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.
Axial Fan
Description
PennBarry fans consist of a fan housing, impeller, shaft, bearings and motor mounting plate (where required). All impellers are
statically and dynamically balanced.
Receiving and Inspection
PennBarry fans are carefully inspected before leaving the factory. When the unit is received, inspect the packaging for any signs of
tampering. Inspect the unit for any damage that may have occurred during transit and check for loose, missing or damaged parts.
Mishandled units can void the warranty provisions. If units are damaged in transit, it is the responsibility of the receiver to make all
claims against the carrier. PennBarry is not responsible for damages incurred during shipment.
Avoid severe jarring and/or dropping. Handle units with care to prevent damage to components or finishes. If the unit is scratched due
to mishandling, the protective coating may be damaged. Incorrect lifting may damage the fan and void the warranty.
Handling
Long Term Storage (Over 1 month)
Fans should be hoisted with slings placed
around the fan housing. When a single
hoist is used, a "spreader" will keep the
sling from slipping on the housing. If it is
necessary to use hooks placed in lifting
holes of fan, BE CAREFUL NOT TO
DISTORT OR BEND THE HOUSING.
Large units may have lifting lugs or holes
which should be used only to stabilize
the unit while using a sling to support the
weight.
Long-term storage is defined as storage
for period exceeding one month from the
date the equipment was received. Fans
and motors should be stored in a dry, low
humidity area indoors.
Chain or wire slings should be well-padded
where they contact the fan, especially
where special coatings and paints are
involved. Rubber, phenolic enamels, etc.
require special care as they may easily
be damaged by contact in lifting. Even
a small chip will destroy the corrosion
prevention seal of the coating and allow
corrosion to start. Always repair scratched
surfaces with touch up of like coating prior
to installation.
Storage
Store in a dry, protected area being sure
fan shaft, bearings and impeller are
protected against dust and corrosion.
If it is necessary to store outdoors or within
a building under construction, special
care must be taken to prevent moisture,
corrosion, dirt or dust accumulation. Coat
the shaft with grease or rust preventative
compound. Cover and seal bearings
to prevent entrance of contaminants.
Impeller should be rotated at least once a
month to circulate the grease in bearings.
If stored outdoors over seven (7) days,
cover completely with a tarp or heavy
waterproof paper. Electrical connections
and leads must be protected from
moisture. Block impeller to prevent natural
rotation. Do not allow material of any kind
to be piled on top or inside of fan.
1401 North Plano Road, Richardson, Texas 75081
Phone: 972.234.3202 ■ Fax: 972.497.0468
Equipment which is to be installed, but
not operated for several months, should
first be blocked to take the weight off of
the vibration isolators (if provided), and
then given the same protection, periodic
inspection and maintenance as a unit in
storage.
To prevent puddle corrosion of fan
bearings that undergo long-term storage
the following preventive maintenance
must be performed:
1. Fan bearings must be relubricated
every month until the fans are put
into service. A clear 1/16" bead of
grease must appear on each side of
the bearings. Fan wheels are to be
rotated manually while the bearings
are relubricated. Refer to the specific
bearing lubrication instructions located
on the fan housing for the type of
lubricant to use.
2. Inlet vanes should be operated at
least once a month while in storage.
A spray lubricant such as:
Dow Corning Molykote 557
Dow Corning Molykote G SprayBonded Lubricant
or equivalent should be applied to
the bushing joints to assure corrosion
protection while in storage.
3. Motor bearings should be lubricated
as recommended by the motor
manufacturer.
Surface Protection
Most fans are available with special
paint finished to protect the fan against
a wide variety of adverse conditions. The
standard finish furnished without additional
charge is well suited for indoor use. Fans
installed in severe outdoor applications
(i.e., coastal areas, etc.) may require
additional surface protection. The outdoor
finish must be compatible with Alkyd base
paint. Architecturally pleasing colors are
available from many paint manufacturers.
This allows the owner to make the
outside color choice at the time of the fan
installation to match architectural features
of the building.
Bearing Protection
Fans equipped with standard duty
bearings have been test run at the factory.
These bearings are prelubricated and
should not require any additional grease
for startup. However, if unit is not put in
service immediately, it is advisable to add
lubricant so as to expel any air voids in
the bearing reservoir which may ultimately
collect condensation or moisture. The
excess lubricant which is expelled at
startup through the seals should not be
replaced. This purging action will permit
cooler operation and remaining grease
will be adequate to properly lubricate
the bearing. During the inactive period,
the bearing should be protected from the
elements by a securely attached plastic
film and rotated several turns once a
month. On belt driven units, it is advisable
to protect the bearings from contamination
by covering the belt guard opening with a
suitable material. Belts should be removed
from the motor sheave and stored in the
guard. This will allow both the guard and
the motor to be completely covered with a
waterproof material.
