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General Installation, Operation and Maintenance Instructions For Aerovent Products
General Installation, Operation and Maintenance Instructions For Aerovent Products
Centrifugal Powered Roof & Wall Exhausters
Aerovent Bulletin 102 provides additional information on this equipment. These bulletins can be found at www.aerovent.
com or by contacting your local Aerovent sales representative.
When the equipment is received all items should be
carefully checked against the bill of lading to be sure all
crates and cartons have been received. Before accept-
ing delivery, carefully inspect each carton or crate for
visible shipping damage. If any damage is noticed, the
carrier should make the proper notation on the delivery
receipt acknowledging the damage. Make notations of all
damage on all copies of the bill of lading and have all
copies countersigned by the delivering carrier. The car-
rier should also fill out a Carrier Inspection Report. The
factory Traffic Department should then be contacted.
File claim for damage with the carrier. Physical damage
to the unit after acceptance is not the responsibility of
Twin City Fan Companies, Ltd.
CAUTION: Sheet metal parts, screws, clips and similar
items inherently have sharp edges, and it is necessary
that the installer and service personnel exercise
caution.
The installation of this equipment shall be in accordance
with the regulations of authorities having jurisdiction and
all applicable codes.
Models ACX, ATB, ATBR, AWX, AWXR
Receiving, Inspection & Unpacking
General Installation
Unpack each carton or crate and verify that all required
parts and proper quantities of each item have been
received. Refer to drawings for part descriptions. Report
shortages or missing items to your local representative
to arrange for replacement parts.
Due to availability of carriers and truck space, it is not
possible to guarantee that all items will be shipped
together. Verification of shipments must be limited to
only those items on the bill of lading.
The unit nameplate must be checked to make sure the
voltage agrees with the power supply available.
This equipment is to be installed by an experienced
installation company and fully trained personnel.
The mechanical installation of the exhaust ventilator con-
sists of making final connections between the unit and
building services, duct connections.
©2006 Aerovent
IM-115
IM-121
November 2006
June 1997
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Table of Contents
Related Manuals for Aerovent ACX series
Summarization of Contents
Receiving, Inspection & Unpacking
Receiving and Inspection
Check all crates against bill of lading and inspect for shipping damage.
Unpacking and Part Verification
Unpack all items, verify required parts and quantities, report shortages.
Voltage Nameplate Check
Ensure unit nameplate voltage matches available power supply.
General Installation
Installer Safety Precautions
Exercise caution due to sharp edges on sheet metal parts, screws, and clips.
Installation Compliance
Install equipment according to authorities having jurisdiction and applicable codes.
Mechanical Connections
Make final connections between the unit and building services, and duct connections.
Dimensions and Weights
Model ACX Dimensions and Weights
Table detailing fan dimensions, canted curb size, damper size, and average ship weight for ACX models.
Models ATB/ATBR Dimensions and Weights
Table detailing fan dimensions, curb sizes, damper size, and average ship weight for ATB/ATBR models.
Models AWX/AWXR Dimensions and Weights
AWX/AWXR Dimensions and Weights
Table detailing fan dimensions, weights, and wall mounting details for AWX/AWXR models.
Mounting Bracket Hole Pattern
Diagram showing the mounting bracket hole pattern for AWX/AWXR models.
Electrical Connection
Supply Wiring Connection
Connect supply wiring to the disconnect switch, check wiring diagrams and line voltage.
Wire Sizing and Protection
Size wires for ampacity, consider voltage drop, protect wiring from sharp edges.
Grounding Requirements
Electrically ground all units according to local codes or NEC, use ground lug for grounding only.
Voltage and Phase Unbalance Limits
Supply voltage should not vary by more than 10%; phase unbalance must not exceed 2%.
Roof Fan Installation
Fan Positioning and Conduit Connection
Position fan with wiring conduit in line with roof curb/damper, run wires through conduit.
Securing to Roof Curb
Bolt the fan base to the roof curb using provided lag bolts.
Electrical Connections
Make connection to the disconnect switch per electrical instructions, comply with NFPA-96 for restaurant fans.
