All-Purpose Fume Cupboards; Improper Use - Wesemann SYSTEM DELTA 30 User Manual

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User Manual | Laboratory Fume Cupboard | Safety
Such changes may impair the flow behaviour and thus the protective effect of the laboratory fume
cupboard.
• Underneath larger structures by which, due to their surfaces, a kind of "slipstream" is created on the
worktop, sufficient clearance (at least 5 cm) (floor clearance) to the worktop, as well as a sufficiently
large clearance to the sash (at least 10 cm) must be observed.
The fume cupboard may not be used in a potentially explosive atmosphere. Wesemann GmbH offers EX fume
cupboards for such areas.
2.3.2

All-purpose fume cupboards

All-purpose fume cupboards are table fume cupboards, fume cupboards for low ceilings/spaces, low work-
level cupboards and walk-in fume cupboards. The all-purpose fume cupboards are not special fume cupboards
according to DIN EN14175-7:2012. They are therefore:
• not fume cupboard for high thermal loads
• not fume cupboards for high thermal loads in conjunction with acid digestions
• not perchloric acid fume cupboards
• not hydrofluoric acid fume cupboards
• not micro-biological safety work benches
• not suction boxes with air recirculation
• not radionuclide fume cupboards
They may not, therefore, be used as the said special fume cupboards and their applications.
2.4

Improper use

Any use which is not mentioned in the section 2.3 Proper use is considered to be improper use.
2.5 Obligation of the operating company
The operating company undertakes only to allow persons to work on fume cupboards: