AcuAir
®
units utilize a food grade caulk for air and water sealing
on the interior and exterior. The sealing on the units should
be inspected and repaired as necessary.
The AcuAir hygienic unit has the potential to operate with
internal air humidity and external ambient temperatures
conducive to forming condensation. These factors make it
important that measures be taken to eliminate risk of water
and ice collecting where it has the potential to cause damage
or faulty operation. Before initial start-up of the AcuAir
hygienic unit a thorough inspection of all conduit openings
should be made and any compromised openings resealed.
Follow up inspections should be performed as indicated on
the recommended maintenance schedule.
Water may enter the inside of the electrical conduit and
door switches by either of two methods: through unsealed
conduit ends and exible conduit pigtails prior to the AcuAir
unit factory wiring being reconnected on site or by humidity
migrating into unsealed conduits that are open to the inside
the AcuAir enclosure. Humidity that migrates into an electrical
conduit that is then exposed to outdoor temperatures below
the dew point of the air will condense into water and drain to
the lowest location possible. If those outdoor temperatures
are cold enough this water may then turn into ice.
In order to eliminate the collection of condensed water
inside electrical conduit, panels and instrumentation it is very
important that electrical conduit openings are adequately
sealed. Each sealed opening restricts the further migration of
humidity and the potential for water collection and damage.
The example in Figure 50 highlights the important locations
for sealing electrical conduit. This representation is not to
be considered all inclusive but rather a representation of the
typical locations requiring sealing putty.
The unit should be thoroughly cleaned at regular intervals.
Your chemical supplier should be consulted when picking the
proper cleaning chemicals.
Before cleaning, any capped drain pipes should be uncapped,
and motors should be draped with plastic. During cleaning,
the following components should be directly sprayed
with water: Motors, Damper Motors, Bearings, Pitot Tubes,
Filters, and Electronic Sensors.
Plug Vertically Down
Conduit Openings At
All Door Switches
Plug All Junction Box
Conduit Openings
Typical (2) Boxes
Plug All Conduit
Wall Penetrations
(Many)
Plug All Smoke Detector
Enclosure Electrical
Conduit Openings
Plug All Gas Wrapper Panel
Conduit Openings
Plug All Control Panel
Conduit Openings
Plug All Starter / VFD Panel
Conduit Openings
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