NaceCare Solutions K1122TST - Manual (Page 21)

21
Pressure gauge shows little pressure, the water from the nozzle comes
in squirts: Most likely the valves are soiled or sticky.
The pressure gauge shows little pressure
despite fully turned up pressure regulation.
The water from the lance comes in squirts.
The HP hose vibrates.
(Inside the pressure gauge is no water but
a filling with glycol to damp the vibration of
the pointer.)
Proceeding:
Unscrew all 6 valves, one after the other
(hexagonal brass screws, 3 in a row,
vertically and horizontally)
Take out valve body (with green or red
plastic coating) and O-ring by means
of needle nose pliers. Check O-ring for
damage. In case of a damage the O-ring
has to be replaced.
Take a wire (paper clip) and clean valves
under running water.
Do not forget the O-ring during
reassembly!