EDC Stands for Electronic Devive Controller.  We call it that because it has many applications so we gave it a name that would cover them all.

There are several Reasons

• Safety.  By using our EDC Feedback in submersible control wiring can be eliminated. Feedback has caused personal injury and about 25% of printed circuit board failures.
• When Feedback is eliminated any dispenser can be serviced without shutting down an entire site.
• Onboard diagnostics can be used for troubleshooting without tools or meters.
• The EDC can be used to trouble shoot other equipment that may be connected to it.
• Simplifies OSHA Lockout Tagout and NFPA 30A servicing procedures.

Yes, UL File No. E100900, Auxiliary Devices, Motor Controllers, Pilot Duty.

Yes, our EDC eliminates the false "Pump On" signals at the line leak detection systems and simplifies LLD repairs.

Yes, the controllers for these pumps are sensitive and the pumps may not shut off.  Our EDC can eliminate this problem because of its isolation and ability to pull stray voltages down to a normal level and eliminate false "Pump On" signals in the submersible control wiring.

Yes, and some of the wiring needed for these systems can be simplified or incorporated into our EDC.

Yes, but you must add an external relay with a 120volt coil.  Then our EDC controls the coil and the contacts control the submersible motor starter.

No, dispenser manufactures do not include a means of isolation for submersible control wiring.   Dispenser manufacturers have simplified their equipment to keep prices down, and by doing this they have eliminated the relay boxes (used for isolation) that were included in earlier systems.

A relay is used to control each submersible pump, and that relay is controlled by the submersible control wire(s) from each dispenser.   None of this wiring is isolated.  To comply with the electrical code (NFPA 70 paragraph 514.13) relays can be used but the results are very dificult to service and it can be a rats nest of wiring!!

YES!   One dispenser is OK, but when there is more than one dispenser, feedback is created in the submersible control wiring.   Feedback will make any dispenser hot that is normally off if any other dispenser of the same product is turned on.

No. If you need a letter stating so click here.  Installation must comply with the National Electrical Code (NFPA 70).

No. But, if done correctly it can be done.  See the explaination here.