Samson 3767 - Notes on Possible Property Damage

1-4 EB 8355-2 EN
Safety instructions and measures
WARNING
!
Intrinsic safety rendered ineffective in intrinsically safe devices.
Every time the positioner is operated, even not within the plant (e.g. during mainte-
nance, calibration and work on equipment), it must be ensured that the conditions for
intrinsically safe circuits are observed.
Î Only connect intrinsically safe devices intended for use in intrinsically safe circuits to
certiedintrinsicallysafeinput-connectedunits.
Î Do not place intrinsically safe devices back into operation that were connected to in-
trinsicallysafeinput-connectedunitswithoutcertication.
Î DonotexceedthemaximumpermissibleelectricvaluesspeciedintheECtypeex-
aminationcerticateswheninterconnectingintrinsicallysafeelectricalequipment(U
i
or U
0
, l
i
or I
0
, P
i
or P
0
, C
i
or C
0
and L
i
or L
0
).
1.3 Notes on possible property damage
NOTICE
!
An incorrect electric signal will damage the positioner.
A current source must be used to power the positioner.
Î Only use a current source and never a voltage source.
Incorrect assignment of the terminals will damage the positioner and will lead to mal-
function.
For the positioner to function properly, the prescribed terminal assignment must be ob-
served.
Î Connect the electrical wiring to the positioner according to the prescribed terminal
assignment.
Risk of malfunction due to failure to comply with air quality requirements.
Î Only use supply air that is dry and free of oil and dust.
Î Read the maintenance instructions for upstream pressure reducing stations.
Î Blow through all air pipes and hoses thoroughly before connecting them.