Indication Toward Operating Instructions; Proper Use; Safety Devices; Safety Valve - Kärcher HDS 551 C Eco Instruction Manual

2 Indicator lamp for fuel shortage
(not HDS 551 C Eco)
3 Liquid softner indicator lamp
(not HDS 551 C Eco)
4 "Ready for use" indicator lamp
5 Indicator lamp for detergent
(not HDS 551 C Eco)
6 Indicator lamp exhaust temperature lim-
iter
Figure 1 - Pos. 5
Push down cover lock with screw driver or
coin, to open twist counterclockwise Twist
clockwise to lock
Figure 1 - Pos. 13
Storage compartment for accessories
(under the appliance hood)
– Steam nozzle (4.766-023) optional
Indication toward operating
instructions
All subsequent specified position numbers in
this operating instruction are listed in the de-
vice illustration

Proper use

Cleaning of: Machines, Vehicles, Structures,
Tools, Facades, Terraces, Gardening tools,
etc.
Danger
Risk of injury! Follow the respective safety
regulations when operating at gas stations
or other dangerous areas.
Please do not let mineral oil contaminat-
ed waste water reach soil, water or the
sewage system. Perform engine cleaning
and bottom cleaning therefore only on
specified places with an oil trap.
26
English

Safety Devices

Overflow valve with two pressure
switches
Only HDS 558.../601.../698.../798...
– While reducing the water supply at the
pump head or with the Servopress - reg-
ulation the overflow valve opens and part
of the water flows back to the pump suck
side.
– If the hand-spray gun is closed, so that
the whole water flows back to the pump
suck side, the pressure switch at the
overflow valve shuts down the pump.
– 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 manufactur-
er and sealed. Setting only by customer
service.
Pressure switch
HDS 551 C Eco only
– The pressure switch turns the device off
when the handgun is closed and switch
on when the handgun is opened.

Safety valve

– The safety valve opens, when the over-
flow valve resp. the pressure switch is
broken.
The safety valve is set by the manufacturer
and sealed. Setting only by customer serv-
ice.
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 safeguard and must be cleaned reg-
ulary.