Filter / Change Of Filter - HEYLO PF 1400 Bedienungsanleitung

When the change of filter indicator lights up during operation, the pre-filter or the main filter has to be
replaced immediately. More information is rendered in the chapters titled "Filter exchange" and
"Maintenance".
Laying of hoses: The connecting hose of PF 1400 or rather of the entire unit itself has to be laid as
close as possible to the source of the air contamination. With increasing distance of the suction hose
from the origin of the air contamination, the share of air contamination decreases disproportionately.
For improved acquisition at the point of origin HEYLO provides a base stand to hose connection
socket on the suction side. In order to place the hose ends at a higher position, the hoses can be
attached to telescope rods using lashing straps.
Ensure move of the suction hoses in the work area as close to time as possible. Hoses should be laid
without kinks, if possible, and in a straight line to the air purifier. If and when necessary, auxiliary
constructions have to be set up for overcoming differences in height, for example (by chamfering of
supporting wood nailers, for example). In the area of the suction hoses, the constriction of the cross-
section by kinks increases the suction air flow. In the exhaust air hose, the exhaust air flow counter the
cross-sectional constriction by kinks.
The suction hose has to be arranged in such a way that contaminated air is removed from the
breathing area of the employees, and fresh air and/or purified air is supplied to the employees.
The purified exhaust air of the air purifier has to be passed to well ventilated areas and/or to the
outside. A return of purified air into the working area is permitted only, if sufficient base ventilations
with fresh air is ensured at the same time. A second air purifier may be set up for air ventilation, if and
when necessary. Please observe the national health and safety regulations.
Required air exchange: The required air exchange depends on the type and volume of air pollutants.
Correspondingly, air exchange rates of between triple and 20-fold of the room volume may be
required.
The professional associations recommend a 15-fold air exchange. In case of quartziferous A dusts,
the occupational exposure limit value is 1.5 mg/cum, and in case of E dusts 10 mg/cum (TRGS 900).
Example: A 15-fold air exchange is required for a room volume of 40 cum.
The required air volume is 15 x 40 cum, thus at least 600 cum/h. When the filter
display has been activated, HEYLO PF 1400 continues to have an output of approx.
600 cum/h.
A sufficient air exchange is thus ensured.
The precise requirements are listed in the installation guidelines mentioned in chapter (8).

(6) Filter / change of filter

Filter system: The PowerFilter PF 1400 uses a two-stage filter system which uses the latest HEPA
filter technique. The first filter stage consists of one or two pre-filters, and the main filter stage of a
robust HEYLO pleated filter in various filter classes.
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