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Locking by Spring Force / Hydraulic Releasing
SITEMA - Locking Unit KFH
Technical Data Sheet
TI-F50-EN-06/2010
SITEMA GmbH & Co.KG . Im Mittelfeld 10 . D-76135 Karlsruhe . Phone: +49(0)721/98661-0 . Fax: -11 . www.sitema.com 4/4
Operating conditions
The Locking Unit KFH is designed to operate in usual clean and
dry shop atmosphere.
In case of other environments at least the T-port for breathing
purposes is to be connected to a clen and dry volume (tank).
Should heavy soiling conditions (grinding dust, chips, other liquids,
etc.) exist, please contact SITEMA.
Grease on the rod may reduce the holding force. The permissible
ambient temperature is 0 - 60°C.
Regular functional checks
The Locking Unit KFH must be functionally checked at regular
intervals. Regular checking is the only way to ensure that the
unit operate safely in the long run.
For applications in the field of personal safety (operater protection),
testing must be carried out at least once every 6 months.
Depending on the relevant application parameters (soiling level,
cycle time, control), significantly more frequent checks may
be advisable. In many cases, even (fully automatic) daily
checks may be necessary.
For testing a force at least equal to the working force, but normally
equal to the nominal holding force F is applied.
In every case the criteria is, that the test force is held without
slipping.
Required risk assessment
It must be ensured that the dimensions and arrangement of
SITEMA - Safety Brakes in safety-relevant applications meet
the requirements of the risk evaluation DIN EN ISO 14121-1
and also comply with any further standards and regulations applying
to the intended use. This is the duty of the system manufacturer
and the user.
Maintenance
Maintenance is limited to the regular test of the holding force as
prescribed above.
The SITEMA - Locking Unit KFH is a safety element. Any repair
or refurbishing must be carried out by SITEMA. SITEMA cannot
take any responsibility for repairs by another party.
