Specifications; Model Qei-L, Qei-I/Ii And Qeid; Additional Belt Drive Specification - Greenheck QEI-L Manual

Specifications

Model QEI-L, QEI-I/II and QEID

Supply, exhaust, or return air fans shall be
of the inline mixed flow type.
The housing shall be constructed of welded
heavy-gauge steel to assure no air leakage.
Housing shall have inlet and outlet collars
for slip-fit duct connections. The housing
and bearing and/or motor supports shall be
constructed of heavy-gauge steel members
to prevent vibration and rigidly support the
shaft and bearings. Welded steel vanes
shall straighten the flow of air from the fan
discharge.
All QEI-L and QEI-I/II units up through size
27 shall incorporate a universal mounting
system that allows the fan to be mounted in
either vertical or horizontal configurations
and field rotation of the motor position in
90 degree increments. Bearing life shall not
be reduced below specified level in different
configurations. QEI-I/II units size 30 and
larger shall allow for field rotation of motor
positions. Units shall accommodate base
mount or ceiling hung mounting without
structural modifications to the fan.
The wheel shall be of the mixed flow type.
Wheels shall have a wheel cone, spherical
back plate and single thickness cambered
blades. Wheels shall be statically and
dynamically balanced to balance grade
G6.3 per ANSI S2.19. The wheel cone and
fan inlet cone shall be carefully matched
and shall have precise running tolerances
for maximum performance and operating
efficiency.
Each assembled fan shall be test run at
the factory at the specified fan RPM. The
Our Warranty
Greenheck warrants this equipment to be free from defects in material and workmanship for a period
of one year from the shipment date. Any units or parts which prove defective during the warranty
period will be replaced at our option when returned to our factory, transportation prepaid. Motors are
warranted by the motor manufacturer for a period of one year. Should motors furnished by Greenheck
prove defective during this period, they should be returned to the nearest authorized motor service
station. Greenheck will not be responsible for any removal or installation costs.
As a result of our commitment to continuous improvement, Greenheck reserves the right to change
specifications without notice.
P.O. Box 410 • Schofield, WI 54476-0410 • Phone (715) 359-6171 • greenheck.com
maximum allowable fan vibration shall be
0.15 in/sec. peak velocity, filter-in for
QEI-I/II with signatures taken on each
bearing in three planes; horizontal, vertical,
and axial. Maximum vibration of 0.08 in/sec.
peak velocity, filter-in for QEID in a single
plane on the fan housing. This report shall
be provided at no charge to the customer
upon request.
Inlet and outlet sound power levels shall be
provided for each of the eight octave bands
at the point of operation.
Fans shall be licensed to bear the AMCA
Seal for Sound and Air Performance.
Mixed flow fans shall be Model QEI-L,
QEI-I/II or QEID as manufactured by
Greenheck Fan Corporation, Schofield,
Wisconsin, USA and shall be supplied as
shown on the plans and in the fan schedule.

Additional Belt Drive Specification

Turned, precision ground and polished steel
shafts shall be sized so the first critical
speed is at least 25% over the maximum
operating speed. Close tolerances shall be
maintained where the shaft makes contact
with the bearings.
Bearings shall be heavy-duty, grease
lubricated, self-aligning ball or roller type
with extended lubrication lines.
QEI-I/II and QEI-L (horizontal mount)
bearings shall be selected for a minimum
life L of 80,000 (L of 400,000) hours at
10 50
maximum operating speed. QEI-L (vertical
mount) bearings shall be selected for a
minimum life, L of 50,000 (L
10
hours at maximum operating speed.
of 250,000)
50
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00.CVI.1018 R7 5-2012 IP
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