6
Routine Maintenance
Replacing the Lamps
92
Accela PDA Detector Hardware Manual
Thermo Scientific
11. Remove the lamp cover as follows:
a. Make sure that you have allowed sufficient time for the lamp cover and the lamps to
cool to room temperature.
b. Remove the lamp cover by loosening the large, captive Phillips head screw enough to
free the lamp cover from the lamp tray (see
Figure 75.
Removing the Phillips head screw
c.
Lightly touch the lamp cover to make sure that it has cooled to room temperature,
and then carefully lift the lamp cover out of the detector.
IMPORTANT
Do
not
try to remove the lamps from their mounting assemblies.
Remove and replace the lamp together with its mount, cable, and connector as
described in the following steps.
IMPORTANT
The surfaces of both lamps must be free of fingerprints and
smudges, which cause performance problems. For this reason, wear clean,
talc-free gloves when you handle the lamps. If either lamp requires cleaning, use a
lint-free lens paper moistened with methanol or isopropanol before replacing the
lamp cover.
Phillips head screw
