Read and Save These Instructions
FORM 613098
INSTALLATION & MAINTENANCE INSTRUCTIONS
Models PRN and USR
RECEIVING AND INSPECTION
Immediately upon receipt of a shipment, carefully
inspect for damage and shortage. Turn the impeller by
hand to see that it turns freely and does not bind. If any
damage and/or shortage is detected or suspected, the
carrier must be asked to conduct an inspection. The
consignee’s representative should not accept a
shipment without a notation on the delivery receipt
indicating items not delivered or the apparent extent of
damage.
When a shipment is opened and damage is found
which was not evident externally (concealed damage),
it is mandatory that the consignee request an
immediate inspection by the carrier. Report any
damage to the carrier within 15 days. Failure to report
damage within the above time limit will result in
rejection of a claim.
HANDLING
When handling fans and their accessories, always use
equipment and methods that will not cause damage.
Fans should be lifted using slings and padding or
spreaders to avoid damage.
CAUTION! Always make sure that all lifting and
handling equipment and techniques conform to current
safety standards.
Avoid lifting fans in a way that will bend or distort fan
parts. Never pass slings or timbers through the orifices
of fan.
CAUTION! Do not lift by the fan hood. Fans with
special coatings or paints must be protected in handling
to prevent damage.
STORAGE
Fans are protected against damage during shipment. If
they cannot be installed and put into operation
immediately upon receipt certain precautions are
necessary to prevent deterioration during storage.
Responsibility for integrity of fans and accessories
during storage must be assumed by the user. The
manufacturer will not be responsible for damage during
storage. These suggestions are provided solely as a
convenience to the user, who shall make his own
decision as to whether to use any or all of them.
INDOOR: The ideal storage environment for 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 at between 70°F and 105°F (wide
temperature swings may cause condensation and
"sweating" of metal parts). Windows should be covered
to prevent temperature variations caused by sunlight.
Provide thermometers and humidity indicators at
several points and maintain the atmosphere at 40%
relative humidity, or lower.
It may be necessary to use trays of renewable
desiccant or portable dehumidifier to remove moisture
from the air in the storage enclosure.
Thermostatically controlled portable heaters (vented to
outdoors) may be required to maintain even
temperatures inside the enclosure.
CAUTION! Provide fire extinguishers, or fire alarms, or
emergency response communication to protect building
and equipment against fire damage. Be sure that
building and storage practices meet all local, state and
federal fire and safety codes.
The following fans or accessories must be stored
indoors, in a clean dry atmosphere:
a. Propeller wall fans not in wall housings.
b. Any fan is protected by a cardboard carton.
c. Motors dismounted from fans.
d. Spare wheels or propellers.
e. Belts, sheaves, bushings and other parts when
not mounted on fan.
f. Boxes, bags or cartons of hardware.
g. Curbs
h. Dampers
Remove any accumulations of dirt, water, ice or snow
and wipe dry before moving indoor storage. Allow cold
parts to reach room temperature to avoid “sweating” of
metal parts. Open boxes or cartons. Remove any
accumulated moisture; if necessary use portable
electric heaters to dry parts and packages. Leave
coverings loose to permit air circulation and to permit
periodic inspection.
Rotate wheels or propellers by hand to distribute
bearing grease over the entire bearing surfaces.
Store at least 3 ½” off the floor on wooden blocks
covered with moisture proof paper or polyethylene
sheathing. Provide aisles between parts and along all
walls, to permit air circulation and space for inspection.
OUTDOOR: Fans designed for outdoor use may be
stored outdoors, if absolutely necessary. The storage
area should be reasonably level and drained or ditched
to prevent accumulation of water. Fencing and lighting
for security are desirable. Roads or aisles for portable
cranes and hauling equipment are needed. Consider
the use of drift fencing to minimize accumulation of
blowing snow or dirt.
The following fans may be stored outdoors, if dry indoor
storage space is not available:
a. Fans intended for outdoor use that are crated in
wood.
b. Wall fans installed in wall housings.
All fans must be supported on wooden blocks or
timbers above water or normal snow levels. Provide
enough blocking to prevent settling into soft ground.
Fans should be set in place using the directional arrow
markings on the crate as a guide.
Locate pieces far enough apart to permit air circulation,
sunlight, and space for periodic inspection. Place all
parts on their supports so that rain water will run off, or
to minimize water accumulation. Do not cover parts
with plastic film or tarps-these cause condensation of
moisture from the air passing through heating and
cooling cycles.
Fan wheels and propellers should be blocked to
prevent spinning caused by strong winds.
