LC1000 INSTRUCTION MANUAL WIRING
PAGE 23
CAUTION
Sensors connected to the LC1000 are usually installed in explosion hazard areas
typical of hydrocarbon fuel tanks. For these applications, it is CRITICAL that
electrical conduit and wiring be installed by qualified installers familiar with all
provisions of the National Electrical Code relating to equipment intended for use
in EXPLOSION HAZARD areas. The primary concern is to maintain physical
separation between intrinsically safe and non-intrinsically safe wiring by running
separate conduit attached to the control console at the designated knockouts.
ALL conduits carrying sensor wiring into the hazardous area MUST be fitted with
standard vapor seal-off fittings at all field junction boxes and again where the
conduit first enters the non-hazardous area. FAILURE TO COMPLY MAY RESULT
IN PERSONAL INJURY, PROPERTY LOSS AND EQUIPMENT DAMAGE.
3.2 SYSTEM WIRING
Figures 3-2 and 3-3 are typical System Wiring Diagrams that must be followed when running
conduit and wires between the HAZARDOUS TANK area and the NON-HAZARDOUS CONSOLE
area. This follows FM and other codes for proper installation.
SENSOR WIRING INSTALLATION. Refer to Figures 1-4 through 1-8 for console conduit
openings and specific sensors that will be wired into the LC1000 system. Install wiring as follows:
1. Install 1/2" rigid conduit from all sensor areas to the LC1000 console.
CAUTION
All sensor wiring from the LC1000 console may be run in the same conduit. NO
OTHER WIRING MAY BE RUN IN THESE CONDUITS. NEVER RUN POWER WIRES
IN THESE CONDUITS. FAILURE TO COMPLY MAY RESULT IN PERSONAL
INJURY, PROPERTY LOSS AND EQUIPMENT DAMAGE.
2. At appropriate locations along the conduit runs (see Figures 2-3 through 2-5 and/or
appropriate sensor Instruction Bulletins) install watertight couplings and approved VAPOR
SEAL-OFF fittings.
3. At each sensor location install a WATERTIGHT ELECTRICAL JUNCTION BOX. Allow
enough room around the sensor tank fitting for proper installation of the sensor and all
conduit/junction box fittings, and for later removal if necessary.
4. Attach the conduit at the LC1000 console ONLY to the 1/2" conduit knockout designated for
Intrinsically Safe wiring (see Figure 1-4). Use NEMA 4 fittings for outdoor locations.
To Next Page
Loading...
