Cardinal ARMOR, Installation Manual

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0330-0410-0M Rev D
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Portable Digital Truck Scale
5
Safety Considerations
Safety must be a consideration in the selection of a location for your weighing system.
DO NOT locate your system in an area where flammable or explosive materials are stored or
processed unless your equipment is furnished in special explosive-proof enclosures. The
equipment should be placed where it does not interfere with entry to or exit from the room.
Periodic reviews should be made to make certain that the installation remains safe.
Lightning Protection
In areas subject to lightning strikes, certain steps must be taken by the customer to minimize
the potential for lightning damage. These steps consist of the installation of lightning arresters
as required by Article 280 of The National Electrical Code, the installation of a scale grounding
system as described in Grounding Installation Instructions, and other surge arresting devices.
Heating and Cooling
Most standard Cardinal weighing system instrumentations are designed for the office
environment. Such an environment is free of excessive dust and moisture and provides a
comfortable temperature. In general, weighing equipment will perform well over a temperature
range of 14° to 104° F. Some types of instruments and special systems will perform over a
much wider range of temperatures.
In order to keep equipment cooling requirements to a minimum, the equipment should be
placed out of direct sunlight and in an area where air is free to flow around all sides of the
system enclosure(s). Make certain that the enclosure is not in line with a heating or cooling
vent. Such a location will subject the instrument to sudden temperature excursions and may
result in an unstable weight reading.
Care should be exercised by providing a relatively dust-free environment for operation of the
printer. Accumulations of dust and dirt within the printer act as abrasives; also as insulators
that reduce the dissipation of heat from internal components. Accumulated dust and dirt can
result in premature failure.
Scale Site
The site selected for installation of the scale should provide easy access, satisfactory soil
bearing capacities, adequate drainage, and be within sight of the system operator. Refer to the
foundation or pit drawings furnished for soil bearing requirements.
A common source of problems is the accumulation of water under and around the scale. In
spite of the best water proofing techniques, prolonged exposure to water will result in erratic
weight readings and may permanently damage the scale. In areas subject to water
accumulation, an inexpensive alternative is to install a sump pump to remove excess water.
Remember that power wiring for the sump pump must be contained in a conduit apart from the
load cell conduit and separated from it a minimum of 24 inches.