Mechanical And Plumbing Notes; Electrical Field Wiring - Bennett 3000 Series Installation & Operator's Manual

Mechanical and Plumbing Notes

For remote dispensers, a U.L. Listed Emergency Shut Off Valve is required for each product inlet. The
Emergency Shut Off Valve is sometimes referred to as an "Impact Valve", "Safety Valve", "Shear
Valve", "Crash Valve", or "Fire Valve". The Emergency Shut Off Valve must be supported by the island
frame or containment sump frame. Follow all instructions contained in the valve's installation manual
and observe all local codes.
Install an approved emergency Shut Off valve, designed to close automatically in the event of severe impact
or fire exposure, in the dispenser supply line at the base of the dispenser. The valve will also permit safe
inspection and maintenance. Follow the installation instructions for the valve being installed.
For self-contained (suction) pumps, a vertical check valve is required under each of the
pump's ground joint unions for the product inlet. The vertical check valve ensures that
the pump's hydraulic system remains full of product, and it is necessary to maintain the
"prime" of the suction line so that liquid product does not drain back to the tank. Follow all instructions
contained in the vertical check valve's installation manual and observe all local codes.
For above ground tank installations with suction pump units, a pressure regulating valve is required on
the product line.
Product inlet locations and dimensions are in the base foundation drawings in this manual.
Tighten the dispenser's ground joint union to leak free tightness. If rigid product inlet pipes are used,
they must be plumed to the proper position so that no strain is exerted on the dispenser chassis when
the ground joint union is tightened.
Find the wiring diagram specific to the dispenser model for the dispenser that you are working
on in the "Wiring Diagrams" section in the back of this manual. Read and follow all directions
including supplemental notes contained on the drawing.
The dispenser's wiring terminal strip for connection of the field wiring is in the ballast box (upper
"Head" ) of the dispenser. Remove the screws securing the top cover of the dispenser to access the
wiring terminal. Also, the dispenser has the option of being ordered with a junction box in the lower part
of the dispenser. If you have this option, you will wire to the terminal strip in the junction box the same
way you would have wired to the terminal strip in the head of the dispenser.
All field wiring must be Oil and gas resistant (THHN) color coded, with a 600 volt insulation rating. See
wiring manual for proper wire sizes. Pull 72" extra wire to reach the top of the dispenser. Do not use wire
nuts. The ends of the wires should be clean and free from oxidation.
No more than two dispensers per 15 amp breaker. All dispensers must be on the same phase of power.
Follow all local, state and federal requirements for installation of vapor seals.
Electrical contractors must pull 72" of wire above the grade level to reach through the dispenser's
conduit and into the ballast box area at the top of the dispenser. Read and follow all instructions on the
wiring diagram and observe all national and local electrical codes.
In instances where new dispensers are replacing old dispensers, Bennett recommends that new wiring
be pulled to each dispenser.
If existing wiring is to be used (not recommended) does not reach to the dispenser ballast area (top
area) of the dispenser, wire extension is allowed only if the connections are soldered and made weather
proof.

Electrical Field Wiring

15 107929 Rev E 04-24-17