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Auxiliary Fuel Pump Relay

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Overview

The AFPR is a "Smart" Auxiliary Fuel Pump Relay. This device allows the pilot to flip one switch and quickly drain the contents of the auxiliary fuel tank without over stressing the auxiliary fuel pump. The AFPR will pump down the auxiliary fuel tank, and then automatically shut the fuel pump off when no fuel is detected. The AFPR optionally includes a very reliable optical fuel sensor that can be easily installed in the auxiliary fuel tank or in the fuel line. The AFPR can be operated in and one of four modes of operation. The AFPR also has an output that can be used for a light to indicate when the fuel pump-down has been completed.

EASY INSTALLATION
The APFR was designed to mount near the fuel pump/auxiliary fuel tank. This eliminates running extra wires thru the wing or fuselage. This mounting method also allows the installer to use a shorter run for the fuel level sensor wiring and not use additional wiring through the wing. The AFPR can also be installed in the fuselage if limited space is a factor.
   
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WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Features

  • Smart Operation
  • Automatic fuel pump shutoff
  • Easy Installation
  • Several modes of operation
  • Operate with or without a fuel sensor
  • New design minimizes wiring
  • Reliable optical fuel sensor (optional)
  • Pump-down completed signal
  • Sloshing fuel will not affect operation

Specifications

  • Input Power: 12Vdc or 24Vdc, 0.1A max.
  • Enclosure: 3.5" x 2.25 x 1.25" (89mm x 57 x 32mm )
  • Fuel Sensor Mounting Hole: 0.475" (12mm)
  • Weight: 3.0oz. (93g), 3.3oz. (103g) with sensor
  • Pump & Pump-Down Outputs: 8A max.
  • Models: AFPR (includes sensor)
  • AFPR-ns (without sensor)

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Reviews

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Installed and tested! Installation instructions are easy to follow and the device works as advertised. I installed the sensor in a T-fitting between the pump and the main tank. The device has about a 4 second delay between sensing no fuel and shutting down which works well for my application.

Dan B
March 12, 2017

Q&A

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Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Is the sensor threaded?

We have added the Product Brochure PDF to the Documents tab on the web page. Please download and review it as it provides a clearer description of the connection and installation details.

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