Installation | 5
0870211676_RA0760A_PLUS_-0004_IM_en 23 / 68
Hardness mg/l (ppm) < 90
Properties Clean & clear
PH value 7 ... 8
Particle size µm < 200
Chloride mg/l < 100
Electrical conductivity µS/cm ≤ 100
Free chloride mg/l < 0.3
Materials in contact with the cooling water Stainless steel, copper and cast iron
NOTE
Water hardness unit conversion.
1 mg/l (ppm) = 0.056 °dh (german degree) = 0.07 °e (english degree) = 0.1 °fH (french
degree)
5.2.4 Inlet Filter Condition Monitoring Kit
• To install the Inlet filter condition monitoring kit:
– Remove the R1/4 screw plug from the inlet filter cover
– Mechanically fit the Pressure Sensor at the desired location upstream of the vacuum
pump inlet (on a vacuum vessel or in the vacuum chamber for instance).
– Electrically connect the Inlet filter condition monitoring kit to the control unit (CU):
connection terminals X1-24V and X1-36 (see wiring diagram T511205926 in the
control unit cabinet)
– Enable the Inlet filter condition monitoring function in the “Advanced settings”
menu of the User Interface and set the Inlet filter pressure differential warning
threshold in the “Warnings and Alarms thresholds” menu, refer to the specific docu-
ment "Pump Control Instructions, art. no.: 0870213261". This parameter is only
available for “Role 3” people, see Role and User [►12].
NOTE
• Use an ECM cable gland.
• Connect the cable shielding according to the state of the art (refer to the instructions
of the cable gland manufacturer).
• It is not possible to install the Inlet filter condition monitoring kit if an external inlet
pressure sensor is already connected to the Control Unit of the machine
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