Hydac FluidAqua Mobil FAM 25, Operating And Maintenance Instructions Manual

Page: 36 / 160

Function description
FAM 25/45/60/75/95
en(us)
Page 36/160
BEWA FAM25-95 3402054f en(us) 2013-06-13 2013-06-13
Function description
16
17
13 18
6
15
14
24
5
25
7
8
4
1
20
26
22
21
23
2 3
12
9
10
11
[03]
[02]
[01]
19
IN
OUT
F
A
M
25-
45
FA
M
6
0-
95
Option: ContaminationSensor CS1000
M
M
M
M
CS
AS
Connect up the power unit in bypass flow with the tank that is to be cleaned.
After the unit is switched on, the filling pump (3) begins to convey the fluid from the
tank through the suction filter (1) into the vacuum column (5) . The vacuum pump
(16) sets up the negative pressure in the vacuum column (5) required for dewatering
and degassing.
The negative pressure is regulated by the negative pressure setting (14) ,
continuously measured at the negative pressure sensor (15) and displayed on the
SIMATIC operating panel in the control cabinet.
The fluid percolates downwards in the vacuum column over a special tower packing
and collects in the lower area. After reaching the Max level
[02] , the evacuation
pump (7) switches on and now permanently conveys the fluid out through the fine
filter (9) to the outlet.
As a result of the greater volume flow of the evacuation pump, the filling level in the
vacuum column drops down to the Min level
[01] . Once this is reached, the return
valve (2/2 -way solenoid valve) (26) opens and a partial volume flow is returned into
the vacuum column. The return valve (2/2-way solenoid valve) (26) closes once
again after the Max level [02] has been reached.
Air is drawn in through the air filter (13) as a result of the negative pressure in the
vacuum column (5) . In the counter flow, this air absorbs the moisture of the fluid and
is then drawn off by the vacuum pump (16) through an oil mist separator (17) .
The saturation level of the sucked in fluid is measured continuously by the built-in
AquaSensor
(2) and displayed on the SIMATIC panel. The saturation level indicates
what percent of maximum possible water is dissolved in the oil. A value of 0% would
indicate water-free oil and 100% would mean oil that is completely saturated with
water. It is possible to use the saturation level to control the power unit.