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.
Domex, Centrifugal Roof, Direct & Belt Drive Exhausters
Description
PennBarry roof-mounted ventilators are belt-driven centrifugal exhausters designed to
meet air delivery requirements where steady exhaust is needed under moderate static
pressure. Housings are of spun aluminum construction with built-in bird screen. Ventilators are furnished with self-aligning, pre-lubricated, ball bearing pillow blocks, spark
proof aluminum wheels, and aluminum backdraft damper.
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 dur-ing 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 nishes. 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 like-ly to
have a reduced operating life.
Unpacking
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 aps. Remove any
cardboard and wooden ller pieces, as
well as loose components or accessories
shipped with the unit.
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.
Installation
!
NOTE
Zones, unit must be installed per
instructions on page 4.
INSTALLING MOTORS
In some instances, large frame motors
may be shipped loose and require eld
mounting. If so, carefully review motor
mounting installation procedures per Figure 1, Figure 2 and Figure 3.
INSTALLING THE DAMPERS:
ROOF MOUNTING
When required, install dampers prior to
mounting the unit on the curb or frame.
Secure dampers to the inside of the roof
opening (preferred) or 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: ROOF MOUNTING Power is nor-
mally brought from within the building
through proper conduit lines and placed
inside one corner of the curb. Feed power
line through the clearance hole provided
in the damper, if furnished, and in turn
through the ventilator to the discon-nect
switch, if furnished, and motor.
For Installation in high
velocity Hurricane
Figure 1: Motor Installation Procedures
1401 North Plano Road, Richardson, Texas 75081
Phone: 972-234-3202 | Fax: 972-497-0441
Figure 2: Motor Installation Procedures Figure 3: Motor Installation Procedures
Type 2 Type 3 Type 1
PENNBARRY 1
Page 2
Operation & Maintenance Manual Domex, Centrifugal Roof, Direct & Belt Drive Exhausters
When power lines are brought up to the
unit, provide a generous amount of slack
to allow for motor adjustments and to permit movement of motor for belt tension adjustments. Ground motor adequately and
securely. Protect power lines from sharp
objects. Do not kink power line or permit it
to contact hot surfaces, chemi-cals, grease
or oil. Use only UL recog-nized electrical
parts, rated for proper voltage, load and
environment. Check motor name plate.
ANCHORING AND SECURING THE
VENTILATOR: ROOF MOUNTING
Whenever possible, anchor the fan by fastening through the vertical portion of the
mounting ange. The type, size and number of fasteners depends upon the unit size
and curb construction. If code or specication prescribes fastening through the top
(vertical portion) of the mounting ange,
use neoprene or lead washers under the
head of each fastener.
Guy down large units installed in areas
subject to high winds or unusual eld con-
ditions. If the installer removes any ventilator parts to facilitate installation or electrical connections, reassemble all parts by
replacing all spacers, washers, nuts, bolts,
fasteners and components exactly as they
were found prior to removal. Draw all fasteners tight and secure. Fasteners should
be protected against corrosion.
MOTOR INSTALLATION PROCEDURES
1. Install motor pulley assembly (bracket if
provided - type 3) with hardware provided through holes in motor mounting plate/frame. Keep driven pulley
and drive pulley in line. (Do not tighten
hardware).
2. Install belt over drive and driven pulleys, pull up on motor mounting plate/
bracket until belt is tight. Tighten motor
plate hardware.
3. Wire motor or plug harness connec-tor
(from motor if equipped) into terminal
socket at end of junction box. Unit is
now ready to test to check for smooth
operation.
4. See belt adjustment label, and Fig.
4, for more details.
5. Check for proper wheel rotation.
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 centrifugal wheel
by hand to insure free movement.
Before placing hand
on centrifugal wheel
or belts, lock out power source.) Check all
set-screws and keys. Tighten when necessary.
Check condition of belts and the amount
of tension prior to start-up. DO NOT overtighten, as bearing damage will occur.
Recommended belt tension should per-
mit deection of 1/64” per inch of span.
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 groove
pulleys, adjust all belts with equal tension.
Belts must be adjusted after approximately 40 hours of operation.
