BABBITT LS7000, Owner'S Manual

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www.babbittinternational.com Reference Manual
2021
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5. MAINTENANCE AND TROUBLESHOOTING
No routine maintenance is required other than keeping the interior of the unit clean and free of dirt, dust and
other contaminants. The LS7000 consists of two main sub-assemblies. These are the enclosure with the
probe assembly and the power supply board. The following troubleshooting guide will assist in determining
how to correct most of the problems which may occur in the field. Review the Installation and Calibration
procedures in sections 3 & 4.
PROBLEM POSSIBLE CAUSE SOLUTION
RED LIGHT cannot be Antenna lead not connected. Plug antenna lead into probe.
adjusted to turn on. No power to unit. Check for correct power to unit.
Blown on-board fuse. Replace fuse.
Bad sensing card. Repair or replace card.
RED LIGHT remains on at
Antenna probe is shorted to case or Unplug banana plug and position
all times ground. it so that the bare end is not
touching anything. Turn calibration
pot 20 turns CCW. LED should go
out. If it does, repair, replace or clean
antenna probe. If LED does not go
out, replace electronics.
Bad sensing card. Repair or replace card.
Unit triggers when material
Improper mount of probe. Contact factory or distributor.
touches probe, but will not Improper calibration procedure. See Section 4.4
reset when material recedes Excessive material build-up on probe. Perform “dirty probe” calibration;
from probe or unit gives
recalibrate with buildup material on
false alarm. probe – see section 4.4
Probe is mounted in flow material. Revise mounting or use time delay
Unit will not detect material.
Improper calibration. See calibration instructions section 4.
Antenna lead not plugged into Plug antenna lead into probe.
probe.
Unit was calibrated with material Be sure material is not touching
touching probe. probe and recalibrate.
Unit will not stay in
Poor grounding of unit to vessel. Provide secure grounding
calibration. connection.
Relay operates properly, but
Burned or broken lands on the Turn off power. Remove
no signal at terminals. printed circuit board. module from housing and inspect
lands on printed circuit for damage.
Replace if necessary.
Bad relay contacts. Replace relay or return for repair.