Bennett 3000 Series - Preparing Field Wiring; Pre-Installation Checks

Bennett 3000 Spec 300 Series Instruction Manual Preliminary Install Information
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9. The power for the motors in 1-HP self-contained standard pumps MUST BE located on the opposite phase from the dispenser
electronic power or be connected at 230V. This is necessary to limit the electronic noise from feeding back into the dispenser’s
electronic power. Failure to observe this will create problems with the operation of the dispenser’s computers. Note: If 230v motor
power is used, be sure to set the motor switch located on the motor to the high voltage setting by moving the switch to the high
position. Note: 2 HP Big Fueler motors do not have an adjustment switch. They must be wired for 230VAC 1 phase, or 380VAC 3
phase.
WARNING: DO NOT CROSS PHASE THE DISPENSERS OR DAMAGE WILL OCCUR. When installing more than
one dispenser the remote sub-pump relay control wire from each dispenser must be on the
same phase of power or cross phasing will occur at the sub-pump relay. This means that the
electronic power for all dispensers at the site must be on the same phase.
ELECTRICAL CONDUITS
Make sure that each dispenser has its own electrical underground conduit. Wiring from multiple dispensers in a single conduit is not
allowed. All underground conduit should be rigid metal and drawn up tight. The use of PVC (plastic) conduit is not allowed and may void
the Bennett Warranty. Make sure that vapor “seal offs” are properly installed on all conduits at and from each dispenser. Make sure any
intercom wiring is not run with dispenser field wiring. A separate (second) conduit must be run if using an intercom at the dispenser.
PREPARING FIELD WIRING
The dispenser’s field wiring connections are in the upper electronics head (electrical enclosure) of the dispenser or in the lower area of
the dispenser if the unit was ordered with the optional explosion proof junction box. Pull 72” (182.9 cm) extra wire to reach the top of
the dispenser. Note: All field wiring must be stranded copper, oil and gas resistant (THHN) color coded, with a 600-volt insulation rating.
See wiring diagrams for proper wire sizes. DO NOT use wire nuts. The ends of the wires should be clean and free from oxidation
1. Using the door keys shipped with the dispenser, (on side 1) unlock the two locks on the lower door and/or upper door panel of the
electronics enclosure, and open the door.
2. Pull the dispenser wires through the underground conduit and through the primary or optional secondary conduit locations located
on the vapor deck and terminate wires according to the wiring diagrams provided in the upper electronic enclosure.
3. If there is an optional junction box, follow the wiring diagrams provided in the upper electronics enclosure and wire to the terminal
strip and flying leads in the junction box.
4. Make sure that the copper ends of the wires are clean and free of oxidation.
BEFORE INSTALLING OR SERVICING A BENNETT DISPENSER, CHECK THE FOLLOWING:
WARNING: Failure to properly ground the equipment can cause injury or damage to the equipment and will void the
Bennett Limited Warranty.
WARNING: Absolutely no daisy chaining communication data wires, orange and yellow 18AWG. Damage to the control
console may result.
1. Make sure all dispensers are correctly grounded with 12-gauge wire.
2. Ensure that the electronic power is on a dedicated circuit breaker (customer supplied). Each dispenser uses one 120/240VAC, 50/60
Hz circuit for dispenser power. THE INTRINSIC SAFETY GROUND WIRE MUST BE FIRMLY MOUNTED TO THE DISPENSER CHASSIS TO
INSURE INTRINSIC SAFETY!
3. When installing more than one dispenser the remote sub-pump relay control wire from each dispenser MUST BE on the same phase
of power or cross phasing, will occur at the sub-pump relay.
IF ANY DEVIATION FROM THE ABOVE IS FOUND, CORRECT THE PROBLEM BEFORE PROCEEDING.