Vents HBF 250, User Manual, Page: 12 / 16

12
HBF
www.ventilation-system.com
TROUBLES AND TROUBLESHOOTING
TROUBLE POSSIBLE REASONS TROUBLESHOOTING
The fan does not get started.
No power supply.
Check the electric connections and the operation status of the
circuit breaker.
Motor jam.
Turn the fan off. Troubleshoot clogging of the impeller. Restart
the fan.
Automatic circuit breaker tripping
during the unit turning on.
Overcurrent as a result of short circuit in
the electric circuit leads to tripping of
the circuit breaker.
Disconnect the fan from power supply and contact the product
Seller. Do not turn the fan on again!
Low air flow.
Air ducts or other components of the
ventilation system are clogged. The
impeller is clogged. The air ducts are
damaged. The air dampers are closed. Clean the air ducts, the impeller and other components of
the ventilation system. Make sure that the air ducts are not
damaged. Make sure that the air dampers and louvre shutters
are open.
STORAGE AND TRANSPORTATION REGULATIONS
• Store the unit in the manufacturer’s original packaging box in a dry closed ventilated premise with temperature range
from +5 ˚C to +40 ˚C and relative humidity up to 70 %.
• Storage environment must not contain aggressive vapors and chemical mixtures provoking corrosion, insulation, and sealing
deformation.
• Use suitable hoist machinery for handling and storage operations to prevent possible damage to the unit.
• Follow the handling requirements applicable for the particular type of cargo.
• The unit can be carried in the original packaging by any mode of transport provided proper protection against precipitation and
mechanical damage. The unit must be transported only in the working position.
• Avoid sharp blows, scratches, or rough handling during loading and unloading.
• Prior to the initial power-up after transportation at low temperatures, allow the unit to warm up at operating temperature for at least
3-4 hours.
The technical maintenance includes periodic cleaning of the surfaces from accumulated dust and dirt when the fan is disconnected from
power supply. The impeller cleaning procedure is shown below. The impeller blades require thorough cleaning from dust and dirt once
in 6 months.
TECHNICAL MAINTENANCE
DISCONNECT THE UNIT FROM POWER SUPPLY BEFORE ANY MAINTENANCE
OPERATIONS!
MAKE SURE THE UNIT IS DISCONNECTED FROM POWER MAINS BEFORE REMOVING
THE PROTECTION