Structure and Function
A: PL120101.054
B: PL120100.054
E: 03.93 / T. Weiß
G: 06.93 / T. Weiß
Chapter: 5.4
Page: 1
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5.4 Hydraulic unit
5.4.1 Pump element
A continuously active electric motor is mounted with the
pump. This electric motor drives the hydraulic pressure pump
via the coupling. The hydraulic pressure pump is a variable
capacity pump connected to the central hydraulic block by
means of tubing.
The maximum system pressure is 210 bar (3045 psi).
5.4.2 Oil tank
The oil tank is a fixed component of the machine frame; it is
equipped with filler necks plus an air filter and an oil level
indicator.
The control reacts if the oil level is too low; in this case, refill
oil until the oil level indicator mark is again attained.
In order to clean the tank properly, unscrew the fastening
screws and remove the tank cover.
5.4.3 Oil filter
In order to increase the operational safety and material life of
the hydraulic elements and seals, the hydraulic unit is
equipped with a return filter integrated into the oil tank.
This return filter is situated at the back of the machine, below
the central hydraulic block; it is equipped with an optical
clogging indicator which should be checked daily.
If the arrow of this indicator is in the red area, it is necessary
to replace the filter element at once.
Optional: Electrical clogging indicator
If the filter is clogged, a visual error message is issued on the
display. In this case, immediately replace the filter element.
HYDAC
bar
10
0
2
3
Bild: PL-0036.WMF
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