Safety Instructions; General Precaution; Special Safety Instructions For The Plant Operator; Special Hazards - Mankenberg EB 1.12 ATEX Originalbetriebsanleitung

Original operating manual
Bleeding and Venting Valves EB 1.12 ATEX

4 Safety instructions

4.1 General precaution

The same safety regulations apply to a fitting as to the system into which it is installed. These instructions only
give those safety recommendations that have to be additionally observed for the fitting.

4.2 Special safety instructions for the plant operator

The following requirements for the intended use of a fitting are not the responsibility of the manufacturer but
have to be guaranteed by the user:
» The fitting may only be employed for the purpose described in section Intended use [} 6].
» Only competent specialist personnel may install, operate and service the fitting. Competent as defined in
these instructions refers to persons who, because of their training, specialist knowledge and professional
experience, are capable of correctly assessing and properly executing the work with which they are
entrusted and of recognizing and rectifying hazards.
» The pipeline system must be properly designed and installed so that the fitting can be mounted and
operated without any tension.
» The fitting and the bleeding pipe must be properly installed in the correct mounting position. The bleeding/
venting pipe must be adequately dimensioned and discharge into a pressureless surrounding.
» The usual flow rates should not be exceeded in the pipeline section during continuous operation, and
abnormal operating conditions such as vibrations, water shocks and cavitation should be avoided or – if
unavoidable – clarified with the manufacturer in advance.
» The prevailing operating conditions must comply with the limits of the design data stated in the
MANKENBERG order confirmation.
» Only operate the device at a steady system liquid level. The float must not "jitter". Rough and/or foaming
surfaces cause functional faults of the device.
» For strongly impurified systems, adequate bleeding and venting valves are to be installed (e.g. EB 1.11, EB
1.84, EB 1.85).
» The corrosion protection for the fitting must be adapted to the local environmental conditions.
Detailed notes are provided on some of these prerequisites in the following sections.

4.3 Special hazards

Before a fitting is removed from the system or before a fitting is dismantled but partially
remains in place, the pressure in the system on both the inlet and outlet side must be
completely reduced so that there is no uncontrolled flow of the medium out of the system.
danger of
In the case of toxic or hazardous media, the system must be completely drained before the
fatalities
fitting is removed.
Caution is required with residues that might continue flowing..
If a fitting is removed from a system with a toxic medium and is taken out of the plant:
the valve must be properly decontaminated before repair.
caution
EB 1.12 ATEX-4.X.222 Issue 26.07.2022
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