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4.3.2
Cleaning the Pressure Elimination Unit
A
20 August 2020
The pressure elimination unit consists mainly of a stainless steel vessel
(E), which is filled with water via the operator's pressurized water line
(D). If the level in the vessel decreases, the float (G) is lowered and
thus opens the valve (F). This allows water to flow into the vessel. The
float is thereby lifted again and closes the valve as soon as the maxi-
mum level is reached. The pressureless water in the vessel is then
pumped by the pump of the direct steam humidification into the
evaporator chamber of the steam generator.
A level sensor (I) is mounted as protection against overflow if the
float valve does not close correctly. This detects an excessively high
water level and closes a solenoid valve (C) in the pressurized water
line.
The pressure elimination unit is suspended in a mounting bracket on
the back of the shaker. The vessel can thus be easily removed for
cleaning and sterilization in the autoclave.
The hose lines to the steam generators are routed at the rear of the
unit and are fastened with hose brackets. Up to three steam genera-
tors can be connected to one pressure elimination unit via T-pieces.
To clean the interior of the vessel, the pressure elimination unit can
be dismounted. Proceed as follows:
1.
Remove the clamp to the operator's water supply line (B).
2.
Disconnect the rapid coupling of the water supply line to the
steam generators (A).
3.
Lift the pressure elimination unit out of the mounting bracket
and place it on a flat surface.
B
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