Start-Up - Samson EB 31a Mounting And Operating Instructions

6

Start-up

The work described in this chapter may only be performed by
specialist personnel qualifi ed to perform the corresponding task.
DANGER
Risk of bursting due to improper opening of pressurised devic-
es and components!
Pneumatic rotary actuators are pressure equipment that can burst
if handled improperly. Projecting, fl ying components and frag-
ments can cause injuries or even death.
Before working on the actuator:
Depressurise the concerned plant parts and the actuator. Also
residual energy must be discharged.
WARNING
Danger of injury due to preloaded springs!
The rotary actuators are tensioned due to the compressed
springs. Furthermore, improper disassembly of the spring car-
tridge can lead to serious injuries.
Opening of the rotary actuator only according to the instruc-
tions, see Chapter "11.1 Releasing the spring tension in the
actuator".
Danger of injury due to escaping exhaust air!
The actuator is pneumatically operated, therefore exhaust air es-
capes after it is controlled.
When working near the actuator, wear eye and hearing pro-
tection.
Danger of crushing due to moving actuator- and switching
shaft!
Before working on the actuator, interrupt and lock pneumatic
energy and the control signal.
Vent the actuator.
Do not allow the jamming of objects to hinder the operation
of the actuator- and switching shaft.
If the actuator- and switching shaft are blocked (e.g. due to
"seizure" if not actuated for a long period of time"), release
the residual energy of the actuator (spring tension) before re-
leasing the blockage, see chapter "11.1 Releasing the spring
tension in the actuator".
Danger of injury due to incorrect operation, use or installation
caused by incorrect information on the actuator!
After performing adjustment or conversion work, the data on the
actuator type plate is no longer correct. This concerns, for exam-
ple, the direction of action and the schematic representation of
the direction of action and actuator function.
Immediately replace the signs or adhesives with incorrect/
outdated information.
Enter the newly adjusted values on the type plate, or request
a new type plate from PFEIFFER.
EB 31a_EN
December 2022 edition
Subject to technical changes
NOTE
Damage to the actuator due to excessively high or low tighten-
ing torques!
The rotary actuator components and additional equipment must
be tightened with specifi c torques. Excessively tightened compo-
nents are subject to increased wear. Components that are not suf-
fi ciently tightened can cause the components to release.
Comply with tightening torques, see Chapter "15.1.1 Tight-
ening torques".
Damage to the actuator due to unsuitable tools!
Unsuitable tools can damage the actuator.
Suitable tools are required to work on the actuator, see Figure
15-1 and Table 15-8 in Chapter "15.1.3 Tools".
Ensure the following conditions prior to commissioning/recom-
missioning:
In reference to the Machinery Directive 2006/46/EU, the ac-
tuators can be classifi ed as a "part of a machine". The com-
missioning of the actuator is also prohibited until the machine
and/or the fi nal system in which the actuator is installed ful-
fi ls the requirements of directive 2006/46/EU and with
which compliance is declared.
The actuators are designed, built and classifi ed in compliance
with ATEX Directive 2014/68/EU. Use in zones with a po-
tentially explosive atmosphere must comply with the classifi -
cation of the actuator and the ATEX safety regulations.
It is important that the actuator is used only within the limits
of use permitted by the technical specifi cations.
The actuator is installed properly on the valve, see Chapter
"5 Assembly".
The function tests have been completed successfully.
The current conditions in the concerned plant section corre-
spond to the design of the actuator, see Intended use in
Chapter "1 Safety instructions and safety measures".
Commissioning/recommissioning
Check the correct function of the actuator.
Start-up
6-1