Please read and save these instructions for future reference. 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 these instructions will result in voiding of the product warranty and may result in personal injury
and/or property damage.
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.
1. Follow all local electrical and safety codes, as well as
the National Electrical Code (NEC) and the National
Fire Protection Agency (NFPA), where applicable.
Follow the Canadian Electrical 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.
DANGER
Always disconnect, lock and tag power source before
installing or servicing. Failure to disconnect power
source can result in fire, shock or serious injury.
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.
DANGER
Pour écarter les risques d’incendie, de choc électrique
ou de blessure grave, veiller à toujours débrancher,
verrouiller et étiqueter la source de courant avant
l’installation ou l’entretien.
ATTENTION
Lors de toute intervention sur la soufflante, le moteur
peut être suffisamment chaud pour provoquer une
douleur voire une blessure. Laisser le moteur refroidir
avant toute maintenance.
ATTENTION
Faire preuve de précaution dans les atmosphères
explosives.
Mixed Flow1
Receiving
Upon receiving the product check to make sure all
items are accounted for by referencing the delivery
receipt or packing list. Inspect each crate or carton
for shipping damage before accepting delivery. Alert
the carrier of any damage detected. The customer will
make a notation of damage (or shortage of items) on the
delivery receipt and all copies of the bill of lading which
is countersigned by the delivering carrier. If damaged,
immediately contact your Accurex Representatives. Any
physical damage to the unit after acceptance is not the
responsibility of Accurex, LLC.
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 inches (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.
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
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. The following suggestions are provided solely
as a convenience to the user.
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.
OUTDOOR
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.
The use of a tarp to cover the unit will aid in keeping it
clean and dry. Avoid using a black plastic tarp as it will
promote condensation.
Fan wheels should be blocked to prevent spinning
caused by strong winds.
- Roads or aisles for portable cranes and
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
hard to reach internal surfaces or for occasional use,
consider using Tectyl® 511M Rust Preventive or WD-40®
or the equivalent.
®
506 (Ashland Inc.) or the equivalent. For
Mixed Flow2
Removing From Storage
As fans are removed from storage to be installed in their
final location, they should be protected and maintained
in a similar fashion, until the fan equipment goes into
operation.
Prior to fully assembling and installing the fan and
system components, inspect the fan assembly to make
sure it is in working order.
1. Check all fasteners, set screws, wheel, bearings,
drive, motor base and accessories for tightness.
2. Rotate the fan wheel by hand and assure no parts
are rubbing. Access to the wheel is obtained through
an access panel located on the side of the fan
housing.
3. Ensure proper wheel settings for radial gap and
alignment. See Unit Start-Up section.
Table of Contents
General Safety Information . . . . . . . . . . . . . . 1
Installations with poor inlet or discharge configurations
may result in reduced fan performance.
Ducted Installations
Inlet Duct Turns – Installation of a duct turn or elbow
too close to the fan inlet reduces 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. To achieve full fan performance, there
should be at least one fan wheel diameter between the
turn or elbow and the fan inlet.
PoorGood
1 Fan
Wheel
Dia.
Turning
Vanes
Discharge Duct Turns – 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.
Poor
Duct Connections
It is highly recommended to use a flexible sleeve
connection instead of a rigid duct connection. This will
reduce vibration transmission through the ductwork.
Slip-Fit End Connection
Directly attach the flexible sleeve to the duct and fan.
No additional parts are required.
Flexible Sleeve
FanDuct
Flanged End Connection
Optional companion flanges are bolted to the fan to
provide a slip-fit connection for a flexible sleeve.
Flexible Sleeve
FanDuct
Companion Flange
Note: Flexible sleeve & attachment hardware not provided.
Length of
Straight Duct
Good
Non-Ducted Installation
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 a
minimum of one fan wheel
diameter between the fan
inlet and the wall.
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, and performance is
reduced.
Mixed Flow4
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