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Form 613153
Read and Save These Instructions
INSTALLATION & MAINTENANCE INSTRUCTIONS
QBMX SERIES
The Inline Mixed Flow Fan
INSTALLATION l OPERATION l MAINTENANCE
I. INTRODUCTION
Your Series QBMX Mixed Flow Fan is a carefully engineered
and constructed piece of machinery which will give long
satisfactory service provided correct installation and proper
maintenance practices are observed. These instructions, along
with others for motors, parts or accessories which may be
furnished as part of your fan, are supplied for your information
and guidance. DO NOT DESTROY AFTER INSTALLATION RETAIN WITH THE UNIT FOR MAINTENANCE. Preventative
maintenance including periodic inspection, testing, cleaning,
lubrication and replacement of worn parts will forestall
equipment breakdowns and minimize equipment shut-downs.
WARNING! The inner cylinder is not air tight and therefore,
the fan should not be used where the escape of
contaminated air would cause problems. The user must
accept ultimate responsibility for the acceptability of the
fan in his system.
II. RECEIVING AND HANDLING
Fans are prepared for shipment according to the Uniform
Freight Classification Rules of the carriers. The equipment is
carefully inspected before shipment and it is the responsibility
of the carrier that it be in perfect condition upon arrival.
When the carrier accepts a shipment and signs our Bill of
Lading, the carrier is responsible for any subsequent
shortages or damage, evident or concealed, and claim
must be against the carrier.
each end of the unit for handling purposes. In addition, rope
slings may be used around the casing, or eye bolts can be set
in the flange bolt holes. Some vertical units have mounting
brackets which can be used. Do not lift by the fan wheel, drive
shaft, motor or motor base as this could cause damage or
misalignment.
Fan wheels and casings which are furnished with special
coverings, such as rubber, phenolic enamels, or other
protective coatings, should be handled with extreme care as
many of these coatings are easily damaged and even a small
chipped spot will break the continuity of the coating and destroy
its value as a protective covering for the metal.
Fan wheels are carefully balanced to provide smooth
operation. If the fan wheel is damaged during handling, it may
result in an out-of-balance condition and require re-balancing.
If a shaft is dropped or unduly strained, it may be bent which
will also result in out-of-balance operation of the fan.
A fan wheel should never be lifted by or allowed to rest its
entire weight on the side plates or blades. The fan wheel and
shaft assembly can be lifted by slings around the shaft on each
side of the wheel so the wheel is supported by its hub. If a
chain is used there must be sufficient padding on the shaft and
wheel to prevent the scoring of the shaft or injury to the wheel.
The chain or cable should be spread with timbers, or braced by
some other method to prevent damage to the wheel side
plates. If the fan wheel is received separate from the shaft, a
support should be placed through the hub for lifting, making
sure not to injure the finished bore of the wheel.
Immediately upon receipt of a shipment, carefully inspect for
damage and shortage. 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
shipment without a notation on the delivery receipt indicating
items not delivered or 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 damage to the carrier within 15 days. Failure to report
damage within the above time limit will cause rejection of a
claim.
Promptly file a claim against the final carrier. A claim will not be
considered by a transportation company unless presented
within nine (9) months from date of receipt of equipment.
WARNING! Fans should never be lifted by the shaft, motor or
accessories. These are not designed to support total fan weight
and may break causing personal injury or unit damage.
Even though Mixed Flow Fans are rugged in construction,
some care must be taken in handling. Lifting lugs are built on to
III. STORING OR LONG TERM SHUTDOWN
Depending upon size, fan equipment may be shipped from the
factory either assembled as a unit or as sub-assemblies. The
fan manufacturer provides sufficient protection for shipping the
equipment to the jobsite. However, if the equipment is not
installed and operated within several days, additional
precautions are necessary.
Specifications should identify any conditions associated with
non-use or storage of the equipment. Precautions may include
specifying added protection by the fan manufacturer such as
special crating, rust preventative on bare metal parts, special
wrapping using tarps, silica gel bags to limit moisture and
special covers over the inlets/outlets.
