Ocean Optics LS-450 - Manual (Page 27)

009-00000-450-02-201105 13
Appendix A
Maintenance
Bulb Replacement for LS-450 Series Light
Sources
The LS-450 and R-LS-450 light sources come with a standard LED that emits blue light at approximately
450-470 nm (see Absolute Spectral Output graphic above). However, the LS-450 and R-LS-450 can
accommodate LEDs of different wavelengths, which are sold as accessories to the units.
Note
This section is not applicable to the USB-LS-450.
The LED is mounted in a silver reflector barrel, which allows easy insertion into and removal from the
optical housing of the LS-450 and R-LS-450. The reflector barrel also optimizes any stray LED light,
resulting in increased signal strength. Thus, you should never remove the LED from the reflector barrel.
To change the LED on the LS-450 and R-LS-450, you will need the following tools:
 3/32 Allen wrench (LS-450 only)
 1/20 Allen wrench
Changing a Bulb in the LS-450
► Procedure
To change the bulb in the LS-450, follow the steps below:
1. Ensure that the unit is off and that power is disconnected from the LS-450.
2. Use the 1/20 Allen wrench to loosen the small setscrew located on the bottom of the unit
(between the set of “fins” that protrude from the sides of the unit). If you remove the screw fully,
place it in a safe place until you replace it later in this procedure.