FDS Troubleshooting

The Fuel Delivery System or FDS is a group of components used to move fuel from the tank to the dispenser shear valve. This in includes the STP or motor, PMA assembly, and STP or motor controller. Troubleshooting the components of the system in order will generally result in a successful repair.

Common FDS related issue are:

• Product down
• Intermittent slow flow
• Constant slow flow
• Line test failures

Troubleshoot the following devices in order.

Step 1: Motor controller

Step 2: Electrical properties of the UMP or motor

Step 3: Dispenser Hook Signals

Step 4: Hydraulic properties of the UMP or motor

Click the following links for the next steps:

Motor Controllers

STP Motors & PMA's