Servicing And Maintenance; Cleaning; Fault Causes - Helios RR EC Série Notice De Montage Et D'installation

Installation and Operating Instructions
EN
CHAPTER 8
SERVICING AND
MAINTENANCE
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WARNING
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WARNING
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WARNING
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Centrifugal In-line EC Duct Fans RR EC..
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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Terminal compartment access is only permitted after power supply is disconnected and 5 min. wait. period.
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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!
– In principle, the units are maintenance-free, there are no user maintenance provisions.
– 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 8.2
Wear protective gloves when checking unhindered running of impeller!
• Bearing noises
• Vibrations – see Fault causes 8.2
• Power consumption according to type plate – see Fault causes 8.2
8.1

Cleaning

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WARNING!
An insulation/installation fault may result in electric shock!
Before cleaning, isolate the fan from the mains power supply and protect against being switching on again!
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WARNING!
The unexpected rotating impeller can crush fingers.
Before cleaning, isolate the fan from the mains power supply and protect against being switching on again!
– Clean casing and impeller with a damp cloth
– The motor must not come into contact with water!
– Do not use aggressive cleaning agents that could damage the paintwork!
– High pressure cleaners or water jets are not permitted!
8.2

Fault causes

Fault
Fan does not start
Fan does not turn
(no longer turns)
Fuse has tripped
Vibrations
Abnormal noises
Fan no longer perfor-
ming (speed)
Causes
– No voltage
– Impeller blocked
– Motor blocked
– Mains voltage failure
– Thermal contact (TK) has trigge-
red
– Fuse has tripped
– Impeller blocked or
contaminated
– Shorted coil in motor
– Supply line or connection
damaged
– Connected incorrectly
– Contamination
– Attachment-related resonance
– Grinding impeller
– Bearing damage
– Mechanical damage
– Insufficient air delivery
– Incorrect voltage
– Bearing damage
– Contamination
– Insufficient backflow
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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 inflow and outflow
- Check transport media, ambient temperature
- Check supply voltage
«Fuse has tripped»
Clear blockage, clean, replace impeller 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