PennBarry LC Dynafan Centrifugal Roof Exhauster Operation & Maintenance Manual

Operation & 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.
LC Dynafan Centrifugal Roof Exhauster
Unpacking
ANCHORING OR SECURING THE UNIT
Place the carton in an upright position and
remove the staples or use a sharp (knife
edge) tool to carefully cut or scribe the
sealing tape on both sides at the top of
the carton. Open carton flaps. Remove
any cardboard and wooden filler pieces,
as well as loose components or accessories shipped with the unit.
Whenever possible, anchor the fan by
fastening through the vertical portion of
the mounting flange. The type of fastener
depends upon curb construction and
using two fasteners per side constitutes
adequate anchoring under normal conditions. If code or specification prescribes
fastening through the top (horizontal portion) of the mounting flange, use neoprene or lead washers under the head of
each fastener to prevent water leaks.
Carefully remove the unit from the carton.
Inspect the unit for any damage that may
have occurred during transit and check
for loose, missing or damaged parts.
Receiving and Handling
PennBarry fans are carefully inspected
before leaving the factory. When the unit
is received, inspect the carton 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.
Storage
Long-term storage requires special attention. Store units on a level, solid surface,
preferably indoors. If outside storage is
necessary, protect the units against moisture and dirt by encasing the cartons in
plastic or in some similar weatherproof
material. Periodically inspect units and
rotate wheels to spread bearing lubricant.
Failure to rotate wheels results in reduced
bearing life and may void the manufacturer’s warranty. If the unit will be stored for
an extended time, remove belts. Belts
which remain under tension in a stationary position for extended periods are likely to have a reduced operating life.
1401 North Plano Road, Richardson, Texas 75081
Phone: 972-234-3202
Fax: 972-497-0468
Installation
INSTALLING THE DAMPERS
When required, install dampers prior to
mounting the unit on the curb or frame.
Secure dampers to the inside of the curb
without undue twisting, which may distort
the damper frame. Damper frame must
be reasonably level on all sides. Check
for free operation. If dampers are motor
operated type, ascertain that proper voltage is impressed on motor terminals.
POSITIONING AND RUNNING
POWER LINES
Power is normally brought from within the
building and placed inside one corner of
the curb. Feed power line through the
clearance hole provided in the damper
and in turn through the electrical conduit
hole provided in the base of the exhauster
(fed through rubber grommets on smaller
units). If local codes require special electrical wire of unusually large size, then
remove and discard the electrical conduit
(or grommets) making sure to protect the
wires from sharp edges.
INSTALLING THE FAN
For access to motor and drive assembly,
simply remove or lift access hood and
make necessary power connections to
motor (through disconnect switch if
required). Provide a generous amount of
slack in power line between motor and
disconnect switch to allow for motor
deflections, and to permit movement or
motor for belt tension adjustments.
Guy down large
units installed in
areas subject to high winds or
unusual field conditions.
To complete the re-assembly of the unit
secure hood to frame by replacing all
spacers, washers and nuts exactly as
they were found prior to removal. The unit
is now ready for service. Apply power and
check rotation as indicated by arrow in
motor compartment. The rotation of all
centrifugal ventilators is counterclockwise
when viewing the unit from above the
motor compartment.
CHECK LIST
The fan has been checked at the factory
prior to shipment for mechanical noises. If
installed properly, it will provide quiet ventilation. If noises should develop, check
the suggestions below as a guide toward
remedying the cause.
•
Check rotating members
for adequate clearance.
•
Check proper belt tension
and pulley alignment.
•
Check installation and anchoring.
•
Check fan bearings.
If your unit is exhausting over a hood
which uses filters, clean the filters frequently. Dirty or clogged filters tend to
increase static resistance and cause a
reduction in air flow.
Printed in the USA Jan 2005
PART #59279
LC Dynafan Centrifugal Roof Exhauster
Operation & Maintenance Manual
Start-Up and Operation
Carefully inspect the unit before start-up.
All motor bearings should be properly
lubricated and all fasteners should
be securely tightened. Rotate blower
wheels by hand to insure free movement.
Make sure the inlets and approaches
to the exhauster are clean and free
from obstruction. To assure maximum
air movement, adequate supply air
must be available.
Rough shipping or handling may
cause the wheel or propeller to move
away from the venturi inlet. That condition
can cause the fan to move less air. If
that occurs, loosen set screws and adjust
the impeller closer to the inlet. Retighten
all hardware securely.
Check condition of belts and the amount
of tension prior to start-up. When it
becomes necessary to adjust belt tension,
do not overtighten as bearing damage will
occur. Recommended belt tension should
permit deflection of 1/64" per inch of span
of the belt on each side of the
belt measured halfway between the pulley
centerline. Exercise extreme care when
adjusting belts as not to misalign the pulleys. Any misalignment will cause
a sharp reduction in belt life and produce
squeaky, annoying noises. On units
equipped with two or three groove pulleys, adjust all belts with equal tension.
c. If the motor is three phase, group
and connect the winding leads as
shown on the wiring diagram. The
line voltage must correspond with
proper grouping of motor leads.
d. On two speed motors, follow the
wiring diagram explicitly or serious
motor damage will occur.
e. Activate the blower and
allow it to operate.
f.
