Bedienungsanleitung Karcher HDC 90-10 Advanced (Seite 19 von 376) (Alle Sprachen)

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The water flows back from the swimmer

tank to the suction side of the pump. The

water level in the swimmer tank is kept con-

stant by the swimmer valve. In case of fail-

ure of the swimmer valve, the water exits

via the overflow. If the water supply is dis-

turbed, the lack of water fuse will send an

error message to the controls.

The electric engine will drive the crankshaft

pump. The pump transports the water un-

der high pressure to the pressure side.

The high-pressure water reaches the high-

pressure output via the overflow valve and

the pressure sensor. After that, there will be

the high-pressure network of the operator.

Remaining water will be routed back to the

floater basin by the overflow valve. If all

consumer loads have been switched off,

the overflow valve will completely switch to

backflow to the floater basin. If the pressure

at the output exceeds the maximum operat-

ing pressure at the output, the safety valves

will open.

– The appliance will be switched to

READY mode by activating the release

switch. If the pressure in the systems

sinks below the determined switch-on

point due to the opening of a hand

spray gun, the high-pressure pumps will

be switched on.

The first pump is switched on via the

frequence inverter, all remaining pumps

are operated directly via the mains.

– If the flowmeter at the overflow valve is

triggered while the high-pressure

pumps are running after closing all

hand sprayguns, the pump is switched

off once again with a 30 second delay.

– If the system is ready and the high-

pressure pumps are not turned on, a

timer is started, which will reset the

readiness of the unit when the preset

time has elapsed.

Safety devices serve for the protection of

the user and must not be put out of opera-

tion or bypassed with respect to their func-

tion.

The safety mechanism against lack of wa-

ter prevents the high pressure pumps from

being switched on when there is no water.

The temperature sensor switches off the

appliance as soon as the water tempera-

ture is too high.

The winding protection contact in the motor

winding of the pump drive switches off the

engine when there is a thermal overload.

– The safety valve opens when the over-

flow valve is defective.

– The safety valve is set by the manufac-

turer and sealed. Setting only by cus-

tomer service.

– If all hand spray guns are closed, the

overflow valve opens and the entire wa-

ter volume will flow back into the floater

basin. The high pressure pumps are

switched off via the flowmeter once the

set delay time has elapsed.

– The remaining water flows back into the

floater basin via the overflow valve.

If the hand spray gun is opened again, the

high pressure pumps will restart via the

pressure sensor for high pressure.

Water inlet

Pumps

High pressure side

Pressure regulation

Controls

Safety Devices

Safety mechanism against lack of

water in swimmer tank

Temperature sensor

Winding protection contact

Safety valve

Overflow valve with flowmeter

Pressure sensor for high pressure

19EN

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Karcher HDC 90-10 Advanced Seite 19

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