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SILVER M
INSTALLATION – OPERATING - MAINTENANCE
The measured values must not exceed the rated values (hence, the
motor rated performance) depicted on the type data plate. Shut off
the unit immediately if an over-current situation exists. If a
dissimilar phase current exists, check the motor connection.
The manufacturer's specifications for maximum motor-ambient
temperature should be observed.
Any combination of frequency converter, motor and fan can vibrate
at one or multiple frequencies. These vibrations must be determined
during the commissioning process and suppressed with the
frequency converter.
Maintenance
The ventilator should be cleaned as necessary in order to
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prevent an out-of-balance condition.
Check the bearing and re-lubricate as necessary. Re-
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lubrication deadlines must be respected!
Check the vibration damper for function.
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Check attachment bolts and re-tighten as necessary.
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If problems are detected (noises), check ventilator and motor
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bearings.
If problems are detected (vibrations), check the ventilator
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running wheel without the v-belt for out-of-balance condition
(the running wheel must come to a rest in any position).
Removal from service
For lengthy periods of downtime, the ventilator should be turned 1x
per month in order to prevent one-sided loading of the bearing.
For periods of downtime longer than 3 months, the v-belt should be
removed in order to prevent spot-loading of the bearing.
Prior to re-commissioning bearings with a re-lubrication adapter,
remove the old grease and re-lubricate. The directives of the
ventilator manufacturer must be observed.
5.3. Belt drive (ventilator)
Commissioning
Prior to commissioning, check for correct tension and alignment.
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 necessary.
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
A direct start-up must be avoided for flat belts. The belt can run off
of the drive due to sudden application of force.
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.
It must be heeded that the belt tension is checked after the first 100
operating hours, and re-tensioned as necessary.
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