Operation - Samson 4749 Mounting And Operating Instructions

8 Operation

The work described in this section is only to be performed by personnel appropriately quali-
fied to carry out such tasks.
DANGER
!
Risk of fatal injury due to the ignition of an explosive atmosphere.
Î Installation, operation or maintenance of the position transmitter must only be performed
by personnel with qualifications according to Clause 4.5 of IEC 60079-14 who has un-
dergone special training or instructions or who is authorized to work on explosion-pro-
tected devices in hazardous areas.
DANGER
!
Loss of the explosion protection due to damage to the cover's thread and/or the connect-
ing thread.
Î Do not open devices with flameproof enclosures while they are energized.
WARNING
!
Opening the position transmitter in potentially explosive dust atmospheres will render the
explosion protection unsafe.
Î Do not open the enclosure cover of the position transmitter in potentially explosive dust
atmospheres.
The position transmitter converts the linear or rotary motion of a control valve into a
corresponding electric signal as soon as it is connected to the power supply.
Î Put the control valve into operation by switching on the signal pressure and electrical
supply.
EB 4749 EN
Operation
8-1