REV A 2020/10/15
877.582.3569
4
FT590 SERIES RACK TESTER MANUAL; 11266PA
Operation
1.
Disconnect the rack cord from any trailers. Verify the rack monitor is non-permissive.
2.
Connect the rack cord to the FT590 unit.
3.
Verify the rack monitor becomes permissive. This will typically be indicated by a green
light.
a.
If the rack monitor does not become permissive, this indicates the issue is likely
related to the terminal side equipment.
Make note of the lights shown on the front of the rack monitor as they may be
indicative of the failure point.
Refer to the rack monitor and junction box manuals for troubleshooting these
items.
4.
Optional: Using a dark colored cup filled with fuel oil or diesel, submerge the end of the
probe on the FT590
approximately 1” into the liquid
. Verify the rack monitor returns to
non-permissive.
5.
If the rack monitor performed as expected in steps 3 and 4, the rack monitor is working
correctly, and the failure is on the trailer overfill system.
Maintenance
The FT590 has few parts that will require regular maintenance. The socket may develop
oxidation or accumulate debris over time which may lead to poor connection to a rack cord. To
minimize oxidation and debris buildup ensure the FT590 is stored in the orange case it was
shipped in.
Over time the socket connection may still become dirty or oxidized leading to intermittent or
connections to the rack cord. If this occurs the socket face may need cleaning. Dixon sells a
cleaning brush designed specifically to clean oxidation and debris from trailer sockets. Contact
your local Dixon sales representative for information about purchasing the FT406 socket
cleaner.
