MiniVent M1/
150
F
Installation and Operation Instructions
17
8.0 Servicing and maintenance
WARNING!
When dismantling, live parts which may result in electric shock upon contact may be exposed.
Before dismantling, isolate the fan from the mains power supply and secure against being switched on again!
– The units are basically maintenance-free, there is no provision for user-maintenance. Nevertheless, all necessary
maintenance work must be carried out by trained electricians!
– 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 cases of longer periods of standstill, maintenance must be carried out when the unit is restarted.
The following must be checked:
• Secure mounting of the fan to the subsurface / system, replace in case of doubt
• Remove contaminant deposits
• Mechanical damage, decommission unit, replace damaged parts
• Tightness of screw connections, do not loosen screws in the process!
• Housing surface coating (e.g. rust, paint defects)
• Freewheeling of the impeller -> Is the impeller not running freely- see Fault causes 8.1
• Bearing noises
• Vibrations– see Fault causes 8.1
• Power consumption according to type plate - see Fault causes 8.1
8.1 Fault causes
NOTE!
In case of a blocked impeller or motor, the motor will commence restart attempts in 3 second intervals.
CHAPTER 8
SERVICING AND MAIN-
TENANCE
WARNING
UK
NOTE
Error/fault
Causes
Troubleshooting
Fan does not start
– No voltage
Check mains voltage
Check connection according to circuit diagram
– Defective humidity sensor
Contact Helios customer services
– Impeller blocked
Clear blockade, clean, replace impeller if necessary
– Motor blocked
Contact Helios customer services
– Motor just deactivated
Wait for activation guard (15 sec.)
Fuse blows
– Short-circuited coil in motor
Contact Helios customer services
– Supply line/connection damaged
Replace parts, replace motor if necessary
(Contact Helios customer services)
– Connected incorrectly
Check connection, change
Vibrations
– Contamination
Clean
– Mounting-related resonance
Check/repair mounting
Abnormal noises
– Grinding impeller
Clean impeller, replace if necessary
– Bearing damage
Contact Helios customer services
– Mechanical damage
Carry out maintenance
Fan does not perform
(speed)
– Insufficient air supply
Check/clear inflow and outflow
– Incorrect voltage
Check/change connection
– Bearing damage
Contact Helios customer services
– Contamination
Clean
– Insufficient backflow
Enlarge backflow openings
