IKA C 6000 isoperibol Package 2/12 - Manual (Page 5)

5
Safety instructions
Read the operating instructions in full before
starting up and follow the safety instructions.
Keep the operating instructions in a place where
they can be accessed by everyone.
Ensure that only trained staff work with the
appliance.
Follow the safety instructions, guidelines,
occupational health and safety and accident
prevention regulations.
The IKA ® C 6000 global standards/isoperibol
calorimeter system may be used only in conjunction
with the decomposition vessels C 6010 or C 6012
for determination of the calorifi c values of solid
and liquid substances to national and international
standards (such as DIN 51900, BS 1016 T5, ISO
1928, ASTM 5468, ASTM 5865 and ASTM 4809).
The maximum extra energy added to the
decomposition vessel must not exceed 40,000 J
(select the test mass accordingly). The permitted
operating pressure of 230 bar (23 MPa) must not
be exceeded. The maximum permitted operating
temperature must not exceed 50 °C.
When burning substances containing metals,
ensure that the maximum energy input is not
exceeded!
Only fi ll the decomposition vessel with oxygen to a
maximum pressure of 40 bar (4 MPa). Check the
pressure setting on the pressure reducer for your
oxygen supply. Perform a leakage test before each
combustion process (see section „Leaktightness
testing“).
Some materials tend to explode when combusted
(e.g. due to formation of peroxides), which could
cause the decomposition vessel to crack. The
IKA ® C 6000 global standards/isoperibol
calorimeter may not be used for testing
explosive samples.
If the burning behaviour of a material is unknown,
it must be tested before combustion in the
decomposition vessel (risk of explosion). If you are
burning unknown samples, leave the room or
keep your distance from the calorimeter.
Benzoic acid may only be combusted in its pressed
form! Flammable dust and powder must be fi rst
pressed. Oven-dry dust and powder such as splints,
hay, straw etc. explode when combusted! Always
wet these materials fi rst! Highly fl ammable liquids
with a low vapour pressure (e.g. tetramethyl
dihydrogen disiloxane) must not directly touch the
cotton thread!
Furthermore, toxic combustion
residue in the form of gases,
ashes or condensation, for
example, is possible in the inner wall of the
decomposition vessel.
Observe the accident prevention requirements
applicable to the activity and the work station.
Wear your personal protective equipment.
When handling combustion samples, combustion
residue and auxiliary materials, please observe
the relevant safety regulations. The following
materials, for example, could pose a risk:
– corrosive
– highly fl ammable
– explosive
– bacteriologically contaminated
– toxic
Please observe the relevant regulations when
handling oxygen.
Warning: oxygen as a compressed gas is oxidising;
intensively aids combustion; can react violently
with fl ammable materials.
Do not use oil or grease!
Tubes and screwed joints for oxygen must be kept
free of grease.
Combustion gases are hazardous to
health, therefore the venting hose must be
connected to a suitable gas cleaning system
or extraction system.
At the end of the work period, close the main
valve for the oxygen supply.
Perform servicing work only when the equipment
is depressurised.
When using stainless steel crucibles thoroughly
check their condition after each experiment. If the
material gets thinner, the crucible may catch fi re
and damage the decomposition vessel. Crucibles
must not be used for more than 25 combustions
for safety reasons.
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Safety instructions