Safety Precautions
DO. . . .
1. Make sure unit is stopped and
electrical power is locked out before
putting hands into inlet or outlet
Printed in the USA Feb 2005
PART #16203400
Operation and Maintenance Manual
opening or near belt drive. We
suggest a LOCK-OUT and a warning
sign on the start switch cautioning not
to start the unit.
2. Follow maintenance instructions.
3. Make sure all drive guards are
installed at all times fan is in
operation. If the inlet or outlet is
exposed, a suitable guard should
also be installed.
4. Take special care not to open any fan
or system access panels while the
system is under pressure (negative
or positive).
5. Never allow untrained or unauthorized
persons to work on equipment.
6. Take special care when working near
electricity. Also insure the power is
off and can not be turned on while
servicing the fan.
7. Keep area near equipment clean.
CAUTION . . . .
1. DO NOT put hands near or allow
loose or hanging clothing to be near
belts or sheaves while the unit is
running.
2. DO NOT put hands into inlet or outlet
while unit is running. It is sometimes
difficult to tell whether or not it is
running . . . be sure it is not running
and cannot be operated before doing
any inspection or maintenance.
3. DO NOT operate fan with guards
removed.
4. DO NOT take chances.
SAFETY FIRST!!!
Installation
Mounting holes have been provided for
mounting to either stationary or resilient
bases. Fans must be located and fastened
firmly in a level position. The motor and
drive are then mounted in their proper
relative positions, if not already mounted
on the fan.
Propeller Clearance
Before staring up a fan, the prop should be
inspected to assure that the assembly has
not shifted while in transit. Incorrect prop
clearance could cause damage to the prop
and housing, and lower the efficiency of
the fan. The clearance between the prop
and housing should be equal around the
entire circumference of the prop.
Motor and Drive Alignment
It is important that motor pulleys and fan
pulleys be properly aligned to allow belts
to run true and straight. Misalignment can
2
PENNBARRY
Axial Fan
result in blower noise and excessive belt
wear.
Belt Tension
To assure performance and belt life,
proper tensioning of the belts is required.
Adjustable motor bases are provided on
Arrangement 9 fans for belt tensioning.
Belt tension should be provided such that
belt slippage does not exceed one (1)
second duration at fan start up. Check belt
tension at least two (2) times during the
first day of operation.
Fan Rotation
Fan rotation per AMCA is determined from
the discharge end of the fan. PennBarry
provides a rotation sticker on the fan
housing for verification. Bump start the
fan to confirm rotation is correct before
running fan at full speed. Running the
fan in reverse may overload and possibly
damage the motor.
Motors
Always disconnect or
shut off electrical power
before attempting to service fan and
and/or
/or motor
motor..
All AC induction motors will perform
satisfactorily with a 10% variation in
voltage, a 5% variation in frequency or a
combination voltage-frequency variation
of 10%. For motors rated 208-220 volts,
the above limits apply only to 220 volt
rating. To select control for 208-220 volt
motors, use same amps for either 208 or
220 volts.
Motors are received with bearings
lubricated and require no lubrication
for some time depending on operating
conditions. (See MAINTENANCE section
on Motor Bearings)
TO REVERSE DIRECTION OF ROTATION
Single Phase Motors
Shaded Pole Rotation cannot be reversed
unless motor is constructed
so that the shading coil on
one half of the stator pole
can be shifted to the other
half of the stator pole.
Split Phase
Capacitor
Repulsion
Interchange connections
to supply of either main or
auxiliary winding.
All types of capacitor motors
are reversed in rotation by
interchanging connections
to supply of either main or
auxiliary winding.
Remove plate on motor
end bracket and turn
bracket (holding Brushes) in
direction
opposite
to
direction of existing rotation.
NOTE: It is suggested that rotation change
be made for single phase motors by the
manufacturer's approved repair shop.
Three Phase Motors
To reverse rotation, interchange any two
line leads.
Normal operation of motors results in
temperature rise. Permitted temperature
rise depends on type of motor installation.
The total motor operating temperature
includes ambient temperature plus motor
temperature rise. The motor temperature
rise includes nameplate temperature rise,
service factor allowance and hot spot
allowance.
