Version March 2022
EN
11
2.00.177 - 1 User’s Manual
D Ü P E R T H A L S i c h e r h e i t s t e c h n i k G m b H & C o . K G
Frankenstr. 3
63791 Karlstein, Germany
Malfunction
Possible Cause
Correction of Malfunction
Rotation of fan not
smooth (heavy
vibrations)
Foundations prone to vibrating
Deposits formed on the impeller
Damaged impeller
Install dampers against foundations/fan.
Clean impeller.
Consult with manufacturer.
Insufficient fan
performance
Impeller turning in the wrong direction
Revert direction of rotation.
Current consumed by
motor too high
Chokes only partially open or not at all
Too heavy flow restrictions in suction and/or
exhaust lines
Motor winding defective
Seafety switch not properly set
Check chokes.
Reduce restrictions; consult with manufacturer.
Consult with manufacturer.
Properly set safety switch.
Scratching noises
Motor winding defective
Impeller jammed
Foreign body between impeller and enclosure
Consult with manufacturer.
Check impeller.
Remove foreign body.
Sudden drop of
performance
Suction or exhaust line not airtight
Connector sleeve damaged
Check pipelines.
Replace sleeve.
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Contact Details
Düperthal Sicherheitstechnik GmbH & Co. KG
Frankenstr. 3
Tel.: +49 6188 9139 0
63791 Karlstein, Germany
Fax: +49 6188 9139 121
Web: www.dueperthal.com
E-mail: [email protected]
Info
We reserve the right to change technical specs of the unit
without prior notice.
Pursuant to the directive 2012/19/EU on Waste Electrical and Electronic
Equipment (so-called WEEE Directive), equipment that was manufac-
tured or distributed by ourselves may be returned to us. To discuss the
exact procedure we will follow, please contact us with the details above.
We also declare that the equipment manufacture conforms to the directive
2011/65/EU on the restriction of the use of certain hazardous substances
in electrical and electronic equipment (so-called RoHS Directive).
