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8 Installation
8.1 Assembly work preparations
Danger
96
Mortal danger from electric current
In potentially explosive environments, dangerous voltages can still remain as ig-
nition sources for up to one minute after being switched off.
•
Disconnect the device from the power supply before starting the mainte-
nance work.
•
Secure the device against being switched back on.
•
Cordon-off the work area of the device, e.g., using a barrier and signs.
•
After switching off the device, wait at least one minute before starting work.
Ensure that the device is voltage-free. Then connect to earth and
short-circuit.
Mortal danger from components under pressure
Flange joining elements, pressure tapping screw connections and valves must
not be removed if pressure is applied to the device. Components may be flung
around. Gas escaping may cause intoxication and burns. Risk of explosion!
•
Carry out work on the device only when it is in a voltage-free state, is vented
and without pressure.
Mortal danger from incorrect work
Hazards can only be recognized and avoided by specially trained personnel.
If work is carried out by persons who have not been trained for these special ac-
tivities in potentially explosive areas, they may cause an explosion.
•
Have installations only carried out by especially trained personnel, (expert
according to DIN VDE 0105, IEC 364 or similar national, standards).
Mortal danger from damaged sealing surfaces
If sealing surfaces are damaged, e.g., from notches or scratches, leaks may
occur. Risk of intoxication and explosion!
•
Install only an undamaged device
Manual USM GT400 · EN10 · May 2021
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