INSPECTION AND MAINTENANCE DURING
STORAGE
Inspect fans and accessories at least once per month,
while in storage. Log results of inspection and
maintenance performed. A typical log entry should
include the following:
a. Date
b. Inspector’s Name
c. Name of Fan
d. Location
e. Condition of Paint or Coating
f. Is moisture present?
g. Is dirt accumulated?
h. Corrective steps taken?
If moisture or dirt accumulations are found on parts, the
source should be located and eliminated. Fans should
be rotated at each inspection by hand ten to fifteen
revolutions to redistribute the motor and bearing
lubricant.
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. The most critical items are pulleys, shafts and
bearing locking collars. At the first sign of rusting on
any of the above parts, remove the original rust
preventive coating with petroleum solvent and clean
lint-free cloths. Polish any remaining rust from surfaces
with crocus cloth or fine emery paper and oil. Do not
destroy the continuity of the surfaces. Wipe clean with
lint-free cloths and recoat surfaces evenly and
thoroughly with Tectly 506 (Ashland Oil Company) or
equal. For hard to reach internal surfaces or for
occasional use, consider using Tectly 511M Rust
Preventive or WD40 or equal.
REMOVING FROM STORAGE
As fans are removed from storage to be installed in
their final location, they should be protected and
maintained in similar fashion, until the fan equipment
goes into operation.
INSTALLATION
1. CAUTION! This unit has rotating parts and safety
precautions should be exercised during installation,
operation and maintenance.
2. WARNING! Do not use in hazardous
environments where the fan’s electrical system
could provide ignition to combustible or flammable
materials, unless the unit is specifically built for
hazardous environments.
3. If the fan manufacturers prefab curb is used, a
flange is provided for mounting the damper.
Damper should be installed before setting
exhauster.
4. If damper box is being used, assemble box and
mount in curb before setting exhauster. Damper
may be installed at this time if desired. Damper
should be fastened to the bottom of the damper
box, curb flanges or nailing strips in curb.
5. Impeller Adjustment: Turn centrifugal impeller by
hand to make sure it rotates freely. If impeller hits
orifice, adjust by loosening set screw in impeller
hub and move impeller back on motor shaft.
6. CAUTION! Guards must be installed when fan is
within reach of personnel or within eight (8) feet
(2.5 m) of working level or when deemed advisable
for safety.
7. Remove the motor compartment cover (small
hood). CAUTION! Before proceeding, make sure
electrical service to fan is locked in “OFF” position.
Run wires through the internal wiring post to the
motor, to disconnect switch if used. WARNING!
The wiring post is sealed to the curb cap with a
large washer and sealing gasket. If the wiring post
is loosened, the seal may be broken, thereby
creating a possible water leak.
8. All wiring should be in accordance with local
ordinances and the National Electric Code.
9. WARNING! Check voltage at the fan to see if it
corresponds with the motor nameplate. High or
low voltage can seriously damage the motor. Extra
care should be taken when wiring two speed
motors since improper connections will damage
motor and void motor warranty.
Page 2
10. Apply power momentarily and compare the rotation
of the impeller with the directional arrow on fan.
WARNING! Operation in the wrong direction will
deliver air but will overload the motor to the extent
of blowing fuses, overload protection and could
seriously damage the motor. In the case of single
phase motors, the reversing instructions will appear
on the wiring diagram, located either in the motor
wiring compartment or on the outside of the motor
housing.
11. Using a minimum of eight (8) lag bolts - two (2) on
each side near corners, securely fasten fan to curb,
replace small hood and fasten all bolts securely.
The fan should rest on the curb as level as
possible.
MAINTENANCE
1. Under normal usage, no spare parts are
recommended for one year of operation.
Recommended spare parts are shown on page 4.
2. CAUTION! Before proceeding, make sure electrical
service to fan is locked in “OFF” position.
WINDMILLING: Even when the power is locked
out, fans may cause injury or damage if the impeller
is subject to “windmilling” which is the turning of the
impeller and drive components due to a draft in the
system. To guard against this hazard, the impeller
should be secured to physically restrict rotational
movement.
3. Motor bearings are pre-lubricated. Consult
information printed on the motor for lubrication
instructions.
4. If motor requires replacement, one comparable to
the original with the same service factor and
enclosure must be used.
SET SCREW TIGHTENING SCHEDULE
1. Before initial operation of the fan, tighten set
screws according to the procedure outlined below.
2. After 500 operating hours or three months,
whichever comes first, tighten set screws to the full
recommended torque.
2. Tighten the second set screw to the full
recommended torque.
3. Tighten the first set screw to the full recommended
torque.
