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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 LS8000 consists of three main sub-assemblies.  These are the enclosure with the antenna probe, the transmitter 
module and the receiver card.  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 and 4. 
 

PROBLEM POSSIBLE 

CAUSE 

SOLUTION 

RED LED cannot be adjusted to 
turn on. 

Transmitter module not connected 
to probe. 
No power to unit. 
Blown on-board fuse 
Bad receiver card. 

Plug transmitter into probe. 
 
Check for correct power. 
Replace fuse. 
Repair or replace card. 

RED LED remains on at all times 

Antenna probe is shorted to case 
or ground. 
 
 
 
 
 
 
Shielded cable not correctly 
hooked up. 
Shielded cable broken or shorted. 

Unplug banana plug and position 
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. 
Check shielded cable for proper 
connection. 
Check shielded cable for shorts or 
open circuits. 

Unit triggers when material 
touches probe, but will not reset 
when material recedes from probe 
or unit and gives false alarm. 

Improper mount of probe. 
Improper calibration procedure. 
Excessive material build-up on 
probe. 
 
 
Probe is mounted in flow of 
material. 

Contact factory or dist. 
See section 4 C. 
Perform “dirty probe calibration”: 
Recalibrate with built up material 
on probe.  See section 4C. 
 
Revise mounting or use time 
delay.  See section 4C. 

Unit will not detect material. 

Improper calibration. 
 
Transmitter module not plugged 
into probe. 
Unit was calibrated with material 
touching probe. 

See calibration instructions, 
section 4. 
Plug transmitter module into 
probe. 
Be sure material is not touching 
probe and recalibrate. 

Unit will not stay in calibration. 

Poor grounding of transmitter 
housing to vessel. 

Provide secure ground connection. 

Relay operates properly, but no 
signal at terminals. 

Burned or broken lands on 
receiver printed circuit board. 
 
 
 
Bad relay contacts. 

Turn off power.  Remove module 
from housing and inspect lands on 
printed circuit for damage.  
Replace if necessary. 
 
Replace relay or return for repair. 

 
 

PLEASE CONTACT THE FACTORY OR YOUR DISTRIBUTOR IF YOU HAVE ANY 
QUESTIONS OR NEED ASSISTANCE. 
 
 
 

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Summary of Contents for LS8000

Page 1: ...MANUAL I IN NS ST TA AL LL LA AT TI IO ON N C CA AL LI IB BR RA AT TI IO ON N T TR RO OU UB BL LE ES SH HO OO OT TI IN NG G W WA AR RR RA AN NT TY Y TABLE OF CONTENTS Page 1 Description 1 BABBITT INTE...

Page 2: ...tallation 2 A Inspection 2 B Physical Installation of Probe 2 C Installing the Receiver 3 D Typical Applications and Wiring Diagrams 4 1 LS8000 Terminal Layout 4 2 Ladder Diagrams 6 4 Calibration 10 A...

Page 3: ...al Power 115 VAC 15 50 60 Hz 2 watts standard 12 VDC 24 VDC or 230 VAC optional Output 2 Form C contacts DPDT relay 5 amp resistive at 125 250 VAC 30 VDC Fuse On board 250 mA 125 volts Fail Safe Selec...

Page 4: ...with probe attached 2 A transmitter module in the explosion proof enclosure 3 The LS8000 R receiver card 4 A plastic snaptrack to mount the receiver card B PHYSICAL INSTALLATION OF TRANSMITTER MODULE...

Page 5: ...commend a 36 top mounted high level probe in storage silos and a 24 in smaller vessels such as use bins CAUTION Always take safety precautions before opening vessels for such inspection c On gravity f...

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Page 11: ...9...

Page 12: ...uching the probe The green led indicates relay status and is on when the relay is energized When product comes into contact with the probe the relay is de energized 2 Fail Safe Low FSL means that the...

Page 13: ...o out replace electronics Check shielded cable for proper connection Check shielded cable for shorts or open circuits Unit triggers when material touches probe but will not reset when material recedes...

Page 14: ...ditions or components which have been misused abused damaged by neglect or accident This warranty shall not apply to any components which have been altered or repaired without the prior written consen...

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