13
www.ventilation-system.com
VUT 300/550/900 PBE EC
STORAGE AND TRANSPORTATION REGULATIONS
• Store the unit in the manufacturer’s original packaging box in a dry closed ventilated premise with temperature range
+5 ˚С...+40 ˚С 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.
TROUBLESHOOTING
IF UNIDENTIFIED NOISES OR ODOURS SHOULD ARISE AND IN CASE OF DEFORMATION
OF ELEMENTS, VIBRATION, TERMINATION OF AIR SUPPLY/EXTRACTION OR REDUCED
SYSTEM PERFORMANCE, IMMEDIATELY DISCONNECT THE UNIT FROM POWER SUPPLY
AND CONTACT THE SELLER FOR THE VENTILATION SYSTEM DIAGNOSTICS
DIAGNOSTICS MUST BE CARRIED OUT BY QUALIFIED SPECIALISTS
POSSIBLE FAULTS AND TROUBLESHOOTING
Problem
Possible reasons
Troubleshooting
The fan (-s) does (do) not
start up during the unit
start-up.
No power supply.
Make sure the unit is properly connected to power mains,
otherwise troubleshoot a connection error.
The mode is set in which the fans are off.
Change the operating mode using the control panel.
Low air flow.
Low set fan speed.
Set higher speed.
The filters, the fans or the heat exchanger are
contaminated.
Clean or replace the filters, clean the fans and the heat
exchanger.
The elements of the ventilation system (air ducts,
diffusers, louver shutters, grilles) are soiled, damaged or
closed.
Clean or replace the ventilation system elements (air ducts,
diffusers, louver shutters, grilles).
Low supply air
temperature.
The extract filter is soiled.
Clean or replace the extract filter.
High noise, vibration.
The fan or casing screw connection is loose.
Tighten the screw connection of the fans or the casing
against stop.
No anti-vibration dampers on the spigots.
Install anti-vibration rubber mounts.
Condensate leakage.
The drain line is clogged, damaged or mounted wrong.
Clean the drain line, if necessary. Check the drain line slant,
inspect the U-trap and make sure the drain line is equipped
with frost protection.
If the troubleshooting steps are unsuccessful,
contact the service department or the seller of the product.
In the event of malfunctions not described in the table,
contact the service department or the seller of the product.
