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Clean the product surfaces and the impeller of the fans inside the casing regularly (once in 6 months) from dust and dirt.
Disconnect the fan unit from power mains prior to any maintenance operations.
Open the service panel of the fan unit and remove dust from the surfaces of the fans and impeller blades.
Use a soft brush, cloth, vacuum cleaner or compressed air for cleaning. Do not use water, aggressive solvents, or sharp objects as they
may damage the impeller. It is forbidden to remove or change the location of the balancers on the impeller, as this can lead to increased
level of vibration, noise and reduce the service life of the unit.
During technical maintenance, make sure that there are no visible defects on the unit, the mounting brackets are securely fastened to the
fan casing and the unit is securely mounted.
DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE ANY MAINTENANCE
OPERATIONS!
MAKE SURE THE UNIT IS DISCONNECTED FROM POWER MAINS BEFORE REMOVING
THE PROTECTION
AVOID LIQUID SPILLS ON THE MOTOR! DO NOT USE AGGRESSIVE SOLVENTS AND
SHARP OBJECTS FOR CLEANING!
PRIOR TO COMMENCING ANY TECHNICAL MAINTENANCE PUT UP A PROHIBITORY
SIGN ON THE FAN STARTING PANEL:
“DO NOT SWITCH ON! MEN AT WORK!”
TECHNICAL MAINTENANCE
TROUBLESHOOTING
Problem
Possible reasons
Troubleshooting
The fan (-s) doesn’t
(don’t) start.
No power supply.
Make sure the power supply line is connected
correctly, otherwise troubleshoot a connection error.
Jammed motor.
Disconnect the fan from power supply.
Troubleshoot the motor jamming.
Restart the fan.
The fan has overheated.
Disconnect the fan from power supply.
Eliminate the cause of overheating.
Restart the fan.
Automatic circuit
breaker tripping
following the fan
turning on.
Excessive electric current consumption caused by a
short circuit.
Turn the fan off.
Contact the Seller.
Noise, vibration.
The fan impeller is soiled.
Clean the impellers.
The fan or casing screw connection is loose.
Tighten the screw connection of the fan or the casing
against stop.
The ventilation system components (air ducts,
diffusers, louvre shutters, grilles) are clogged or
damaged.
Clean or replace the ventilation system components
(air ducts, diffusers, louvre shutters, grilles).
