Onda UV-20, Руководство пользователя

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Power on, back light is
OK, but nothing display
on the screen or display
is not clear
Display Contrast problem
Adjust the contrast
potentiometer
Measurements inaccurate
Cuvettes were
contaminated
Clean cuvettes
Samples were
contaminated
Improve samples
Worse matching of the
cuvettes
Improve the matching of
the cuvettes
Dark current error Resample dark current
Repair and Maintenance
1. Daily Maintain
Check the Compartment
After measurement, the cuvettes with sample solutions should be taken out
of the compartment in time. Or the volatilization of the solution would
make the mirror go moldy. Users must pay more attention to the corrosive
sample and liquid easy to volatilize. Any solution remains in the
compartment should be wiped off immediately.
Surface Clean
The cover of the instrument is with paint. Please use wet towel to wipe
off the drips on the surface immediately. Organic solution is forbidden
to be used to clean the cover. Please wipe off the dirt on the cover timely.
Clean the Cuvettes
After every test or after a solution change, the cuvettes should be cleaned
carefully, or the remains on the surface would cause measuring error.
2. Spare Parts Replacement
Replace the Fuse
Danger! Be sure to switch off the power and unplug the socket
before replacement!
Step 1. Tools preparation
Prepare a 3×75 Flat Blade screwdriver .