Oertzen M 240, Руководство по эксплуатации

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3.
Configuration/Illustration
The machines of the Mobile series consist of a low speed, oil-greased high
pressure inline plunger pump, driven by a low-emission 4-stroke petrol engine
in V-design. An oil-greased reduction gear flanged between pump and motor
reduces the high pressure pump speed. 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 gear which is flanged between high pressure pump
and petrol engine reduces the high pressure pump speed and so extends the
lifespan of the pump.
The feed water is fed into the high pressure pump via a pre-filter (1) which – in
connection with the correct spray nozzle – boosts the pressure up to the
adjusted/required working pressure.
A sealed safety/control valve which is arranged downstreams of the high
pressure pump opens as soon as the operating pressure is exceeded by more
than 10 % and returns the water which cannot be taken by then nozzle back
into the suction line of the high pressure pump. In parallel, it allows to
continuously adjust working pressure and water flow.
By opening the rotary handle at the double lance the working pressure can be
adjusted 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.