Table 1. Recommended Tightening Torque
for Set Screws
Set Screw Diameter Torque (in-lbs)
#10 35
1/4 80
5/16 126
3/8 240
7/16 384
1/2 744
9/16 1080
5/8 1500
3/4 2580
7/8 3600
1 5400
VARIABLE FREQUENCY
DRIVES AND MOTORS
There are occasions when a Variable Frequency Drive
(VFD) will cause poor motor performance and possible
damage. To avoid these problems, the Company
recommends the following:
1. Select compatible motor and VFD converter; if
possible, the motor and the converter should be
from the same manufacturer or at least the
converter selected should be recommended by the
motor manufacturer.
2. A motor shaft grounding system should be used to
prevent motor bearing damage from eddy currents.
NOTE: The Company will not honor motor
warranty claims if the customer fails to follow these
recommendations.
3. At least once a year, tighten set screws to the full
recommended torque.
PROCEDURE FOR TIGHTENING SET SCREWS IN
BEARINGS AND HUBS
One Set Screw Application
Using a torque wrench, tighten the set screw to the
torque recommended in Table 1.
Two Set Screw Application
1. Using a torque wrench, tighten one set screw to
half of the torque recommended in Table 1.
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PARTS LIST LEGEND
NO. DESCRIPTION QTY. NO. DESCRIPTION QTY.
1 Motor Compartment Cover 1 7 Wiring Post 1
2 Motor* 1 8 Hood Supports 4
3 Motor Mount 1 9 Birdscreen 1
4 Small Hood Brackets 4 10 Curb & Orifice Assembly 1
5 Hood 1 11 Windband 1
6 Impeller* 1
*Recommended spare parts
Page 4
TERMS AND CONDITIONS OF SALE
ACCEPTANCE All orders and sales are subject to
written approval and acceptance by an executive offi
cer of the Company at Muskogee, Oklahoma, and are
not binding on the Company until so approved.
DELIVERY All shipping and delivery dates are esti
mated only. No delays in delivery will subject the
Company to any costs, damages or fees for late deliv
ery. Delivery of the products herein specified shall be
made F.O.B. point of shipment, unless otherwise
stated. The Company shall not be liable for delay due
to causes beyond its reasonable control, such as Acts
of God, acts of the purchaser, acts of civil or military
authorities, priorities, fires, strikes, floods, epidemics,
war, riots, delays in transportation, car shortages, and
inability, due to reasons beyond its reasonable control,
to obtain necessary labor, material, or manufacturing
facilities. In the event of such a delay, the date of deliv
ery shall be extended for a period equal to the time lost
by reason of the delay.
TERMS OF PAYMENT If, in the judgment of the Com
pany, the financial condition of the purchaser at any
time does not justify continuation of manufacture or
shipment on the terms of payment specified, the Com
pany may require full or partial payment in advance.
Pro rata payments shall become due as shipments are
made. Each shipment or delivery shall constitute a
separate sale, and the default of any shipment or deliv
ery shall constitute a separate sale, and the default of
any shipment or delivery shall not vitiate the contract
as to other shipments or deliveries.
PRICE ADJUSTMENT Prices are subject to change
until the Purchaser’s order has been accepted by the
Company.
SALES AND SIMILAR TAXES The Company’s prices
do not include sales, use, excise, or similar taxes.
Consequently, in addition to the price specified herein,
the amount of any present or future sales, use, excise,
or other similar tax applicable to the sale of the product
WARNING The Company products are designed and manufactured to provide reliable performance but they are not guaranteed to be 100% free of defects. Even reliable prod
ucts will experience occasional failures and this possibility should be recognized by the Purchaser and all End Users. If these products are used in a life support ventilation sys
tem where failure could result in loss or injury, the Purchaser and all End Users should provide adequate back-up ventilation, supplementary natural ventilation or failure alarm
system, or acknowledge willingness to accept the risk of such loss or injury.
WARNING DO NOT use in HAZARDOUS ENVIRONMENTS where fan’s electrical system could provide ignition to combustible or flammable materials unless unit is specifically built for hazardous environments. Comply with all local and national safety codes including the National Electrical Code (NEC) and National Fire Protection Act (NFPA).
CAUTION Guards must be installed when fan is within reach of personnel or within eight (8) feet (2.5 m) of working level or when deemed advisable for safety.
DISCLAIMER The Company has made a diligent effort to illustrate and describe the products accurately in all Company literature; however such illustrations and descriptions
are for the sole purpose of identification and do not express or imply any warranty.
herein shall be paid by the Purchaser, or in lieu thereof
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the Purchaser shall provide the Company with a tax
exemption certificate acceptable to the taxing authori
ties.
