Special Hazards - GF PA30 Bedienungsanleitung

Warning
Warning
3
The operator must make certain in particular that
• the valve with pneumatic actuator is only used as
it was intended for (see Section 3),
• the design parameters control air pressure and
voltage of electric subassemblies of the pneumatic
actuator, as indicated in the scope of order
and delivery, are true and accurate,
• the pneumatic actuator is only operated when
in perfect working condition and the safety devices
for the system supply of compressed air are
regularly checked to make sure they are in perfect
order,
• only qualifi ed and authorized personnel plan,
connect, and work with the actuator and that
employees are instructed periodically in job
safety matters according to the local regulations
– especially as pertaining to electrical equipment,
and
• personnel is familiar with and observes this in
struction manual and the information contained
herein.

5.2 Special hazards

Single acting, fail-safe OPEN and CLOSE (type
description FO and FC) pneumatic actuators have
pre-loaded springs that bring the valve into the
predefi ned position in case of compressed air loss.
Dismantling these actuators is dangerous and may
only be done by following special repair instructions
(avail able from GF Piping Systems!) and under the
guidance of a safety expert. Dismounting from the
valve may only be done in the safety position after
cutting off the compressed air supply.
Prior to any work on the electric subassemblies of
the pneumatic actuator, the electrical connections of
the control voltage should be disconnected.