Once the equipment has arrived at the jobsite, but is not
installed and placed in operation, the rotor (impeller and shaft)
should be rotated by hand periodically to re-coat all lubricated
parts with grease and to minimize brinnelling in anti-friction
bearings. For assembled fans located in a dirty/moist/cold
location, the equipment should be covered and bearings filled
with grease to minimize contamination from outside elements.
Before start-up, make sure all excess grease is purged out.
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Stored motors should follow the specific instructions of the
motor manufacturer.
The factory does not recommend use of any plastic to
cover equipment. This type covering can cause excessive
moisture, condensation, rusting and equipment damage.
In addition the factory recommends that wheels must be
blocked to prevent their being rotated by the wind.
Arr. 9 units can be side wall mounted, ceiling
suspended by rods, supported upside down from the
ceiling or by brackets for a ceiling hung mounting.
Warning: For duct support, the fan should be
supported by the fan’s integral casing flange, not by a
companion flange (for slip duct connection) supplied
as an accessory. The duct must be sufficiently braced
to support the fan and the motor and to prevent
vibration.
IV. INSTALLATION
WARNING! If gases, other than clean air, are to be exhausted
using the fan, then the user bears the responsibility of
determining that the fan is appropriate and safe for the
application.
WARNING! Open all disconnect switches, secure in that
position and allow all rotating or revolving equipment to stop
before removing belt guard, installing or servicing unit. Failure
to do so may result in personal injury or death from electrical
shock or rotating parts.
WARNING! The drive motor and V-belt drive components,
when supplied with the centrifugal fan, have been carefully
selected for this unit’s operating conditions as specified.
Changing the drive motor or V-belt drive components could
result in unsafe operating conditions which could cause
personal injury and/or any of the following:
1. Shaft failure
2. Fan failure
3. Bearing failure
4. Excessive belt wear
5. Motor overload
A. Variable Frequency Drives and Motors
Arr. 9 fans furnished with a mounting base should be
firmly bolted to the foundation or vibration mountings.
Warning: For all mountings options, the ducts must be
braced sufficiently to support the weight of the fan and
motor and to prevent vibration during operation.
C. Elevated Temperatures
Standard steel and aluminum fan construction is good for
-20ºF (-29ºC) to 150ºF (66ºC). Steel fans for handling air up
to 300ºF (149ºC) draw outside air through the belt tube and
inner cylinder. Therefore, care should be taken so as to not
restrict entry to the belt tube. Ambient air should not exceed
100ºF (38ºC).
D. Access
Belts are readily accessible and can be inspected or
replaced without disturbing the installation other than to
remove belt guards or weatherproof hoods, if they are part
of the unit. Access to bearings requires removable door or
duct sections at the discharge end of the fan or removal of
the unit from the duct system.
E. Fan Wheels
All fan wheels are balanced before shipment. They should
fit the shaft snugly. The key should fit both the fan hub and
shaft snugly, and the set screws should be tightened to the
appropriate torque.
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 inverter; if possible,
the motor and the inverter should be from the same
manufacturer or at least the inverter 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.
B. Types of Mounting Supports
Series QBMX Mixed Flow Fans are designed for horizontal
or vertical operation and are so designated by the suffix
letter H or V following the size number; i.e. Size QBMX27V.
Horizontal (H) units must be installed with the shaft
horizontal only. Vertical (V) units can be installed with the
shaft vertical to discharge air either up or down, or they can
be used with the shaft horizontal. QBMX fans can be
furnished with optional vibration isolation, either rubber or
spring type. Flexible duct connections should be used
when flexible mountings are used.
Rotation of the fan equipment and its corresponding fan
wheel is always designated as clockwise viewing it from the
drive side in accordance with AMCA Standards.
F. Bearings
Depending upon bearing speed required, anti-friction
bearings are grease lubricated at the factory.
If the bearings are received separate from the fan or if they
are removed from the fan for any reason, be sure to keep
them clean and free from dirt and other contaminants.
