
q) Never spray the top section of the va-
cuum cleaner with water: this presents
an electrical hazard and may damage
the appliance.
r) Connectors on mains power cables,
extension cords or supply cords must
provide protection from sprayed water.
s) Grip the plug when unplugging the supply
cord (do not pull or tug at the supply
cord).
t) Never pull the vacuum cleaner by the
supply cord to a new working position.
u) Never operate the appliance when it is
dirty or wet. Dust (especially dust from
conductive materials) or dampness ad-
hering to the surface of the appliance
may, under unfavorable conditions, lead
to electric shock. Dirty or dusty appli-
ances should thus be checked at a Hilti
service center at regular intervals, espe-
cially if used frequently for working on
conductive materials.
v) Check to ensure that the supply cord
does not lie in a puddle of water.
w) Do not use the power outlet or accessor-
ies when the hands are wet.
5.7 Material picked up
a) Do not use the appliance to pick up flam-
mable or explosive dusts (magnesium
or aluminium dust etc.) or dusts which
present a health hazard.
b) A vacuum cleaner of the dust class M is
suitable for picking up dry, non-flammable
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dusts, wood chips or shavings and hazard-
oussubstanceswithanexposure limit value
of ≧0.1mg/m³. The vacuum cleaner must
be equipped with a filter suitable for the
hazard classification of the dusts to be
picked up.
c) Donotusetheappliancetopickup
flammable, explosive or aggressive li-
quids (coolants and lubricants, gasoline,
solvents, acids (pH<5), alkalis (pH>12.5)
etc.)
d) Switch the appliance off immediately if
foam or liquids escape from it.
e) Avoid contact with alkaline or acidic
liquids. If contact accidentally occurs,
flush 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.
f) Wear protective gloves when using the
vacuum cleaner to pick up hot materials
with a max. temperature of 60°C.
g) Do not pick up objects or materials that
could cause injury by piercing through
the dust bag (e.g. pointed or sharp ob-
jects).
5.8 Thermal
Do not use the vacuum cleaner to pick up
hot materials with a temperature of over
60°C (glowing cigarettes, hot ash, etc.).
5.9 Personal protective equipment
a) The user and any other persons in the
vicinity must wear suitable eye protec-
tion, a hard hat, ear protection, protect-
ive gloves, safety footwear and respirat-
ory protection while the appliance is in
use or during servicing.
b) When working with mineral drilling slurry,
wear protective clothing and avoid skin
contact with the slurry (pH>9: caustic).
6Beforeuse
CAUTION
The mains voltage must comply with the
specification given on the type identification
plate. Ensure that the appliance is discon-
nected from the electric supply.
DANGER
Connect the appliance only to properly
earthed/grounded power sources.
CAUTION
Always check to ensure that the vacuum
cleaner is standing securely. Engage the
castor brakes.
CAUTION
When fitting the top section of the vacuum
cleaner, take care to avoid pinching your
fingers or damaging the supply cord.
6.1 Use of extension cords and
generators or transformers
See section “Description / use of extension
cords”.
6.2Operatingtheapplianceforthefirst
time 2
1. Open the two catches.
2. Lift the vacuum cleaner top section away
from the waste material container.
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3. Remove the accessories and packaging
from the waste material container.
NOTE Use the class M version for picking
up dusts with an exposure limit value of ≧
0.1 mg/m³. Fit a filter fleece or plastic dust
bag for mineral dust or a paper dust bag
for wood chips or shavings in the container
in accordance with the instructions.
NOTE When used to pick up harmless
dusts: Fit a plastic dust bag in the container
in accordance with the instructions (see
printed instructions).
4. Fit the vacuum cleaner top section onto
the waste material container.
5. Close the two catches.
6. Check to ensure that the vacuum cleaner
topsectionisfittedcorrectlyandsecured.
7. Connect the suction hose to the appliance.
6.2.1 Fitting a paper dust bag for picking
up wood chips or shavings 3
1. Open the two catches.
2. Lift the vacuum cleaner top section away
from the waste material container.
3. Place the new paper dust bag in the waste
material container.
4. Fit the vacuum cleaner top section onto
the waste material container.
5. Close the two catches.
6. Check to ensure that the vacuum cleaner
topsectionisfittedcorrectlyandsecured.
7. Connect the suction hose to the appliance.
6.3 Power conditioner
CAUTION
When placing the power conditioner in the
cradle check that the power outlet faces
upwards and the spring catch engages.
