Improper Use; Standards And Technical Guidelines; Basic Safety Guidelines - Leser 4401 Instrucciones De Servicio

Operating Instructions

2.2 Improper Use

Safety valves must not be used improperly.
In the event of improper use, the manufac-
turer is no longer liable.
Seals must not be damaged or removed.
Changes may affect the operation and the
performance of the safety valve. The guar-
antee is voided. Moving and functionally
important parts must not be given a protec-
tive coating.
Safety valves – especially the actuator and
coupling – must not be blocked.
Safety valves shipped with transport secur-
ing devices are labelled with a red flag. Do
not commission the safety valve while it is
blocked. Prior to commissioning, modify
the test gag.
Levers on safety valves must not be used
as hangers for any objects. The position of
the lever must not be changed. No addi-
tional weight may be applied to the levers.
2.3 Standards and Technical
Guidelines
The safety valves are state of the art at the
time of delivery.
The following standards and regulations
must be observed when working with safe-
ty valves:
• TRD 421, 721,
• TRB 403,
• AD 2000 Merkblatt A2 and A4,
• DIN EN ISO 4126,
• Pressure Equipment Directive 97/23/EC
• ASME Code, Sections II and VIII,
• API 520, 526, 527,
• ATEX 100.
Other standards and regulations must be
observed depending on the use of the
safety valve.
The standards and technical guidelines
that are fulfilled by a specific type of safety
valve can be found in the declaration of
conformity.

2.4 Basic Safety Guidelines

DANGER
Changes to safety valves
Prohibited increases in pressure in the sys-
tem to be secured and functioning in con-
travention of the regulatory requirements
• Do not make any changes to the condi-
tion on delivery
Dangerous media
Poisoning, caustic burns and other burns,
injuries
• Use suitable protective devices
• Use suitable collecting tanks.
• Wear suitable protective equipment.
EN
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