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The outer diameter of the cable must be suited to the inner diameter of the cable con-
nector strain relief to ensure that a reliable degree of strain relief is maintained. Always
secure the D-Sub connectors to the workstation mating connectors via the two screws lo-
cated on both sides.
Warning
Never connect or disconnect the communication cables while power is
applied at either end of the cable. This may result in an incendiary spark.
Permanent damage to the workstation communication components may
occur.
Operation and Maintenance
The systems have been designed to comply with relevant spark ignition tests. However,
the workstation front panel membrane switches are the only make/break components in-
tended to be used by the operator in normal operation.
Warning
To maintain a safe condition, do
not
use an external keyboard or mouse
when the unit is operating in a hazardous environment.
Always observe the following rules with respect to hazardous location installations:
1.
Always install the workstations within an enclosure suitable for the specific applica-
tion. General-purpose enclosures may be acceptable for Class I applications, but are
never acceptable for Class II applications. Type 4 (IP 65) enclosures are recom-
mended even when not required by regulations.
2.
Keep enclosure doors or openings closed at all times to avoid the accumulation of
foreign matter inside the workstation.
3.
Never subject the unit to any installation or service procedures unless power is re-
moved and the area is non-hazardous. This includes installing or removing power
cables or communication cables, or removing the unit’s back cover.
4.
Only technically qualified service personnel should perform installation and service.
These workstations are designed to require no service in the course of normal opera-
tion by an operator.