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CANCELLATION Any contract resulting from the Pur
chaser’s order may be canceled by the Purchaser only
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by negotiations and upon payments of reasonable can
cellation charges which will take into account expenses
already incurred and commitments made by the Com
pany.
DESIGN CHANGES The Company reserves the right
to make changes in design, improvements and addi
tions in and to its products any time without imposing
any liability or obligations to itself to apply or install the
same in any product manufactured by it.
TITLE The title and right of possession of the products
sold herein shall remain with the Company and such
products shall remain personal property until all
payments herein (including deferred payments whether
evidenced by notes or otherwise) shall have been
made in full in cash and the Purchaser agrees to do all
acts necessary to perfect and maintain such right and
title in the Company.
PRICE ADJUSTMENTS AND PROTECTION Prices
on products manufactured by the Company are firm for
shipment up to four months from the date of the origi
nal order entry. Such prices are subject to adjustment
if shipment is made after four months and up to ten
months from the date of the original order entry, if
products are shipped ten months from the date of the
original order entry, prices will be adjusted to the price
in effect at the time of shipment automatically. All com
plete component accessory material manufactured by
others and furnished with the Company’s products
such as motors, drives, vibration equipment, controls
or other completely assembled component structures,
are subject to adjustment to the price at time of ship
ment regardless of the date of original order entry.
SAFETY ACCESSORIES The Company manufactures
products designed to serve multiple applications and
offers a wide range of safety equipment, including
guards and other devices, as may be required to meet
customer specifications. Without exception, the Com
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pany recommends that all orders include applicable
safety devices. Products ordered without applicable
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safety devices is clearly the responsibility of the Pur
chaser. Further, the Purchaser warrants that it has de
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termined and acquired any and all safety devices re
quired for products sold by the Company. Weather
covers and guards for motor and V-belt drives, cou
plings, shafts and bearings, along with inlet and outlet
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screens, are optional accessories noted in the price
list.
GOVERNING LAW The rights, obligations and reme
dies of Purchaser and the Company, the interpretation
of these terms and conditions and the sale of products
by the Company shall be governed by Oklahoma law,
without regard to any principles of conflict of laws.
ARBITRATION Any dispute arising under or in con
nection with these terms and conditions or the sale of
products shall be settled by binding arbitration admin
istered by the American Arbitration Association under
its Commercial Arbitration Rules, and judgment on the
award rendered by the arbitrator may be entered in
any court having jurisdiction thereof. The dispute shall
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be resolved by one neutral arbitrator who shall have no
affiliation with either Purchaser or the Company and
shall be selected by the American Arbitration Associa
tion office in Dallas, Texas. The arbitration proceed
ings shall be held in Muskogee, Oklahoma.
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APPLICABLE DOCUMENTS The agreement be
tween the Company and the Purchaser relating to the
products includes these terms and conditions of sale,
any applicable installation and maintenance instruc
tions provided by the Company and any terms appear
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ing on the Company’s quotation, sales order acknowl
edgment and invoice.
LIMITED WARRANTY
WARRANTY AND DISCLAIMER: the Company ex-
tends this limited warranty to the original purchaser
and warrants that products supplied by the Company,
shall be free from original defects in workmanship and
materials for two years from date of shipment (except
for the warranty periods noted for products listed be
low), provided same have been properly handled,
stored, installed, serviced, maintained and operated.
This warranty shall not apply to products which have
been altered or repaired without the Company’s ex
press authorization, or altered or repaired in any way
so as, in the Company’s judgment, to affect its perfor
mance or reliability, nor which have been improperly
installed or subjected to misuse, negligence, or acci
dent, or incorrectly used in combination with other sub
stances. The Purchaser assumes all risks and liability
for results of use of all products.
Evaporative cooling pads are warranted to be free of
defects in materials and workmanship for a period of
two years from date of shipment provided same have
been properly handled, stored, installed, serviced,
maintained and operated; and further, not subjected to
excessive heat, corrosive agents or chemicals, or me
chanical abuse that may cause tearing, crushing or un
due deterioration, nor used on a system or in a manner
other than that for which it was designed as explained
in the product literature.
The following products are warranted to be free of de
fects in materials and workmanship for the periods
shown from date of shipment: the Company’s exclu
sive duplex split pillow block bearings and shaft five
years, belts one year, Polyethylene tubing 90 days,
AIR40 Heater warranty one year, AIR40 Emitter war
ranty three years and DDP fan lifetime warranty on its
propeller, cone, and housing.
