Cleaning - BRAND Dispensette III Operating Manual

Cleaning

The instrument must be cleaned in the following situations to assure correct operation:
I immediately when the piston
is difficult to move
I before changing the reagent
I prior to long term storage
I prior to dismantling the instrument
I prior to autoclaving
The cylinder, valves, telescoping filling tube and discharge tube contain reagent! Never
Warning!
remove the discharge tube or the SafetyPrime
cylinder is filled. Point the valves and tube openings away from your body. Wear protective
clothing, eye protection and appropriate hand protection.
Cleaning
For proper cleaning and removal of any deposits, the piston must
always be completely pulled out of the cylinder after rinsing.
1.
Screw the instrument onto an empty bottle and empty it com-
pletely by dispensing (Fig. 1).If the instrument is equipped with
SafetyPrime
"dispensing" and "recirculating" setting.
2.
Screw the instrument onto a bottle filled with a suitable cleaning
agent (e.g. deionized water) and rinse the instrument several
times by completely filling and emptying it.
3.
If the instrument is equipped with a SafetyPrime
valve, after rinsing the instrument, it must also be rinsed in the
"recirculating" setting (Fig. 3).
4.
Pull out the recirculation tube and the telescoping filling tube.
Note:
Never exchange pistons between instruments!
48
™ recirculation valve, it must be emptied in the
I prior to changing the valve
I regularly when using liquids which form
deposits (e.g., crystallizing liquids)
I regularly when liquids accumulate in the
screw cap
™ recirculation valve while the dispensing
1
3
™ recirculation
4