Hach DR 2800, Руководство пользователя, Страница: 73 / 96

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Section 7 Maintenance
DANGER
Only qualified personnel should conduct the tasks described
in this section of the manual.
7.1 Cleaning Requirements
DANGER
Always disconnect the power and remove the battery from the
DR 2800 before attempting any cleaning operations.
7.1.1 Spectrophotometer
• Clean the enclosure, cell compartments, and all accessories
with a soft damp cloth. A mild soap solution can also be used.
Do not get excess water in the cell compartments. Do not insert
a brush or sharp object into Cell Compartment #1 to avoid
damaging the mechanical components.
• Dry the cleaned parts carefully with a soft cotton cloth.
7.1.2 Display
Important Note: Under no circumstances should the instrument,
display, or the accessories be cleaned with solvents, such as
petroleum distillates, acetone, etc.
• Take care not to scratch the display. Do not touch the screen
with the tip of a ball-point pen, pencil, or similar pointed objects.
• Clean the display with a soft, lint-free and oil-free cotton cloth.
Diluted window cleaner can also be used.
7.1.3 Cells
CAUTION
Use proper laboratory practices whenever there is a risk of
chemical exposure.
7.1.3.1 Glass Cells
Important Note: Glass cells that have been used for organic
solvents (such as chloroform, benzene, toluene, etc.) must be
rinsed with acetone before being treated with cleaning agents. In
addition, another rinse with acetone or water is necessary as a final
treatment step before the cells are dried.
• Clean glass cells with cleaning agents and water.
• Avoid scratching the optical surfaces with brushes or other
cleaning devices.
• Afterwards, rinse the cells several times with tap water and
then thoroughly with deionized water.
7.1.3.2 Plastic Cells
• Clean with detergent and water, or with mild acid (brief
exposure).
• Avoid scratching the optical surfaces with brushes or other
cleaning devices.
• Rinse with deionized water.