IMPORTANT NOTE:
MOTORS ARE WARRANTED BY
THE MOTOR MANUFACTURER.
PENNBARRY WILL ASSIST IN
LOCATING A LOCAL VENDOR
APPROVED REPAIR SHOP,
IF REQUIRED.
Motor Lubrication
and Maintenance
Regrease or lubricate motor bearings
according to manufacturer's recommendations. DO NOT OVER LUBRICATE.
Motor manufacturer's lubrication recommendations are printed on tags attached
to motor. Should these tags be missing
the following will apply:
FRACTIONAL HORSEPOWER BALL
BEARING MOTORS:
Under normal conditions, ball bearing
motors will operate for five years without
relubrication. Under continuous operation
at higher temperature (but not to exceed
140°F ambient) relubricate after one year.
INTEGRAL HORSEPOWER BALL
BEARING MOTORS
Motors having pipe plugs or grease
fittings should be relubricated while warm
and at a stand still. Replace one pipe plug
on each end shield with grease fitting.
Remove other plug for grease relief. Use
low pressure grease gun and lubricate
until grease appears at grease relief.
Allow motor to run for 10 minutes to expel
excess grease. Replace pipe plugs.
Recommended relubrication intervals—
general guide only.
H.P.
Range
Standard
Duty
8 Hr./Day
Severe Duty Extreme Duty
24 Hr./Day
Very Dirty
Dirty, Dusty High Ambients
1 1/2 - 7 1/2
5 Years
3 Years
9 Months
10 - 40
3 Years
1 Year
4 Months
50 - 150+
1 Year
9 Months
4 Months
These ball bearing greases or their
equivalents are satisfactory for ambient
temperatures from 20°F to 200°F.
1401 North Plano Road, Richardson, Texas 75081
Phone: 972.234.3202 ■ Fax: 972.497.0468
Operation and Maintenance Manual
Axial Fan
Chevron SRIU #2 (Standard Oil of
California)
Chevron BRB #2
(Standard Oil of
California)
Premium RB
(Texaco, Inc.)
Alvania No. 2
(Shell Oil Company)
Make certain motor is not overloaded.
Check amps. with nameplate.
KEEP MOTORS DRY. Where motors
are idle for a long time, single phase
heaters or small space heaters might be
necessary to prevent water condensation
in windings.
Start-Up
Before Start-Up:
Fastenings - It is recommended that all
foundation bolts, impeller hub set screws
and bearing set screws be checked for
tightness before start-up.
Access Doors - They should be tight and
sealed.
NOTE: The maximum torque values for
weld studs are as follows:
STUD SIZE
TORQUE
(FL. LBS.)
1/4"
5
15/16"
10
3/8"
17
1/2"
39
5/8"
83
The fan bearings, whether pillow block
or flange mounted, are prelubricated and
should not require additional grease for
start-up.
"Bump" the motor to check for proper
impeller rotation. The motor should be
started in accordance with manufacturer's
recommendations.
Bearings - Check bearing alignment and
make certain they are properly locked to
shaft.
Impeller - Turn over rotating assembly
by hand to see that it runs free and does
not bind or strike fan housing. If impeller
strikes housing, it may have to be moved
on the shaft or bearing pillow blocks and
reshimmed. Check location of impeller in
relation to fan inlets. Be sure fan housing is
not distorted. See ALIGNMENT section.
Driver - Check electrical wiring to the
motor. See MOTOR section.
Guards - Make certain all safety guards
are installed properly.
Belt Drive - Must be in alignment; with
belts at proper tension. See BELT DRIVE
section.
1401 North Plano Road, Richardson, Texas 75081
Phone: 972.234.3202 ■ Fax: 972.497.0468
Duct Connections - The connections
from fan to ductwork must not be distorted.
Ducts should never be supported by
the fan. Expansion joints between duct
connections should be used where
expansion is likely to occur or where the
fan is mounted on vibration isolators. All
joints should be sealed to prevent air leaks
and all debris removed from ductwork and
fan.
Dampers and Variable Inlet Vanes (VIVs) –
They should operate freely with blades
closed tightly. All dampers and VIVs should
be partially closed during starting periods
to reduce power requirements. This is
particularly important for a fan designed
for high temperature operation being "run
in" at room temperature or at appreciably
less than design temperature. When air is
up to temperature, the damper or VIV may
be opened. Complete closing of dampers
could cause the fan to run rough.
Fan may now be brought up to speed.
