Thermo Scientific 1500 Series Operating Instructions Manual page 33

To reinstall the panel,
reverse these steps,
ensuring that the plastic
pin in the top corners of
the dress panel properly
engage the corner posts.
Figure 44. Front panel installation
Changing the LED Lamps:
1. Unplug the cabinet or turn off the System Reset Switch
located on the top of the cabinet.
2. Remove the front dress panel as noted in Figure 43.
3. Locate the Left End Cap that aligns both LED lamps
(Figure 45), remove the Left End Cap by pulling it away
from the lamp ends.
Figure 45. Changing the LED Lamps
28 | Maintaining the Cabinet
Left End Cap
LED Lamps (2)
4. Remove both Socket Caps (on the right end of each LED
lamp) by pulling each Socket Cap straight off the right
end of the lamp one at a time (Figure 46).
Spring Clip 
(2 per end)
Note Dead Band 
(on LED Lamp)
Figure 46. Removing Socket Caps
5. Pull each LED Lamp straight toward you to release the
lamp from the two Spring Clips holding it in place
(Figure 46). Note the rotational position of the old LED
lamps (there is a dead band stripe that will need to be
oriented the same when reinstalling the new LED Lamps).
6. Install the new LED Lamps by reversing the removal
procedure. Take care to look at both ends of the new
LED Lamps. One end is labeled with a '+' and '-' and 'L'
and 'N' (Figure 47). This end of the new LED Lamp must
go to the right, and is inserted into the Socket Cap.
Figure 47. Installing the new LED Lamps
7. When reinstalling the Left End Cap, the pins on each LED
Lamp must align rotationally with the Left End Cap. This
ensures the dead band stripe is positioned correctly for
maximum cabinet lighting.
1500 Series Class II, Type B2 Biological Safety Cabinet
Socket Caps (2)
Socket Caps (2)
LED Lamp End
with markings:
L (+) and N (-)