CAUTION
To avoid injury, remove the power condi-
tioner and any loose accessories from their
attachment points before emptying the con-
tainer and before transporting the vacuum
cleaner.
6.4 Transport
DANGER
With vacuum cleaners of the class M, take
care to ensure that the hose socket cap is
fitted when the appliance is transported or
not in use.
DANGER
The appliance may be moved or transported
only when the motor has come to a complete
stop.
Do not carry the appliance when it is full of
waste material.
Empty the appliance before carrying it to an-
other location.
Do not tip the appliance or lay it on its side for
transport after using it to collect water.
The tapered adapter can be used to connect
both ends of the hose together for transport.
7 Operation
WARNING
For vacuum cleaners of the class M, please
note: Vacuum off the outer surfaces of the
appliance, wipe it clean or seal it in a suit-
able container or material before removing
it from an area contaminated with hazard-
ous substances. All parts of the appliance
must be regarded as being contaminated
when they are removed from the hazardous
area and suitable measures must be taken
to avoid spreading dust.
WARNING
In an emergency (e.g. burst filter), switch the
appliance off, disconnect it from the electric
supply and have it checked by a trained
specialist before further use.
CAUTION
For vacuum cleaners of the class M, please
note: CAUTION: This appliance contains
harmful dust. The vacuum cleaner may be
emptied (including disposal of the dust
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container) or serviced only by trained
persons wearing the appropriate protective
equipment. Do not operate the appliance if
the filter system is incomplete.
CAUTION
Always check to ensure that the vacuum
cleaner is standing securely. Engage the
castor brakes.
7.1 Hose diameter setting
(VC20‑UM/VC40‑UM)
When picking up dry, non flammable dust
which has an exposure limit value, or when
picking up wood chips or shavings, adjust the
hose diameter setting switch to the correct
diameter setting for the suction hose used.
See section: 2.2 Hose diameter settings
(VC20‑UM/VC40‑UM)
7.2 Operation without use of the electric
tool power outlet
NOTE
Check that the appliance is switched off before
plugging it into the power outlet (control switch
in the “OFF” position).
1. Plug the supply cord into the power outlet.
2. Turn the control switch to the “ON” posi-
tion.
7.3 Operation with use of the electric tool
power outlet
DANGER
The power outlet is to be used only to connect
electric tools directly to the vacuum cleaner.
NOTE
Check that the electric tool is switched off
before plugging it into the power outlet on the
vacuum cleaner.
NOTE
The operating instructions and safety instruc-
tions for the electric tool plugged into the power
outlet on the vacuum cleaner must be ob-
served.
NOTE
Check to ensure that the maximum power
drawn by the electric tool is below the max-
imum permissible output of the power outlet on
the vacuum cleaner (please refer to the “Tech-
nical data” section of the operating instructions
and information printed on the power outlet).
1. Disconnect the power tool supply cord
plug from the power outlet.
2. Plugtheelectrictool’ssupplycordintothe
power outlet on the vacuum cleaner.
3. Plug the vacuum cleaner’s supply cord into
the power outlet.
4. Turn the control switch to the “AUTO” po-
sition.
5. Switch on the electric tool.
NOTE 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.
7.4 Picking up dry dust
NOTE
Before using the appliance to pick up dry dust,
especially dust from mineral materials, always
check to ensure that the correct dust bag (Hilti
accessory) is fitted in the container. The ma-
terial collected can then be disposed of cleanly
and easily.
CAUTION
The material collected must be disposed of
in accordance with the applicable regula-
tions.
CAUTION
Never use the appliance without a filter ele-
ment.
CAUTION
When fitting the top section of the vacuum
cleaner, take care to avoid pinching your
fingers or damaging the supply cord.
Check to ensure that the filter element is dry.
A damp filter element will quickly become
clogged when dry dust is picked up with the
appliance. Accordingly, before being used for
picking up dry dust, the filter element should
be rinsed and allowed to dry or replaced with
another dry filter element.
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7.4.1 Changing the paper dust bag / filter
fleece
DANGER
Check that the bag has not been pierced
through by objects which may cause injury.
CAUTION
The material collected must be disposed of
in accordance with the applicable regula-
tions.
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.
4. Carefully remove the paper dust bag col-
lar from the adapter and remove the filter
fleece.
5. Close the slider at the dust bag collar (place
the cover over the filter fleece).
6. Clean the waste material container with a
cloth.
7. Fit a new dust bag / filter fleece in the waste
material container.
8. Fit the vacuum cleaner top section onto
the waste material container.