Carefully check the rotation of
the wheel to insure operation in
the proper direction.
Incorrect rotation
overloads motor
severely and results in serious motor
damage. To change rotation of three phase
units simply interchange any two of the
three line leads. On single phase units
change the terminal block set-up following
the wiring diagram.
g. Check that bearing temperatures are
not excessively hot.
h. Check that all bolts and hangers are
secure after one (1) hour of continuous operation.
NOTE: Take care to follow all local electrical, safety
and building codes. Follow provisions of the National
Electrical Code as well as the Occupational Safety
and Health Act.
Always disconnect power source before
working on the unit.
Guard and protect all moving parts.
Figure 1: Pulley Alignment
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Whenever belts are
removed or installed,
never force belts over pulleys
without loosening motor first to relieve
belt tension.
Before applying power to the motor,
check the following:
a. Check line voltage with
motor nameplate.
b. On single phase motors, set-up the
terminal blocks in accordance with
the nameplate instructions (or wiring
diagram). The set up must match
the line voltage.
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PENNBARRY
All motors are checked prior to shipment.
However, if motor defects should develop,
prompt service can be obtained from
the nearest authorized service station
of the motor manufacturer under the
warranty. Exchange, repair or replacement will be provided on a no charge
basis if the motor is defective within the
warranty period. Motor guarantee is void
unless overload protection is provided in
motor wiring circuit.
Maintenance
Do not attempt maintenance on a fan until
the electrical supply has been completely
disconnected. Lubrication is a primary
maintenance responsibility. Check all
bearings periodically. Inspect belts for
tightness. If the fan is installed in a corrosive or dirty atmosphere, periodically
clean the centrifugal wheel, inlet, motor
housing and other moving parts.
FAN SHAFT LUBRICATION
Fan shaft bearing pillow blocks are furnished in either the pre-lubricated sealedfor-life type or the greasable type depending on what was ordered. The pre-lubricated type requires no servicing for 7 to
10 years of normal use and the greasable
type are factory greased eliminating the
need for greasing initially. Follow the lubricating schedule recommended by the factory. This practice should not supersede
any safety considerations.
Use low pressure
grease guns only. High
pressure guns tend to blow out or unseat
bearing seals, leaving the bearing open to
collect grime, dust and foreign particles.
LUBRICATION SCHEDULE
Always follow the bearing manufacturer’s
recommended lubrication schedule. If
none is available us the following
general schedule.
a. Under average conditions where
ambient temperatures do not exceed
120°F, lubrication is required 1 to 2
times a year.
b. Under dirt laden atmosphere where
there is a temperature range of
120°F to 150°F, lubrication is
required from 3 to 6 times a year.
c. Under extreme temperature conditions and extremely dirty atmospheres, lubrication should be scheduled at least once or twice a month.
d. Belt driven units maximum temperature should not exceed 160°F. Direct
driven models have temperature
range stamped on motor.
Table 1: Recommended Lubricants
Manufacturer
Product
BP
LG-#P-1
Gulf
Gulfcrown EP-1
Imperial Oil
Unirex EP-1
Shell
Alvania R-1
BP
Energrease,
MPMK11
Gulf
Gulfcrown EP-2
Imperial Oil
Unirex EP-2
Shell
Alvania R-3
Sun Oil
Sun Prestige 42
Texaco
Regal AFB2
Temp. Range
Below 32°F
(0°C)
32°F to 150°F
(0°C to 66°C)
1401 North Plano Road, Richardson, Texas 75081
Fax: 972-497-0468
Phone: 972-234-3202
LC Dynafan Centrifugal Roof Exhauster
MOTOR LUBRICATION
In general, standard motors are furnished
with prelubricated, sealed-for-life ball
bearings which require no lubrication for 7
to 10 years of normal service. Where
motors have been ordered with greasable
bearings, these bearings are factory lubricated and require no attention for one
year under normal conditions. If grease
relief fittings are provided, remove them
when performing maintenance to allow
grease to flow out. Whenever possible,
apply grease while the motor is running.
This practice should not supersede any
safety considerations. DO NOT OVER
GREASE, as most lubricants deteriorate
motor windings, thereby reducing motor
life and presenting a fire hazard.
Hidden Danger
In addition to the normal dangers of rotating machinery, fans present an additional
hazard in their ability to suck in not only
air, but loose material as well. Solid
objects can pass through the fan and be
discharged by the impeller as potentially
dangerous projectiles. Therefore, screen
intake to ductwork, whenever possible, to
prevent the accidental entrance of solid
objects. Never open access doors to a
duct system with the fan running.
