Bosch Rexroth CytroPac, Operating Instructions Manual, Page: 60 / 84

60/84 Maintenance and repair
Bosch Rexroth AG , CytroPac, RE 51055-B/06.17
10.5.4 Filter element contamination monitoring (return flow filter)
Be critical if the filter contamination sensors do not indicate any change over
multiple inspection intervals. Of course, this may always be an indicator that the
hydraulic fluid is clean. However, it may also have the following causes:
– The contamination indicator is defective.
– The filter element is defective.
Plan and carry out replacement of the filter element at the end of the shift.
Shorten the intervals between the required replacement of filter elements, identify
the cause of the deposition of dirt and correct it.
Proceed as follows:
1. Before starting to work, provide receptacles for the hydraulic fluid and the filter
element.
2. Depressurize the hydraulic power unit and secure it against unintentional start-
up.
3. Fold out the spring clip with a screwdriver or similar.
4. Remove the filter cover.
5. Pull the filter element out of the clip.
6. Insert a new filter element (see chapter 17.3 "Accessories").
7. Apply the filter cover again.
8. Slide the spring clip with a screwdriver into the locking position of the filter
cover.
9. Dispose of the filter element in accordance with national or company-specific
regulations.
Fig. 23: Exchanging the filter element
Measure:
Exchanging the return flow
filter element:
3. / 8.
4. / 7.
5. / 6.