9 Deforest Street, Amityville, New York, 11701 USA
www.romanoff.com
6
Description
During installation, care must be taken to ensure that the outflowing air, when being
recirculated into the hall, can not whirl up any dust/deposits from floors or other surfaces. For
this purpose, as an example, the air outlet plate can be turned or the air can be conducted
directed with a 90° elbow.
Please also observe the notes in section: “Use of Piping and Hoses“.
Extraction
When designing/planning extraction elements according to standard, the manufacturer's
specifications must be observed. A minimum air velocity of 0.4m/s (see 15012-2) must be
achieved during extraction. For designing/planning, the minimum volume flow rate in the
most unfavourable condition (filter saturated) of the filter and extraction system are required.
Examples
:
Filter and extraction
system
Min. extraction
capacity*
Max.
extraction
capacity
Remark
TFS 500
250m³/h
400 m³/h
RMS values
TFS 1000
500m³/h
850 m³/h
RMS values
*for up to 75% saturated filter (the warning: „Filter change required“ is indicated)
Please also observe the notes in sections: “Use of Extraction Elements”, “Use of Piping and
Hoses” & “Filter Monitoring”.
The examples apply for the TFS series. As a rule, dust vacuum filter and extraction systems
are operated in combination with a closed laser system. In this case, this laser system records,
controls and signals the combination of laser system and extraction.
To achieve the protection targets of the standards DIN EN 15012, 60335 -2-69 AA, the
overall system must be designed according to the following procedure:
Determination of the required volume flow with 0.4m/s flow velocity at the extraction
point plus 30% air volume (see section 8.2)
Dimensioning of pipes and hose lines according to the flow velocities (see section 7.5)
Ensuring the extraction capacity at the extraction point (see paragraph “
Monitoring
of the
Extraction Capacity“ below).
Ensuring of the signalling (see paragraph “Signalisierung“ below).
Maintenance, filter replacement and disposal, in particular the disposal of used filter
elements in airtight packaging, in accordance with the provisions of this Operating and
Maintenance Manual.
Monitoring of the
Extraction Capacity
Options for monitoring the extraction capacity
Use of a volume flow monitoring device in the hose or pipe in conjunction with a dust
vacuum signal module. Please refer to the section: ”Monitoring the Extraction Capacity at
the Extraction Location“.
Use of a volume flow monitoring device in the hose or pipe which is evaluated by the
process control system and stops the process in the event of an error.