LIMITATION OF REMEDY AND DAMAGES: All
claims under this warranty must be made in writing and
delivered to P. O. Box 978, Muskogee, Oklahoma,
74402, within 15 days after discovery of the defect and
prior to the expiration of two years from the date of
shipment by the Company of the product claimed de
fective, and Purchaser shall be barred from any
remedy if Purchaser fails to make such claim within
such period.
Within 30 days after receipt of a timely claim, the Com
pany shall have the option either to inspect the product
while in Purchaser's possession or to request Pur
chaser to return the product to the Company at Pur
chaser's expense for inspection by the Company. The
Company shall replace, or at its option repair, free of
charge, any product it determines to be defective, and
it shall ship the repaired or replacement product to
Purchaser F.O.B. point of shipment; provided, how
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ever, if circumstances are such as in the Company’s
judgment to prohibit repair or replacement to remedy
the warranted defects, the Purchaser's sole and exclu
sive remedy shall be a refund to the Purchaser of any
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part of the invoice price, paid to the Company, for the
defective product or part.
The Company is not responsible for the cost of re
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moval of the defective product or part, damages due to
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removal, or any expenses incurred in shipping the
product or part to or from the Company’s plant, or the
installation of the repaired or replaced product or part.
The warranties set forth above do not apply to any
components, accessories, parts or attachments manu
factured by other manufacturers; such being subject to
the manufacturer’s warranty, if any. To the extent not
prohibited by the manufacturer’s warranty, the Com
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pany shall pass through to Purchaser such manufac
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turer’s warranty.
THE COMPANY’S WARRANTY IS IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED,
ARISING BY LAW OR OTHERWISE, INCLUDING
WITHOUT LIMITATION THE IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PAR
TICULAR PURPOSE, WHICH ARE HEREBY EX
PRESSLY DISCLAIMED AND WAIVED. THIS WAR
RANTY CONSTITUTES THE COMPANY’S SOLE
AND EXCLUSIVE WARRANTY FOR DEFECTIVE
GOODS AND PURCHASER’S SOLE AND EXCLU
SIVE REMEDY FOR DEFECTIVE PRODUCTS.
No employee, agent, dealer, or other person is autho
rized to give any warranties on behalf of the Company
or to assume for the Company any other liability in
connection with any of its products except in writing
and signed by an officer of the Company.
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REPLACEMENT PARTS If replacement parts are or
dered, purchaser warrants that the original compo
nents in which these replacement parts will be placed
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are in satisfactory working condition, and when said re
placement parts are installed, the resultant installation
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will operate in a safe manner, at speeds and tempera
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tures for which the original product was purchased.
TECHNICAL ADVICE AND RECOMMENDATIONS,
DISCLAIMER: Notwithstanding any past practice or
dealings or any custom of the trade, sales shall not in
clude the furnishing of technical advice or assistance
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or system design. Any such assistance shall be at the
Company’s sole option and may be subject to addi
tional charge.
The Company assumes no obligation or liability on ac
count of any recommendations, opinions or advice as
to the choice, installation or use of products. Any such
recommendations, opinions or advice are given and
shall be accepted at Purchaser's and End User's risk
and shall not constitute any warranty or guarantee of
such products or their performance.
LIMITATION OF LIABILITY The cumulative liability of
the Company to the Purchaser and any other persons
for all claims in any way relating to or arising out of the
products, including, but not limited to, any cause of ac
tion sounding in contract, tort, or strict liability, shall not
exceed the total amount of the purchase price paid for
those products which are the subject of any such
claim. This limitation of liability is intended to apply
without regard to whether other provisions of this
agreement have been breached or have proven inef
fective even if the Company has been advised of the
possibility of such claims or demands. In no event
shall the Company be liable to the Purchaser or any
other person for any loss of profits or any incidental,
special, exemplary, or consequential damages for any
claims or demands brought by the Purchaser or such
other persons.
INDEMNITY The Company’s maximum liability to Pur
chaser and to any end user is as set forth above. The
Company makes no warranty to anyone for any prod
ucts not manufactured by the Company and shall have
no liability for any use or installation of any products
(whether manufactured by the Company or other man
ufacturers) not specifically authorized by this sale.
Purchaser acknowledges various warnings by the
Company regarding the products and its installation
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and use. If the Company incurs any claims, lawsuits,
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settlements, or expenses (including attorney fees) for
any loss, injury, death or property damage including,
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but not limited to, claims arising out of the Purchaser’s
or any end user’s installation or use of the products,
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the Purchaser shall indemnify and hold the Company
harmless.
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March 2006 613098
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