Hach-Lange DR 3900 User Manual - Manual (Page 127)

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Section 7 Maintenance
7.1 Cleaning requirements
7.1.1 Spectrophotometer
• Only clean the housing, the 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
• Do not scratch the display. Never touch the display with ball
pens, pencils or similar pointed objects.
• Clean the display with a soft, lint- and oil-free cotton cloth.
Diluted window cleaner liquid can also be used.
7.1.3 Cuvettes/cells
1. After use, clean the glass cells with cleaning agents.
C A U T I O N
Potential Chemical, Biological Eye and Skin Hazards.
Only qualified personnel should conduct the tasks described in this
section of the manual.
N O T I C E
Remove all cells remaining in the instrument. Dispose of the cells or
their contents in an authorized manner.
C A U T I O N
Potential Pinch, Eye, Burn and Chemical Hazards.
Before cleaning, always disconnect the instrument from the power
source.
N O T I C E
Never use solvents like turpentine, acetone or similar to clean the
instrument, including the display and accessories.
C A U T I O N
Potential Chemical/ Biological Exposure Hazards.
User correct laboratory practices if a risk of chemical exposure exists.