S
CHMALZ
SCPS
5-21
P
NEUMATIC CONNECTION
Use only well-maintained compressed air (air or neutral gas according to EN 983, filtered
to 5 µm, oiled or unoiled).
High-quality compressed air is important to ensure a long service life for the ejector.
Dirt particles or foreign bodies in the ejector connections, hoses or pipelines can lead to
partial or complete ejector malfunction.
Hoses and pipelines should be laid such that distances are minimized.
If the internal diameter on the compressed air side is too small, insufficient compressed
air will be supplied. This prevents the ejector from performing as specified in the perfor-
mance data.
Excessive flow resistance occurs if the internal diameter on the vacuum side is too small.
This leads to both a reduction in suction capacity and increased evacuation times. Blow-
off times are also lengthened.
Hose lines must be laid without bends or crimps.
Only use hoses or pipes with the internal diameters recommended for the ejector. If this
is not possible, use the next largest internal diameter.
R
ECOMMENDED LINE CROSS
-
SECTIONS
(
INTERNAL DIAMETERS
)
SCPS
performance class
Line cross-section (internal diameter) [mm]
1)
Compressed air side
Vacuum side
07
4
4
10
4
4
15
4
6
1)
Based on a maximum hose length of 2 m. For longer hoses, the cross-section should be correspondingly larger.
