Subject to change · FNA1HV 005_008_016_43622600 · 0421 · EN
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The off-line filter unit is maintenance-free, except from the filter element (see page 11, pos. 3) and the suction strainer (if used).
12.3
Changing the filter element
It is necessary to change the filter element if - during operation in the range of the permissible viscosity - the clogging indicator chan-
ges from the green to the red area.
Follow the steps below to change the filter element (see also Fig. 5 and Fig. 6):
12.3.1 Before changing the filter element
1. When using a suction strainer or suction lance, remove the corresponding component from the hydraulic tank of the machine
or system and suck air for max. 30 seconds. Residual oil from the bypass filter unit is returned to the hydraulic tank of the
machine or system via the pressure lance.
2. Switch off the unit and disconnect the power supply.
3. If necessary, let the unit cool down.
12.3.2 Disassembly of the filter element
4. Unscrew the filter cover.
5. Carefully pull the cover with the filter element out of the housing.
6. (Filter element is attached to the cover, let escaping oil drip down into the housing).
7. Release the filter element from the cover by moving it as shown in Fig. 6.
8. Dispose of the filter element in accordance with environmental regulations, waste code: OIL FILTER 16 01 07
Table 9: Maintenance intervals
Maintenance work
Order no.
Maintenance interval
Check / change
filter element
V7.1220-113 (3 µm)
V7.1220-13 (5 µm)
V7.1220-06 (10 µm)
Y7.1220-05 (7 µm)
Y7.1220-113 (3 µm)
Once the contamination indicator
changes to the red area within the range
of permissible viscosity.
Check / change
suction strainer
FA 016.0301
a) Visual inspection before each
commissioning.
b) On each change of the filter element.
Fig. 6: Releasing the fixture at the cover / filter element