Figure 4: Pulley Alignment & Tension
WRONG WRONG CORRECT
Not to exceed 1/64” per inch of span
Whenever belts
are removed or
installed, never force belts over pulleys
without loosening motor rst to relieve
belt tension.
Make sure inlets and approaches to the
unit are free from obstruction. To assure
maximum air movement, make sure adequate supply air is available to ventilated
space.
Before putting fan into operation, complete the following check list:
a. Turn off and LOCK OUT the power
source.
b. Make sure installation is in
accordance with manufacturer’s instructions.
c. Check and tighten all fasteners.
d. Spin centrifugal wheel to see
if rotation is free.
e. Check all set-screws and keys:
tighten if necessary.
f. Torqued set screws have a colored
Torque Seal mark indicating the correct torque has been applied.
g. Check belt or direct drive coupling
for alignment (use recommended
belt tension gauges).
h. Check belt for proper
sheave selection.
i. Make sure there is no foreign or
loose material in ductwork leading to
and from fan or in the fan itself.
j. Properly secure all safety guards.
k. Secure all access doors to fan
and ductwork.
l. Check line voltage with
motor nameplate.
m. Check wiring.
(On single phase mo-
tors, the terminal
block must be set up in accordance with
the nameplate instructions and/or wiring
diagram. This set up must match the line
voltage. If the motor is multi-speed or
multi-voltage, the winding leads must be
grouped and connected as shown on the
motor wiring diagram. The line voltage
must correspond with proper grouping
of motor leads. The wiring diagram must
be followed explicitly or serious motor or
starter damage will occur.) Don’t operate
at RPM higher than catalog.
The ventilator has been checked at the factory prior to shipment for mechanical noises.
If mechanical noises should develop:
a. Check rotating components
for adequate clearance (wheel align-ment pr
cedures are on page 7) and direction of rotation. CCW looking from drive side.
b. Check proper belt tension and pulley
alignment.
c. Check installation and anchoring.
d. Check fan bearings.
Switch on electrical supply and allow fan to
reach full speed.
Check carefully for Correct rotation of the
centrifugal wheel.
Incorrect rotation
overloads motor
severely and results in serious motor damage. To change rotation of three phase
units, interchange any 2 of the 3 line leads.
On single phase units, change the terminal
block set-up following the wiring diagram on
the motor.
1401 North Plano Road, Richardson, Texas 75081
Phone: 972-234-3202 | Fax: 972-497-0441
PENNBARRY 2
Page 3
Domex, Centrifugal Roof, Direct & Belt Drive Exhausters
Operation & Maintenance Manual
2. Check motor and bearing
temperatures for excessive heat.
Use care when touch-ing
the exterior of an operating motor. Modern motors normally run
hot. They are designed to operate at higher
temperatures. This is a normal con-dition
but they may be hot enough to be painful or
injurious to the touch.
If any problem is indicated, TURN OFF
POWER TO UNIT IMMEDIATELY. Lock
out the electrical supply, check carefully
for the cause of the trouble and correct
as needed. Even if the fan appears to be
operating satisfactorily, shut down after a
brief period and check all fasteners, setscrews and keys for tightness.
During the rst eight (8) hours of opera-
tion, check the fan periodically for excessive vibration or noise. At this time, also
check motor input current and motor bearing temperatures to insure that they do not
exceed manufacturer’s recommenda-tions.
After eight hours of satisfactory operation,
shut down the fan and lock out the electrical power to check the following items and
adjust if necessary:
a. All set-screws, keys and fasteners.
b. Drive coupling alignment.
c. Belt alignment.
d. Belt tension.
Maintenance
Do not attempt maintenance on fan until
the electrical supply has been completely
disconnected. If a disconnect switch has
not been provided, remove all fuses from
the circuit and lock the fuse panel so they
cannot accidentally be replaced.
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 impeller, inlet
and other moving parts.
FAN SHAFT LUBRICATION
Fan shaft bearing pillow blocks are furnished in either the prelubricated sealedfor-life type or the greasable type depending on what was ordered. The prelubricat-ed
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 lubri-cating
schedule recommended by the fac-tory.
When required, apply grease while the
shaft is rotating. This practice should not
supersede any safety considerations.
