10.3 Cleaning
Regular cleaning of the fan prevents unbalance. A fi lter extends the cleaning intervals.
Recommendation: Install a fi lter monitor.
WARNING
Hazard from electrical voltage!
» Interior cleaning of the fan only by a trained electrician or trained and instructed qualifi ed personnel!
» Observe 5 safety rules for the electrical expert!
– disconnect from the power supply (all-pole),
– prevent switching on again,
– test absence of voltage,
– earthing and short-circuiting,
– protect adjacent live parts by covers and barriers.
» Switch the fan off as planned.
CAUTION
Danger from hot surfaces!
» During maintenance and cleaning wear protective gloves!
Keep casing clean and clean it if necessary with a brush.
Do not use a steel brush.
Do not use a high-pressure cleaner (“steam jet cleaner”) under any circumstances.
Do not bend the fan blades when cleaning.
Do not use any detergents for interior cleaning.
When cleaning the rotor, pay attention to balance weights which have been positioned.
10.4 Maintenance, service
The fan is by built-in for-life lubricated ball bearings as far as possible low-maintenance product. After their life time (app. 30.000 to
40.000 h), a replacement of the bearings is necessary.
In 1~motors, the capacity of the capacitor can drop in the course of life (life expectancy about 30,000 h acc. to VDE 0560-8).
WARNING
Hazard from electrical voltage!
Observe at maintenance and service:
» Rotor must stand still.
» Electrical circuit must be interrupted and secured against restarting.
» Observe the rules for safe work.
Pay attention to a non-typical noise from bearings.
For replacement use only original ball bearings (special grease) of Systemair.
For all other damages (e.g. damage to winding) please contact our Service Department. Defective fans must be replaced com-
pletely. Repairs may be accomplished only in the company of manufacturer and by the manufacturer. You fi nd the address on the
back of these operating instructions.
10.5 Spare parts
NOTE
You can obtain original replacement parts from Systemair. They have been adapted to the roof fans.
Only use original replacement parts.
In case of order of spare parts please specify the serial number of the fan. You can fi nd it on the name plate.
50
Maintenance/troubleshooting
Roof fans - V 1.0
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