Bennett 3000 Series Service Manual page 41

Commercial/industrial dispensers with 531 electronics
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Testing the Handle Switch Signal
Figure 1 shows the Pulse Output board. In the center on the bottom is
TS2. This is the terminal strip that the handle signal to the Fleet system
connects to.
Step 1 - Remove the field wires from the terminal strip and mark them
so that you will put them back on the same terminals when you are
finished. See Figure 2.
Step 2 - With the fueling point handle in the "OFF" position, use your
multi meter and measure the "resistance" across the handle channel
you are testing on TS2. This example shows side 2 handle being
tested. With the handle "OFF" the LED above the relay should be
"OFF" and the resistance reading should be "Open" (O.L. means Open
Loop) See Figure 3.
Step 3 - Lift the handle that you want to test. The LED above the relay
should come on. See Figure 4. The resistance shown on your meter
should show 0 ohms (dead short). This means that the relay is closed.
See Figure 5.
Step 4 - De-activate the handle and make sure that the LED turns off
and that the relay opens. See Figure 3.
Step 5 - Reconnect the field wires to terminal strip TS2.
This test should be run if the Fleet System is not receiving the handle
signal. If this test passes but the Fleet System does not signal "in use",
contact either Bennett Technical Support or the Fleet System
manufacturer for assistance.
Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
41
LED comes on
107932 Rev G 4-24-17

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