Care and maintenance, Cleaning the optics, Service requirement – YSI 9300 Photometer User Manual
Page 10: Error messages
10
CARE AND MAINTENANCE
The photometer is designed to give long and trouble-free operation. Care must
be taken, however, to avoid test solutions being spilt over the instrument, and
to prevent contamination of the instrument. Spills and moisture should be
wiped off immediately with a dry cloth. On no account should solvents or
abrasive materials be used to clean the instrument. Care should be taken to
keep the test chamber clean.
Cleaning the Optics
Any build-up of dirt or deposits may interrupt light transmission and affect
readings.
To clean the optics, undo the two screws on the bottom of the instrument and
set aside to remove the optics base plate. Gently clean the internal surfaces
of the optics with a soft, non-abrasive cloth. Deposits may be removed with a
slightly dampened cotton ball. Replace the optics base plate and tighten the
screws.
SERVICE REQUIREMENT
The photometer is fitted with long-life light sources and contains no user-
serviceable components beyond cleaning. If the instrument requires servicing
or repair, this can be arranged through our Technical Support Department (+1
937 767-7241, (800) 897-4151,
or visit
find an authorized service center).
ERROR MESSAGES
The photometer will display an error message in the unlikely even of malfunction.
These error messages are mainly designed to assist service staff in diagnosing
instrument faults. In the event of an error message appearing on the photometer
display, contact our Technical Support Department for advice.
Error messages are coded 1 – 10. Errors 1, 2, 3, 4, 5 and 6 are internal self-
checks. In the first instance, the user should change the instrument batteries. If
the error message still appears, it indicates a potential electronic issue with the
instrument.
Errors 7, 8, 9 and 10 relate to blanking in the instrument. In the first instance,
the user should check operating technique and sample clarity. If these are in
order then these errors indicate a potential issue in the instrument optics.