PennBarry RAU User manual

RAU / RAUMO
Roof Axial Upblast Ventilator
OPERATION AND MAINTENANCE MANUAL
The information contained herein is, to the best of our knowledge, accurate and
applicable for proper operation and installation of the specied equipment at
the time this document entered service. Before proceeding, it is recommended
that you check for a more current version of this Installation Operation Manual
(IOM) on our website at www.pennbarry.com.
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.
IMPORTANT! Read before proceeding!

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TABLE OF CONTENTS
INTRODUCTION AND INSTALLATION 3-4
START-UP AND OPERATION 5
MAINTENANCE, HIDDEN DANGER, AND SPECIAL PURPOSE SYSTEMS 6-7
PARTS REPLACEMENT AND TROUBLESHOOTING CHECKLIST 8

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INTRODUCTION AND INSTALLATION
These PennBarry Roof Upblast Ventilators are built for general exhaust applications in industrial and commercial buildings such as
assembly areas and warehouses.
Receiving And Handling
PennBarry fans are carefully inspected before leaving the factory. When the unit is received, inspect 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. 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 special nishes.
Storage
Long-term storage requires special attention. Units should be stored on a level, solid surface, preferably indoors. If outside storage
is necessary, protect the units against moisture and dirt by encasing in plastic or some similar weatherproof material. Periodically
inspect units and rotate wheel to spread bearing lubricant. If unit will be stored for extended time, remove belts.
Installation
1. Cut an opening in the roof and install roof curb (by others). The curb should be at least 6” high. For installation over existing
curb, use wood nailers over the mounting curb to achieve the desired dimensions.
2. If unit is supplied without the motor, belt(s), and pulleys, while ventilator is on its side, mount motor and install the sheaves and
belt(s). See Figure 1. Connect power cable to motor as indicated on motor name plate or terminal box cover. Allow sucient
slack in power cables for belt tension adjustment.
3. Place ventilator on curb, aligning electrical conduit from power source and connect the motor per nameplate instructions.
Normally, the power cable is brought up from within the building and placed inside one corner of the curb.
4. Secure ventilator to curb through vertical portion of ventilator base through all holes provided. Local codes or good practice
may require that unit be additionally guy wired.
These ventilators are not rainproof and not recommended for use over areas that may be damaged by water.
If fastening through top surface of the ventilator base, use a lead or neoprene washer under the head of each
fastener to prevent water leakage.
Do not use in explosive atmospheres. This is not an explosion proof ventilator and does not have spark resistant
construction.
CAUTION
CAUTION
CAUTION
WRONG WRONG CORRECT
Not to exceed 1/64”per inch of span
Figure 1: Pulley Alignment

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INTRODUCTION AND INSTALLATION
5. Protective guards are recommended for installation below drive support assembly to prevent entry of foreign items or falling
parts
6. Check ventilator impeller for free rotation.
7. Check all fasteners for tightness.
Electrical Connection
1. Follow all local electrical and safety codes, the National Electrical Code (NEC), the Occupational Safety and Health Act (OSHA),
and the National Fire Protection Association (NFPA) Bulletin 70.
2. Have all electrical work performed by a qualied electrician. Wire the ventilator with proper number of conductors plus ground
lead.
3. Make certain that the power source conforms to the requirements of the equipment.
4. Use only properly sized wire according to the NEC.
5. Protect the power cable from coming in contact with sharp objects.
6. Do not kink the power cable. Never allow the cable to come in contact with oil, grease, hot surfaces or chemicals.
7. Properly ground the ventilator by using a grounded metal-clad raceway system or a separate ground wire connected to the
bare metal of the ventilator.
8. Check for free rotation of the ventilator impeller.
Disconnect the power before servicing or installing.
Do not use this equipment in explosive atmospheres!
Never connect the green, or green and yellow, conductor to a live terminal.
For safety, a lockable disconnect switch, UL rated for HP and voltage, should be located near the fan so power can
be positively disconnected while servicing the unit.
CAUTION
CAUTION
CAUTION
CAUTION
Fan frame and motor must be electrically grounded to a suitable electrical ground such as a grounded water pipe,
or properly grounded metallic raceway to ground wire system.
CAUTION

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START-UP AND OPERATION
Start-Up And Operation
1. Prevent body contact with rotating components.
2. Apply power and check rotation. Rotation is clockwise when viewed from the top.
IMPORTANT: Incorrect rotation severely overloads motor and may result in serious ventilator and motor damage.
3. Do not touch an operating motor, they run hot! This condition is normal when operating at rated load and voltage.
4. With air systems in full operation, measure current input (AMPS) to motor and compare with nameplate rating to determine if
motor is operating under safe load conditions.
5. It is normal for new belts to stretch slightly soon after installation. Therefore, new belts must be retensioned after the rst 48
hours of operation.