Watch for anything unusual such as
vibration, overheating of bearings and
motors, etc. Multi-speed motors should
be started at lowest speed and run at high
speed only after satisfactory low speed
operation. Check fan speed on belt drive
units and adjust motor sheave to give
the desired RPM. Balance system by
adjusting damper or VIVs.
At first indication of trouble or vibration,
shut down and check for cause of
difficulty.
Maintenance
Always disconnect or shut off fan
before attempting any maintenance.
A definite time schedule for inspecting all
rotating parts should be established. The
frequency of inspection depends on the
severity of operation and the location of
the equipment.
Fan bearing alignment should be checked
at regular intervals. Misalignment can
cause overheating, wear to bearing dust
seals, bearing failure and/or unbalance.
Fan bearings should be lubricated at
regular intervals. Periodic inspection
will be necessary. If grease is found to
be breaking down, replenish grease by
pumping new grease into bearing until all
the old grease has been evacuated. See
section on BEARING LUBRICATION.
Bearings on high speed fans tend to run
hot: 75°F to 100°F above ambient. Do not
replace a bearing because it feels to hot
to touch. Place a contact thermometer
against the bearing pillow block and check
the temperature. Before you investigate
high temperature, realize that ball or
roller bearing pillow blocks can have a
total temperature of 225°F (107°C). High
temperature bearings are rated at 425°F
(218°C).
Foundation bolts and all set screws should
be inspected for tightness.
Fans should be inspected for wear and
dirt periodically. Any dirt accumulated in
housing should be removed. The impeller
may have to be cleaned. A wash down
with steam or water jet is usually sufficient,
covering bearings so water will not enter
the pillow blocks. Impellers having worn
blades should be replaced. Impellers
require careful rebalancing before
being returned to service. Replacement
impellers should have the balance
checked upon start-up and corrected as
required to operate properly in it's specific
application.
Repairing of exterior and interior parts of
fans and ducts will extend the service life
of the installation. Select a paint which will
withstand the operating temperatures. For
normal temperatures a good machinery
paint may be used. Corrosive fumes
require all internal parts to be wire
brushed, scraped clean and repainted
with an acid resisting paint. Competent
advice should be sought when corrosive
fumes are present.
Blow out open type motor windings with
low pressure air to remove dust or dirt.
Air pressure above 50 psi should not
be used, as high pressure may damage
insulation and blow dirt under loosened
tape. Dust can cause excessive insulation
temperatures. Do not exceed OSHA air
pressure requirements.
Excessive vibration will shorten the life
of any mechanical device. Correct any
imbalance situation before returning fan
to service.
LUBRICATION OF HINGE BEARINGS
ON POWER ROOF VENTILATORS
Stack cap damper hinge bearings are
oil impregnated and may never need
lubrication. A drop or two of 10W30 motor
oil every 6 to 12 months will not hurt the
bearings. Check damper operation to
detect binding or checking. Adjust hinge
pin bearing bracket to resume free damper
operation.
SHAFT COOLING WHEEL OPTION
(HIGH TEMPERATURE UNITS)
For some high temperature applications,
a shaft cooling wheel is factory installed.
Fan maintenance may require the cooling
wheel to be removed. Be certain to
reassemble the cooling wheel with the
fins towards the bearings. Reversing
the assembly will heat rather than cool
the shaft. Mark one side of the split in
the cooling wheel and match mark the
shaft so that the cooling wheel can be
PENNBARRY
3
Operation and Maintenance Manual
repositioned on the shaft where it was
originally installed. Changing the angular
position of the cooling wheel on the shaft
will affect the dynamic balance of the fan.
LUBRICATION LINES - PLASTIC OR
COPPER
Lubrication lines installed at the factory
are not filled with grease at the factory.
Caution must be used when first greasing
the bearings to purge air from the lines
without blowing bearing seals or overgreasing a bearing.
ADJUSTABLE MOTOR BASE
Belt drives can be aligned and adjusted
by loosening clamping bolts and sliding
motor axially and retightening. Belt tension
can be fine tune adjusted by loosening or
tightening the adjustment bolts. Loosen
clamping bolts first, then adjust adjusting
bolts and retighten clamping bolts. Belt
tension is adjusted with the adjusting bolts
and maintained with the clamping bolts.
FAN MECHANICAL BALANCING
Fan impellers are balanced statically and
dynamically by the factory, but may require
further trim balancing. The final installed
vibration level of the fan is also dependent
upon its installation and foundation. Fans
shipped completely assembled have been
trim balanced at the factory.
Before any attempt is made at
balancing, check for any other causes
of vibration or unbalance as listed in the
TROUBLESHOOTING CHECKLIST.
