Chapter Three - Installation
47
Operation and Maintenance
The systems have been designed for compliance with relevant spark ignition tests. How-
ever, please note that the workstation front panel contrast adjustment tactile switches and
keyboard connector are the only make/break components intended to be exercised by the
operator in the course of normal operation.
Warning
To maintain a safe condition, never use an external keyboard or mouse or
USB port devices 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.
If present, keep enclosure doors or openings closed at all times, to avoid the accu-
mulation 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 known to be non-hazardous. This includes the installation or
removal of power cables, communication cables, or removal of the rear cover of the
unit.
Only technically qualified service personnel should perform all installation and service.
These workstations are designed to require no service in the course of normal operation
by an operator.
Safety Agency Approval
The Xycom Automation systems are designed to meet the following standards:
•
Underwriters Laboratories Inc., UL 1604 Standard for Safety
Electrical equipment for use in Class I and Class II, Division 2, locations
•
Underwriters Laboratories Inc., UL 1950, Information Technology Equipment
•
Canadian Standard Association, Specification C22.2 No. 213-M1987
Non-incendiary electrical equipment for use in Class I, Division 2 hazardous loca-
tions
•
Canadian Standards Association, Specification C22.2 No. 950
Information Technology Equipment
•
EN 60950, Information Technology Equipment