Specifications

EC-Series Flood Lamps for UVCS-Series Conveyors 11
TROUBLESHOOTING
NOTE: Only qualified maintenance personnel should attempt the following procedures.
Problem
Possible Cause
Testing
Corrective Action
Bulb Will
Not Ignite
or
Bulb
Flickers,
Won’t
Maintain
Operation
Improperly fastened
connections
Visually inspect all connections to
and from the Power Supply.
Secure all connections.
Main Line Fuses blown
Remove Fuses from Power
Receptacle and check with an
Ohmmeter.
Replace Fuses, if defective.
Corroded Lamp Bases
Visually inspect the Lamp Bases
for any signs of corrosion.
Replace the Lamp Bases if
corrosion exists (both Lamp
Bases should be replaced at the
same time).
Bulb beyond useful life
Replace Bulb with (known) good
Bulb and re-test.
Replace Bulb if defective
(typical Bulb life = 2,000 hours).
Power Supply Board
failed
Check UV output voltage on power
supply board. Set Oscilloscope to:
20ms/div 100V/div
Expected value 290-340 Vrms
Square Wave. Replace Power
Supply Board if defective.
Igniter malfunctioned
Verify open circuit voltage from
igniter. Set Oscilloscope to:
50us/div 1000V/div
Expected value 4-5 KV ignition
pulse superimposed on the
square wave. Replace if
defective.
Unit
Blows
Input
Fuse
Malfunction in the
Power Supply Board
Remove power. Disconnect the
Lamp/Reflector Assembly from the
Power Supply. Replace the Fuse.
Apply power. If Fuse blows,
Power Supply is defective.
Replace the Power Supply
Board.
UV
Intensity
Appears
To Be
Low
Bulb beyond its useful
life
Use a Radiometer (Dymax ACCU-
CAL™ 50) to measure actual
output intensity. Consult manual
for proper output.
Replace Bulb if beyond useful
life (typical Bulb life = 2,000
hours).
The Quartz Envelope on
Bulb is contaminated
Visually inspect the Bulb for signs
of contamination (the Quartz
Envelope must be free from any
contamination).
Clean the Bulb with a soft, lint-
free cloth and isopropyl alcohol.
Bulb may need to be replaced if
contamination is burned into
Quartz Envelope.
Surfaces of the
Reflector may be
contaminated
Examine the Reflector surface for
contaminants. It should be a clean,
shiny surface.
Clean the Reflector with a soft,
lint-free cloth and isopropyl
alcohol, or equivalent.
Short
Bulb Life
Bulb is overcooled
(5000 UVCS and
SideCure™)
Verify that reflector temperature is
between 115°F and 145°F.
Install ventilation control plates
as described in this manual.
Degraded Lamp Bases
Visually inspect both Lamp Bases
and the electrical contacts on each
end of the Bulb. The Lamp Base
and the electrical contacts on each
end of the Bulb should show no
corrosion or evidence of arcing.
Replace Lamp Bases as
described in this manual.