Veeder-Root TLS-50 Series, Руководство пользователя

Страница: 10 / 76

Site Considerations Probe Wiring Safety Issues
5
Probe Wiring Safety Issues
Wiring between the console and the probes is of limited electrical power so that there is insufficient energy to
ignite fuel. In the console, the low power probe wiring is considered intrinsically safe because it is physically
isolated from all high power wiring. To maintain the integrity of this safety feature probe wiring can not share the
same conduit with power wiring. In addition, probe cables can only enter the console through the designated
intrinsically safe area knockouts.
If the TLS-50 System is being retrofitted into a paved site, you can cut grooves in the pavement, run direct burial
cable to the probes, and then seal over the cable grooves, subject to approval of the local authority having
jurisdiction.
Before trenching, you should diagram all conduit runs between the console’s intended location and its deployed
probes. Your site diagram will help you calculate conduit and wiring lengths, and necessary quantities of junction
boxes, sealing boxes, clamps, brackets, etc.
Throughout this planning process and in the actual installation, you must follow all latest National Electric Codes,
and applicable federal, state, and local codes as regards conduit type, depth below grade, sealing, grounding,
wire capacities, direct burial (if permitted), etc.
Selecting a Console Location
WARNING
Probes operate in areas where flammable liquids and explosive vapors may be
present.
Improper installation may result in fire or explosion causing serious injury or
death.
Practice the following:
1. Read thoroughly and follow the instructions shipped with each probe.
2. Probe wiring must enter the console only through their designated areas.
3. Power wires and conduit must not enter the intrinsically safe
compartment of the console.
4. Substitution of components may impair intrinsic safety.
WARNING
Explosive vapors or flammable liquids could be present near locations where
fuels are stored or being dispensed. The TLS-50 Console is not explosion
proof.
An explosion or fire resulting in serious injury or death, property loss and
equipment damage could occur if the console is installed in a volatile,
combustible or explosive atmosphere (Class I, Division 1 or 2).
Do not install this console in a volatile, combustible, or explosive atmosphere.