EB 8355-2 EN
9-1
Malfunction
8
Malfunction
Risk of fatal injury due to the ignition of an
explosive atmosphere.
Î
Observe EN 60079-14 (VDE 0165,
Part 1) for work on the positioner in haz
-
ardous areas.
Î
Work in hazardous areas must only be
performed by personnel who has under-
gone special training or instructions or
who is authorized to work on explo-
sion-protected devices in hazardous ar-
eas.
Crush hazard arising from moving parts on
the valve.
Î
Do not touch any moving valve parts
while the control valve is in operation.
Î
Before performing any mounting or in-
stallation work on the positioner, put the
control valve out of operation by discon-
necting and locking the supply air and
control signal.
Î
Do not impede the movement of the actu-
ator and plug stem by inserting objects
into the yoke.
8.1
Troubleshooting
Î
See Table 8-1
Contact SAMSON's After-sales Service for
malfunctions not listed in the table.
8.2
Emergency action
Upon failure of the air supply or electric sig-
nal, the positioner vents the actuator, causing
the valve to move to the fail-safe position de-
termined by the actuator.
Emergency action in the event of valve or ac-
tuator failure is described in the associated
valve and actuator documentation.
Î
Plant operators are responsible for emer-
gency action to be taken in the plant.
DANGER
!
WARNING
!
Note
Tip
Содержание 3767
Страница 10: ...1 6 EB 8355 2 EN...
Страница 14: ...2 4 EB 8355 2 EN...
Страница 58: ...6 2 EB 8355 2 EN...
Страница 60: ...7 2 EB 8355 2 EN...
Страница 70: ...10 2 EB 8355 2 EN...
Страница 72: ...11 2 EB 8355 2 EN...
Страница 74: ...12 2 EB 8355 2 EN...
Страница 76: ...13 2 EB 8355 2 EN...
Страница 78: ...14 2 EB 8355 2 EN...
Страница 79: ...EB 8355 2 EN 14 3...
Страница 80: ...14 4 EB 8355 2 EN...
Страница 81: ...EB 8355 2 EN 14 5...
Страница 88: ...14 12 EB 8355 2 EN...
Страница 89: ...EB 8355 2 EN 14 13...
Страница 90: ...14 14 EB 8355 2 EN...
Страница 91: ...EB 8355 2 EN 14 15...
Страница 92: ...14 16 EB 8355 2 EN...
Страница 93: ...EB 8355 2 EN 14 17...
Страница 94: ...14 18 EB 8355 2 EN...
Страница 95: ...EB 8355 2 EN 14 19...
Страница 96: ...14 20 EB 8355 2 EN...
Страница 97: ...EB 8355 2 EN 14 21...
Страница 98: ...14 22 EB 8355 2 EN...
Страница 99: ...EB 8355 2 EN 14 23...
Страница 100: ...14 24 EB 8355 2 EN...
Страница 101: ...EB 8355 2 EN 14 25...
Страница 102: ...14 26 EB 8355 2 EN...
Страница 103: ...EB 8355 2 EN 14 27...
Страница 104: ...14 28 EB 8355 2 EN...
Страница 109: ......
Страница 110: ...2 EB 8355 2 EN...
Страница 111: ...EB 8355 2 EN 3...