22
Inhalation of or contact with media
such as poisonous liquids, gases, spray
mist, vapours, dusts or biological
and microbiological materials can be
hazardous to user.
• Set up the device in a spacious area on an even, stable, clean,
non-slip, dry and fireproof surface.
• Ensure that there is sufficient space above the device as the
glass assembly may exceed the height of the device.
• Prior to each use, always check the device, accessories and
especially the glass parts for damage. Do not use damaged
components.
• Ensure that the glass assembly is tension-free! Danger of
cracking as a result of:
- stress due to incorrect assembly,
- external mechanical hazards,
- local temperature peaks.
• Ensure that the stand does not start to move due to vibrations
respectively unbalance.
• Beware of hazards due to:
- flammable materials,
- combustible media with a low boiling temperature,
- glass breakage.
Only process and heat media that has a
flash point higher than the adjusted safe
temperature limit of the heating bath
that has been set. The safe temperature
limit of the heating bath must always be
set to at least 25 °C lower than the fire
point of the media used.
• Do
not
operate the appliance in explosive atmospheres, with
hazardous substances or under water.
• Only process media that will not react dangerously to the
extra energy produced through processing. This also applies
to any extra energy produced in other ways, e.g. through light
irradiation.
• Tasks with the device must only be performed when operation
is monitored.
• Operation with excess pressure is not permitted (for cooling
water pressure see “Technical Data“).
• Do not cover the ventilation slots of the device in order to
ensure adequate cooling of the drive.
• There may be electrostatic discharges between the medium and
the drive which could pose a direct danger.
• The appliance is not suitable for manual operation (except lift
movement).
• Safe operation is only guaranteed with the accessories described
in the “Accessories” chapter.
• Refer to the operating instructions for the HB 10 heating bath.
• Refer to the operating instructions for the accessories, e.g.
vacuum pump.
• Position the positive pressure outlet of the vacuum pump under
a fume hood.
• Only use the device under an all side-closed exhaust, or a
compa rable protective device.
• Adapt the quantity and the type of distill and to the size of
the distillation equipment. The condenser must work properly.
Monitor the cooling water flow rate at the condenser outlet.
• The glass equipment must always be ventilated when working
under normal pressure (e.g. open outlet at condenser) in order
to prevent a pressure build-up.
• Please note that dangerous concentrations of gases, vapors
or particulate matter can escape through the outlet at the
condenser. Take appropriate action to avoid this risk, for
example, downstream cold traps, gas wash bottles or an
effective extraction system.
• Evacuated glass vessels must not be heated on one side; the
evaporating flask must rotate during the heating phase.
• The glassware is designed for operation under a vacuum of
down to 2 mbar. The equipment must be evacuated prior to
heating (see chapter“Commissioning”). The equipment must
only be aired again after cooling. When carrying out vacuum
distillation, uncondensed vapours must be condensed out or
safely dissipated. If there is a risk that the distillation residue
could disintegrate in the presence of oxygen, only inert gas
must be admitted for stress relief.
Avoid peroxide formation. Organic
peroxides can accumulate in distillation
and exhaust residues and explode while
decomposing! Keep liquids that tend to
form organic peroxides away from light,
in particular from UV rays and check
them prior to distillation and exhaust for
the presence of peroxides. Any existing
peroxides must be eliminated. Many
organic compounds are prone to the
formation of peroxides, e.g. dekalin,
diethyl ether, dioxane, tetrahydrofuran,
as well as unsaturated hydrocarbons,
such as tetralin, diene, cumene and
aldehydes, ketones and solutions of
these substances.
The heating bath, tempering medium,
evaporation flask and glass assembly
can become hot during operation and
remain so for a long time afterwards!
Let the components cool off before
continuing work with the device.
Avoid delayed boiling! Never heat the
evaporating flask in the heating bath
without switching on the rotary drive!
Sudden foaming or exhaust gases
indicate that flask content is beginning
to decompose. Switch off heating
immediately. Use the lifting mechanism
to lift the evaporation flask out of the
heating bath. Evacuate the danger zone
and warn those in the surrounding area!
DANGER
DANGER
CAUTION
CAUTION
WARNING
