Ac Power Installation; Connecting Pump Motor Power For Remote Dispensers - Bennett 3700 Series Installation Manual

Commercial and retail dispensers. spec. 100 (2nd generation). remote dispensers and self-contained pumps

Hide thumbs Also See for 3700 Series:

Service manual (88 pages)

Table of Contents

Each remote dispenser uses one 115V, 50/60 Hz or 230V, 50/60 Hz circuit for dispenser power. Make

sure the power source has the correct frequency and voltage. Connect the electrical circuit to the

terminal strip on the power / CPU board. Only one dispenser electronics Hot and Neutral needs to be

pulled per dispenser. That power will be connected from Control Board to Control Board in the

electronics head (at the factory) if there is more than one Control Board in the dispenser. Refer to the

Remote Power Wiring Diagram in the Wiring Section of this manual.

All references to 115VAC in this manual can also be identified as 230VAC if the dispenser ordered is for

230 VAC. Note: 115VAC installations: L1 is hot and L2 is Neutral. In 230VAC installations: L1 is hot

and L2 is the other phase hot.

Electronic Power Connections:

1. Connect the White (Neutral) 14ga. wire in 115V circuits or the Red 14ga. wire in 230V circuits to

TS2 Terminal 1 on the CPU Board.

2. Connect the Black (Hot) 14ga. wire to TS2 Terminal 2 on the CPU Board.

3. Electronic power must be connected to a dedicated 15 amp. circuit breaker. Electronic power for all

dispensers at an installation must be wired to the same AC line phase or damage from cross

phasing will result in the remote sub-pump relay control circuits.

Rules to ensure proper operation:

1. Each remote dispenser uses one 115V, 50/60 Hz or 230V, 50/60 Hz circuit for dispenser power. Put

no more than two (2) dispensers on a circuit breaker (for Electronic Power).

2. Do not connect any other devices or motors to these circuits.

3. Put the pump wiring in its own separate conduit. Do not put non-pump related wires, such as price

signs or intercoms, in the same conduit as pump wiring.

4. Use only 14-gauge stranded gas and oil resistant THHN wire.

5. Do not use wire nuts from the breaker panel to the dispenser.

WARNING: All Dispenser AC Power circuits (for Remotes only) must be on the same phase or

damage will result to the dispenser power board or the sub-pump relay box.

Connecting Pump Motor Power for Remote Dispensers

Connecting the Sub Pump Control Wiring for Remote Dispensers

Remote dispensers require the use of submerged pumps. These pumps are located in the Underground

Storage Tank and are controlled by a "control relay". The dispenser sends the signal to the control relay

to energize the submerged pump. Red Jacket and F.E. Petro are two of the most common manufactur-

ers of submerged pumps. Check with those manufacturers for more information on control relay boxes.

Connect the "Motor Out" power wires between the dispenser and the control relay box for each product

as follows:

Submerged Pump Motor Control - Connect to terminal 3 of TS2 on the CPU/Control board on side 1

of the dispenser. This should be a 14 ga. wire. If there is another CPU/Control board for this SAME

PRODUCT, install a jumper wire between terminal 3 of TS2 of both boards. This allows terminal 3 of

both boards to control the same submerged pump relay for that product. This should be a 14 ga. wire

also. It is recommended that for Product "A" the Installer use a Blue wire for submerged pump motor

control and if there is a second product (Product "B") use a Brown wire for submerged pump motor con-

trol. Refer to the Remote Power Wiring Diagram section of this manual.

Note - Select Submerged Pump control or Suction Pump control by setting a jumper wire on the CPU.

Make sure that there IS a jumper from P1 to P2 on the CPU if the dispenser is controlling a submerged

pump relay. This will be set at the factory.