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VSFC Site Installation Examples Installing a Pressure Transducer and an LS. Barrier in the STP DID Installing a Pressure Transducer and an I.S. Barrier in the STP For installations in which the Pressure Transducer and pump control wiring share the same conduit to the VSFC unit, a Veeder-Root Intrinsically Safe Barrier must be installed in the STP and be connected to the Pressure Transducer. These connections are discussed in the procedure below: 1. Reference Figure 6 and Figure 8 for installation examples. 2. Install Pressure Transducer (P/N 848480-001) as instructed in PLLD Transducer Installation Manual (P/N 576013-902) for the appropriate STP. 3. Remove the two contractor box covers (see Figure 6 or Figure 8) for cover locations on each style pump). 4. Inspect port's threads and hand clean with a wire brush if necessary. 5. Lubricate the o -ring of the I.S. barrier with petroleum jelly. DO NOT APPLY ANY THREAD SEALANT OR PIPE DOPE TO THE THREADS OF THE I.S. BARRIER OR TO THE THREADS OF THE STP'S CONTRACTOR o I BOX INTO WHICH IT IS INSTALLED. The metal -to -metal joint created by threads of the I.S. Barrier in the STP's contractor's box ensures a restricted flame path to prevent propagation of a spark or flame to a hazardous area. If any thread sealant or pipe dope is applied to the threads of the I.S. Barrier or to the threads of the contrator's box, the flame path may not be restricted, potentially resulting in serious injury or death from explosion. 6. Install the I.S. Barrier (P/N 332101-001). Do not use thread sealant. Torque the I.S. Barrier to 35 ft -lbs (50 N -m). 7. Pull the three wire cable (P/N 780-916-1) from the VSFC Master Unit into the STP's contractor box. In The Red Jacket VSFC pumps, the compression bushing (P/N 410301-001) and tubing kit (P/N 410370-001) is required with this cable. B. Connect the black, white, and green wires in the bottom of the I.S. Barrier to the black (-) red (+), and blue (ground) wires in the VSFC cable using wire nuts as shown in Figure 16. Use a wire nut to connect the cable's drain wire to the grounding wire attached to contractor's box. V -R 3 -conductor shielded cable (P/N 780-916-1) To VSFC Master Unit i Seal -off It F f� Rigid conduit Wire nuts (typ.) — (BLIP ® Black Ground (BLU) ® Green + (RED) ®White Drain - Ground Contractors box Figure 16. I.S. Barrier field wiring connections 9. Install and torque the contractor's box cover to 35 ft -lbs (50 N -m). 26 From I.S. Barrier redjacket/vsfc19.eps