Operating Manual Xenotest
®
220/220+
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10
Maintenance
10.4 Cleaning
Cleaning the filters and outer cylinders
Outer cylinders and optical filters should be cleaned with
laboratory-grade optical cleaner and then dried with a
dry cloth.
NOTE – handling the filter plates
Residue from touching with fingers can burn into the filter
plates and cause uneven irradiance.
• Wear cotton gloves to clean filters and glass compo
-
nents.
Cleaning the water tank (fig. 47)
In order to prevent build up in the pipe system and the test
chamber, the water tank should be emptied and rinsed
with clean water before every new test program.
1. Open the lower instrument door.
2. Pull the water tank forward and remove the front lid.
3. Empty the water tank.
4. Dry with a clean cloth.
Cleaning the test chamber
Clean the test chamber with liquid stainless steel cleaner
without bleach. Rinse with pure water to prevent cleaning
agent residue from contaminating the water circulation
system.
Cleaning the instrument surface
CAUTION – plastic surfaces!
Parts of the instrument surface are made of plastic.
Solvents can attack plastics and damage them. Do
not clean the top of the instrument and especially the
control panel with solvents containing hydrocarbons.
Clean the instrument surface with a solution of warm
water and mild detergent, wipe the surface clean and dry
with a clean cloth.
Fig. 47
