Carrier AiroVision 39 HQ, Сборка/монтаж, пусконаладка, руководство по обслуживанию

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sition.
Mechanical Cleaning
AHU shall be cleaned using source removal me-
chanical cleaning methods designed to extract con-
taminants from within the HVAC system and safely
remove contaminants from the facility. No cleaning
method, or combination of methods, shall be used
which could potentially damage components of the
AHU or negatively alter the integrity of the system.
Mechanical cleaning may employ;
• vacuum units
• mechanical and hand brushes
• pressurized air sources
• pressurized water sources
• steam
• other tools
to dislodge attached particulate and debris and con-
vey it to a collection device in a controlled manner.
Cleaning the heating and cooling functions first, is
adviced since you can use pressurised air or water
for cleaning the coils. Do not use pressurized air for
cleaning of foreign objects from other functions (other
then heating and cooling coils) since the air may take
the foreign objects to other parts of the air handling
unit. Instead, use a vacuum cleaner to clean the unit
of foreign objects.
All methods used shall incorporate the use of vac-
uum collection devices that are operated continu-
ously during cleaning. The vacuum collection device
must be of sufficient power to render all areas being
cleaned under negative pressure, such that contain-
ment of debris and the protection of the indoor envi-
ronmentis assured.
All vacuum devices exhausting air inside the build-
ing shall be equipped with HEPA filters (minimum
efficiency), including hand-held vacuums and wet-
vacuums.
All vacuum devices exhausting air outside the facil-
ity shall be equipped with Particulate Collection in-
cluding adequate filtration to contain Debris removed
from the HVAC system. Such devices shall exhaust
in a manner that will not allow contaminants to re-
enter the facility. Release of debris outdoors must not
violate any outdoor environmental standards, codes
or regulations.
Clean all internal surfaces and components. Remove
visible surface contaminants and deposits from with-
in the AHU.
You can also wash the internal parts of the air han-
dling unit (excluding filters, electrical components).
Washing operation clean condensate collectors and
drains. Assure that a suitable operative drainage sys-
tem is in place prior to beginning wash down opera-
tions. A direct connection of the hygienic ahu water
drains to the sewage system is not permitted. The
water in the syphon should not freeze at any condi-
tion. A non-return mechanism should be installed to
ensure that during all operating cycles as well as
during stoppage no contaminants of any kind can be
transferred from the condensate drain to the inlet air
flow.
Do not use any flammable liquid to clean any part
of the unit. If chlorinated hydrocarbon non-flammable
fluids are used for cleaning, safety precautions must
be taken against any toxic vapours that may be re-
leased.
External panels and grilles where fitted, should be
cleaned with hot soapy water and a soft cloth from
both inner and outer sides. As the paint finish is to
be maintained, avoid the use of abrasives or strong
detergents.
You can do a preliminary wipe down using a 10:1 so-
lution of deionized water and isopropyl alcohol. Do
not use this solution on plastic.
Door seals should be inspected and replaced if nec-
essary.
If, because of any reason, the sealing materials used
in AHU have to be changed, they shall be closed-
pored; they shall not absorb any humidity or release
any odours and, in particular, must not provide a nu-
trient substrate for microorganisms.
Plastic materials used in air-handling areas where
high values of relative humidity, or large quantities of
water, are inherent in the intended use, must not pro-
vide a nutrient substrate for microorganisms (proof to
be established in accordance with EN 846).
Wiring:
Check the unit for loose connections or frayed wiring.
Clean and tighten all connections and repair or renew
all frayed or damaged wires and cables. Take care
not to damage the wiring when working on the unit.
When refitting wires and cables make sure they will
not be damaged in service by chafing or by contact
with a hot surface. Always refer to the appropriate
wiring diagram when refitting any components previ-
ously removed or renewed.