Product Manual

2 Description
2.1 Description of filters
Type Description Air flow
DD+ • Coalescing filters for general purpose protection, removing solid particles,
liquid water and oil aerosol
• Air purity class in a typical installation: [2:-:3]
from inside to
outside
PD+ • High efficiency coalescing filters, removing solid particles, liquid water and
oil aerosol
• Air purity class in a typical installation and when preceded by a DD+ filter:
[1:-:2]
from inside to
outside
UD+ • High efficiency coalescing filters, removing solid particles, liquid water and
oil aerosol
• Air purity class in a typical installation: [1:-:2]
from inside to
outside
DDp+ • Particulate filters for dust protection
• Air purity class in a typical installation: [2:-:-]
from outside
to inside
PDp+ • High-efficiency particulate filters for dust protection
• Air purity class in a typical installation: [1:-:-]
from outside
to inside
QD+ • Oil vapour and odour removal filters
• Air flows through the activated carbon which is contained in the QD filter
element and which absorbs oil vapours and odours
• Air purity class in a typical installation: [1:-:1]
from inside to
outside
The QD+ filter does not remove methane, carbon monoxide, carbon dioxide or other toxic
gases and fumes, and therefore is not to be used for breathing air purposes.
Instruction book
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