5.3 Belt drive (fan)
Commissioning
Prior to commissioning, check for correct tension and
alignment.
V-belts
Subsequent to commissioning, the v-belt drive should be
run under load. After ca. 30-60 minutes, the tensioning
device should be readjusted.
It must be heeded that the belt tension is checked after
the first 50 operating hours, and re-tensioned as neces-
sary. The v-belt must neither be too taut nor too loosely
adjusted, as this can reduce the operating life of the motor
and ventilator bearings.
Flat belts
Avoid direct start. The sudden force may cause that the
belts slide off the drives.
Stretching of flat belts
Two thin measurement markings are located on the upper
side of the belt. The belt should be tensioned until the
rated value of the measurement marking gap is obtained
(2% belt stretch).
The drive must be turned several times in order to check
the tension once again.
Example for belt tension with measurement marks. The text on
the belt says:
GT 28P 2875 x 50 mm Without tension 500 mm
Whith tension 510 mm
It must be heeded that the belt tension is checked after
the first 100 operating hours, and re-tensioned as neces-
sary.
5.4 Sound attenuator
Commissioning
Check the baffle for contaminants and damage. Clean or
repair with the proper tooling as necessary
Do not damage the surface.
5.5 Filters
General
Sufficient air filtering and regular filter changes will reduce
the dust content in the air and prevent contamination of
the equipment and ducting system. Excessive filter service
usage degrades the air quality due to odours. Moisture
penetration of the filter must be avoided for hygienic
reasons.
The filter should be checked at regular intervals and
replaced as necessary, dependent upon operating condi-
tions. As a rule, if the manufacturer’s prescribed final pres-
sure drop is exceeded, the filter should be replaced. When
replacing the filter, the leak-tightness around the filter
adapter frame should be checked.
Damage or pressure marks on the filter surface are to be
avoided without fail, as otherwise the filter can rip during
operation.
Filter category Recommended final
pressure drop
G1-G4 150 Pa
F5-F7 200 Pa
F8-F9 300 Pa
Filter resistance can be determined by means of a differen-
tial pressure measurement using an inclined-tube manom-
eter, or electronic manometer.
The pocket type filter is not reclaimable. When the final
resistance is reached, the pocket type filter must be
replaced with a new one.
Replacement of individual filter elements is allowable only
in case of damage to the individual elements, and as long
as the previous replacement was no longer than 6 months
back.
When replacing the filter insert, a breathing protection
mask should be worn and the local environmental protec-
tion regulations observed.
Dust laden filters pose an increased health risk.
Filters must be stored in a dry, dust-free environment.
A filter should no longer be used upon expiration of its
minimum shelf life.
Commissioning
Filter inserts are secured in the mounting frame with
tensioned fastening clamps. Filter inserts elements must
not be pinched or clamped. Check the filter insert for an
air-tight seat in the mounting frame.
Prior to commissioning, the filter units must be checked
for damage.
EN.SILVER.110322
The company reserves the right to make design changes without prior notice.
18 www.swegon.com
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