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Cleaning
Cleaning is necessary if you want to use the dispenser for another chemical
solution or if has not been used for a long time. During cleaning, please follow the
safety instructions (refer to Chapter 2
Before cleaning, remove all liquid from the dispenser without any loss of reagent
by following these steps:
1.
Turn the nozzle switch to "Empty" (180°) and let the remaining reagent from
the discharge tube flow back into the reagent bottle.
2.
Unscrew the dispenser from the bottle.
3.
Drain the telescopic tube
4.
Turn the nozzle switch from "Empty" (180°) to "Recycle" (90°) and remove all
remaining liquid from the cylinder back into the reagent bottle.
For cleaning, follow these steps:
1.
Attach the telescopic tube and then screw the dispenser on a bottle with
distilled water or alcohol.
2.
Turn the nozzle switch to "Dispense" (0°).
3.
Dispense multiple times until the instrument is clean.
If necessary, disassemble the dispenser (Chapter 5 MAINTENANCE, on page 11) and
clean all components.
The dispenser should be cleaned daily if used with following chemicals:
•
Solutions that tend to crystallize (e.g., salts)
•
Inorganic oxidizing solutions (e.g., biuret reagent)
Sterilization
After removal of the reflux tube
be steam-sterilized (121°C, 1 bar, 20 minutes) according to EN ISO 17665. Place the
instrument on a cloth and avoid any contact with hot, metal surfaces.
The discharge tube
In order to prevent loss of adjustment due to heat expansion of the different
materials, the quick-lock knob
maximum volume. Before you use the dispenser, let it reach room temperature
(about 2 hours cooling time). After autoclaving, check all screw fittings for
tightness and the calibration of the instrument. Recalibrate the dispenser, if
necessary (refer to Chapter 7 CALIBRATION, page 13). After autoclaving, perform
a visual check of the instrument for any changes and verify all screw fittings.
In case of deformation, please return the instrument with a description of the
autoclave protocols that were used.
12
CLEANING & STERILIZATION
LT801577_D _UG DISPENSMAN.indd 12
Chapter 6
CLEANING & STERILIZATION
21
by slightly tapping inside the reagent bottle.
and the telescopic tube
22
has to be attached to the protective sleeve
9
has to be set to a minimum of 2/10 of its
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