Kepri™
UV LED Upper-Air System
Excelitas Canada Inc. 2022
All rights reserved
035-xxxxxR, rev.1
14
035-00725R
7
Care and Maintenance
7.1 General
Kepri is designed to be a very low maintenance system with only one consumable component
– the
replaceable LED array. By maintaining the following conditions, performance will be maximized and
risk of future problems will be reduced.
•
Always disconnect the device before servicing.
•
Never touch the emission window with fingers, tools, or other abrasive/sticky/sharp materials,
fluids, or other materials except as described in
section 7.3
•
Never look directly into the emission window while ON.
•
If cleaning is required, follow the directions in
section 7.3
7.2 Monitoring and Replacing the LED Array
Kepri is equipped with a replaceable LED array that allows the module to utilize the latest in UV LED
technology. The device maintains an internal clock and indicates the percentage of remaining life. This
is reflected in the
color
of the Lifetime indicator:
Lifetime Indicator Color
Percentage of Life Remaining
Suggested Action
Green
10-100%
-
Amber
1-10%
Order replacement array
Red
0
Change LED array
Table 3 Lifetime Indicator Color Descriptions
Note
Regardless of the color, the device will continue to emit UV energy.
Replacing the LED Array
When the Lifetime indicator turns amber or red, it is time to replace the LED array.
Replace the LED module with the following Excelitas Technologies part numbers:
Part Number
Description
016-00499R
Printed circuit board assembly (not sold)
012-00129R
Printed circuit board assembly (p/n: 016-00499R) with extrusion
(for purchase)
Table 4 LED Array Replacement Part Numbers
1. Using the ON/OFF switch, turn the Kepri device off.
2. Disconnect the power cord from the receptacle located on the rear of the device.
3. With a small flat head screwdriver, unscrew the bolt on the LED replacement door and remove the
door. Refer to Figure 14.
