Operating Environment - Hach DR 3900 Manuel D'utilisation De Base

Installation
WA R N I N G
Electrical and fire hazards.
Only use the supplied benchtop power supply LZV844.
Only qualified experts may perform the tasks described in this section of the man-
ual, while adhering to all locally valid safety regulations.
Unpack the instrument
The DR 3900 Spectrophotometer comes packaged with the following
items:
• DR 3900 spectrophotometer
• Dust Cover
• USB dust cover, fitted as standard
• Benchtop power supply with power cord for EU
• Cell adapter A
• Light shield, fitted as standard in the DR 3900
• Operator RFID tag (not available on all models)
• Basic operating instructions DR 3900, operating instructions
LINK2SC
Further information, detailed user manuals and documentation are
available on the website of the manufacturer.
Note: If any of these items are missing or damaged, please contact the
manufacturer or a sales representative immediately.
English 108

Operating environment

Note the following points so that the instrument will operate perfectly and
have a long service life.
• Place the instrument firmly on an even surface. Do not push any
objects under the instrument.
• The ambient temperature must be 10–40 °C (50–104 °F).
• The relative humidity should be less than 80 %; moisture should not
condense on the instrument.
• Leave at least a 15 cm clearance at the top and on all sides for air
circulation, to avoid overheating of electrical parts.
• Do not operate or store the instrument in extremely dusty, humid or
wet locations.
• Keep the surface of the instrument, the cell compartment and all
accessories clean and dry at all times. Immediately remove
splashes or spilt materials on or in the instrument.
N O T I C E
Protect the instrument from extreme temperatures from heaters, direct sunlight
and other heat sources.