GEA Aseptomag GD, Operating Instruction

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2 Safety
2.1 Intended use
Aseptic counter pressure valves are stroke valves and are used to control a
predefined pressure in aseptic process systems. The desired product pressure is
achieved by supplying compressed air into the pneumatic actuator. A welded
stainless steel bellows (or PTFE bellows as an option) is used to hermetically
seal the valve disc. Selected sealing materials in the product chamber ensure
optimum tightness. The valve offers a high degree of process reliability and
product quality in aseptic working processes.
Pressure hammers and excessive control air pressures can destroy the bellows.
The control air pressure should therefore not exceed 8 bar and pressure
hammers in the system should be avoided.
The counterpressure valve (GD) should close against the direction of flow of the
medium if possible. Should this not be possible due to technical reasons related
to the plant or process, the valve must be depressurized. Both measures prevent
pressure hammers when the valve is switched. Furthermore, counterpressure
valves must be put into a defined end position (open or closed) to protect the
bellow during CIP/SIP processes. The valve is monitored, controlled and
operated by the customer's system.
Hint!
The manufacturer will not accept any liability for damage resulting
from any use of the valve which is not in accordance with the
designated use of the valve. The risk of such misuse lies entirely with
the operator of the facility.
2.1.1 Requirements for operation
The prerequisite for reliable and safe operation of the component is proper
transportation and storage as well as professional installation and assembly.
Operating the unit within the limits of its designated use also involves adhering to
the operating, inspection and maintenance instructions.
2.1.2 Pressure equipment directive
The valve is a piece of pressure equipment (without safety function) as defined in
the Pressure Equipment Directive: Directive 2014/68/EG. It is classified according
to Annex II, article 4, section 3. In the event of any deviations, GEA Aseptomag
AG will supply a specific Declaration of Conformity.
2.1.3 ATEX directive
Aseptomag
®
valve technology can also be used in ATEX protected areas.
However, the suitability of the component must be checked under consideration
of the respective conditions. Additional information will be made available upon
request.
2.1.4 Improper operating conditions
Safety
Intended use
430BAL012727EN_1
8 03.01.2018