Kärcher WOMA HP-DG Bedienungsanleitung Seite 14

2.7 Usage
2.7.1 Work area
DANGER
Contact with high-pressure water jets can cause irreversi-
ble injuries or even death.
 Do not direct high-pressure water jets towards humans,
animals or electrical equipment.
 Never work alone! For safety reasons, a second person
must always be present when using the safety device,
who is able to shut down the high-pressure water jet ma-
chine in the case of an emergency and obtain help if
necessary.
 No persons except the operating personnel may be
present within a 10 m radius of the spray device when
spraying.
 The spray device work area and the general work area
must be fully visible.
 Secure the spray device work area in a clearly visible
manner against unauthorised access while spraying.
Erect warning signs and cordon off the area.
 Depending on the surface characteristics, the ground
can become slippery due to the spray mist or emitted
water. Maintain a solid and safe footing when working
with a water jet.
 Spray mist impairs direct visibility. Take the local condi-
tions into account and watch out for other persons when
working with a water jet.
 The operating personnel must be secured against fall-
ing when spraying on scaffolding.
 The operating personnel must be secured by a retaining
device (e.g. straps, ropes) when spraying in enclosed
spaces (e.g. tanks or autoclaves). Ensure an additional
supply of sufficient fresh air.
 Adhere to the respective safety instructions when using
the spray device in hazard zones (e.g. service stations).
 The spray device may not be operated in explosive at-
mospheres.
2.7.2 General usage information
DANGER
Incorrectly used high-pressure water jets can be danger-
ous and contact with high-pressure water jets can cause ir-
reversible injuries or even death.
 Do not use spray equipment shorter than 750 mm
(measured from trigger to nozzle). A danger of injury ex-
ists when working with short spray lances because your
hand may come into contact with the high-pressure jet.
 Use the device only in the specified correct manner (see
chapter 3 Intended use).
 Check the product and work equipment prior to each
use to make sure it is safe and working correctly (see
chapter 6 Startup). Do not use a damaged spray device.
 Never lock the trigger of the product.
 The impact of the high-pressure water jet can release
particles or larger elements from the surface being
cleaned. These are strongly accelerated and can injure
the operating personnel. Wear the prescribed personal
protective equipment.
 Do not use the high-pressure water jet machine and the
spray device when you are tired, medically impaired or
under the influence of alcohol or medication.
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 Never use liquids containing solvents or undiluted acids
and solvents. This includes e.g. petrol, paint thinner or
heating oil. The spray mist is highly flammable, explo-
sive and poisonous.
 Materials containing asbestos or other substances
harmful to health may not be sprayed.
2.7.3 Temperature
WARNING
Escaping high-pressure water can cause burns or scald-
ing.
 Wear personal protective equipment.
 Do not touch any hot surfaces of the spray device when
using hot water.
 Install a handle for protection (see the WOMA product
range).
 Allow the spray device to cool down after hot water op-
eration or flush the spray device using cold water oper-
ation.
 The fluid can heat up in cold water operation due to de-
pressurisation of the high-pressure water. Do not touch
any hot surfaces of the spray device.
2.7.4 Noise
WARNING
The high nozzle outlet speed of the high-pressure water jet
results in a high noise level that can cause discomfort or
hearing damage (e.g. tinnitus) to persons in the immediate
vicinity. A continuously high noise level can result in deaf-
ness.
 Wear the prescribed personal protective equipment.
 High noise levels can impair vocal communication and
impair or prevent your ability to perceive acoustic warn-
ing signals. Never work alone. A second person must be
present outside the work area.
2.7.5 Recoil forces
WARNING
The recoil forces occurring when working with a water jet
present a risk of falling.
 Maintain a solid and safe footing. Do not work on lad-
ders.
 Hold the spray device by the specified handles with both
hands.
 Select the nozzle diameter for manually performed
spray work so that the longitudinal recoil force does not
exceed 250 N. The spray device must be equipped with
a body support (see the WOMA product range) if the re-
coil force exceeds 150 N.
 When simultaneously operating multiple spray devices
from a single high-pressure water jet machine, be aware
of the changing recoil forces. The recoil forces occurring
at the other spray devices must not change by more
than 15% when opening or closing a spray device.
Note
The recoil forces present are specified in the WOMA prod-
uct data sheets for the nozzles use, which can be request-
ed from WOMA GmbH (see chapter 1.3 Service).
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