9. Close the two catches.
7.4.2 Changing the plastic dust bag 4
CAUTION
The material collected must be disposed of
in accordance with the applicable regula-
tions.
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.
4. Use a cable tie to close the plastic dust
bag below the punched holes.
5. Remove the plastic dust bag.
6. Clean the waste material container with a
cloth.
7. Fit a new plastic dust bag (see instruc-
tions printed on it) in the waste material
container.
8. Fit the vacuum cleaner top section onto
the waste material container.
9. Close the two catches.
7.5 Picking up liquids
CAUTION
Never use the appliance without a filter ele-
ment.
7.5.1 Before picking up liquids
1. Remove the dust bag from the waste ma-
terial container.
2. Check to ensure that the electrodes of the
level monitoring system are clean. Clean
them with a brush if necessary.
7.5.2 When picking up liquids
If possible, use a separate filter element for wet
applications.
NOTE
If possible, use a Hilti PES filter element.
If foaming occurs, switch the appliance off
immediately and empty the container.
The appliance switches itself off automatically
when the liquid in the container reaches the
maximum level.
7.5.3 After picking up liquids 5
1. Open the two catches.
2. Lift the vacuum cleaner top section away
from the waste material container.
3. Empty the container and clean it out by
hosing it down with water, clean the elec-
trodes with a brush and clean the filter
element by wiping it with the hand after
first allowing it to dry.
4. Leave the vacuum cleaner top section and
the container standing separately so that
the container can dry.
7.6 Audible signal (VC 20‑UM/ VC 40‑UM)
For safety reasons, an audible warning signal
is emitted when the air speed in the hose
drops below 20 m/s. Please refer to the
“Troubleshooting” section for possible causes
of this problem.
7.7 After finishing work
1. Switch off the electric tool.
2. Turn the control switch to the “OFF” posi-
tion.
3. Disconnect the supply cord plug from the
power outlet.
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4. Coil up the supply cord and hang it on the
hook.
5. Empty the container and clean the appli-
ance by wiping it with a damp cloth.
6. Coil up the suction hose.
7. Store the appliance in a secure, dry place
where it is inaccessible to unauthorized
users.
7.8 Emptying the waste material container
CAUTION
To avoid injury, remove the power condi-
tioner and any loose accessories from their
attachment points before emptying the con-
tainer and before transporting the vacuum
cleaner.
7.8.1 Emptying dry dust from the waste
material container
7.8.1.1 Before emptying the waste
material container, proceed as
follows:
1. Disconnect the supply cord plug from the
power outlet.
2. Lift the vacuum cleaner top section away
from the waste material container and
place it on a level surface.
7.8.1.2 After emptying the waste material
container, proceed as follows:
CAUTION
When fitting the top section of the vacuum
cleaner, take care to avoid pinching your
fingers or damaging the supply cord.
Fit the vacuum cleaner top section onto the
waste material container and close the two
catches.
7.8.2 Emptying the waste material
container when no dust bag is fitted
(collecting liquids)
NOTE
The material collected must be disposed of in
accordance with the applicable regulations.
1. Hold the container by the grip areas
provided and tip it over to empty out its
contents.
2. Clean the edge of the waste material con-
tainer with a damp cloth.
8 Care and maintenance
CAUTION
For vacuum cleaners of the class M, please
note: CAUTION: This appliance contains
harmful dust. The vacuum cleaner may be
emptied (including disposal of the dust
container) or serviced only by trained
persons wearing the appropriate protective
equipment. Do not operate the appliance if
the filter system is incomplete.
8.1 Automatic filter element cleaning
NOTE
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.
NOTE
Do not use compressed air to clean the fil-
ter element. This may cause tears in the filter
material.
NOTE
The condition of the filter will deteriorate with
use. It should be replaced at least every 6
months and more frequently if the appliance is
subject to heavy use.
The appliance is equipped with a filter clean-
ing system which removes most of the dust
adhering to the filter element.
The filter element is cleaned automatically by a
blast of air (a pulsating noise is heard).
NOTE
The filter element cleaning system functions
only when a suction hose is connected.
8.2 Changing the filter element
CAUTION
Never use the appliance without a filter ele-
ment.
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8.2.1 Removing the filter element 6
1. Disconnect the supply cord plug from the
power outlet.
2. Open the filter cover catches.
3. Open the filter cover.
4. Carefully remove the filter element, grip-
ping it at the areas provided in the holder.
8.2.2 Fitting the filter element 7
1. Clean the sealing surface with a cloth.
2. Fit the new filter element.
3. Close the filter cover by pivoting the cover
catch forward.