A fan handling clean air should not need
rebalancing after original balance. Dust
build-up on fan blades or wear can cause
fan unbalance. Periodic inspection of the
fan should be made to determine the
amount of dirt build-up or wear.
Portable instruments are available that
will indicate vibration in mils (1 mil = 0.001
inches). Each fan has a Quality Assurance
label affixed to the fan. All pertinent
information on factory balance is recorded
on the label for the owner's information
and use.
IMPORTANT NOTE:
THE FAN MUST BE CHECKED AND
CORRECTED FOR ANY OUT OF
BALANCE CONDITION ANY TIME
A COMPONENT OF THE ROTATING
ASSEMBLY IS REPLACED OR
ALTERED.
Axial Fan
to assume that the bearing has not been
lubricated. Always turn fan off before
lubricating.
For grease lubricated ball or roller bearing
pillow block, a good grade of grease, free
from chemically or mechanically active
material should be used. These greases
are a mixture of lubricating oil and a soap
base to keep the oil in suspension. They
have an upper temperature limit where
oil and soap base oxidize and thermally
decompose into a gummy sludge.
of the seals or by examination of the grease
in the housing. An average installation
where the environmental conditions are
clean and room temperatures prevail may
only require bearing lubrication every
3 to 6 months, while operation in a dirty
atmosphere at high temperatures will
require much more frequent intervals.
Base your particular interval on condition
of grease after a specific service period.
The chart below is intended as a guideline
for your consideration. (Figure 1)
Mixing of different lubricants is not
recommended. If it is necessary to change
to a different grade, make or type of
lubricant, flush bearing thoroughly before
changing. Regreasing will vary from 3
months to a year depending on the hours
of operation, temperature and surrounding
conditions. Special greases may be
required for a dirty or wet atmosphere
(consult your lubricant supplier).
BELT DRIVES
When grease is added, use caution to
prevent any dirt from entering the bearing.
The pipe plug or grease relief fitting should
be open when greasing to allow excess
grease to flow out. The pillow block should
be about 1/3 full, as excess grease may
cause overheating. Use a low pressure
gun.
● The motor and fan shafts must be
properly aligned, with the center line
of the belts at a right angle to the
shafts.
These ball bearing greases or their
equivalents are satisfactory for ambient
temperatures from 20°F to 200°F.
Chevron SRIU #2 (Standard Oil of
California)
Chevron BRB #2
(Standard Oil of
California)
Premium RB
(Texaco, Inc.)
Alvania No. 2
(Shell Oil Company)
Fans shipped completely assembled have
had the belt drive aligned at the factory.
Alignment must be checked before
operation.
● Be sure sheaves are locked in
position.
● Key should be seated firmly in
keyway.
● Start the fan. Check for proper
rotation of impeller. Run fan at full
speed. A slight belt bow should
appear on the slack side. Adjust belt
tension by adjusting motor on its
adjustable base.
● If belts squeal excessively at startup, they are too loose and should be
tightened.
● When belts have had time to seat
in the sheave grooves, readjust belt
tension. Check belt tension after 8, 24
and 100 hours of operation.
FREQUENCY OF LUBRICATION
BELT DRIVE ASSEMBLY CAN BE
MOUNTED AS FOLLOWS:
The
bearings
are
lubricated
at
predetermined intervals and the condition
of the grease established as it is purged out
● Clean motor and drive shafts. Be
sure they are free from corrosive
material. Clean bore of sheaves and
Figure 1: Frequency of Lubrication
OPERATING SPEED (RPM)
SHAFT SIZE
500
1000 1500
200
2500 3000 3500 4000
450
5000
LUBRICATION FREQUENCY (Months)
.50" - 1.00"
6
6
6
6
6
6
4
4
2
2
1.06" - 1.44"
6
6
6
6
6
6
4
4
2
1
LUBRICATION OF ANTI-FRICTION
BEARINGS
1.50" - 1.75"
6
6
6
4
4
2
2
2
1
1
Bearings on assembled fans receive
their initial lubrication from the bearing
manufacturer. Bearings shipped separate
from the fan or as a replacement may not
be lubricated before shipment. When there
is the slightest doubt, the safe practice is
1.88" - 2.19"
6
6
4
4
2
2
1
1
1
2.25" - 2.44"
6
4
4
2
2
1
1
1
2.50" - 3.00"
6
4
4
2
1
1
1
3.06" - 3.50"
6
4
2
1
1
1
3.56" - 4.00"
6
4
2
1
1
4
PENNBARRY
1401 North Plano Road, Richardson, Texas 75081
Phone: 972.234.3202 ■ Fax: 972.497.0468
Operation and Maintenance Manual
Axial Fan
coat with heavy oil for ease of shaft
entry. Remove oil, grease, rust or
burrs from sheaves. Place fan sheave
on fan shaft and motor sheave on its
shaft. DO NOT POUND ON sheave
as it may result in damage. Tighten
sheaves in place.
