Hach-Lange 2100Q and 2100Qis User Manual - Manual (Page 21)

Maintenance
C A U T I O N
Multiple hazards. Only qualified personnel must conduct the tasks
described in this section of the document.
Clean the meter
The meter is designed to be maintenance-free and does not require
regular cleaning for normal operation. Exterior surfaces of the meter may
be cleaned as necessary.
Note: Do not clean the meter with solvents to avoid damaging the material.
1. Clean the meter with a dust- and lint-free dry or slightly damp cloth. A
mild soap solution can also be used for liposoluble contamination.
Store the sample cells
N O T I C E
Do not air dry the sample cells.
Note: Always store the sample cells with caps on to prevent the cells from drying.
1. Fill the sample cells with distilled or demineralized water.
2. Cap and store the sample cells.
3. Wipe the outside of the sample cells dry with the a soft cloth.
Replace the battery
W A R N I N G
Explosion hazard. An expired battery can cause hydrogen gas buildup
inside the instrument. Replace the battery before it expires. Do not
store the instrument for long periods with a battery installed.
W A R N I N G
Potential fire hazard. Use only alkaline or nickel metal hydride batteries (NiMH) in
the meter. Other battery types or incorrect installation can cause a fire. Never mix
battery types in the meter.
For battery replacement refer to Install the battery on page 6.
1. Remove the battery cover.
2. Remove the batteries.
3. Install 4 AA alkaline or 4 AA nickel metal hydride (NiMH) batteries.
Make sure that the batteries are installed in the correct orientation.
4. Replace the battery cover.
Replace the lamp
C A U T I O N
Burn Hazard. Wait until lamp cools down. Contact with the hot lamp can cause
burns.
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