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 fingers if inserted into the valve.
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Do not insert hands or finger into the yoke while the valve is in operation.
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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 identified 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).
Summary of Contents for 3321
Page 11: ...EB 8111 8112 EN 11 Safety instructions and measures...
Page 27: ...EB 8111 8112 EN 27 Measures...
Page 33: ...EB 8111 8112 EN 33 Mounting and start up...
Page 35: ...EB 8111 8112 EN 35 Operation...
Page 45: ...EB 8111 8112 EN 45 Servicing...
Page 53: ...EB 8111 8112 EN 53...
Page 55: ...EB 8111 8112 EN 55 15 11 12 16 2 5 1 4 13 17 14 63 62 5 2 8 Type 3321 DN 65 to 100 NPS 2 to 4...