11
VUT mini EC
VUT mini EC
MAINTENANCE
The unit must undergo technical maintenance 3 to 4 times a year. Maintenance includes general cleaning of the unit and the
following operations:
1. Filter maintenance (3-4 times per year).
Contaminated fi lters increase air resistance thus impairing supply air delivery into the premises. The fi lters should be cleaned as they
get dirty, but at least 3-4 times a year. Clean the fi lter with a vacuum cleaner or replace the worn fi lter with a new one. For new fi lters
contact your Seller.
2. Heat exchanger maintenance (once per year).
Even regular technical maintenance may not completely prevent dirt accumulation on the heat exchanger casing. Clean the heat
exchanger on a regular basis to ensure high heat recovery effi
ciency. To clean the heat exchanger remove it from the unit and wash with
warm neutral detergent solution. Re-install the dry heat exchanger into the unit.
Removing of the fi lters and the heat exchanger is as following:
make sure the unit is disconnected from power mains;
undo two clips that fi x the front panel to open the unit, fi g. 9.1. The hinged panel is opened, fi g. 9.2.
remove the fi lters, fi g. 9.3.
remove the heat exchanger, fi g. 9.4.
3. Fan maintenance (once a year).
Even regular technical maintenance of the fi lters may not completely prevent dirt accumulation in the fans which reduces the fan
capacity and impairs supply air delivery into the premises. Clean the fans with rugs or a soft brush. Do not use water, aggressive solvents
or sharp objects as they may damage the impeller.
4. Condensate drain check (once a year).
The condensate drain (line) may get clogged by dirt and dust particles contained in the exhaust air. Check the drain line operation by
fi lling the drain pan under the unit with water, clean the U-trap and the drain line, if necessary.
5. Fresh air supply duct check (twice a year).
The supply duct grille may get clogged with leaves and other objects reducing the unit performance and supply air delivery. Check
the supply duct grill twice a year and clean it as required.
6. Duct system check (every 5 years).
Even regular fulfi lling of all the prescribed above maintenance operations may not completely prevent dirt accumulation in the air
ducts which reduces the unit capacity. The air duct maintenance includes their periodic cleaning or replacement.
7. Maintenance of the exhaust louve shutters and supply diff users (as required).
Remove the disc valves and the louvre shutters and wash those with warm detergent solution. Do not change the positions of the
disc valves and the louvre shutters.
Fig. 9. Unit maintenance
1.
2.
3.
4.
Содержание VUT H mini EC
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