CHAPTER 4 MAINTENANCE
41
4.4.2 Clear of Lamp Use Time
After replacing the lamp, clear the use time of old lamp. The procedures can
refer to
“
UV Analyst
Operation Manual”
relevant section.
4.4.3 Adjustment of Lamp
WARNING
Usually, after replacing lamp, there is no need to do any adjustment. If
light source adjustment is required, warnings are as follows:
(1) When lamp is ON, WI lamp and D2 lamp have high voltage. So
touching lamp and its lead is forbidden to avoid electric shock.
(2) When lamp is ON, WI lamp and D2 lamp have high temperature.
So touching surface of the lamp is forbidden to avoid scald.
(3) When D2 lamp is ON, it will emit strong ultraviolet radiation. So
avoid seeing the lamp directly.
A
）
The adjustment of WI lamp position are as follows: (Refer to Figure 4-16
～
Figure 4-17)
(1)Turn off D2 lamp.
(2) Set wavelength below 300nm, and set 2nm slit.
Aim the viewfinder of light source at WI lamp side to make WI lamp aim at
light-entrance slit. Cofirm relative position of WI lamp facula and light-entrance
slit is OK.
If relative position of WI lamp facula and light-entrance slit has deviation, adjust
Screw C of WI lamp and Screw A of viewfinder.
If WI lamp facula has horizontal deviation, adjust screw A of viewfinder.
If WI lamp has vertical deviation, adjust Screw C of WI lamp (three in all).
After adjustment, tighten Screw A.
(3) Set wavelength as 580nm.
Open the door of sample compartment under wavelength 580nm. Insert a
white paper in front of photodiode, aiming at the shape of WI lamp facula
(yellow at 580nm). If facula is dark or the shape is abnormal, adjust Screw C of
WI lamp and Screw of viewfinder.
A
，
Make the shape of WI lamp facula rectangle.
◇
Note: As for turning on and turning off the lamp, setting of wavelength,
please refer to relevant section.
