Komfovent DOMEKT REGO 600HE-EC Manuel D'installation Et De Maintenance page 18

EN
Before performing any inspection work, check whether the unit is switched
off from the electric power supply.
Fans should be carefully cleaned with textile or soft brush. Do not use water. Do not break balance. Check if
direction of fan turns is right, because wrong direction of turns gives only 30% rating. Check if fan freely rotates
and is not mechanically damaged, if impeller does not touch suction nozzles, fan does not spread noise, the
pressure tubes are connected to the nozzle (if it is required), mounting bolts are screwed.
The rubber couplings connecting the motor base and the unit should be visually inspected for signs of wear
and replaced as necessary.
Any unusual noise or vibration when the fan is running should be immediately investigated, as this usually an
indication of wear or imbalance in the fan system.
3. Air heater check. Recommended to perform periodical inspection and cleaning of heater. Check the plates
of water air heater. The air heater is cleaned with hoover from supply air side or with air blast from exhaust air
side. If it is very dirty, wash with tepid water, which will not make corrosion of aluminium. Check if position of
return water temperature sensor is right. Check if electric air heater is properly fixed, wires connections are
not damaged and heating elements are not bent. They can be damaged or bent due to uneven heat or uneven
and turbulent air direction. Check if electric air heater is clear of unnecessary things and heating elements are
not clogged, because this can cause unpleasant smell or in the worst case – dust can start burning. Air flow
through the air heater should be greater than 1,5 m/s. Heating elements can be cleaned with hoover or wet
textile.
4. Air damper check (if it is required). Not fully opened outside air damper rises up the pressure in the
system. Water air heater can freeze if outside air damper does not fully close in not working air handling unit.
Mounting and running of air damper should be checked and regulated.
5. Air filter clogging check. Change air filters when air filter clogging is indicated. We recommend to change
filters at least twice per year: before and after heating season, or more
If air handling unit is working in small speed, the filters must be checked on unit maximum speed. Filters are
one time used. We do not recommend cleaning them. Stop the air handling unit before changing filters.
6. Pressure sensor setting, which indicates impurity of filters. Pressure sensor is set according to
EN 13779:2007 standard: 100 Pa for small systems, 150 Pa for big systems. Remove cover from the pres-
sure sensor and turn the cursor due to proper position. The indicator will turn on when filters will be clogged.
• One of pressure sensors shown in 7 Picture can be mounted in the air handling unit.
• Close the door after pressure sensor regulating process. Be sure that sensor does not indicate impurity
of clear filters.
• Pressure sensors in the air handling units up to size 900 are regulated and set in factory.
Clogged filters unbalance ventilation system, air handling unit uses more power.
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Pressure sensor
UAB AMALVA we reserve the right to make changes without prior notice
.
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7 Picture