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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.
CAUTION
MAINTENANCE, HIDDEN DANGER,
AND SPECIAL PURPOSE SYSTEMS
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 prelubricated sealed-for-life type or the greasable type depending on
what was ordered. The prelubricated 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.
Lubrication Schedule
1. Under average conditions where ambient temperatures do not exceed 120°F, lubrication is required 1 to 2 times a year.
2. 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.
3. Under extreme temperature conditions and extremely dirty atmospheres, lubrication should be scheduled at least once or
twice a month.
4. Belt drive units maximum temperature should not exceed 160°F. Direct driven models have temperature range stamped on
motor.
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 performing
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 and presenting a re hazard.
Table 1: Recommended Lubricants
Manufacturer Product Temperature Range
BP LG-#P-1
Below 32°F
(0°C)
Gulf Gulfcrown EP-1
Imperial Oil Unirex EP-1
Shell Alvania R-1
BP Energrease MPMK11
32°F to 150°F
(0°C to 66° C)
Gulf Gulfcrown EP-2
Imperial Oil Unirex EP-2
Shell Alvania R-3
Sun Oil Sun Prestige 42
Texaco Regal AFB2

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MAINTENANCE, HIDDEN DANGER,
AND SPECIAL PURPOSE SYSTEMS
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 interior of the fan (with the power locked o), 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.
Axial 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. YORK® by Johnson Controls recommends the use of guards on all exposed non-ducted
fans, ceiling and wall mounted.
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.
Unprotected fans located less than 7’ above the oor also require guarding as specied in the Occupational Safety
and Health Act (OSHA).
CAUTION

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Notes:
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.
PARTS REPLACEMENT AND
TROUBLESHOOTING CHECKLIST
Parts Replacement
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.
Troubleshooting Checklist
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.
Symptom Possible Cause(s) Corrective Action
Excessive Noise
1. Defective or loose motor bearings.
2. Ventilator base not securely anchored.
3. Loose or unbalanced wheel/propeller.
4. Misaligned pulleys or shaft.
5. Loose or damaged wheel/propeller.
6. Wheel running in wrong direction.
1. Replace motor with same frame size, RPM, HP.
2. Reset properly.
3. Tighten screws, remove build-up, balance wheel/propeller.
4. Correct alignment.
5. Replace wheel/propeller.
6. Reverse direction.
Fan Inoperative
1. Blown fuse or open circuit breaker.
2. Loose or disconnected wiring.
3. Defective motor.
4. Broken belts.
1. Replace fuses or circuit breaker.
2. Shut o power and check wiring for proper connections.
3. Repair or replace motor.
4. Replace belts.
Insucient Airow
1. Open access doors or loose sections of ducts.
2. Clogged lters.
3. Operation in wrong direction.
4. Insucient make-up air direction.
1. Check for leakage.
2. Clean or replace lters.
3. Correct rotation of wheel.
4. Add make-up fan or louver opening.
Motor Overheating
1. Belt slippage.
2. Overvoltage or under voltage.
3. Operation in wrong direction.
4. Fan speed too high.
5. Incorrect motor (service factor 1.0, low ambient
temperature).
6. Blocked cooling tube or leaky gasket.
7. Undersized motor.
1. Adjust tension or replace bad belts.
2. Contact power supply company.
3. Reverse direction of motor.
4. Slow down fan by opening variable pitch pulley on motor
shaft.
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. Check motor ratings with catalog speed and air capacity chart.

PennBarry is proud to be your preferred manufacturer of commercial and industrial fans and blowers. Learn how PennBarry can assist
you in your next application by contacting your PennBarry Representative or visiting us on the web at www.pennbarry.com.
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PennBarry reserves the right to make changes at any time, without notice, to models, construction, specications, options and
availability. This manual illustrates the appearance of PennBarry products at the time of publication.
View the latest updates on the PennBarry website.
© 2021 PennBarry. All Rights Reserved. Revised MAY 2021