G. Alignment
Bearing alignment is critical even on many ball and roller
bearings designated as “self-aligning”. On all bearings, if
the dust and dirt seals are built into the bearing housing
and not part of the race or journal assembly, alignment
should center the shaft within one-half the normal radial
clearance at the edge of the casing, to prevent excessive
dust seal wear and possible shaft scoring.
H. Wheel/Inlet Installation
The wheel/inlet relationship on industrial fans is important if
optimum performance is to be obtained. The correct factory
placement of these parts can be disturbed by shipment and
handling. The inlet should be centered within the wheel
radially. Enlarged holes in the inlet bell allow for adjustment
of radial clearance when necessary. It is unlikely that the
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wheel should require movement on the shaft to correct the
overlap.
I. Drives
Sheaves should be firmly locked in position and the key
should fit tightly. Alignment is correct when the fan and
motor shafts are parallel and belts are perpendicular to the
shaft. A straight edge or taut cord may be used to line up
the sheaves. Belts should be under light tension and
should feel “live” when thumped. Belts should deflect
slightly under light pressure. Excessive tension should
never be applied since it will damage the cords and shorten
the life of the belts. Never pry the belts over the rim of the
sheave, but slack off on the take-up bolts until the belts can
be slipped over the rim of the sheaves. Prying the belts
over the rim of the sheave may break the cords and
shorten the life of the belts and may possibly damage the
fan.
For QBMX Mixed Flow Fans with belt tubes, make sure
belts are not rubbing against the internal belt guard. On
these fans, belt stretch may be taken care of by
re-positioning the motor base using the next higher base
holes.
J. Fan Pre-Operating Checklist
Without exception, it is recommended that all fans
include applicable guards and safety devices.
Equipment ordered without the applicable safety
devices is clearly the responsibility of the purchaser.
Further, the purchaser warrants that he has
determined and acquired any and all safety devices
required for equipment purchased.
Before putting the fan into operation, remove any shipping
wire or blocking holding the wheel and turn it by hand to be
sure it is free and not rubbing against the casing or inlet.
Check for tightness of the wheel on the shaft. Be sure
bearings are lubricated and in alignment. Check tightness
of bearing collars as they may loosen during shipment.
Check coupling, belts or applicable drive for alignment.
It is advisable to check fan rotation before final duct
connections are made. This is readily done by a
momentary application of electrical current to the driving
motor. The wheel should rotate clockwise when looking in
the discharge in accordance with AMCA nomenclature.
Factory mounted motors on fans may shift during shipment
requiring a check of the V-belt alignment and tension.
Re-position the motor for proper alignment and belt tension
if necessary. Re-position the motor on its base to take care
of belt tension.
Check wheel rotation when starting the unit to be sure it
conforms to the direction of the rotation arrow on the
casing.
Check bearing hold-down bolts and the locking collars or
other devices for tightness. Be sure to check the bearing
for lubrication. See the included bearing instruction book for
details.
The operation of the vane control should be checked
before the fan is started to make sure that all links are free,
that the operation is smooth, and that there is no distortion
of the casing to cause any binding. See the vane control
installation manual for details.
K. Set Screw Tightening Schedule
2. After 500 operating hours or three months, whichever
comes first, tighten set screws to the full recommended
torque.
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.
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
V. START-UP OPERATION CHECKLIST
Before putting any fan into initial operation the above
instructions must be followed. In addition, the following check
list must be completed.
A. Lock out the primary and all secondary power sources.
B. A complete inspection shall be made of all of the ductwork
and the interior of the fan. Make certain there is no foreign
material which can be drawn into or blown through the fan
or ductwork. Eyes should be protected against undetected
foreign material with safety goggles or other appropriate
means.
C. Make sure the mounting arrangement and the duct
connections are adequately designed in accordance with
the recognized acceptable engineering practices and with
the Company’s recommendations.
D. Check and tighten all hold-down/securing bolts.
E. Check the fan assembly and bearings for proper grounding
to prevent static electricity discharge.
F. Spin the impeller to determine whether it rotates freely and
is not grossly out of balance.
1. Before initial operation of the fan, tighten set screws
according to the procedure outlined below.