Use low pressure grease
guns tend to blow out or unseat bearing
seals, leaving the bearing open to collect
grime, dust and foreign particles.
guns only. High pressure
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 atmospheres or 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 at least once or twice a
month.
Table 1: Recommended Lubricants
ManufacturerProductTemp. Range
BPLG-#P-1
GulfGulfcrown EP-1
Imperial OilUnirex EP-1
ShellAlvania R-1
BP
Gulf Gulfcrown EP-2
Imperial OilUnirex EP-2
ShellAlvania R-3
Sun OilSun Prestige 42
TexacoRegal AFB2
Energrease,
MPMK11
Below 32° F
(0° C)
32° F to 150° F
(0° C to 66° C)
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 ttings
are provided, remove them when perform-
ing maintenance to allow grease to ow
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.
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.
When starting the fan for the rst time, completely inspect the ductwork and inte-rior
of the fan (with power locked off), to make
certain there is no foreign material which
can be sucked into or blown through the
ductwork.
Guards
All fans have moving parts which require
guarding in the same way as other moving
machinery.
Where the fan is accessible to untrained personnel or the general public, use maximum
safety guards, even at the cost of some
performance loss. Unprotected fans located
less than 7’ above the oor also require
guarding as specied in the Occupational
Safety and Health Act (OSHA).
PennBarry recommends the use of guards
on all exposed nonducted fans, ceiling and
wall mounted.
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.
1401 North Plano Road, Richardson, Texas 75081
Phone: 972-234-3202 | Fax: 972-497-0441
PENNBARRY 3
Page 4
Operation & Maintenance Manual Domex, Centrifugal Roof, Direct & Belt Drive Exhausters
Typical Concrete Slab Roof Installation
Typical Steel Framed Roof Installation
Typical Wood Framed Roof Installation
Installation Notes: All four sides of curb and base are anchored identically.
Curb Notes: 18 gauge galvanized steel minimum, maximum height 18”
1401 North Plano Road, Richardson, Texas 75081
Phone: 972-234-3202 | Fax: 972-497-0441
PENNBARRY 4
Page 5
Operation & Maintenance Manual
Domex, Centrifugal Roof, Direct & Belt Drive Exhausters
Troubleshooting Checklist
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.
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.
SymptomPossible Cause(s)Corrective Action
Excessive noise
1. Defective or loose motor bearings1. Replace motor with same frame size, RPM, HP
2. Ventilator base not securely anchored2. Reset properly
Domex, Centrifugal Roof, Direct & Belt Drive Exhausters
Wheel Alignment Procedures
Figure 10
Operation & Maintenance Manual
The wheel position is preset at factory and must rotate freely.
However, movement may occur due to rough handling prior to
installation and realignment may be necessary. If eld correction is
required follow these procedures:
1. If “Front to Back” adjustment is required, loosen both motor
frame support angles (four nuts), relocate frame and retighten.
2. If “Side to Side” adjustment is required, loosen both bearings
(four nuts), relocate and retighten.
3. If “Vertical” adjustment is required, loosen both set screws on the
wheel hub (accessible from the bottom side of the unit), raise or
lower the wheel and retighten.
1401 North Plano Road, Richardson, Texas 75081
Phone: 972-234-3202 | Fax: 972-497-0441
PENNBARRY 8
Page 9
Operation & Maintenance Manual
Domex, Centrifugal Roof, Direct & Belt Drive Exhausters
Direct Drive - Explosion Proof Motor
Spun Aluminum Centrifugal Roof Exhauster
PUNCH OR DRILL HOLE FOR CONDUIT
PATH. HOLE MUST BE SEALED OR
CAULKED TO PREVENT WATER ENTRY.
RIGID CONDUIT OR I.M.C. (INTERMEDIATE
METAL CONDUIT) PER N.E.C. AND/OR
LOCAL CODES. (BY OTHERS)
1. Motor Dome
2. Motor Hood Top (For Exp. Motor)
3. Top Plate
4. Discharge Apron
5. Structural Support Braces
N.E.C. SPECIFIES A SEAL WITHIN 18”.
