Kärcher HDS 8/18-4 C Original Instructions Manual page 18

– If the hand spray gun is opened, the pressure
switch on the cylinder head turns the pump back
on.
The overflow valve is set by the manufacturer and
sealed. Setting only by customer service.
Safety valve
– The safety valve opens, when the overflow valve
resp. the pressure switch is broken.
The safety valve is set by the manufacturer and sealed.
Setting only by customer service.
Water shortage safeguard
– The water shortage safeguard prevents the burner
to be turned on when there is water shortage.
– A sieve prevents the contamination of the safe-
guard and must be cleaned regular.
Temperature stop for exhaust gases
– The temperature stop switches off the machine
when the waste gases have reached very high tem-
peratures.
WARNING
Risk of injury! Appliance, accessories, supply lines and con-
nections must be in fault-free condition. If they are not in a
perfect state then the appliance must not be used.
 Lock parking brake.
Installing the handle
Figure 3
Screw tightening torque: 6.5-7.0 Nm
Install the tool bag
Figure 4
 Hook the tool bag onto the top tabs on the appli-
ance.
 Tilt the tool bag down and lock it into place.
 Fasten the tool bag with 2 screws (torque: 6.5 -
7.0 Nm).
Note: 2 screws are left over.
Install the hand-spray gun, the jet pipe, the
nozzle and the high pressure hose
Note: The EASY!Lock system joins components with a
quick-fasten thread solidly and securely with just one
turn.
Figure 5
 Join the spray lance with the trigger gun and tighten
until hand-tight (EASY!Lock).
 Insert the high pressure nozzle onto the spray
lance.
 Install union nut and hand-tighten it (EASY!Lock).
 Join the high-pressure hose with trigger gun and
high-pressure connection of the appliance and
tighten until hand-tight (EASY!Lock).
Refill system care
– The system care prevents the calcification of the
heating spiral while operating with calciferous tap
water. It is dosed into the supply in the float con-
tainer drop by drop.
– The metering is set to medium water rigidity by the
manufacturer
Note: A sample bundle of system care is included.
 Refill system care.
18
Start up
DANGER
Danger of explosion! Only refill diesel oil or light fuel oil.
Inappropriate fuels, e.g. petrol, must not be used.
ATTENTION
Risk of damage! Never operate device with an empty
fuel tank. The fuel pump will otherwise be destroyed.
 Refill fuel.
 Close tank lock.
 Wipe off spilled fuel.
DANGER
Risk of injury!
– Use Kärcher products only.
– Under no circumstances fill solvents (petrol, ace-
ton, diluting agent etc.)
– Avoid eye and skin contact.
– Observe safety and handling instructions by the de-
tergent manufacturer.
Kärcher offers an individual cleaning and care ap-
pliances program.
Your dealer will consult you gladly.
 Refill detergent.
For connection values refer to technical specifications.
 Connect the supply hose (minimum length 7.5 m,
minimum diameter 3/4") to the water connection of
the unit and to the water inlet (e.g. tap) using the
water connection adapter.
Note: The supply hose is not included in the scope of
delivery.
Suck in water from vessel
If you want to suck in water from an external vessel, the
following modification is necessary:
Figure 6
 Remove the two screws on the burner casing.
Figure 7
 Unscrew the back wall and remove it.
Figure 8
 Remove water connection from the fine filter.
 Unscrew the fine filter from the pump head.
 Remove the system care reservoir.
Figure 9
 Unscrew the top supply hose to the swimmer con-
tainer.
 Connect the top supply hose at pump head.
 Replug the rinse line of the detergent dosing valve
to blind plugs.
 Connect suction hose (minimum diameter 3/4")
with filter (accessory) to the water connection point.
– Max. suck height: 0.5 m
Until the pump sucked in water, you should:
 Set the pressure/quantity regulation at the pump
unit to maximum quantity.
 Close the dosing valve for the detergent.
DANGER
Risk of personal injury or damage! Never suck in water
from a drinking water container. Never suck in liquids
which contain solvents like lacquer thinner, petrol, oil or
unfiltered water. The sealings within the device are not
solvent resistant. The spray mist of solvents is highly in-
flammable, explosive and poisonous.
 Assembly in reverse order.
– 3
EN
Refill fuel
Refill detergent
Water connection