Greenheck QEM Installation Manual
Part Number 463687
Centrifugal (BISW, AFSW, BIDW, AFDW)
Industrial Process (IPA, IPO, IPW)
®
Plenum (QEM, QEP)
Plug (PLG)
Filtered Supply (LSF)
Installation, Operation and Maintenance Manual
Please read and save these instructions. Read carefully before attempting to assemble, install, operate or maintain the
product described. Protect yourself and others by observing all safety information. Failure to comply with instructions
could result in personal injury and/or property damage! Retain instructions for future reference.
Centrifugal and Industrial
Plug PlenumFiltered Supply
General Safety Information
Only qualified personnel should install this fan. Personnel
should have a clear understanding of these instructions
and should be aware of general safety precautions.
Improper installation can result in electric shock, possible
injury due to coming in contact with moving parts, as well
as other potential hazards. Other considerations may
be required if high winds or seismic activity are present.
If more information is needed, contact a licensed
professional engineer before moving forward.
DANGER
Always disconnect power before working on or near
a fan. Lock and tag the disconnect switch or breaker
to prevent accidental power up.
CAUTION
When servicing the fan, motor may be hot enough
to cause pain or injury. Allow motor to cool before
servicing.
CAUTION
Precaution should be taken in explosive
atmospheres.
1. Follow all local electrical and safety codes, as well
as the National Electrical Code (NEC), the National
Fire Protection Agency (NFPA), where applicable.
Follow the Canadian Electric Code (CEC) in
Canada.
2. The rotation of the wheel is critical. It must be free
to rotate without striking or rubbing any stationary
objects.
3. Motor must be securely and adequately grounded.
4. Do not spin fan wheel faster than max cataloged
fan rpm. Adjustments to fan speed significantly
effects motor load. If the fan RPM is changed, the
motor current should be checked to make sure it is
not exceeding the motor nameplate amps.
5. Do not allow the power cable to kink or come in
contact with oil, grease, hot surfaces or chemicals.
Replace cord immediately if damaged.
6. Verify that the power source is compatible with the
equipment.
7. Never open access doors to a duct while the fan is
running.
Centrifugal, Industrial, Plug, Plenum and Filtered Supply
1
Receiving
Upon receiving the product check to make sure all
items are accounted for by referencing the bill of
lading to ensure all items were received. Inspect
each crate for shipping damage before accepting
delivery. Notify the carrier if any damage is noticed.
The carrier will make notification on the delivery
receipt acknowledging any damage to the product.
All damage should be noted on all the copies of the
bill of lading which is countersigned by the delivering
carrier. A Carrier Inspection Report should be filled out
by the carrier upon arrival and the Traffic Department.
If damaged upon arrival, file claim with carrier. Any
physical damage to the unit after acceptance is not
the responsibility of Greenheck Fan Corporation.
Unpacking
Verify that all required parts and the correct quantity
of each item have been received. If any items are
missing report shortages to your local representative
to arrange for obtaining missing parts. Sometimes it
is not possible that all items for the unit be shipped
together due to availability of transportation and truck
space. Confirmation of shipment(s) must be limited to
only items on the bill of lading.
Handling
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
the ability of the fan to resist corrosion. Fans should
never be lifted by the shaft, fan housing, motor, belt
guard, windband or accessories.
Storage
• Rotatefanwheelmonthlyandpurgebearingsonce
every three months
• Energizefanmotoronceeverythreemonths
• Storebeltsflattokeepthemfromwarping&stretching
• Storeunitinlocationwhichdoesnothavevibration
• Afterstorageperiod,purgegreasebeforeputtingfan
into service
If storage of fan is in a humid, dusty or corrosive
atmosphere, rotate the fan and purge the bearings
once a month. Improper storage which results in
damage to the fan will void the warranty.
Fans are protected against damage during shipment. If
the unit cannot be installed and operated immediately,
precautions need to be taken to prevent deterioration
of the unit during storage. The user assumes
responsibility of the fan and accessories while in
storage. The manufacturer will not be responsible
for damage during storage. These suggestions are
provided solely as a convenience to the user.
Centrifugal, Industrial, Plug, Plenum and Filtered Supply
2
INDOOR
The ideal environment for the storage of fans and
accessories is indoors, above grade, in a low humidity
atmosphere which is sealed to prevent the entry of
blowing dust, rain, or snow. Temperatures should be
evenly maintained between 30°F (-1°C) and 110°F (43°C)
(wide temperature swings may cause condensation
and “sweating” of metal parts). All accessories must be
stored indoors in a clean, dry atmosphere.
