15
Sample is not Stable
Improve the sample
The concentration of sample is
too high
Diluted sample
Power Supply Voltage Low or
not Stable
Improve the Power Supply
Lamp damage or lamp life
maturity
Replace lamp
Dark Current Error when self-
check
The lid of the compartment is
open during self-check
Close the lid, restart
System Calibrate Failed
Something block the Light path Remove it, calibrate again
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
