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3.
Configuration/Illustration
The machines of the Mobile series consist of a low speed, high pressure inline
plunger pump, driven by a low-emission 4-stroke engine in V-design. In order
to extend the engine lifetime, an oil shortage cut-out is installed, which
switches off the engine in case the oil level drops below specified limits.
An oil-greased reduction gearbox flanged between pump and engine reduces
the high pressure pump speed and as a result extends the maintenance
intervals of the pump.
The feed water is directed with the required admission pressure via a pre-filter
to the high pressure pump which – in connection with the required spray
nozzle – boosts it to the stated/adjusted working pressure. In order to protect
the pump against cavitation due to poor water flow, a low water cut-out is
arranged which stops the machine as soon as the flow pressure drops below
2 bar.
Downstream of the high pressure pump a locked and sealed safety/control
valve is installed which opens as soon as the operating pressure is exceeded
by more than 20 bar and returns the water which cannot be taken by the
nozzle back into the suction line of the pump.
It also allows to continuously adjust working pressure and water flow as
required.
The machine is equipped with a circulation shut-off system and additionally
with a thermo valve in order to protect the pump against overheating. After
closing the spray pistol the safety/control valve opens, and returns the circu-
lating water back into the suction line. If the temperature of the circulating
water exceeds 60 °C, the thermo valve opens, releases small amounts of hot
water and allows cold water to enter. Re-starting and immediate generation of
required/adjusted working pressure is achieved by opening the spray pistol
again, allowing to continue the cleaning task without delay.
The range of applications can be extended by a variety of accessories
available. Contact your local distributor.
