5-1
EB 31a_EN
December 2022 edition
Subject to technical changes
Installation
5 Installation
The work described in this chapter may only be performed by
specialist personnel quali
fi
ed to perform the corresponding task.
5.1 Installation
conditions
Ensure the following conditions prior to assembly:
−
The actuator is not damaged.
−
The type, material and temperature range of the actuator
match the ambient conditions (temperatures, etc.). For details
about the type plate, see Chapter “2 Markings on the de-
vice”.
5.2
Preparing for assembly
Carry out the following preparation steps:
Ö
Get the material and tools ready that are required for assem-
bly.
Ö
Check that the optional vent plugs are not clogged.
Ö
In the case of attachments, check the pressure gauge for
proper function.
Ö
If the valve and actuator are already assembled together,
check the screw connections for the correct tightening tor-
ques. Components can loosen up during transport.
5.3 Assembling the device
Depending on the version, PFEIFFER valves are supplied with the
actuator and accessories already assembled on the valve.
The valve, actuator and accessories can also be supplied sepa-
rately. If supplied separately, the valve, actuator and accessories
must be assembled together at the installation site.
The tasks are listed below that are necessary for assembly and
prior to the commissioning.
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.
Ö
Depressurise the concerned plant parts and the actuator. Also
residual energy must be discharged.
DANGER
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.
Ö
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.
Ö
During assembly, make sure that ventilation openings are not
located at eye level on the operator level of the valve or venti-
late towards eyes on the operator level.
Ö
When working near the actuator, wear eye and hearing pro-
tection.
Danger of crushing due to moving actuator- and switching
shaft!
Ö
Before working on the actuator, interrupt and lock pneumatic
energy and the control signal.
Ö
Vent the actuator.
Ö
Do not allow the jamming of objects to hinder the operation
of the actuator- and switching shaft.
Ö
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”.
Damage to the actuator due to excessively high or low tighten-
ing torques!
The rotary actuator components must be tightened with speci
fi
c
torques. Excessively tightened components are subject to in-
creased wear. Components that are not suf
fi
ciently tightened can
cause the components to release.
Ö
Observe the tightening torques, see “Table 15-1: Tightening
torque of the end caps (13)“, “Table 15-4: Tightening torque
on the port (NAMUR)“, Table 15-5: Tightening torques on the
ISO connection” and “Table 15-6: Tightening torques on the
accessory connection“.
Damage to the actuator due to unsuitable tools!
Ö
Only use tools approved by PFEIFFER, see Figure 15-1 and
Table 15-8 in Chapter “15.1.3 Tools“.
Damage to the actuator due to unsuitable lubricants!
Ö
Only use lubricants approved by PFEIFFER, see Table 15-7 in
Chapter “15.1.2 Lubricants”.
WARNING
NOTE
Summary of Contents for EB 31a
Page 6: ...EB 31a_EN December 2022 edition Subject to technical changes Content...
Page 32: ...6 2 EB 31a_EN December 2022 edition Subject to technical changes Start up...
Page 34: ...7 2 EB 31a_EN December 2022 edition Subject to technical changes Operation...
Page 42: ...9 6 EB 31a_EN December 2022 edition Subject to technical changes Servicing...
Page 44: ...10 2 EB 31a_EN December 2022 edition Subject to technical changes Decommissioning...
Page 52: ...13 2 EB 31a_EN December 2022 edition Subject to technical changes Disposal...
Page 54: ...14 2 EB 31a_EN December 2022 edition Subject to technical changes Certificates...
Page 55: ...14 3 EB 31a_EN December 2022 edition Subject to technical changes Certificates...
Page 56: ...14 4 EB 31a_EN December 2022 edition Subject to technical changes Certificates...
Page 67: ...EB 31a_EN December 2022 edition Subject to technical changes...