4. Close the filter cover catches.
8.3 Opening the appliance for checking
1. Engage the castor brakes.
2. Disconnect the supply cord plug from the
power outlet.
3. Open the two catches.
4. Lift the vacuum cleaner top section away
from the waste material container and
place it on a level surface.
8.4 Checking the waste material level
Check the cut-out contacts and clean them
with a brush if necessary (if dirty).
8.5 Closing the appliance
CAUTION
When fitting the top section of the vacuum
cleaner, take care to avoid pinching your
fingers or damaging the supply cord.
1. Check the seal at the vacuum cleaner top
section and also clean this with a cloth.
2. Fit the vacuum cleaner top section onto
the waste material container.
3. Close the two catches.
8.6 Care of the appliance
CAUTION
Disconnect the supply cord plug from the
power outlet.
Never operate the appliance when the ventil-
ation slots are blocked. Clean the ventilation
slots carefully using a dry brush. Clean the out-
side of the appliance at regular intervals with a
cloth. Do not use a spray, high-pressure water-
jet system, steam pressure cleaning equipment
or running water for cleaning. This may negat-
ively affect the electrical safety of the appliance.
Always keep the grip surfaces of the appliance
free from oil and grease. Do not use cleaning
agents which contain silicone.
For vacuum cleaners of the class M, please
note: The appliance must be handled for clean-
ing and maintenance in a way that avoids ex-
posing maintenance personnel and other per-
sons to any hazards. Use filtered forced vent-
ilation. Wear personal protective equipment.
Clean the maintenance area in a way that pre-
vents hazardous substances escaping into the
surrounding environment.
Vacuum off the outer surfaces of the appliance,
wipe it clean or seal it in suitable container
or material before removing it from an area
contaminated with hazardous substances. 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 satisfact-
orily cleaned must be packed in impermeable
bags and disposed of in compliance with the
applicable disposal regulations.
A vacuum cleaner of the class M must be sub-
jected 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, and to ensure correct operation of
controlling devices.
8.7 Maintenance
WARNING
Repairs to the electrical section of the ap-
pliance may be carried out only by trained
electrical specialists.
Check all external parts of the appliance for
damage at regular intervals and check that all
controls operate faultlessly. Do not operate the
appliance if parts are damaged or when the
controls do not function faultlessly. If neces-
sary, the appliance should be repaired by Hilti
Service.
8.8 Checking the appliance after care and
maintenance
After carrying out cleaning and maintenance,
check that the vacuum cleaner has been cor-
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rectly reassembled and that it operates fault-
lessly. Test each of the functions.
9 Troubleshooting
Fault Possible cause Remedy
The audible warning
signal is emitted
(reduced suction power)
(VC20‑UM/VC40‑UM).
The dust bag is full. Change the dust bag.
See section: 7.4.2 Changing
the plastic dust bag 4
See section: 7.4.1 Changing
the paper dust bag / filter
fleece
The filter element is clogged
with dirt or dust.
Change the filter element if ne-
cessary.
See section: 8.2 Changing the
filter element
Blockage in the hose, vacuum
cleaner or power tool dust
hood.
Clean the hose and dust hood.
The hose diameter and hose
diameter setting don’t corres-
pond.
Set the switch to the correct
hose diameter setting.
See section: 7.1 Hose diameter
setting (VC 20‑UM/ VC 40‑UM)
Dust is blown out of the
appliance.
The filter element is not fitted
correctly.
Remove the filter element and
refititcorrectly.
The filter element is damaged. Fit a new filter element.
The filter seal is damaged. Fit a new filter element.
The appliance switches
itself off or on inadvert-
ently or the user receives
electric shocks (static dis-
charge).
Electrostatic charge is not dis-
sipated correctly; the appli-
ance is connected to an un-
earthed/ungrounded power
outlet.
Connect the appliance to an
earthed/grounded power out-
let; use an antistatic hose.
The appliance doesn’t
start or switches itself off
after a short time.
The water level cut-out is activ-
ated.
Clean the probe and the area
around the probe with a brush.
The motor doesn’t restart. The mains circuit breaker has
been tripped.
Reset the circuit breaker. Find
the reason for the overload
current if it trips again.
The container is full. Switch the appliance off.
Empty the container.
See section: 7.8.2 Emptying
the waste material container
when no dust bag is fitted
(collecting liquids)
The motor overheating protec-
tion cut-out has been activ-
ated.
Switch off the appliance and
allow it to cool for 5 min. If the
motor still doesn’t start, con-
tact Hilti Service.
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