● Move motor on base so belts can be
placed in grooves of both sheaves
without forcing. Do not roll belts or use
tool to force belts over grooves.
● Align fan and motor shafts so they are
parallel. The belts should be at right
angles to the shafts. A straight edge
or taut cord placed across the faces
of the sheaves will aid in alignment
with single groove sheaves. If multiple
groove sheaves are installed, use
the center line of the drive as your
alignment point.
● Tighten belts by sliding motor in its
base. Correct tension gives the best
efficiency. Excessive tension causes
undue bearing pressure.
● Be sure all safety guards are in place.
● Start the fan and run at full speed.
Adjust belt tension until only a slight
bow appears on the slack side of the
belts. If slippage occurs, a squeal will
be heard at start-up. Eliminate the
squeal by tightening the belts.
● Belts require time to become fully
seated in the sheave grooves. Check
belt tension after 8, 24 and 100 hours
of operation. Allowing belts to operate
with improper tension will shorten belt
life substantially.
● If the shafts become scratched or
marked, carefully remove the sharp
edges and high spots such as burrs
with fine emery cloth or a honing
stone. Avoid getting emery dust in the
bearings.
● Do not apply any belt dressing unless
it is recommended by the drive
manufacturer. Belts are designed for
frictional contact between the grooves
and sides of the belts. Dressing will
reduce this friction.
● Minimum belt center distances are
available from factory upon request.
1401 North Plano Road, Richardson, Texas 75081
Phone: 972.234.3202 ■ Fax: 972.497.0468
● Belt tension on an adjustable pitch
drive is obtained by moving the motor,
not by changing the pitch diameter
of the adjustable sheaves.
Disassembly of Fan
Before removing any equipment, the fan's
power source should be locked "off" for
personal safety. The position of mating
parts such as bearing, drive, etc., should
be marked in their relative position for
simplifying assembly.
1. Remove all safety guards.
2. Disconnect ducting or supports to
remove fans.
3. Remove drive cover plate to provide
access to inner housing for Arr. 9 fans.
4. Remove drive from fan.
5. Clean off the shaft, removing dirt and
burrs and lubricate with oil for bearing
and wheel removal.
6. Loosen setscrews on pillowblock
bearing and remove the bearings
(Arr. 9 fan only). Bearing bars should
be checked with straightedge to
determine if the bar has a crown, and
bearings shimmed accordingly when
assembled.
7. Wheel removal:
a. Tubeaxial Belt Drive (TXB) Arr. 9
fans have a fan shaft with two (2)
bearings supporting the wheel.
The wheels are mounted to the fan
shaft with taperlock bushings in the
wheel hub.
b. Tubeaxial Direct Drive (TXD) Arr. 4
fans have a standard foot mounted
motor directly coupled to the
wheel. The wheels are mounted
to the motor shaft with taperlock
bushings in the wheel hub. On
TXD, Arr. 4 fans with standard
NEMA motors, no wheel retaining
device is used.
Assembly of Fans
To reassemble fan, reverse the process
as listed above. Care should be taken
once the fan is reassembled to assure
components are firmly fastened and
aligned. Shimming of bearings may be
required to attain proper bearing and
shaft alignment. Also, the straightedge
should be laid across the full-length of
the bearing mounting plate to determine
if a crown exists. Shim each bearing
accordingly. Wheel clearances and split
housed bearing assembly tolerances must
be adhered to. PennBarry requires that for
any rotating assembly replacements, the
fan should be rebalanced.
Vibration Tolerances
All fans are dynamically balanced at the
factory before shipment. The dynamic
balance is made utilizing a PMC, IRD or
Schenck analyzer at the operating speed
if known, or the maximum RPM of the
unit. Measurements are taken off both
bearings in mil readings of displacement.
The readings will meet or exceed the
guidelines as established in AMCA Std.
204-96, "Balance Quality and Vibration
Levels for Fans." Final measurements
are recorded on PennBarry's inspection
copies. When motors and drives are not
provided by PennBarry it will be necessary
for the customer to provide a trim balance
in the field.
