Samson 3271, Original Instructions Manual, Page: 29 / 72

EB 8310-6 EN 5-1
Mounting and assembly
5 Mounting and assembly
The work described in this section is only to
be performed by personnel qualified for the
assignment accordingly.
5.1 Preparation for installation
Before mounting, make sure the following
conditions are met:
− The actuator is not damaged.
− The type designation, material and tem-
perature range of the actuator match the
ambient conditions (temperatures etc.).
See the 'Markings on the device' section
for nameplate details.
Proceed as follows:
Î
Lay out the necessary material and tools
to have them ready during mounting.
Î
Check that the vent plugs to be used are
not blocked.
Î
Check any pressure gauges mounted on
valve accessories to make sure they func-
tion properly.
Î
When the valve and actuator are al-
ready assembled, check the tightening
torques of the bolted joints (u AB 0100).
Components may loosen during trans-
port.
5.2 Mounting the device
Depending on the version, SAMSON control
valves are either delivered with the actuator
already mounted on the valve or the valve
and actuator are delivered separately. When
delivered separately, the valve and actuator
must be assembled together on site. Proceed
as follows to mount the actuator and before
start-up.
Risk of personal injury due to exhaust air
being vented.
The actuator is operated with air. As a result,
air is vented during operation.
Î
During mounting make sure that vent
holes are not located at eye level in the
work position of the control valve and the
actuator does not vent at eye level in the
work position.
Î
Wear eye and hearing protection when
working near the actuator.
Crush hazard arising from the moving actu-
ator stem.
Î
Do not touch the actuator stem or insert
hands or finger into the yoke while the
air supply is connected to the actuator.
Î
Before working on the actuator, discon-
nect and lock the pneumatic air supply
as well as the control signal.
Î
Do not impede the movement of the actu-
ator stem by inserting objects into the
yoke.
Î
Before unblocking the actuator stem after
it has become blocked (e.g. due to
seizing up after remaining in the same
position for a long time), release any
stored energy in the actuator (e.g. spring
compression). See 'Relieving the spring
compression in the actuator' in the
'Removal' section.
WARNING ! WARNING !
WARNING ! WARNING !