Decommissioning And Disassembly; Decommissioning; Removing The Positioner; Disposal - Samson 3725 Mounting And Operating Instructions

Decommissioning and disassembly

10 Decommissioning and disas-
sembly
DANGER
!
Risk of fatal injury due to ineffective explo-
sion protection.
The explosion protection becomes ineffective
when the positioner cover is opened.
The following regulations apply to installa-
tion in hazardous areas: EN 60079-14
(VDE 0165, Part 1).
NOTICE
!
The process is disturbed by interrupting
closed-loop control.
Do not mount or service the positioner while
the process is running and only after isolat-
ing the plant by closing the shut-off valves.

10.1 Decommissioning

To decommission the positioner before re-
moving it, proceed as follows:
1. Disconnect and lock the air supply and
signal pressure.
2. Open the positioner cover and discon-
nect the wires for the control signal.
66

10.2 Removing the positioner

1. Disconnect the wires for the control sig-
nal from the positioner.
2. Disconnect the lines for supply air and
signal pressure (not required for direct
attachment using a connection block).
3. To remove the positioner, loosen the three
fastening screws on the positioner.

10.3 Disposal

Î Observe local, national, and internation-
al refuse regulations.
Î Do not dispose of components, lubri-
cants, and hazardous substances togeth-
er with your other household waste.
EB 8394 EN