Operation & Maintenance Manual
When starting the fan for the first time,
completely inspect the ductwork and interior of the fan (with the power locked off),
to make certain there is no foreign material which can be sucked into or blown
through the ductwork.
Where the fan is accessible to untrained
personnel or the general public, use maximum safety guards, even at the cost of
some performance loss.
Special Purpose Systems
Explosive, corrosive, high temperatures,
etc. may require special construction,
inspection and maintenance. It is
necessary to observe the fan manufacturer’s recommendations and limitations
concerning the type of material to be
handled by the fan and its application
to special conditions.
Parts Replacements
Unprotected fans
located less than
7' above the floor also require guarding
as specified in the Occupational
Safety and Health Act (OSHA).
If replacing parts, do so with properly
selected components which duplicate the
original parts correctly. Incorrectly sized
shafts, belts, pulleys, centrifugal wheels,
etc. can damage the fan.
Centrifugal fans may be connected directly to ductwork which will prevent contact
with the internal moving parts, but when
the inlet or outlet is exposed, install a suitable guard. PennBarry recommends the
use of guards on all exposed non-ducted
fans, ceiling and wall mounted.
PARTS LIST
1. Access Hood
2. Electrical Fan Motor
3. Centrifugal Fan Wheel
4. Anti-Vibration Mounts
5. Spun Inlet Venturi
6. Motor Support Plate
7. Conduit Hole
8. Fan Shaft and Bearings
(Belt Drive only)
9. Belt and Pulley
Figure 2: Field Built Curbs
1401 North Plano Road, Richardson, Texas 75081
Phone: 972-234-3202
Fax: 972-497-0468
PENNBARRY
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LC Dynafan Centrifugal Roof Exhauster
Operation & Maintenance Manual
Troubleshooting Checklist
Symptom
Excessive noise
Fan inoperative
Insufficient airflow
Possible Cause(s)
1. Defective or loose motor bearings
2. Ventilator base not securely anchored
3. Loose or unbalanced wheel/propeller
3. Tighten screws, remove build-up,
balance wheel/propeller
4. Misaligned pulleys or shaft
5. Loose or damaged wheel/propeller
6. Wheel running in wrong direction
4. correct alignment
4. Replace wheel/propeller
6. Reverse direction
1. Blown fuse or open circuit breaker
1. Replace fuses or circuit breaker
2. Loose or disconnected wiring
2. Shut off power and check wiring
for proper connections
3. Defective motor
4. Broken belts
3. Repair or replace motor
4. Replace belts
1.
2.
3.
4.
1.
2.
3.
4.
Open access doors or loose sections of ducts
Clogged filters
Operation in wrong direction
Insufficient make-up air direction
1. Fan installed with slope in the wrong direction
Water leaking
into ductwork or
collection of grease
under fan
Motor overheating
Corrective Action
1. Replace motor with same frame size, RPM, HP
2. Reset properly
2. Clogged drain spout
Check for leakage
Clean filters
Correct rotation of wheel/propeller
Add make-up fan or louver opening
1. Slope should be fitted in the direction of the
drainage opening or grease collection box and
drain spout
2. Clean drain spout
3. Cooling tube or motor dome top removed
3. Install new cooling tube
with gasket and dome top
4. Grease container full
4. Empty grease box
1. Belt slippage
2. Overvoltage or under voltage
3. Operation in wrong direction
1. Adjust tension or replace bad belts
2. Contact power supply company
3. Reverse direction of motor
4. Fan speed too high
4. Slow down fan by opening variable pitch
pulley on motor shaft
6. Blocked cooling tube or leaky gasket
5. Replace motor with correct open,
NEMA service factors (1.15 or higher)
with 40 degrees ambient
6. Remove blockage and seal cooling tube in place
7. Insufficient airflow to kitchen hood fan operating
on low speed with kitchen in full operation
7. Check airflow under hood and adjust
kitchen equipment output
8. Undersized motor
8. Check motor ratings with catalog speed
and air capacity chart
5. Incorrect motor (service factor 1.0,
low ambient temperature)
Note: Care should be taken to follow all local electrical, safety and building codes. Provisions of the National Electric Code (NEC), as wells as the Occupational Safety
and Health Act (OSHA) should be followed.
4
PENNBARRY
1401 North Plano Road, Richardson, Texas 75081
Fax: 972-497-0468
Phone: 972-234-3202
LC Dynafan Centrifugal Roof Exhauster
Operation & Maintenance Manual
Limited Warranty
What Products Are Covered
PennBarry Fans and Ventilators (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 invoice 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. In all cases, PennBarry reserves the right to fully satisfy its obligations under the Limited Warranties by
refunding the invoice price of the defective PennBarry Product (or, if the PennBarry Product has been discontinued,
of the most nearly comparable current product).
2. 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.
3. 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 invoice 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.
1401 North Plano Road, Richardson, Texas 75081
Phone: 972-234-3202
Fax: 972-497-0468
PENNBARRY
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