Distillation Process Analyzer DPA-4.5
Safety
Opening the control box
WARNING
Danger of explosion due to open sources of
ignition
The control box contains ignition sources. Opening
in potentially explosive atmospheres can cause
explosions.
– Before opening, ensure that no potentially
explosive atmosphere is present.
– Obtain approval from the operator before
opening the box when the power supply is
switched on.
– If there is a potentially explosive atmosphere
present, disconnect the power supply of the
device and wait five minutes before opening.
In addition to the device’s power supply, all
external voltages of signal and control lines
must also be free of voltage.
– When work has been concluded, close the box
firmly and switch on the pressure monitor again
with the
Explosion protection
key switch.
Flame arresters for Ex d box
WARNING
Danger of explosions due to incorrectly
mounted flame arresters
The Ex d box does not provide any explosion
protection if the flame arresters are mounted
incorrectly.
For this reason:
– Make sure that all three flame filters are in use.
– Assemble the flame arresters precisely according
to the instructions.
Electrostatic discharge
WARNING
Danger of explosions due to electrostatic
discharge
Electrostatic discharges can cause sparks and
ignite potentially explosive atmospheres.
– Never clean plastic parts on the device, in
particular the touchscreen, with a dry cloth.
Always use a moist cloth.
40
December 2013