Remove any accumulations of dirt, water, ice or snow
and wipe dry before moving to indoor storage. To avoid
“sweating” of metal parts allow cold parts to reach
room temperature. To dry parts and packages use a
portable electric heater to get rid of any moisture build
up. Leave coverings loose to permit air circulation and
to allow for periodic inspection.
The unit should be stored at least 3½ in. (89 mm) off the
floor on wooden blocks covered with moisture proof
paper or polyethylene sheathing. Aisles between parts
and along all walls should be provided to permit air
circulation and space for inspection.
OUTDOOR
Roads or aisles for portable cranes and hauling
equipment are needed.
The fan should be placed on a level surface to prevent
water from leaking into the fan. The fan should be
elevated on an adequate number of wooden blocks so
that it is above water and snow levels and has enough
blocking to prevent it from settling into soft ground.
Locate parts far enough apart to permit air circulation,
sunlight, and space for periodic inspection. To minimize
water accumulation, place all fan parts on blocking
supports so that rain water will run off.
Do not cover parts with plastic film or tarps as these
cause condensation of moisture from the air passing
through heating and cooling cycles.
Fan wheels should be blocked to prevent spinning
caused by strong winds.
Inspection & Maintenance during Storage
While in storage, inspect fans once per month. Keep a
record of inspection and maintenance performed.
If moisture or dirt accumulations are found on parts,
the source should be located and eliminated. At each
inspection, rotate the wheel by hand ten to fifteen
revolutions to distribute lubricant on motor. If paint
deterioration begins, consideration should be given to
touch-up or repainting. Fans with special coatings may
require special techniques for touch-up or repair.
Machined parts coated with rust preventive should be
restored to good condition promptly if signs of rust occur.
Immediately remove the original rust preventive coating
with petroleum solvent and clean with lint-free cloths.
Polish any remaining rust from surface with crocus cloth
or fine emery paper and oil. Do not destroy the continuity
of the surfaces. Wipe clean thoroughly with Tectyl® 506
(Ashland Inc.) or the equivalent. For hard to reach internal
surfaces or for occasional use, consider using Tectyl®
511M Rust Preventive or WD-40® or the equivalent.
Table of Contents
General Information
Receiving.................................2
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation Recommendations
Centrifugal (SWSI, DWDI) .................. 4-5
Plenum / Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Belt Guards ...............................6
Bases....................................7
Rotatable Housing . . . . . . . . . . . . . . . . . . . . . . . . . 7
RadialGap,Overlap&WheelAlignment . . . . . . 8-9
Flexible Couplings ...........................9
Variable Frequency Drives (VFDs) ...............9
V-Belt Drives ................................9
Unit Start-Up...............................10
Vibration ..................................10
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . 11-12
Motors ..................................11
Shaft Bearings............................ 11
V-Belt Drive ..............................12
Unit Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Parts List .................................. 13
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Maintenance Log . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Warranty ........................... Backcover
CAUTION
When installing a fan, ensure the proper protective
devices are used to protect personnel from
moving parts and other hazards. A complete
line of protective accessories are available from
Greenheck including: inlet guards, outlet guards,
belt guards, shaft guards, protective cages and
electrical disconnects.
Electrical Disconnects
All fan motors should have disconnects located in
close visual proximity to turn off electrical service.
Service disconnects shall be locked out when
maintenance is being performed.
Moving Parts
All moving parts must have guards to protect
personnel. Refer to local codes for requirements
as to the number, type and design. Fully secure fan
wheel before performing any maintenance. The fan
wheel may start “free wheeling” even if all electrical
power has been disconnected. Before the initial
start-up or any restart, check the guards (belt,
shaft, inlet and outlet) and check the access doors
to ensure that they are installed and secure.
