IKA RV 8 Mode D'emploi page 11

Inhalation of or contact with media
DANGER
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
CAUTION
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. (acc. to EN
61010-2-010)
• 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 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.
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• 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
CAUTION
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,
DANGER
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
WARNING
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!
Safety lift
When the device is switched off or the power supply disconnected,
the internal safety lift removes the evaporating flask from the
heating bath.
The safety lift at loss of power is designed for a maximum total
weight (glassware and solvent) of 3.1 kg.
Sample calculation of the maximum load with vertical glassware
and a 1 litre flask:
Condenser + receiving flask + evaporating flask + fittings=
1200 gr + 400 gr + 280 gr + 100 gr = 1980 gr
Maximum loading of solvent = 3100 gr – 1980 gr = 1120 gr
Due to the design, operation of the safety lift cannot be
guaranteed for higher loads!
When using other types of condensers such as dry ice or intensive
condensers, and also when using return distillation distributors
with slip-on condensers, it may be necessary to reduce the load by
the amount of the added weight of the glass apparatus.
Thus, prior to distillation, check whether the lift, laden with the
glassware and distillation material, rises when power is lost.
The safety lift must be checked daily prior to operation!
Attach the maximum total weight of 3.1 kg to the lift. Manually
move the lift to the lowest position and press the "Power" key on
the front panel or the main switch on the back right side of the
device.
The evaporating flask is lifted out of the heating bath.
If the safety lift does not work, please contact the IKA Service
department.
For the evaporating equipment (evaporating flask plus contents),
the maximum permissible weight is 3.0 kg! Loads greater than this
risk breakage of glass at the steam pipe!
Ensure that the safety lift has been powered down.
When working with large loads, always use low speeds.
Unbalanced loads can result in breakage of the steam pipe!
• A vacuum may be formed inside the glassware in the case of
power outage. The glassware must be vented manually.
Never operate the device when the
CAUTION
evaporation flask is rotating and the lift
is raised. Always lower the evaporation
flask into the heating bath first before
starting the rotation drive. Otherwise
hot tempering medium may be sprayed
out!
• Set the speed of the drive so no tempering medium is sprayed
out as a result of the evaporation flask rotating in the heating
bath. If necessary reduce the speed.
• Do not touch rotating parts during operation.
• Imbalance may result in uncontrolled resonance behavior of
the device or assembly. Glass apparatus may be damaged or
destroyed. In the event of unbalance or unusual noises, switch
off the appliance immediately or reduce the speed.
• The appliance does not start up again automatically following a
cut in the power supply.
• The device is only disconnected from the power supply network
if the device power switch is off or the plug is pulled out.
• The socket for the mains cord must be easily accessible.
For protection of the equipment
• The voltage stated on the type plate must correspond to the
mains voltage.
• Socket must be earthed (protective ground contact).
• Removable parts must be refitted to the appliance to prevent
the infiltration of foreign objects, liquids, etc.
• Protect the appliance and accessories from bumps and impacts.
• The appliance may only be opened by experts.
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