LEYBOLD SCROLLVAC plus - Hazards Caused by Materials and Substances

sources occurring under rare or expected malfunction. (Reference ATEX137
1992/92/EC).
The notations used in these ratings are as follows:
Equipment to be used in a potentially explosive atmosphere
II Equipment group II - non mining equipment as dened in direc
tive 2014/34/EU
3 Equipment category - suitable for hazardous area zone 2 as de
ned in directive 2014/34/EU
G Explosive atmosphere caused by gases, vapours or mists
Ex h Non-electrical equipment for explosive atmospheres, regardless
of which type of protection is used; see ENISO80079-37. Non-
electrical equipment for explosive atmospheres
IIC Suitable for ammable gas group IIC - (also Hydrogen, Acetylene,
Carbon disulphide)
T4 Temperature class - <135°C
GC Equipment protection level (EPL) as dened in ENISO80079-36
X Specic conditions of use of the equipment. The special condi
tions and notes provided in the Operating Instructions will be
applicable.
When ammable materials are present within the equipment you must:
▪ Not allow air to enter the equipment.▪
▪ Make sure the system is leak tight.▪
▪ Use an inert gas purge (for example, a nitrogen purge) to dilute any▪
ammable gases or vapours entering the pump inlet, and/or use an inert
gas purge to reduce the concentration of ammable gases or vapours
in the pump and in the exhaust pipeline to less than one quarter of the
gases’ published lower explosive limits (LEL).
▪ If higher concentration of ammable gases or vapours is requested,▪
contact us for support.
Do not pump pyrophoric materials, process debris could produce an ignition
source on the scroll surface.
Do not locate the pump in an ATEX zoned area, the ATEX specication is
not applicable for external atmospheres.
When planning to pump hazardous substances with this pump, read the
related chapters in the Safety Booklet and in these Operating Instructions
rst. You can download the Safety Booklet from the Leybold homepage.
2.5Hazards caused by materials and substances
WARNING: EXPLOSION HAZARD
Risk of explosion. The product in its standard version is not suited for operation in
explosion hazard areas.
12 300668736_002_C7 - © Leybold
Important safety information