Ordering Replacement Parts
When ordering replacement parts it is
necessary to provide PennBarry with the
serial number of the unit and/or the original
shop order number on which the fan was
ordered. Typical replacement parts are as
follows:
1. Wheel
2. Housing
3. Shaft
4. Bearings
5. Motor
6. Drives
When ordering replacement parts, specify
any required accessories, such as special
material, flanges and coatings. This will
assure that the replacement parts are
correct.
PENNBARRY
5
Operation and Maintenance Manual
Axial Fan
Vibration Severity Chart
40
30
Sh
ut
VIBRATION DISPLACEMENT - MILS - PEAK-TO-PEAK
20
15
10
Ro
Sli
8
7
6
5
tly
Fai
3
0.8
0.7
0.6
0.5
h
Ro
ug
0.80 IN/SEC
h
0.40 IN/SEC
od
1.5
1.0
r
Go
2
wn
ug
gh
4
Do
Sm
3600
3000
2500
Values are for filtered
readings taken on the
bearing caps.
VIBRATION VELOCITY - IN/SEC - PEAK
60
50
2000
1800
1500
1200
1000
900
800
700
600
500
400
300
Vibration Frequency* - CPM
0.20 IN/SEC
oo
th
0.10 IN/SEC
0.4
0.3
0.05 IN/SEC
0.2
0.1
*Frequency corresponds to RPM when dynamic imbalance is the cause of vibration.
Guidelines for Interpreting the Classifications on the Severity Chart
Smooth: Alignment, balance and the integrity of the support
structure must be near perfect and the vibration from sources
other than the fan equipment must be low.
Slightly Rough: Requires service. Continued use in this
condition will reduce equipment life. Monitor equipment for
deterioration.
Good: Requires reasonable care on installation, proper
foundation, good balance on the rotating components and
good alignment of the running gear.
Rough: Requires service. Dangerous operating conditions
for fan equipment. Shut equipment down.
Fair: Fan equipment can operate in this region, but
imperfections are indicated.
6
PENNBARRY
Shut Down: Do not operate fan equipment. Potential for
catastrophic failure.
1401 North Plano Road, Richardson, Texas 75081
Phone: 972.234.3202 ■ Fax: 972.497.0468
Operation and Maintenance Manual
Axial Fan
Troubleshooting Checklist
In the event trouble is experienced in the field, listed below are the most common fan difficulties.
Symptom
Capacity or Pressure
Below Rating
Vibration and Noise
Possible Cause(s)
1. System problems
2. Speed too low
2. Adjust drive
3. Dampers or variable inlet vanes improperly adjusted.
3. Adjust
4. Poor fan inlet or outlet conditions
4. Elbows at or too close to fan
5. Air leaks in system
5. Seal joints / correct damper settings
6. Damaged impeller or incorrect direction of rotation
6. Correct
1. Misalignment of impeller, bearings, couplings
1. Loosen, align, tighten
2. Unstable foundation
2. Inferior design, start over
3. Foreign material in fan causing unbalance
3. Remove
4. Worn bearings
4. Replace bearings and shaft
5. Damaged impeller or motor
5. Check and repair
6. Broken or loose bolts or set screws
6. Replace
7. Bent shaft
7. Replace
8. Worn coupling
8. Replace
9. Impeller or driver unbalanced
10. 60/120 Hz magnetic hum due to electrical input
Overheated Bearings
Overloaded Motor
(Draws too many AMPs)
Motor Problems
Corrective Action
1. Total resistance of system higher than anticipated
9. Balance
10. Check for high or unbalanced voltage
11. Fan delivering more than rated capacity
11. Reduce speed
12. Loose dampers or VIVs
12. Adjust and tighten
13. Speed too high or fan rotating in wrong direction
13. Correct
14. Vibration transmitted to fan from some other source
14. Isolate
1. Too much grease in ball bearings
1. Allow run time to purge (24 hours)
2. Poor alignment
2. Correct
3. Damaged impeller or drive
3. Inspect, correct or replace
4. Bent shaft
4. Replace
5. Abnormal end thrust
5. Loosen set screws and adjust
6. Dirt in bearings
6. Replace bearing; use filtered grease
7. Excessive belt tension
7. Adjust
1. Speed too high
2. Discharge over capacity due to existing system
resistance being lower than original rating
3. Specific gravity or density of gas above design value
1. Reduce speed or change HP
2. Adjust system resistance
4. Wrong direction of rotation
4. Correct
5. Poor alignment
5. Correct
6. Impeller wedging or binding on inlet bell
6. Loosen and adjust
7. Bearings improperly lubricated
7. See page 4
8. Motor improperly wired
8. Verify and correct
1. Check for low or high voltage from power source
2. High temperature; drawing too much current or
dirt in windings
3. Vibration and noise
1. Correct voltage
2. Repair motor
4. Armature rubs against stator
4. Replace worn bearings
5. Too much or not enough lubrication in bearings
6. Commutator brushes on d-c motor worn or not
seated under proper tension
7. Vibration and noise; loose hold down bolts
8. Low insulation resistance due to moisture
5. Correct lubrication
6. Repair motor
3. Recalculate and correct
3. Correct armature imbalance
7. Tighten hold down bolts
8. Check resistance with a megohm meter ("Megger") or
similar instrument employing a 500 volt d-c potential.
