Operation - Festo DNCKE S Serie Instrucciones De Utilizacion

DNCKE−...−S / KEC−...−S
7

Operation

Before loosening the clamping
WARNING
Unexpected movement of components.
Injury due to impacts or pinching.
• Make sure that there is an equilibrium of forces on the piston of the drive cylinder.
Especially when the device is mounted vertically, there is a danger of the piston rod
extending suddenly when it is loosened due to the axial force (weight force).
After an emergency stop and after each adjustment, consider:
Note
The further operational reliability of the clamping unit may be impaired, depending on
the brake loading.
• Check clamping unit for safe function (è 6.4 Check of the overtravel):
– after every emergency stop
– after every adjustment
– at least once per month
If the clamping unit does not clamp the payload securely:
• Readjust the clamping unit (è 6.2 Adjustment of the clamping unit).
If there are modifications to the payload or operating pressure:
Note
Payloads that have been increased subsequently and modified operating pressure
change the clamping conditions and might impair operational reliability.
• Observe that the maximum loadings do not exceed the permitted limits
(è 13 Technical data).
If the clamping unit does not clamp the payload securely:
• Readjust the clamping unit (è 6.2 Adjustment of the clamping unit).
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 this
is done.
• Therefore, check the overtravel regularly (in accordance with the specifications in
the chapter "Validating by checking" in the validation report as per EN 13849-2).
The overtravel is dependent on the load and the environmental conditions: temper­
ature, oil on the piston rod, number of switching cycles, speed, mass, operating
pressure and control (diagrams è 14 Characteristic curves).
48 Festo – DNCKE−...−S / KEC−...−S – 1511b English