Manual

26
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.