Maintenance/Cleaning; Sterilization/Autoclaving; Fluid-Path Dissassembly Procedure - JENCONS DIGITRATE Gebrauchsanweisung

Maintenance/Cleaning

1 Place the instrument into a sink together with its reservoir. Unscrew the threaded platform base (10) and lift the dis-
penser's intake tube (14) carefully out of the reservoir, whilst tapping it against the reservoir's aperture in order to shake
off any droplets from the intake tube.
2 Hold the dispense nozzle (12) over the aperture of the reservoir and apply gentle piston strokes in order to return the
contents into the reservoir.
3 Flushing out with distilled water or a suitable solvent is recommended after the Digitrate has been used with crystalliz-
ing fluids. This will preserve the smooth action of the piston and free action of the inlet and outlet valves. If the inlet
valve does stick and is not freed by flushing, it may be freed by gently inserting a thin rod into the inlet aperture and
gently pushing the ball off its seating. Re-check unit for operation.
4 Empty the instrument completely after cleaning.
5 Note; All maintenance should be carried out wearing suitable protective clothing and eyeshield. If in doubt, consult your
safety officer.

Sterilization/Autoclaving

Note: The electronic display head cannot be sterilized or autoclaved. Chemical sterilization will damage electronic compo-
nents. Autoclaving will cause permanent damage to the electronic components and the battery may explode.
Before sterilization or autoclaving, please follow the maintenance 'flushing out procedure'.
Sterilization/autoclaving is carried out to 'fluid-path' components only.
Chemical sterilization is permissible by soaking the 'fluid-path' components overnight in a dilute (1:10000) solution of
Sodium Hypochloride. The Digitrate should be rinsed well in sterile, distilled water if the latter method is used.
Autoclaving of 'fluid-path' components is permissible at 121°C, 2 bar, after the normal cleaning procedure has been carried out.
Fluid-Path disassembly procedure
Disassembly should only be undertaken AFTER the unit has been cleaned, using the standard cleaning procedure described
above.
Undo the threaded platform ring (4) of the base platform and remove the electronic display head (2) together with the PTFE
piston (7), piston rack (5) and polypropylene protection sleeve (3) from the platform base (10). Take care not to lose the FEP
'O' ring (9) which is mounted inside the platform recess.
Slide the glass barrel (8) off the piston (7) and lay it in a safe place. Turn the titrate wheels (1) down until the piston rack
(5), together with the PTFE piston (7), disengages from the electronic display head (2) and slide them back into the glass
barrel (8) from the bevelled edge end taking care not to damage the piston when inserting it into the glass barrel.
Place these components and the threaded base platform (10) (with dispense tube (12) and protection cover (13) attached)
together with PTFE inlet (14) on a suitably soft surface within the autoclave in order to avoid metal contact.
Steam sterilization of the piston outside the glass barrel may damage it.
Do not use hard tools to scrape off residue of reagent from the piston.
Do not use force in assembly or dissassembly.
Operator Instructions
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