Resistance should read at least 1 megohm
Note: Care should be taken to follow all local electrical, safety and building codes. Provisions of the National Electric Code (NEC), as well as the Occupational Safety
and Health Act (OSHA) should be followed.
All motors are checked prior to shipment. If motor defects should develop, prompt service can be obtained from the nearest authorized service station of the
motor manufacturer while under warranty. Exchange, repair or replacement will be provided on a no charge basis, if the motor is defective within the warranty
period. The PennBarry representative in your area will provide a name and address of an authorized service station, if requested.
WARNING: Motor guarantee is void unless overload protection is provided in motor wiring circuit.
1401 North Plano Road, Richardson, Texas 75081
Phone: 972.234.3202 ■ Fax: 972.497.0468
PENNBARRY
7
Operation and Maintenance Manual
Axial Fan
Limited Warranty
What Products Are Covered
PennBarry Commercial and Industrial Fans (each, a “PennBarry Product”)
One Year Limited Warranty For PennBarry Products
PennBarry warrants to the original commercial purchaser that the PennBarry Products will be free from defects in material and
workmanship for a period of one (1) year from the date of shipment.
Exclusive Remedy
PennBarry will, at its option, repair or replace (without removal or installation) the affected components of any defective PennBarry
Product; repair or replace (without removal or installation) the entire defective PennBarry Product; or refund the invoiced price
of the PennBarry Product. In all cases, a reasonable time period must be allowed for warranty repairs to be completed.
What You Must Do
In order to make a claim under these warranties:
1. You must be the original commercial purchaser of the PennBarry Product.
2. You must promptly notify us within the warranty period of any defect and provide us with any substantiation that we may
reasonably request.
3. The PennBarry Product must have been installed and maintained in accordance with good industry practice and any specific
PennBarry recommendations.
Exclusions
These warranties do not cover defects caused by:
1. Improper design or operation of the system into which the PennBarry Product is incorporated.
2. Improper installation.
3. Accident, abuse or misuse.
4. Unreasonable use (including any use for non-commercial purposes, failure to provide reasonable and necessary maintenance
as specified by PennBarry, misapplication and operation in excess of stated performance characteristics).
5. Components not manufactured by PennBarry.
Limitations
1.
2.
3.
In all cases, PennBarry reserves the right to fully satisfy its obligations under the Limited Warranties by refunding the
invoiced price of the defective PennBarry Product (or, if the PennBarry Product has been discontinued, of the most nearly
comparable current product).
PennBarry reserves the right to furnish a substitute or replacement component or product in the event a PennBarry Product
or any component of the product is discontinued or otherwise unavailable.
PennBarry’s only obligation with respect to components not manufactured by PennBarry shall be to pass through the
warranty made by the manufacturer of the defective component.
General
The foregoing warranties are exclusive and in lieu of all other warranties except that of title, whether written, oral or
implied, in fact or in law (including any warranty of merchantability or fitness for a particular purpose).
PennBarry hereby disclaims any liability for special, punitive, indirect, incidental or consequential damages, including
without limitation lost profits or revenues, loss of use of equipment, cost of capital, cost of substitute products,
facilities or services, downtime, shutdown or slowdown costs.
The remedies of the original commercial purchaser set forth herein are exclusive and the liability of PennBarry with respect
to the PennBarry Products, whether in contract, tort, warranty, strict liability or other legal theory shall not exceed the invoiced
price charged by PennBarry to its customer for the affected PennBarry Product at the time the claim is made.
Inquiries regarding these warranties should be sent to: PennBarry, 1401 North Plano Road, Richardson, TX 75081.
8
PENNBARRY
1401 North Plano Road, Richardson, Texas 75081
Phone: 972.234.3202 ■ Fax: 972.497.0468
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