Fan Housing; Rigging, Lifting And Installation - Greenheck Vektor-MH Installation, Operation And Maintenance Manual

Securing the Bypass Air Plenum
After bypass air plenum (BAP) has been lifted into
position, plenum should be secured to roof curb,
structural steel or concrete pad. Bottom of the BAP
has a removable skirt section with pre-punched holes.
These holes will align with holes and nutserts in the roof
curb if the roof curb was provided by Greenheck. If the
roof curb is from another supplier use the holes in the
skirt as a template.
Allow gasketing to compress before securing. When
securing BAP to curb install using moly-coated 316
stainless steel screws (provided) in all holes.
If BAP is not being mounted on a roof curb, it can
be secured to either structural steel or concrete pad.
Full perimeter and cross support under the BAP is
required. Method used to secure the BAP to either
structural support(s) or concrete pad is determined by
site or structural engineer. If BAP is welded to support
structure repair the area where coating was burnt off.
See coatings repair section of this manual for details
involving touch-up of damaged surfaces.
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Fans – Rigging, Lifting and
Installation
CAUTION
Fans should never be lifted by the shaft, motor, motor
cover or accessories.
Prior to setting fan(s) on plenum, place 1/4-inch thick
x 3/4-inch wide EPDM gasket around the perimeter of
top edge of BAP where fans mount, adhesive side down
(gasket provided).
Fans - Rigging and Lifting
Fans are to be rigged and moved by the lifting brackets
provided or by the skid when a forklift is used. Location
of brackets varies by model and size. Handle in such
a manner as to keep from scratching or chipping the
coating. Damaged finish may reduce ability of fan to
resist corrosion. See coating repair section of this
manual for details involving touch-up of damaged
surfaces.
Vektor-MD fans size 40 and larger and all MH and MS
fans are shipped with the nozzle separate from the main
housing. For these sizes the nozzle should be lifted
separate from the fan. For MD models with the nozzle
attached the main fan housing can be lifted using the
brackets on the nozzle.
• Use standard lifting and rigging practices.
• ALL lifting lugs (brackets) on each component must
be utilized at the same time.
• Fan to be kept level during lifting and installation.
Vektor MD - sizes 36 and smaller
Vektor MD - sizes 40 and greater
Vektor MH and MS - all sizes
Fan Housing Installation
Lower Vektor fan housing into place. Allow gasket to
become compressed before securing to plenum.
Install moly-coated 316 stainless steel screws (provided)
in all holes in plenum cap.
Lifting Brackets
Lifting Lugs
Motor Cover
Lifting Lug
Laboratory Exhaust Systems
7