Samson 3321 - Notes on Possible Personal Injury

8 EB 8111/8112 EN
Safety instructions and measures
DANGER
!
Risk of electric shock.
Î Do not remove any covers to perform adjustment work on live parts.
Î Before performing any work on the device and before opening the device, discon-
nect the power supply and protect it against unintentional reconnection.
Î Only use power interruption devices that are protected against unintentional recon-
nection of the power supply.
1.2 Notes on possible personal injury
WARNING
!
Crush hazard arising from moving parts.
The control valve contains moving parts (actuator and plug stems), which can injure
hands or ngers if inserted into the valve.
Î Do not insert hands or nger into the yoke while the valve is in operation.
Î While working on the control valve, disconnect and lock the pneumatic air supply as
well as the control signal.
Risk of personal injury when the pneumatic actuator vents.
While the valve is operating, the Type3371 Actuator may vent during closed-loop con-
trol or when the valve opens or closes.
Î Install the control valve in such a way that the actuator does not vent at eye level.
Î Use suitable silencers and vent plugs.
Î Wear eye protection when working in close proximity to the control valve.
Risk of personal injury due to preloaded springs.
Valves in combination with pneumatic actuators with preloaded springs are under ten-
sion. These control valves with SAMSON pneumatic actuators can be identied by the
long bolts protruding from the bottom of the actuator.
Î Before starting any work on the actuator, relieve the compression from the preload-
ed springs (see associated actuator documentation).