FCU 8000 series
Performing maintenance
HYDAC FILTER SYSTEMS GMBH
en(us)
Page 94/112
BEWA FCU8000 3109776d en-us 2011-06-10.doc
2011-06-10
Performing maintenance
Carry out the specified configuration, maintenance and inspection work every six
months or, at the latest, when an error message or malfunction makes it necessary.
Disconnect the FCU from the power supply when performing any maintenance,
inspection or repair work.
Once maintenance work is complete, check that the FCU is still working properly.
Cleaning the FCU
Clean the control panel with a clean, moist cloth. Do not use any chemical cleaning
agents, as these may damage the film attached to the surface of the FCU. Clean the
outside of the FCU with a moist cloth.
Changing the FCU Filter Element
The FCU has an internal filter element with a differential pressure switch. The
differential pressure switch switches at 2 bar. The message "Filter clogged" will
appear on the display. Ensure that the flow rate control valve is not closed.
If the filter is contaminated, but the differential pressure of 2 bar cannot be achieved
(e.g. with an inlet pressure <2 bar), then there will be no indication on the display.
Only the message "Flow error" will appear in such cases.
To change the filter, proceed as follows:
1. Put a suitable drip tray in place to catch the oil
(~0.5 l).
Turn the FCU so that the rear side faces
upwards. Ensure that the flow rate control
valve is not damaged.
2. Unscrew the screw plug with a size 19 ring
spanner by turning it counterclockwise.
