Memmert ICH 256 Climate Chambers (Generation 2003) - Manual (Page 26)

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Operation and Control
5.4 Checking interior lighting
(only for corresponding model)
As the light output and working life of fluorescent tubes may decline according to operational
demands over time, it is necessary to check the illuminance and condition of the fluorescent
tubes prior to every test.
1. For cooled incubators equipped with UV lighting: Wear UV safety goggles.
2. Switch on the interior lighting (refer to page 31 )
3. Check if all fluorescent tubes are working. If not: Replace the respective tube set (refer to
page 66 )
4. Measure the illuminance with a conventional lux meter by introducing it into the cham-
ber and reading off the measured illuminance. Replace the fluorescent tubes if the light
output is insufficient (refer to page 66 ).
5.5 Loading the cooled incubator
Warning!
When loading the appliance with an unsuitable load, poisonous or
explosive vapours or gases may be produced. This could cause the
cooled incubator to explode, and people could be seriously injured
or poisoned. The chamber may only be loaded with materials which
do not form any toxic or explosive vapours when heated up, and
which cannot ignite. If there is any doubt as to the composition of
materials, they must not be loaded into the cooled incubator.
Caution:
Check the chamber load for chemical compatibility with the materials of the cooled
incubator (see page 13 ), since considerable damage could otherwise occur to the
chamber load, the appliance or the surroundings.
The cooled incubator is not explosion-proof (it does not comply with the German workplace
health & safety regulation VBG 24) and is therefore not suitable for drying, vaporising and
branding paints or similar materials the solvents of which could form an explosive mixture
when combined with air. Potentially explosive gas-air mixtures must not form, neither in the
interior of the chamber nor in the direct vicinity of the appliance.
Heavy dust formation or aggressive vapours in the chamber or in the vicinity of the appli-
ance could lead to sedimentation in the chamber interior and as a consequence, could result
in short circuits or damage to electrical parts. For this reason, sufficient measures should be
taken to prevent large clouds of dust or aggressive vapours from developing.