modify the plug provided with the appliance; if it will not fit the outlet, have a proper outlet installed by a qualified
technician.
Introduction
OmniAire 18000 consists of a blower unit and three HEPA cabinets. The HEPA cabinets must be connected to the
blower unit with three flexible hoses at all time for the system to operate properly.
The Blower unit contains two 22” vaneaxial blowers with direct drive motors. Two motor starter enclosures are
mounted on the front of the blower cabinet. One power cord connects the unit to 240 VAC/3 phase/50-amp power
supply. The intake side of the Blower unit has (3) 18” rings for flex hoses from HEPA cabinets. The exhaust side of the
machine has (2) – 24” rings which could be left open or ducted.
Each HEPA cabinet holds three HEPA filters and pre-filters. The HEPA filters are secured with 4 tabs to maintain a tight
seal to prevent any air bypass around HEPA filters. Each HEPA cabinet has a vacuum gage, 0’-5” WC, to measure
pressure drop across the filters, representing loading of filters with dust. All three HEPA filters must be installed and
function properly for the system to operate. The function of the prefilter is to capture larger dust particles and to
extend the operation of the HEPA. The dense, orange side of pre-filter must face the HEPA.
All three HEPA cabinets must be connected to blower cabinet to assure proper operation of the whole system. The
hoses have to be rated to operate at minimum of 10” WC of vacuum.
Unpacking and Preparation
• Check the HEPA cabinets for any distortion or damage.
• The motor blower unit has reinforced frame mounted inside the cabinet and the entire unit can be safely lifted off the
pallet with a fork lift. The weight is over 900 lbs.
• Each filter cabinet contains three HEPA filters and weighs approximately 200 lbs. The construction of the filter cabinet
is designed to be moved around with a fork lift as well.
• Remove the primary/secondary filters and check the HEPA filters for any visible damage and see that it is seated
properly.
The HEPA must be seated well against the internal housing flange and the bottom supports. The tabs must be tight to
compress the HEPA gasket to the HEPA filter.
NOTE: If any one of the HEPA filters is leaking or has a bypass, the whole system will fail the required DOP efficiency
test.
The blower cabinet with motor controls should be inspected for visible damages. The intake plenum which operates
under vacuum must be well sealed.
Inspect flex hoses for cuts, tears and breaks. The hoses must be secured to the rings on the HEPA cabinets and the
blower cabinet with clamps to prevent any air leaks. The ducting operates under negative pressure of 2“-4” WC and
any small openings or cuts will allow contaminants to enter the purified air. Periodically check the silicone seal around
all the rings.
Operation
The OmniAire 18000 offers many variations for the set-up of the blower and filter cabinets. To protect the blower
cabinet from contamination of asbestos or other hazardous materials, the unit could be operating in a clean
environment while the filter cabinets could be inside the containment area connected by flex ducting. For Asbestos
and mold abatement, the machine must be operated with all HEPA filters in place. Also, it is recommended to use
the primary/secondary filter and replace it frequently to extend the life of the HEPA. Check that the blower cabinet is
connected to three HEPA filter cabinets and the filters are properly installed.
