Operating instructions
GEFA / DOMINO valve AT 200F (ATEX II 1D/2DG c)
AT200F-ATEX-Betriebsanleitung (GB).doc (ZA) 21.09.2007
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Lubrication of valves with hand-wheel operation:
The spindle must always be kept well greased and free of dirt. The greasing points on the hand wheel bearing
must be regreased regularly depending on the conditions of operation and use.
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Valves with pneumatic or hydraulic operation:
The piston rod should be clean and free of dirt. A self-lubricating rod seal is used as standard with pneumatic
cylinders with damping. All the seals should be replaced if these cylinders leak.
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Electrically-operated valves:
The spindle must always be kept well greased and free of dirt. The greasing points on the actuator must be
checked. The respective instructions for use of the actuator manufacturer are binding.
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At every routine maintenance the antistatic device at the gate has to be tested regarding damages and has to
be replaced if damages were found.
Before starting up after maintenance or repair:
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Check that screw connections are tightly fitted.
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Ensure that all parts removed have been re-assembled.
Behavior after failure
After a break down (e.g. explosion) the valve has to be function-tested by suitably qualified personnel.
This is even valid if permitted limits (e.g. explosion pressure) were not reached.
It is recommended to let the manufacturer check the valve.
Final remarks
The details given here correspond to the latest state of our knowledge and, in connection with the technical
documentation, the purpose of providing information about our products and their range of applications.
They are not meant to guarantee particular features of the products or their suitability for specific applications.
Any existing copyrights and patent rights must be taken into consideration. We guarantee the quality within the
scope of our terms and conditions of sale.
We reserve the right to make changes and improvements.
status: 2007-09-21