*NOTE- ALL WIRING MUST BE PROVIDED BY A
LICENSED ELECTRICIAN FAMILIAR WITH
EXPLOSION PROOF WIRING PRACTICES AND
REGULATIONS, USING COMPONENTS
APPROPRIATE TO THE SPECIFIC INSTALLATION
AND N.E.C. AND/OR LOCAL CODES.
Legend
6. Motor Mounting Plate
7. Motor (Exp. Motor)
8. Centrifugal Fan Wheel with Cooling
Vanes
9. Spun Venturi
CLOSE NIPPLE AND UNION DIRECTLY
OUT OF MOTOR.
10. Mounting Base
11. Conduit Guide (Not for Exp. Motor)
12. Aluminum Bird Screen
Dimensional Data
DX08Q DX10Q DX11Q DX13Q DX16Q
DIA.
L
H
† Outside dimension of curb should be 1 1/2” less than ‘E’ dimension
EXP. MOTOR
Material: Spun Aluminum Housing
This drawing illustrates our understanding of order requirements. When approved, it represents details for fabrication, as such, PennBarry will not be responsible for revisions in the eld or other
changes after release for fabrication. Published and protected by PennBarry, Richardson, TX. All rights reserved. May not be reproduced partially or in full without permission from the publisher.
No rights conveyed to manufacture partially or in full, use or sell either the method of construction represented or any invention in any way related thereto.
1401 North Plano Road, Richardson, Texas 75081
Phone: 972-234-3202 | Fax: 972-497-0441
20 7/8 20 7/8 20 7/8 21 7/16 28 1/2
18 19 19 19 26 11/16
All dimensions in inches.
PENNBARRY 9
Page 10
Domex, Centrifugal Roof, Direct & Belt Drive Exhausters
Wiring Harness - Disconnect Device
O.D.P. Motors (ITW Harness) 115/220 Single Phase
Operation & Maintenance Manual
O.D.P. MOTOR
JUNCTION BOX
COVER
POWER LEADS
8” LONG
JUNCTION BOX
4 TERMINAL
SOCKET
JUNCTION
BOX
JUNCTION
BOX
COVER
4 TERMINAL
WIRING HARNESS
WITH CONNECTOR
(FROM MOTOR)
FAN SHAFT
CONDUIT
GUIDE
WIRING HARNESS WITH CONNECTOR
ELECTRICAL CONNECTIONS
Connect motor per nameplate to correct power supply. Install
SOCKET
all wiring, protection and grounding in accordance with National
Electrical Code and local requirements. Follow all local electrical
and safety codes, as well as the National Electrical Code (NEC)
and the Occupational Safety and Health Act (OSHA).
WIRING INSTRUCTIONS
CAUTION: When bringing power lines up, power MUST be off.
1. Bring power lines up to motor compartment thru conduit guide.
2. Remove junction box cover so that power leads are exposed.
3. Remove one knock-out, attach connector and run power lines
from source into junction box.
4. Terminal socket has two 8” long pigtails already stripped. Make
connection to power lines using proper size wire nuts and fold
wires back into box.
5. Replace junction box cover and secure in place with screw.
6. Plug harness connector (from motor) into terminal socket at end
of junction box. Unit is now ready to test.
MOTOR SUPPORT
PLATE
TOP PLATE
BEARINGS
This drawing illustrates our understanding of order requirements. When approved, it represents details for fabrication, as such, PennBarry will not be responsible for revisions in the eld or other
changes after release for fabrication. Published and protected by PennBarry, Richardson, TX. All rights reserved. May not be reproduced partially or in full without permission from the publisher.
No rights conveyed to manufacture partially or in full, use or sell either the method of construction represented or any invention in any way related thereto.
1401 North Plano Road, Richardson, Texas 75081
Phone: 972-234-3202 | Fax: 972-497-0441
PENNBARRY 10
Page 11
Operation & Maintenance Manual
Domex, Centrifugal Roof, Direct & Belt Drive Exhausters
Limited One Year 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 specic 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 specied 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 im-
plied, in fact or in law (including any warranty of merchantability or tness for a particular purpose).
PennBarry hereby disclaims any liability for special, punitive, indirect, incidental or consequential damages, including
without limitation lost prots 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: 972-497-0441
PENNBARRY 11
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