9 Deforest Street, Amityville, New York, 11701 USA
www.romanoff.com
25
Installation and Starting of Operation
7.5
Use of Piping and Hoses
For air-side connection of dust vacuum and filter systems, you can use all standard hoses
with diameters of 44-250 mm.
Depending on the inner diameter, appropriate adapter pieces must be used.
In addition, dust vacuum systems can be connected using standard ventilation pipe systems.
During installation, pay attention to the following:
•
Observe firm and tight seating of hoses or piping to the extraction system; if in
doubt, secure hoses or pipes with hose clamps, screws or other suitable means.
•
Hoses generally have a high air resistance and should therefore be kept as short
as possible.
•
Conduct/lay hoses as straight as possible, without bends, kinks or sagging, as
otherwise dust deposits, high air resistance and increased wear can occur.
•
When selecting hoses and piping, pay attention to their chemical and thermal
resistance. These must be suitable for the operators process. The temperature
range for hoses is usually between 40 and 70C°.
•
For spark-generating processes, plastic hoses should not be used without a spark
arrestor or spark extinguisher installed upstream of the hose.
•
Do not extract flames into hoses.
•
A reference value of 15m/s is recommended for the flow velocity. Please observe
Abbildung 18.
If the hoses are unsuitable, defective or loose, harmful substances can
make their way into the ambient air.
Especially in laser processes with smoke and nano dusts as emissions,
deposits in hoses, pipes and on extraction elements cannot be
completely avoided. These deposits can become loose and leak out, e.g.
when the hose is changed.
Check hoses, pipes and sensing or extraction elements regularly for
damage, contamination and wear. Replace or clean these as required.
When connecting pipes and hoses, make sure that the mechanical or
electrical safety as well as the stability of the dust vacuum and filter
system or its accessories are not impaired.
