Dialight SafeSite L-864 Red LED Class I, Div 2 Medium Intensity Beacon User Manual
Page 7

Document No.
9100-127-1438-99 Rev A
March 31, 2011
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Dialight Corporation 1501 Route 34 South Farmingdale NJ 07727
Tel: 732.919.3119 Fax: 732.751.5778 Web: www.dialight.com
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4.1 Lightning Protection 
 
The Beacon incorporates protection against voltage surges (as induced by 
nearby lightning strikes for example) by means of an MOV (metal oxide varistor) 
and Gas Discharge Tube (GDT) arrangement. 
 
 
 
Section 5: Maintenance and Troubleshooting 
 
No regularly scheduled maintenance is required for the Beacon. 
 
General cleaning of the Dome Assembly should be done using soapy water. No 
other cleaning solutions are recommended. Abrasive compounds will scratch the 
Dome Assembly. 
 
Table 1 Lists possible faults and repair procedures for the L-864 Red Beacon 
 
Table 1 Troubleshooting
Symptom
Possible Cause
Corrective Action
Beacon does not light
No AC power 
 
 
LED Failure 
 
 
 
Power supply Failure 
Verify proper AC levels from 
power source thru supply 
lines. 
 
Replace LED Module 
 
 
 
Replace power supply 
Beacon does not flash Refer to controller
documentation 
supplied by the 
manufacturer. 
 
Repair and Replacement 
 
Refer to Table 1 for troubleshooting procedures. 
