DNCKE−...−S / KEC−...−S
Festo DNCKE−...−S / KEC−...−S 1002a English
48
If the product is used as a braking device:
Note
Frequent use of the product as a brake will increase wear depending on how
often it is used.
S
Therefore, check the overtravel regularly (in accordance with the specifica
tions in the chapter Validating by checking" in the validation report as per
EN 13849−2).
The overtravel depends on the loading and on the following ambient condi
tions: temperature, oil on the piston rod, switching cycle rate, speed, mass,
operating pressure and control (diagrams see chapter Characteristic cur
ves").
S
Adjust the clamping unit regularly or when there are signs of wear:
Test pro
cedure
Clamping unit as holding
device
Clamping unit as braking
device
Signs of
wear
clamping unit cannot hold the work load securely
loud noises
holding force is not achieved (work load slides through)
The moveable mass should always maintain the clamping position and
reach the end positions without knocking hard against them.
Test cycle
every 100,000 clampings
The testing and adjusting cycle de
pends on the specifications of the
Adjusting
cycle
every 500,000 clampings or when
there are signs of wear
pends on the specifications of the
application and must be deter
mined by the customer within the
framework of the validation report.
Adjusting
procedure
See chapter Commissioning
preparation"
Fig.33
S
Check whether more frequent tests should be made if:
In the event of high thermal loads.
If there is excessive accumulation of dirt.
fat solvent fluids or fumes in the vicinity.
S
Avoid the piston rod or the exhaust hole
7
becoming dirty.
Only in this way can you be sure that the functioning is not impaired.
