Manual Karcher HD 7-16-4 ST (page 19 of 168) (English, German, Dutch, Danish, French, Italian, Portuguese, Swedish, Spanish, Norwegian, Finnish)

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The winding protection contact in the motor

winding of the pump drive switches off the

engine when there is a thermal overload.

(With HD 13/12-4 ST only...).

If the appliance is not used for an extended

period of time (adjustable 5...120 minutes),

the appliance will shut off.

If the operating time (without interruption of

work) exceeds an adjustable value (5...120

minutes), the appliance will shut off.

The motor protection switch switches off

the device if the power consumption is

high.

In case of leaks in the high pressure sys-

tem, the appliance is shut off.

After the operation readiness period, a so-

lenoid valve opens in the high pressure

system and relieves the pressure.

The lack of water fuse in the float container

prevents the high pressure pump from run-

ning dry in case of a lack of water.

– This equipment produces water under

high pressure downstream to high pres-

sure cleaning devices. If required the

detergent is drawn in and added to the

water.

– The high pressure module is perma-

nently installed in a dry, frost-free room.

The high pressure water is distributed

through a fixed network of pipes.

Alternatively, a hand spray gun with a

high pressure hose can be connected

directly to the high pressure outlet of the

appliance.

– The high pressure model must be in-

stalled at a wall in such a way that the

rear opening is sealed by the wall.

DANGER

Risk of injury! Follow the respective safety

regulations when operating at gas stations

or other dangerous areas.

ATTENTION

Only clean water may be used as high

pressure medium. Impurities will lead to in-

creased wear and tear or formation of de-

posits in the appliance.

If recycled water is used, the following limit

values must not be exceeded.

Winding protection contact

Operational readiness period

Hose break protection

Motor protection switch

Leakage monitoring

Pressure relief (option)

Lack of water fuse (option)

Proper use

Please do not let mineral oil contaminated

waste water reach soil, water or the sew-

age system. Perform engine cleaning and

bottom cleaning therefore only on speci-

fied places with an oil trap.

Water quality requirements

pH value 6,5...9,5

electrical conductivity * Conductivity

fresh water

+1200 µS/cm

settleable solids ** < 0,5 mg/l

total suspended solids *** < 50 mg/l

Hydrocarbons < 20 mg/l

Chloride < 300 mg/l

Sulphate < 240 mg/l

Calcium < 200 mg/l

Total hardness < 28 °dH

< 50 °TH

< 500 ppm

(mg CaCO3/l)

Iron < 0,5 mg/l

Manganese < 0,05 mg/l

Copper < 2 mg/l

Active chloride < 0,3 mg/l

free of bad odours

* Maximum total 2000 µS/cm

** Test volume 1 l, settling time 30 min

*** no abrasive substances

19EN

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Karcher HD 7-16-4 ST Manual

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