10. Cleaning
Instrument will only function safely if cleaned
regularly. Be sure to clean instrument:
1.
Immediately, if the piston moves stiffly;
2.
Before changing reagents.
3.
Before longer downtimes.
4.
Before any maintenance and repair work.
5.
Before autoclaving.
Warning!
Dispenser, intake tube and discharge tube
may be filled with reagent. To prevent
injury from chemicals, wear eye protection,
protective clothing and protective gloves.
Always point the discharge tube outlet
away from the user and other people.
10.1. Emptying
1.
Mount the closure cap.
2.
While the dispenser is still mounted on the
bottle, place it into a suitable basin.
3.
Unscrew the dispenser and lift it high enough
so that the intake tube (11) is no longer
immersed in liquid.
4.
Cautiously tap the intake tube against the
inside of the bottle so that the reagent runs
out.
5.
Mount the dispenser on another empty
bottle.
6.
Select the maximum volume.
7.
Pull off the closure cap.
8.
Hold the discharge tube outlet over
the opening of the first bottle. Empty
the dispenser by repeated dispensing
movements. In dispensers with recirculation
valve, set the valve switch to "recirculation"
and again move the piston repeatedly to
empty the recirculation channel.
9.
Mount the clousure cap and unscrew the
dispenser from the bottle.
22
10.2. Standard cleaning
1.
Mount the dispenser on a bottle filled with a
suitable cleaning solution.
2.
Rinse the dispenser by repeated dispensing
movements at maximum volume. In
dispensers with recirculation valve, set the
valve switch to "recirculation" and again
move the piston repeatedly to rinse the
recirculation channel.
3.
Empty the dispenser completely, as described
in chapter 10.1.
4.
Mount the dispenser on a bottle filled with
distilled water. Rinse thoroughly, then empty,
as described in chapter 10.1.
10.3. Intensive cleaning
Intensive cleaning always has to be preceded
by a standard cleaning. This procedure must be
followed if the piston is difficult to move, or if the
dispenser is to be autoclaved. For this purpose, the
dispenser must be partially disassembled.
Warning!
Before disassembly, always perform the
standard cleaning procedure (see chapter
10.2.). To prevent injury from chemicals,
always wear eye protection, protective clothing
and protective gloves. Avoid splashing of
reagent.
1.
Pull off the telescopic intake tube and
clean it with a soft bottle brush. Replace as
necessary, especially if cracked or worn.
2.
Unscrew the piston seat (2) and carefully pull
out the piston (5).
3.
Clean piston and cylinder with a soft bottle
brush and rinse with water.
4.
Re-insert the piston carefully so as not to
damage the piston seal.
5.
Tighten the piston seat by hand.
6.
Rinse the dispenser thoroughly with dist.
water, then empty as described in
chapter 10.1.