Servicing And Maintenance; Fault Causes - Helios InlineVent KR EC Série Notice De Montage Et D'utilisation

Installation and Operating Instructions
EN
CHAPTER 8
SERVICING AND
MAINTENANCE
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WARNING
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WARNING
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EC Rectangular Centrifugal Fans – InlineVent
8.0

Servicing and maintenance

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Touching live parts will lead to electric shock.
Before any servicing and maintenance work, isolate the fan from the mains power supply and protect
against being switching on again!
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Access to the terminal compartment is only permitted with a disconnected power supply and after a
waiting period of 5 minutes.
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The rotating impeller can crush fingers.
Before any servicing and maintenance work, isolate the fan from the mains power supply and protect
against being switching on again!
– Excessive deposits of dirt, dust, grease, etc. on the impeller, motor, protection guard and, above all, between the
housing and the impeller, are not permitted, as these can lead to an unbalance in the impeller, overheating of the
motor or the blocking of the impeller. In such cases, the unit must be cleaned.
– In cases of longer periods of standstill, maintenance must be carried out when the unit is restarted.
– In case of standstill or storage for more than 2 years, the motors must be replaced.
The following must be checked:
• Secure attachment of the fan to the subsurface / system, replace in case of doubt
• Remove contaminant deposits
• Mechanical damage, disconnect unit, replace damaged parts
• Tight fit of screw connections, do not loosen screws in the process!
• Casing quality (cracks, brittleness of the plastic)
• Free movement of the impeller, impeller does not move freely, see Fault causes 8.1
Wear protective gloves when checking unhindered running of impeller!
• Bearing noises
• Vibrations – see Fault causes 8.1
• Current consumption according to type plate – see Fault causes 8.1
Fault Causes
Fan does not start – No voltage
– Impeller blocked
– Motor blocked
Fan does not turn – Mains voltage failure
(no longer turns)
– Temperature monitoring system
has triggered
– Fuse has tripped
– Impeller is blocked or contami-
nated
– Shorted coil in motor
Fuse has tripped
– Supply line or connection
damaged
– Connected incorrectly
Vibrations – Contamination
– Attachment-related resonance
– Grinding impeller
Abnormal noises
– Bearing damage
– Mechanical damage
Fan no longer perfor- – Insufficient air delivery
ming
– Incorrect voltage
(speed)
– Bearing damage
– Contamination
– Insufficient backflow
® KR EC ... / SKR EC
Solution
Check mains voltage
Check connection according to wiring diagram
Clear blockage, clean, replace if necessary
Contact Helios customer services
Check mains voltage
- Check / clear supply and extract air flow
- Check air flow media, ambient temperature
- Check mains voltage
See „Fuse has tripped"
Clear blockage, clean, replace if necessary
Contact Helios customer services
Replace parts, replace motor if necessary
(Contact Helios customer services)
Check, modify connection
Clean
Check or repair attachment
Clean impeller, replace if necessary
Contact Helios customer services
Carry out maintenance
Check/clear inflow and outflow
Check/modify connection
Contact Helios customer services
Clean
Widen backflow openings
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