PCME QAL 181 X, Руководство пользователя

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- PCME QAL 181 MANUAL: 100 -
Apply known Clean
Air eg Air Duster
(Tube supplied
with Air Duster)
Level 3 - Cleaning the Optical Elements when the Span and AST readings have fallen
•
Tools – As for steps 1 and 2 plus a service toolkit
3.1 Complete steps 1.1 – 1.4
3.2 Clean the outer surfaces of the End Cap and the Outer Tube, remove the End Cap.
3.3 Check for signs of contamination within end cap (both liquid and dry). Note type(s) and
clean.
3.4 Using ‘Air Duster’ blow the mirror surface clean and the tip of the quartz rod (through the
slot in Inner Tube). Also clean the ‘Exit Baffle’ cone.
3.5 Refit End Cap and air supply, then re test with Audit Unit.
3.6
If the test is now OK with the Audit Unit, re test with Span Element. If the Span Element
result is low carry out procedures 2.1 to 2.5 as appropriate.
3.7 If both are correct, but the ‘Off Set’ is high and/or the ‘normal reading’ is higher than
expected, it maybe that the ND Filter has become contaminated. In addition to steps 3.1
to 3.4 carry out additional steps –
3.8 Remove the Beam Dump. This is done by removing the two M3 grub screws on the base
of the Beam Dump assembly, then pulling off from the ‘Inner Tube’ (Tip remove one grub
screw but just loosen other so easier to refit).
3.9 Using ‘Air Duster’ blow the surface of the ND filter clean. This is best achieved by first
applying air in to the ‘mounting hole’ (position B) , followed by through the mirror (position
A)
Apply known Clean
Air eg Air Duster
Cross-Drilling
Hole
Grub Screws
holding Beam
Dump Assembly
Quadrant Tube
A
B