Samson 2780-1, Монтаж и эксплуатация, Страница: 23 / 52

EB 5840 EN 5-1
Mounting
5 Mounting
The work described in this section is only to
be performed by personnel qualified for the
assignment accordingly.
5.1 Preparation for mounting
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 '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 actuator
SAMSON control valves are delivered ready
for use. In special cases, the valve and actu‑
ator are delivered separately and must be
assembled on site. Proceed as follows to
mount the actuator and prepare the 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 beneath the actuator
stem 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 seiz‑
ing up after remaining in the same posi‑
tion for a long time), release any stored
energy in the actuator (e.g. spring com‑
pression). See 'Relieving the spring com‑
pression in the actuator' in the 'Removal'
section.
WARNING ! WARNING !
WARNING ! WARNING !