Drawell DU-8800DS Series, User Manual

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43
Instrument Maintenance
To keep the instrument work in good condition, constant maintenance is
needed.
Daily Maintenance
1, 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 samples and liquid easy to volatilize. Any
solution remains in the compartment should be wiped off immediately.
2, 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.
3, 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.
Troubleshooting
1, No response after power on
Possible Cause Solution

Bad contact in power supply Improve the contact

Fuse melt Replace a new fuse
2, No Stable Reading
Possible Cause Solution

No enough pre-warm Increase the pre-warm time

Glass cuvettes used in UV Range Use Silicon Cuvettes in UV Range

unstable Sample Improve the sample

Much higher sample concentration Dilute the sample

Low voltage or unstable power supply Improve the power condition

Lights defect Replace a new lamp

Light used up Replace a new lamp
3, Worse Repeatability
Possible Reason Solution

Unstable sample Improve the sample

Cuvettes polluted Clean the cuvettes