Page 178 - 2021 Catalog
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MONITORS AND CONTROLS • TROUBLE SHOOTING TROUBLESHOOTING
  Testing Flow Meter Cables
1. Disconnect the cable from the flow sensor.
Flow Sensor Connector Cable Connection
Note: If a +5 VDC voltage reading is not present, disconnect the speed sensor cable. If the flow reading is restored, refer to the Testing Speed Sensor Extension Cables below to test the speed sensor extension cables.
1. Enter a METER CAL value of 1 into the console.
2. Press TOTAL VOLUME button.
3. Place the RATE 1/RATE 2/MAN switch in the MAN position.
4. Turn the boom switches and boom master switch ON.
5. Create a short between the ground and signal sockets by inserting a small jumper wire or paper clip into both sockets simultaneously.
Each time contact is made, the TOTAL VOLUME reading should increase in increments of 1 or more. If the TOTAL VOLUME does not increase:
a. Remove the section of cable closest to the console. b. Repeat the ground-signal short test.
• If the TOTAL VOLUME does not increase, replace the defective cable and repeat the ground-signal short test.
• If the TOTAL VOLUME increases, replace the flow sensor.
6. Perform voltage checks as illustrated in the figure above.
Important: Re-enter the original METER CAL figure after testing is complete.
Testing Speed Sensor Extension Cables
1. Disconnect the extension cable from the speed sensor assembly cable.
Speed Sensor Connector Cable Connection
Note: If a +5 VDC voltage reading is not present, disconnect the speed sensor cable. If the speed reading is restored, refer to the Testing Flow Meter Cables above to test the flow meter cables. If the speed system is a radar-type system, the voltage between the 10 o’clock and 2 o’clock positions may read +12 VDC.
1. Enter a SPEED CAL value of 9999 into the console.
2. Press the DISTANCE button.
3. Create a short between the ground and signal sockets by inserting a small jumper wire or paper clip into both sockets simultaneously. Each time contact is made, the DISTANCE reading should increase in increments of 1 or more. If the DISTANCE does not increase:
a. Remove the section of cable closest to the console. b. Repeat the ground-signal short test.
• If the DISTANCE does not increase, replace the defective cable and repeat the ground-signal short test.
• If the DISTANCE increases, replace the speed sensor. 4. Perform voltage checks as illustrated in the figure above.
Important: Re-enter the original SPEED CAL figure after testing is complete.
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Grimes, IA 800-351-1587 • Gardner, KS 877-829-8502 • Brimfield, IL 855-778-8500
        MONITORS AND CONTROLS




































































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