Appendix - Kärcher WS 50 Betriebsanleitung

 Close the stop valve of the water sup-
ply.
 Depressurise the system, in order to do
so, set the programme button to the Po-
sition 2 - Backwash position.
 Cleaning the injector sieve:
Unscrew and clean the injector sieve.
 Grease the O-ring with silicone grease.
 Cleaning the injector:
Unscrew the injector cap, pull the injec-
tor out using pliers and clean it.
 Reinstall everything.
 Open the stop valve of the water sup-
ply.
 Bleeding the suction hose:
Perform initial start-up or press control
valve flap 1.

Appendix

Detail control valve
1 Air seal valve
2 Ball float
3 Suction hose (red)
4 Salt volume regulator
Pre-set, adjustment is not permitted
Control valve flaps
The control of the control valve flaps takes
place via the cams on the camshaft (not
shown) of the programming unit.
1 Saline solution (bleeding of the suction
hose)
2 Inlet
3 Outlet
4 Bypass
5 Backwash/drain
6 Rinsing/drain
Function control valve flap
1 Valve casing
2 Valve flap closed
3 Valve flap open
4 Cam (camshaft)
Description air seal valve
1 Ball float in open position
2 Ball float in closed position (air in the air
seal valve)
3 Suction hose (red)
If the salt tank is empty, the suction hose
draws air into the air seal valve. The ball
float moves down and closes the valve.
 Bleeding the air seal valve: Fill the salt
tank, then perform initial start-up.
If air is caught in the air seal valve without
the salt tank being empty, the suction sys-
tem is not properly bled.
 Bleeding the air seal valve: Repeat ini-
tial start-up from step 5.
4
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EN 11