Proper Use; Function; Safety Devices; Over-Current Protection - Kärcher HDS 9/14-4 ST Betriebsanleitung

Statutory Requirements, Guidelines and Rules
Before installing the machine, it is necessary to get the approval
of the local chief chimney cleaner.
The statutory requirements of civil engineering laws, trade laws
and emission control norms must be followed at the time of instal-
lation. We wish to bring to your notice the following statutory reg-
ulations, guidelines and standards:
The device may only be installed by a specialized company
–
according to the national regulations.
All national laws and regulations about installation of electri-
–
cal appliances must also be followed.
Only Customer Service engineers trained by Kärcher may
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perform settings and carry out maintenance tasks and re-
pairs.
The local guidelines must be followed while installing the
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chimney.
Work-stations
The work station is located at the operating field. Depending on
the plant installation, other work-stations are located at the ac-
cessories (spraying units) that are connected to the feeder
points.
Personal safety gear
Wear ear plugs to protect your ears against
hearing loss while cleaning parts that produce
high sound levels.
Wear protective clothing and safety goggles to protect against
–
splash back containing water or dirt.

Proper use

The machine is used for removing dirt from surfaces using a free-
flowing water jet. It is mainly used for cleaning machines, vehicles
and facades.
Danger
Risk of injury! Follow the respective safety regulations when op-
erating at gas stations or other dangerous areas.
Please do not let mineral oil contaminated waste water reach
soil, water or the sewage system. Perform engine cleaning and
bottom cleaning therefore only on specified places with an oil
trap.
Cold water reaches the suction side of the high pressure
–
pump via the engine cooling coil and the swimmer tank. The
water softening agent is added in the swimmer tank. The
pump transports the water and the sucked detergent through
the continuous heater. The proportion of detergent in the wa-
ter can be adjusted using the dosing valve. The continuous
heater is heated by a heater.
The high pressure outlet is connected to a high pressure net-
–
work existing in the building. The hand-spray gun is connect-
ed to the feeder points of this network using a high pressure
hose.
Safety devices serve for the protection of the user and must not
be put out of operation or bypassed with respect to their function.
Safety mechanism against lack of water in swimmer
The safety mechanism against lack of water prevents the high
pressure pump from being switched on when there is no water.
Safety mechanism against lack of water in safety
The safety mechanism against lack of water prevents the heater
from over-heating when there is no water. The burner operates
only when there is adequate water supply.
The pressure switch switches off the machine when the working
pressure is exceeded. Do not change the setting.
The safety valve opens when there is a problem in the pressure
switch. This valve is set and sealed in the factory. Do not change
the setting.
In case of fuel shortage or problems with the burner, the flame
monitor switches off the burner. The indicator lamp Burner failure
(E) glows.

Over-current protection

If the burner engine is blocked, the switch for protection against
over-current gets released. The engine of the high pressure
pump is protected through an engine protection switch and a
winding protection switch.
The exhaust thermostat is triggered when the exhaust tempera-
ture exceeds 300 °C. The appliance is switched off.
Pressure release in the high pressure system
When the machine is switched off using the hand-spray gun, a
solenoid valve installed in the high pressure system opens when
the operations stand-by time has elapsed; this causes the pres-
sure to fall.
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EN

Function

Safety Devices

tank
block
Pressure switch
Safety valve
Flame monitoring
Exhaust thermostat
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