G. Inspect the impeller for proper rotation. Wheel rotates
CCW as viewed from the inlet or wheel.
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H. Check all set screws and tighten.
Max. Temp:
I. Check belt drive alignment; use recommended belt tension.
J. Check the belt drive for proper sheave selection and make
sure they are not reversed (excessive speeds could
develop).
K. Properly secure all safety guards.
L. Secure all access doors to the fan and ductwork.
M. Momentarily energize the fan to check the direction of
rotation. Wheel rotates CCW as viewed from the inlet or
wheel.
N. Switch on the electrical supply and allow the fan to reach
full speed. Check carefully for:
1. Excessive vibration
2. Unusual noise
3. Proper belt alignment
4. Proper lubrication
5. Proper amperage and voltage values
If any problem is indicated, SWITCH OFF IMMEDIATELY.
Lock out the electrical supply, secure the fan impeller if there is
a potential for windmilling (impeller turning due to a draft
through the system). Check carefully for the cause of the
trouble and correct as necessary.
Serial #:
VI. GENERAL OPERATION AND MAINTENANCE
The fans are balanced at the factory before shipping. The
vibration level of the fan installed on site is not the
responsibility of the Company unless specified in the purchase
contract.
The Company requires that the fans are operated within safe
limits of vibration (see the table below).
Due to the transport, installation, and seismic environment of
the fan the vibration levels may change after fan installation.
Therefore, the test run with measurement of vibration levels for
all new commissioned fans is required. This step will also
establish a baseline for future predictive maintenance. It is
common case that the fans require trimbalancing to achieve
the vibration at or below the start-up level (see the table
below).
Periodic vibration measurements are required for fans in
operation. During operation of the fan, the vibration level will
increase with time due to wear and other accumulated effects.
The increase of vibration level is reasonable and safe as long
as the level does not reach alarm levels.
If the vibration increases to the alarm level, action should be
taken to determine the cause. Operation of the fan at this
condition should be carefully monitored and steps for
eliminating the cause of the increased vibration should be
developed within a limited time.
Even if the fan appears to be operating satisfactorily, shut
down after a brief period and re-check items 1 through 4 below
as the initial start up may have loosened the bolts and set
screws.
The fan may now be put into operation, but during the first eight
hours of running it should be periodically observed and
checked for excessive vibration and noise. At this time, checks
should also be made of motor input current and motor and
bearing temperatures to ensure that they do not exceed the
Company’s recommendations or the motor/bearing
manufacturer’s recommendations.
After eight hours of satisfactory operation, the fan should be
shut down to check the following items and adjust, if necessary
(lock-out power and prevent windmilling).
1. All set screws and hold-down bolts
2. Belt drive alignment
3. Bearing housing temperature
4. Belt drive tension
After twenty-four hours of satisfactory operation the fan should
be shut down (power locked out) and the drive belt tension
should be re-adjusted to recommended tension.
Record fan nameplate information below for permanent
records:
Size:
Fan Designation:
If the vibration level increases to the shut-down level the fan
should be taken out of operation. Failure to reduce the
vibration over the shut-down level could lead to bearing failure,
development of cracks in fan structure, or ultimately a
catastrophic failure of the fan.
Furthermore, fans should be checked for vibration levels if the
fan sheave, bearings(s), and/or wheel were removed from the
fan shaft or the fan was moved from its installation position.
These requirements are in accordance with ANSI/AMCA204
Standard "Balance Quality and Vibration Levels for Fans"
where details on the subject can be found.
Vibration Limits for Measurements Conducted On-Site
Values shown are peak velocities of in/sec, vibration analyzer filter-out
Condition Fan rigidly mounted Fan flexibly mounted
Start-up 0.25 in./s 0.35 in./s
Alarm 0.40 in./s 0.65 in./s
Shut-down 0.50 in./s
The vibration measurement has to be made on the housings of the fan bearings
0.70 in./s
It is advisable to keep a record of vibration measurements in
any case but the record is required for warranty claims.
