Karcher HD 3-7-22-4S Eg - Manual (Page 7)

English
7
Unit components
Please fold out illustration page at the front
1 Hand-held spray gun
2 Lever of hand-held spray gun
3 High-pressure hose
4 Handgun support
5 Detergent metering valve
6 Cap for detergent reservoir
7 Detergent reservoir
8 Detergent suction-hose with filter
9 Fastening screw for hood
10 Unit switch
11 Hood
12 Pressure gauge
13 High-pressure outlet
14 Nozzle rest
15 Water connection
16 Fine filter
17 Oil level display
18 Oil reservoir
19 Indicator light
20 Hose rest
21 Detergent reservoir vent
22 Accessories box
23 Cable holder
24 Handle
25 Nozzle
26 Marking of the nozzle
27 Spray lance
28 Pressure/flow control
29 Safety catch of hand-held spray gun
For your safety
Before you use the cleaner for the first time,
read these operating instructions and take
special note of the accompanying booklet
"Safety Instructions for High-Pressure Clean-
ers" No. 5.951-949.
Use of the cleaner
Use this unit exclusively for
– cleaning with high-pressure jet and deter-
gent (e.g. cleaning of machines, vehicles,
buildings, tools),
– cleaning with high-pressure jet without de-
tergent (e.g. cleaning facades, terraces,
gardening equipment).
For stubborn dirt we recommend the dirt
blaster as an optional accessory.
Safety features
Relief valve with pressure
switch
On reducing the flow rate with the pressure
and flow control, the relief valve opens and
part of the water runs back to the suction side
of the pump.
If the lever of the hand-held spray gun is re-
leased, the pressure switch switches the
pump off. If the lever is retracted, the pressure
switch switches the pump on again.
The overflow valve and pressure switch have
been set and sealed at the factory.
Adjustments are made only by Customer
Service.