Wall Fan Installation
Mounting Bracket Installation
Bolt the wall mounting bracket to the wall using provided lag bolts.
Fan Positioning and Wiring
Position fan with breather tube down, run wires through conduit, leave slack.
Securing to Wall Bracket
Bolt the fan base to the wall bracket using hardware provided.
Electrical Connections
Make connection to the disconnect switch, comply with NFPA-96 for restaurant fans.
Check, Test & Start Procedure
Pre-Start Safety Checks
Disconnect power before servicing. Check wheel rotation, venturi gap, and supply voltage.
Rotation Verification
Apply power, check wheel rotation direction (CW/CCW) per arrow; wrong rotation causes overload.
Electrical Input Check
Check fan ampere draw against motor nameplate amps, consider service factor.
Fan RPM Verification
Check and verify fan RPM with a tachometer.
Speed Control Verification
For direct drive units, verify speed controller provides desired RPM range.
Vibration and Balancing
Fans are factory balanced; check for vibration causes like handling, foundations, alignment.
V-Belts
Belt Tension Adjustment
Adjust belt tension for 1/64" deflection per inch of span; avoid over-tensioning.
Belt Installation and Alignment
Loosen motor to install/remove belts. Ensure shafts are parallel and sheaves aligned.
Sheave and Belt Inspection
Check sheaves for damage and belts for glazing, cracks, or wear.
Variable Pitch Sheaves
Ensure two-groove variable pitch sheaves are opened equally to avoid slippage.
Fan Troubleshooting Chart
Fan Does Not Operate
Troubleshoot issues like wrong voltage, tripped overload, blown fuses, or broken belts.
Too Little Air
Diagnose causes such as wrong rotation, low fan speed, or restricted airflow.
Too Much Air
Identify reasons like high fan speed or less restrictive system than expected.
Excessive Horsepower
Check for wrong rotation, wheel rubbing, high fan speed, or worn bearings.
Excessive Noise
Troubleshoot loose parts, misalignment, worn bearings, or air system noise.
Excessive Vibration
Address issues like loose wheels, imbalance, dirt buildup, or alignment problems.
Maintenance
Preventive Maintenance Schedule
Tighten connections, check belts/sheaves, lubricate bearings, clean unit.
Motor Shaft Rotation Check
Spin motor shaft with power off to ensure smooth rotation and bearing function.
Belt Removal and Installation
Loosen motor mount to easily slip belts over sheaves; avoid forcing belts.
Belt Condition and Tension
Check belts for defects and tension for 1/4" deflection (3-5 lb).
Belt Alignment and Sheave Check
Ensure belts run perpendicular to parallel shafts and check sheaves for damage.
Sheave Setscrew Tightness
Check sheave setscrews for tightness and ensure proper keys are in keyways.
Bearing Lubrication Intervals
Lubricate bearings based on service type (e.g., monthly to 18 months).
Grease Compatibility and Application
Use recommended grease, avoid over-greasing, and prevent mixing incompatible greases.
Wheel Inspection and Cleaning
Inspect wheel for material buildup that causes vibration or corrosion.
Motor Lubrication
Ball Bearing Motor Lubrication
Ball bearing motors are permanently lubricated from the factory; no additional maintenance needed.
Sleeve Bearing Motor Lubrication
Lubricate sleeve bearings every six months with SAE-20W lubricant (five drops per location).
Storage
Short-Term Storage
Store fans in a clean, dry location to prevent rust and corrosion.
Extended Storage Recommendations
Rotate shafts monthly for storage over 3 months; purge and replace grease after 6 months.
Limitation of Warranties and Claims
Warranty Period and Conditions
One year from installation or 18 months from shipment; requires notification and return of defective parts.
Exclusions from Warranty
Excludes altered serial numbers, components warranted separately, and damage from misuse.
Limitation of Liability
Expressly in lieu of all other warranties; no liability for indirect or consequential damages.
Effect of Non-Payment on Warranty
Failure to pay within 60 days releases seller from all warranty obligations.
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