Maintenance should always be performed by experienced and
trained personnel. Do not attempt any maintenance of a fan
unless the electrical supply has been locked out or tagged out
and the impeller has been secured.
Max. RPM:
Provision should be made for periodic inspection of the interior
of the unit and wheel. This may consist of an access door in
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the duct or an easily removable section of ductwork before and
after the unit. Inspection is particularly important when fans are
handling corrosive fumes, dirty or elevated temperature gases.
3. Wheel or sheave loose on shaft
4. Loose or worn bearings
Fan wheels having badly worn blades should be replaced or
rebuilt. Rebuilt or repaired fan wheels require careful balancing
before being returned to service. Experienced personnel can
give the wheel a running balance operating on its own shaft
and bearings.
Standard fans handling corrosive fumes should have the
internal parts cleaned and then painted with corrosion-resisting
paint. Re-coating should be repeated when the paint film
begins to show signs of deterioration. Be sure to follow the
paint manufacturer’s instructions for cleaning and coating.
When a V-belt must be replaced, replace the entire set of belts
as new belts will not work properly in conjunction with used
belts, due to the difference in length.
Good fan maintenance consists of systematic and regular
inspection, testing, care and adjustment, together with the
repair or replacement of worn parts before failure occurs.
Experience will best determine the frequency of the various
maintenance operations, since the requirements will vary
widely, depending upon the severity of the application and local
conditions. However, once a schedule of maintenance
operations has been set up, it should be carefully adhered to
for best results.
The successful operation of a fan depends to a large extent on
the reliable operation of the bearings and the balance of the fan
wheel.
A. Lubrication
Bearings require maintenance and attention whether in
storage or operation. All assembled fan bearings are
pre-lubricated at the factory according to the bearing
manufacturer’s instructions. All bearings should be
inspected prior to start-up to insure the fan turns freely.
Check the bearings after a short interval of operation to be
certain they are not overheated.
Propeller shaft bearings should be inspected on maximum
three month intervals. Propeller shaft bearings are
prelubricated, sealed and normally require no service. If a
bearing is a source of noise and/or excessive heat or is
loosing lubricant it must be replaced. It is recommended
that any bearing be replaced at a maximum five year
period. For normal operating conditions, use a grease
conforming to NLGI No. 2. CAUTION! Do Not over
lubricate. Lubricating bearings with a high pressure gun
can blow bearing seals. A low pressure grease gun should
be used for fan bearings and preferably either the gun or
the fittings should be vented. Apply only a small amount of
grease to prevent overfilling. This is especially important
when extended lubrication piping is used and the bearing
cannot be observed. All QBMX Mixed Flow Fans are
furnished with extended grease lube as standard.
Motors should be lubricated in accordance with the
manufacturer’s instructions.
B. Vibration Causes
All wheels are statically and dynamically balanced at the
factory and alignment is checked. If vibration is noticed,
check the following:
1. Bearing and drive alignment
2. Shaft straightness
5. Loose mounting bolts
6. Motor out of balance
7. Sheaves out of balance
8. Worn or corroded wheel
9. Accumulation of material on wheel
10. System design problems - One frequent system
problem is too high a static pressure for the fan
ordered. In other words, the actual system pressure
turns out to be higher than the pressure assumed at the
time the fan was ordered. This leads to the fan
operating in the stall region, which can cause excessive
vibration and eventual failure of the fan.
WARNING! Care must be taken when cleaning the
wheel to remove grease and other foreign particles.
Damage to the wheel can occur if it is hit or if pressure
is applied causing the wheel to be distorted. Either
case can cause serious vibration and damage to the
fan.
In the case of accumulated paint spray, the wheel may be
removed and cleaned in accordance with the paint
manufacturer’s instructions for both the coating applied and
the underlying metal.
C. Renewal Parts
When continuous fan operation is vital, it is recommended
that spare parts such as bearings, V-belts, and in some
cases, wheels be kept on hand for emergencies.
Renewal parts should be ordered from the local sales
office. All nameplate data should be provided, such as fan
type, size, style and serial number. Describe the part
accurately and if the equipment appears to be special, or if
there is any doubt as to the description, include a
dimensional sketch of the part required.
