S
CHMALZ
SCPSb
-
2
4-10
P
NEUMATIC CONNECTION
Use only well-maintained compressed air (air or neutral gas according to EN 983, fil-
tered to 20 µm, oiled or unoiled).
High-quality compressed air is important to ensure a long service life for the ejector.
If there are heavy accumulations of dirt on the suction-side, we recommended you use
additional filters, e.g. VFI 6/4 for SCPSb 07/10 or VFI 8/6 for SCPSb 15
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 per-
formance 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
)
SCPSb
performance class
Line cross-section (internal diameter) [mm]
1)
Compressed air side
Vacuum side
2-07
4
4
2-09
4
4
2-14
4
6
1)
Based on a maximum hose length of 2 m. For longer hose lengths, the cross sections must also be larger and you
must use corresponding adapters!
E
LECTRICAL CONNECTION
The ejector may only be operated using power supply units with protected extra-low
voltage (PELV). The system must incorporate safe electrical cut-off of the power supply
in compliance with EN60204.
Schmalz connection lines may be used to connect the ejector directly to the controller, e.g.
Art.-no. 21.04.06.00086, 3m
When you connect the valves, you don’t need to check the polarity.
