KOJA 0603, Instruction For Operation And Maintenance

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AIR HANDLING UNIT FUTURE
INSTRUCTIONS FOR OPERATION AND MAINTENANCE
Heat recovery section, rotor FRTR
20 V. 2.0 2017-02-13
6. HEAT RECOVERY SECTION, ROTOR FRTR
6.1. Operating conditions
• The maximum permissible operating temperature is +70 °C.
6.2. Commissioning
• The units should not be started during the construction phase. If this cannot be avoided, the fan must
not be used without the heat exchanger in operation. Make sure that the filters are in place.
• Make sure that the inlet or outlet ducts are free from foreign objects that could damage the faces of
the heat exchanger.
• Use a spirit level on the face of the heat exchanger to ensure that the rotor is upright, and adjust it, if
necessary.
• Make sure that the rotor rotates freely.
• Make sure that the rotor belt is tight and running freely in its proper place. Check the tightness of the
belt after two weeks of use, and shorten the belt according to the tightening instructions so that the
belt will have allowance for stretch with respect to the limit switch, if necessary.
• If necessary, adjust the brush seals on the circumference of the rotor, so that they touch the surface
of the heat exchanger. Also check the brush seals on the lower surface of the rotor mid-beams and, if
necessary, adjust them so that they touch the surface of the exchanger.
• Check that the rotation guard magnet and sensor are installed correctly.
• Make sure that the seals of the access door are in place and intact. Close the access door and make
sure that each latch tightens properly.
• Go through the section-specific instructions, check that the access doors are shut, and then start the unit.
• Looking from the exhaust air side, check that the heat exchanger rotates from the exhaust air side to
the supply air side through the purging sector.
• After two weeks of use, check the bolts and belt of the sectorised rotor periphery plates for tightness.
Tighten, if necessary.
CAUTION
If the unit is installed in a place where it is accessible to persons other than service
personnel, the handles of the access doors must be removed and locked in a safe place.