Here is the Bartol Mag-Probe Locomotive Interface Unit Relays Test
Testing EPIC Control Portion Magnet Valves – EPIC 3102/II – Locomotive Interface Unit Relay
Testing Locomotive Interface Unit Relays
MagProbeUsing a Bartol Mag-Probe
Place the Mag-Probe near the locomotive interface unit relay coil to be Tested. Relay numbers can be identified by the silkscreening on the printed onThe Printed Circuit Board.
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If the Relay being Tested is Energized the Mag-Probe
LED will be illuminated
If the Relay being Tested is Energized the Mag-Probe
LED will be illuminated
(AS Shown Above)
(Special Note) The Mag-Probe Can Not be Used to Test High Current Output Relays (17-21). In the Locomotive Interface Unit Due to one set of the Two Exposed Contacts ALWAYS being Energized and the Relay ALWAYS indicated on.
To Test High Output Current Relays (17 -21) Depress the Contacts as Shown. Contact Movement Indicates the Relay is De-Energized.
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