Centrifugal, Industrial, Plug, Plenum and Filtered Supply
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Turning
Vanes
POOR
POOR
GOOD
Length of Straight Duct
GOOD
One fan
wheel
diameter
One fan
diameter
3/4 to
one fan
wheel
diameter
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Turning
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Turning
Vanes
POOR
POOR
GOOD
Length of Straight Duct
GOOD
3/4 to
one fan
wheel
diameter
SYSTEM EFFECT FACTORS CURVES
STATIC PRESSURE LOSS
1.2
1.0
0.8
0.6
0.4
0.2
0.0
CURVE 1
CURVE 2
CURVE 3
CURVE 4
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Turning
Vanes
POOR
POOR
GOOD
POOR
Length of Straight Duct
GOOD
One fan
wheel
diameter
3/4 to
one fan
wheel
diameter
One fan
diameter
3/4 to
one fan
wheel
diameter
SYSTEM EFFECT FACTORS CURVES
STATIC PRESSURE LOSS
1.2
1.0
0.8
0.6
0.4
0.2
0.0
CURVE 1
CURVE 2
CURVE 3
CURVE 4
Installation
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Turning
Vanes
POOR
POOR
GOOD
Length of Straight Duct
GOOD
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Turning
Vanes
POOR
POOR
GOOD
One fan
diameter
3/4 to one
fan
wheel
diameter
Installations with inlet or discharge configurations
that deviate from this standard may result in reduced
fan performance. Restricted or unstable flow at the
fan inlet can cause pre-rotation of incoming air or
uneven loading of the fan wheel yielding large system
losses and increased sound levels. Free discharge
or turbulent flow in the discharge ductwork will also
result in system effect losses. Refer to the following
diagrams for the most efficient installation conditions.
Centrifugal and Industrial Process
Fans Installations
Ducted Inlet Installations
Inlet Duct Turns - Installation of a duct turn or elbow
too close to the fan inlet
reduces fan performance
because air is loaded
unevenly into the fan
wheel. To achieve full fan
performance, there should
be at least three fan wheel
diameters between the turn
POOR
or elbow and the fan inlet.
Three fan wheel diameters
Turning
Vanes
GOOD
Ducted Outlet Installations
Discharge Duct Turns - Duct turns located near the
fan discharge should always be in the direction of the
fan rotation.
Fan performance is reduced when duct
turns are made immediately off the
fan discharge. To achieve cataloged
fan performance there
should be at least
three equivalent
duct diameters of
straight ductwork
between the fan
discharge and
any duct turns.
Non-Ducted Installations
Inlet Clearance - Installation of a fan with an open
inlet too close to a wall or bulkhead will cause
reduced fan performance. It is desirable to have
one fan wheel diameter between parallel fan units
and a minimum of three-fourths of a wheel diameter
between the fan inlet and the wall.
3/4 to one
fan
wheel
diameter
3/4 to one
fan
wheel
diameter
Inlet Spin -
Inlet spin is a frequent cause of reduced
fan performance. The change in fan performance is a
function of the intensity of spin and not easily defined.
The best solution is proper duct design and airflow
patterns. Turning vanes reduce the effects of inlet spin.
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Turning
Vanes
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R
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Centrifugal, Industrial, Plug, Plenum and Filtered Supply
4
n
3/4 to
one fan
wheel
diameter
Single Fan Installation
3/4 to
one fan
wheel
diameter
One fan
diameter
Parallel Fan Installation
Free Discharge - Free or abrupt discharge into a
plenum results in a reduction in fan performance. The
effect of discharge static regain is not realized.
Outdoor Installation for UL/cUL 762 Listed Fans
for Restaurant Exhaust
The UL/cUL 762 listing for restaurant exhaust is
available on the BISW models. Fans are listed for a
maximum operating temperature of 400°F (204°C) and
include a bolted access door and 1 inch (25 mm) drain
connection. An outlet guard is strongly recommended
when the fan discharge is accessible. An upblast
discharge is recommended. The fan discharge must
be a minimum of 40 inches (1016 mm) above the
roof line and the exhaust duct must be fully welded
to a distance of 18 inches (457 mm) above the roof
surface.
The drawing below is for dimensional information
only. See the latest edition of NFPA 96 Standard for
Ventilation Control and Fire Protection of Commercial
Cooking Operations for detailed installation
instructions, materials, duct connections and
clearances.
Upblast Discharge
40 in.**
Weatherhood
1016 mm
18 in.*
457 mm
Plenum and Plug Fans - Installation
Unhoused Wheels
Adjacent Walls - The distance between the fan and
walls or ceilings will effect the performance of the fan.
The recommended distance between the fan wheel
and any wall is a minimum of one-half wheel diameter.
Multiple walls reduce the performance even more.
One-half
wheel
diameter
Side by Side - When two or more plenum fans are
in parallel, there should be at least one fan diameter
spacing between the wheels. Applications with less
spacing will experience performance losses.
One-half
wheel
diameter
One
wheel
diameter
One-half
wheel
diameter
** Per NFPA 96 the fan discharge
must be a minimum of 40 inches
(1016 mm) above the roof surface.
Duct
from
Kitchen
Hood
* Per NFPA 96 the duct must be
all welded construction to a
minimum distance of 18 in.
(457 mm) above the roof surface
Centrifugal, Industrial, Plug, Plenum and Filtered Supply
5
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