Delta 30 User Manual download pdf (Page 16)

User Manual | DELTAGuard | Description of the Key Components

DIN 25466 (radio-isotope fume cupboards)

Types of fume cupboards 2.405 mm 2.730 mm

Bench mounted fume cupboard



Fume cupboard (Filter on top)



Fume cupboard (Filter next to)



3.4 Operating Range

Every type of fume cupboard has a certain air technical operating range. Within this range the extract air volume

may fluctuate. Relevant specifications are shown on the type labels of the fume cupboards and in the technical

documents.

3.5 Fume Cupboard Function Display

According to the DIN EN 14175 each fume cupboard type is equipped with an extract air function display. This

function display is installed at the side of the fume cupboard. Each fume cupboard shows a certain pressure

drop that depends on the extracted air volume. Measurements of a fume cupboard´s pressure drop is usually

made through a differential pressure measurement between the laboratory and the extract air spigot of the la-

boratory. In this case the laboratory fume cupboard represents the streamed obstacle. The measuring outcome

results are indicated by a LED.

Fume cupboard function display Betriebszustand

Display (LED)

green Normal operation

green, ﬂashing Extract air volume too high

yellow, ﬂashing

Sash above 500 mm opening height

red

Extract air volume too low

red, ﬂashing

Power failure

green, ﬂashing Due for maintenance

An additional turn-off warning signal is released.

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Delta 30 User Manual Page 16