6
3.
Design/Fuction/Illustrations
The cold water high pressure cleaners of this series mainly comprise a
low speed high pressure inline plunger pump which is directly flanged to
an high efficient, 100 % duty cycle electric motor.
The feed water is directed with the necessary admission pressure via a
filter into the high pressure pump, forwarded to the spray nozzle and so
boosted to working pressure.
Downstreams of the high pressure pump a safety/control valve is
arranged which opens in case the max. operating pressure is exceeded
by more than 10 % and returns the water which cannot be taken by the
nozzle into the suction line of the high pressure pump.
The machine is equipped with a circulation safety cut-off and additionally
with a thermo valve in order to protect the high pressure pump against
overheating. When closing the spray pistol, the safety/control valve
opens and returns the circulating water into the suction line of the high
pressure pump If in this operating mode the water temperature exceeds
60 °C, the thermo valve opens, releases hot water and allows cold
water to enter. When activating the spray pistol again, adjusted working
pressure is generated immediately so that the cleaning task can be
continued without delay.
The range of applications can be extended by a variety of accessories
available from OERTZEN. Contact your local distributor.
