UfCKAIlUN
Operating guidelines
Remember to put on protective garments, e.g. gloves, goggles, mask, body protection, remove
any items of jewellery before starting work.
Do not cover or obstruct the ventilation or exhaust vents in the unit housing. Always keep these
vents free of dust and dirt
• Loading:
Circulating air conducts the heat to the samples in the unit. Make sure that the samples are
evenly distributed on the trays, and that they are arranged in such a way as to ensure an
unimpeded (low of warm air throughout the cabinet, in order to prevent local overheating. Do not
position the samples too close to the inner walls.
Fig. 4/4: Loading diagram
:i a
"a" = approx. 1/10 of the internal
dimensions
Be careful not to damage the temperature sensors in the inner chamber when loading.
I- Ji Never place samples on the floor of the chamberl
Keep the inner surfaces of the chamber free of dust and dirt. Never use aggressive chemicals
which could damage the stainless steel finish.
Continually heating and cooling the unit over wide temperature ranges can detrimentally affect its
service life If used more frequently, it is better to keep the unit running in continuous mode at
moderate temperatures.
A If not used for an extended period, disconnect the unit from the power supply.
Shutdown
• Remove the samples from the chamber
• Allow the heating unit to cool down to room temperature
• Switch the unit off and disconnect from the mains
• Clean the inside surfaces of the chamber
(also refer to the section on DECONTAMINATION, CLEANING ...)
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50 042 750
Issue: May. 1994
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