YOKOGAWA UV700G, User Manual

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<8. Maintenance>
8-10
IM 12K01B02-01E
CAUTION
• As the wiper motor is operating, take care to handle so that fingers etc are not caught in the
motor.
• Care should be taken when handling the cell of detector so that it does not touch other parts
of the unit.
• Before performing the work, confirm that the UV lamp is not illuminated. The UV lamp
should never be viewed directly when it is illuminated as it may damage your eyes.
• If no button is pressed for about two hours on the MAINTENANCE - ACTION display, the
display automatically turns to the MEASUREMENT display. In this case, care should be
taken as the wiper motor and UV lamp may turn ON.
• Clean the wiper within a few minutes. If operating the wiper without any solution for a long
period of time, it may damage the cell.
• If the MAINTENANCE – ACTION screen is not touched (backlight is not turned on) for about
2 hours, the screen will return to the MEASUREMENT screen. When the screen is touched
once and the backlight is turned on, the timer will be reset and the screen will not return to
the MEASUREMENT screen until about 2 hours have elapsed.
• Note that the screen will return to the MAINTENANCE screen and automatically the wiper
motor and UV lamp will be turned on if no buttons are pressed for 30 minutes on the
MAINTENANCE – ACTION screen. When any button is pressed within 30 minutes, the
timer will be reset and actions will be performed as specified on the screen until 30 minutes
have elapsed.
20. Dip the detector in the calibration tank with zero solution.
21. When up the unit for approximately 60 minutes, replace the zero solution, and perform zero
calibration.
Refer to “5.4.2 Common Zero Calibration”
22. Perform the span calibration as necessary.
Refer to “5.4.3 Common Span Calibration”
23. Put the detector back in the measuring tank, and turn the maintenance switch OFF.