Safety Block For 350/500Bar Devices - Kärcher HDS 9/50 De Tr1 Service Manual

Adjust safety valve
NOTE
The safety valve is adjusted via the pressure increase in
the system with the burner turned on, so that it limits the
pressure increase to the max. permissible value (see
Specifications) with the gun closed.
Then seal the settings.
 Block the overflow device (turn to stop).
 Set the safety valve to approx. 220-230 bar.
The opening pressure of the safety valve is adjusted
with the adjustment screw.
Rotation to the right increases the opening pressure,
rotation to the left decreases the opening pressure.
 Finally readjust the overflow device.

11.10.2 Safety block for 350/500bar devices

NOTE
The service tasks on the safety blocks are in line with the
descriptions of the 200bar safety block, for details see pre-
vious chapter.
The safety valves of the two safety blocks cannot be ad-
justed. These are permanently set and marked.
 Loosen screws.
 Remove and clean magnetic pen.
English 5.906-736.0 Rev. 00 (07/15)
137