FAM 15/30 ATEX
Description of function
HYDAC FILTER SYSTEMS GMBH
en(us)
Page 27 / 84
BeWa FAM15_30 Atex 3197970c en-us 2012-08-08.doc
2012-08-08
Description of function
Switch on the FAM at the main switch. After the "Start delay" switch is activated, the
inlet valve opens and the vacuum pump builds up the necessary vacuum. This
vacuum causes the fluid which is to be purified to be sucked into the vacuum
chamber.
The fluid to be cleaned trickles downward through special filling materials. These
filling materials multiply the surface in the vacuum chamber and make it possible to
form a fine fluid film.
The fluid collects in the bottom of the vacuum chamber up to the level switch [02].
Then the inlet valve closes, and the evacuation pump conveys the fluid through the
fluid filter to the outlet.
The filling level in the vacuum chamber drops down to the level switch [01]. Once
the level [01] is reached, the 2/2 directional control valve opens, and fluid passes
from the inlet through the suction strainer in vacuum chamber until the level switch
[02] is reached. The 2/2 directional valve closes and the procedure begins again.
The vacuum in the vacuum chamber sucks atmospheric air out through the air filter.
This air flows down into the vacuum chamber and is sucked out by the vacuum
pump. By virtue of this flow of air, the air picks up the humidity of the fluid.
The monitoring of the vacuum pump is limited to the pressure and the temperature.
The oil fill level in the vacuum pump is to be monitored by daily visual inspection.
The vacuum in the vacuum chamber is set with the throttle valve (vacuum setting).
The evacuation pump is protected against dry running by the fill level limit switch in
the vacuum chamber. The fill level limit switch switches the electric motor of the
evacuation pump off when the vacuum chamber has been emptied.
When the "Stop overrun" switch has been pressed, the inlet valve closes and the
evacuation pump pumps the vacuum chamber empty. As soon as the light H2 goes
out, the FAM can be switched off via the emergency-off switch.
When the emergency-off switch has been put into OFF position, the
vacuum pump and evacuation pump are switched off. The inlet valve
closes under spring force.