General Maintenance - VWR Avantor 612-6857 Manual De Instrucciones

General Maintenance

VWR Bottle Top Dispenser should be cleaned in the following situations:
● Immediately when the piston is difficult to move
● Before changing the reagent
● Prior to long term storage
● Prior to dismantling the instrument
● Prior to autoclaving
● Prior to changing the valve
● Regularly when using liquids which form deposits (e.g. crystallizing liquids)
● Regularly when liquids accumulate in the cap.
Pre Dis-assembly Procedure
All maintenance should be carried out wearing suitable eye protection and protective
clothing. If in doubt, consult your safety officer.
1. Make sure that the Dispenser is completely empty.
2. Place the instrument into an empty sink together with its reservoir.
3. Unscrew the threaded platform base from the reservoir and lift the dispenser's intake
tube carefully out of the reservoir, whilst tapping it against the reservoir's aperture to
shake off any droplets from the intake tube.
4. Hold the dispense nozzle over the aperture of the reservoir and apply gentle piston
strokes in order to return any contents into the reservoir.
5. Empty the instrument completely and flush thoroughly with distilled water.
6. If the piston barrel is still not completely clean, you need to dis-assemble the dispenser.
Refer Dis-assembling procedure given below.
Dis-assembly and assembly Procedure
1. Pull the cap outwards to expose the Calibration Nut.
(Fig. 16)
2. Unscrew the Calibration Nut with the help of calibration tool to
dis-assemble the Piston and shaft out of the main housing.
(Fig. 17)
13. vwr.com I Instruction manual VWR Bottle Top Dispenser with Recirculation Valve
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Fig.16
Fig.17