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HDS 798 C

9

Setting cleaning temperature

Set selector switch (1) to desired
temperature

30°C to 90°C
Hot water cleaning

100°C to 150°C
Steam cleaning (with steam nozzle
4.677023)

Setting operating pressure and
flow rate

Fig. 8
Turning regulator clockwise:
Increases operating pressure (MAX)
Turning counter-clockwise: Reduces
operating pressure (MIN)

Servopress control
Set selector switch (1) to max. 98°C.
Set regulator to maximum operating
pressure.

Fig. 11
Operating pressure and flow rate
can be set at handgun.
Set pressure on unit if use is to be
made of reduced pressure for a
lengthy period. See Fig. 8

Measuring out the cleaning agent

*

  Use cleaning agents sparingly to

protect the environment

*

  The cleaning agent must be

suitable for the surface to be
cleaned.

Fig. 10
Set cleaning-agent concentration as
specified by manufacturer
0 =Working without cleaning agent

Metering setting

Concentration

1

0,25%

2

1,00%

3

1,25%

4

1,50%

5

1,75%

6

2,00%

Approximate values at maximum
operating pressure

Intended use

Cleaning of: Machines, vehicles,
buildings, tools, facades, terraces,
garden tools, etc..

*

  Engine cleaning is only to be

performed in areas provided with
oil separator.

*

  Heed appropriate safety

regulations for use at petrol
stations or in other hazardous
environments.

Working with high-pressure
nozzle
Spray angle is crucial to efficiency of
high-pressure jet.
Use is normally made of 25°fan jet
nozzle (included).

Recommended nozzles, available as
accessories

  For stubborn dirt 0°full jet nozzle

  For delicate surfaces and slight

contamination 40°fan jet nozzle

  For thick layers of stubborn dirt dirt

blaster

  Nozzle with variable spray angle,

for adaptation to various cleaning
tasks variable-angle nozzle

Cleaning

*

  Set pressure/temperature and

cleaning-agent concentration in
line with surface to be cleaned

*

  To avoid damage from excessive

pressure, always direct the high-
pressure stream onto the object to
be cleaned from a sufficient
distance away.

Recommended cleaning method
Loosen up dirt:
Spray on cleaning agent sparingly
and allow to react for 1...5 min (do
not allow to dry on).
Remove dirt:
Spray off loosened-up dirt with high-
pressure jet.

Operation with cold water

Removal of slight contamination and
rinsing
e.g.: Garden implements, terrace,
tools, etc.

Set operating pressure as required
Set selector switch to "I"

Operation with hot water

*

  Danger of scalding

We recommend the following
cleaning temperatures

  Slight contamination 30-50°C

  Protein soiling, e.g. in foodstuffs

industry max. 60°C

Summary of Contents for HDS 798 C

Page 1: ...HDS 798 C www karcher com 5 959 368 09 99 1 174...

Page 2: ...HDS 789 C 1 2 3 4 5 6 7 8 9 10 11 12...

Page 3: ...HDS 789 C 13 14 15 16 17 18 19 20...

Page 4: ...HDS 798 C Operating Instructions 5 Spare Parts List 14...

Page 5: ...tching on unit 8 Setting cleaning temperature 9 Setting operating pressure and flow rate 9 Measuring out the cleaning agent 9 Intended use 9 Cleaning 9 Operation with cold water 9 Operation with hot w...

Page 6: ...e all times Follow te maintenance instructions specified in the manual This product must connected to a power supply receptacle protected by a GFCI ground fault circuit interrupter If Replacement Of T...

Page 7: ...If oil level is approaching MIN mark fill up with oil as far as MAX mark Seal oil filler inlet Refer to technical data for oil grade Filling with scale inhibitor Fig 6 sample pack included with scope...

Page 8: ...wer plug Have power plug fitted by K RCHER AFTER SALES SERVICE or an authorised electrician Set selector switch to 0 Insert power plug Whenever socket is changed check direction of rotation of motor I...

Page 9: ...with oil separator Heed appropriate safety regulations for use at petrol stations or in other hazardous environments Working with high pressure nozzle Spray angle is crucial to efficiency of high pre...

Page 10: ...drained off completely Store unit in a frost free location Take unit out of service if frost free storage is not possible DISCONTINUATION OF USAGE In the event of lengthy periods of non use or if fros...

Page 11: ...off Motor overloaded overheated Set selector switch to 0 and allow motor to cool down for at least 5 min Have unit checked by After Sales Service if this does not remedy fault SCALE INHIBITOR indicat...

Page 12: ...ice and produce both accessories and proof of purchase GENERAL INSTRUCTIONS Safety features Overflow valve with two pressure switches When reducing water volume at pump head or with the servopress con...

Page 13: ...erating pressure cold hot water with standard nozzle supplied 32 150 bar Flow rate steam 360 l h Operating pressure steam with steam nozzle 4 766 023 max 32 bar Operating temperature Hot water max 90...

Page 14: ...HDS 798 C 14...

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