VII. INSTALLATION CHECKLIST
A. Comply with all Federal, State and local codes and
regulations.
B. Always utilize trained and experienced personnel.
C. Always use safe and inspected tools and equipment.
D. Properly install all drive and inlet/outlet guards.
E. Confirm that fan accessories and motor are properly wired
and fan is isolated from causing a shock.
F. Check that location for fan is completed and ready to
accept fan upon arrival.
G. Check that cranes, tools and equipment needed for
installation are available.
H. Confirm that properly trained personnel are available and
prepared to handle fan.
I. Locate identifying paperwork such as Packing List and Bill
of Lading.
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J. Compare paperwork with items being received for proper
items and quantity.
3. Check set screws in hub for tightness to shaft. Check
wheel for looseness.
K. Inspect fan for damage such as dents, scrapes, bent
shafts, broken parts, etc. Inspect carefully if signs of abuse
during transit are obvious.
L. Notify carrier in writing of any problems immediately.
M. Notify your local representative of any discrepancies or
damage and what has been done to correct it.
N. Read nameplate and identify fan and jobsite location.
Compare with jobsite paperwork.
O. Verify all parts are present, properly assembled and in
working order.
P. Verify proper discharge and rotation.
Q. If fan is assembled, verify that the wheel and shaft turn
freely without noise and appear to be balanced.
R. Verify that bearings have been lubricated. Verify that
coupling, if supplied, is lubricated.
S. Verify nameplate data once again. Be sure the correct fan
is on the correct application.
T. Casing Interfaces
1. Verify that all tie-down mounting/hanging bolts are tight.
Verify motor is tied down and adjusted.
4. Check key for tightness.
V. Shaft/Bearings
1. Verify that the shaft appears straight and the key is in
both ends.
2. Verify that bearings are lubricated, set screws or
locking collars are tight. Check bearing mounting bolts
for tightness.
3. Verify that seals are adjusted and properly assembled.
4. Verify fan is aligned properly.
W. V-Belt Drives
1. Verify that the fan sheave is on fan and motor sheave is
on the motor and are not switched. Set screws are
tight.
2. Verify that the fan and motor sheaves are parallel.
3. Verify that the fan and motor sheaves are aligned and
adjusted to the proper diameters, if variable speed.
4. Verify belt tension according to specifications. All belts
are to be equally loaded and matched.
2. Verify that access doors, drains and other accessories
are attached and connected properly.
3. Verify that all guards and safety items are in place and
adjusted.
4. Verify all ductwork is in place and is not being
supported by the fan.
U. Wheel
1. Verify that the wheel is the correct rotation and in
accordance with specifications.
2. Verify wheel is free to turn. Adjust if necessary. Check
for inlet spacing around the wheel.
5. Verify that all guards are in place and adjusted.
6. Insure belts are not rubbing against the internal belt
tube.
X. Accessories
1. Verify all dampers, inlet vanes or other controls are in
working order.
2. Make sure all tools, personnel and debris are removed
from fan/system.
3. Verify motor is wired to correct voltage. “Bump” to
confirm that rotation is correct.
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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.
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
herein shall be paid by the Purchaser, or in lieu thereof
TERMS AND CONDITIONS OF SALE
the Purchaser shall provide the Company with a tax
exemption certificate acceptable to the taxing authori
ties.
CANCELLATION Any contract resulting from the Pur
chaser’s order may be canceled by the Purchaser only
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 Prices are subject to change
upon notice by the Company. Prices on existing or
ders are subject to surcharges in the event of cost in
creases of metals and transportation. All complete
-
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 sub
ject to adjustment to the price at time of shipment re
gardless 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
pany recommends that all orders include applicable
safety devices. Products ordered without applicable
safety devices is clearly the responsibility of the Pur
chaser. Further, the Purchaser warrants that it has de
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
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
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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.
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
ing on the Company’s quotation, sales order acknowl
edgment and invoice.
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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.
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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December 2011 613153
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