18
Instructions to follow
Precautions/ assistance
Possible consequences if
instructions not followed
Use exclusively the specified
operating fluids in pure form.
Ensure that the valve is operated
in accordance with the cleanliness
class 18/16/13 ISO4406 or
cleaner (equivalent to NAS 1638
class 10).
Impaired function or malfunction
Vent your hydraulic system
before initial start-up.
After that, we recommend
venting the valve separately
during initial start-up.
Only perform the venting
procedure at the valve if
there is no pressure at
ports A or B.
To perform venting, loosen the
vent screw (max. three thread
turns), but do not removed it
completely. Apply pressure to the
valve at port P. When oil exits
without any bubbles, tighten the
vent screw.
Impaired valve function and
unstable function of the
hydraulic drive are possible
Take suitable measures to
prevent interference in the
voltage or signal supply.
Use shielded connection cables
and connect the cable shielding to
the earth rail.
Function impaired by interfering
signals in the voltage and signal
supply
Bear in mind the loss of voltage
over the cable length.
To comply with the specified
supply voltage range, choose a
large cable cross section or adjust
the cable length.
If the voltage drop in the signal
line is excessively high, change to
a valve with current input.
Function impaired by drop in
voltage in the voltage and signal
supply
Perform a safety review of the
system.
Add an extra hydraulic safety
circuit for the valve for secure
pausing and stopping of the drive
during operation and initial start-
up.
Uncontrolled movement of the
consumer.
Pretension the tank connection.
We recommend integrating a non-
return valve with 0.5 bar into the
tank line.
Impaired function and instability
of the valve
Prevent tank back pressure from
affecting the valve.
Connect the tank lines to the tank
container as directly as possible
to avoid higher back pressures of
<5 bar.
Malfunction or failure of the
valve
Ensure that the valve is only
operated with the described
environmental conditions
regarding the protection type
and vibration load.
Observe the technical data
specified in section 2.3.
Malfunction or impaired function
of the valve
Ensure that the defined viscosity
and temperature ranges are
complied with.
Observe the technical data
specified in section 2.3.
Malfunction or impaired function
of the valve
E
N
5.
9
07.
6.
B
A
.
0/
10.
20
