Loren Cook ACW-B - User Manual

This publication contains the installation, operation and
maintenance instructions for standard units of the AC-
Centrifugal Roof and Wall Exhausters.
• ACE-D / ACE-B
• ACW-D / ACW-B / ACW-HP / ACW-XP
• ACRU-D / ACRU-B / ACRU-HP / ACRU-XP
Carefully read this publication and any
supplemental documents prior to any
installation or maintenance procedure.
Loren Cook AC catalog provides additional information
describing the equipment, fan performance, available
accessories, and specification data.
For additional safety information, refer to AMCA
publication 410-96, Safety Practices for Users and Installers
of Industrial and Commercial Fans.
All of the publications listed above can be obtained from
Loren Cook Company by phoning (417)869-6474,
extension 166; by FAX at (417)832-9431; or by e-mail at
info@lorencook.com.
For information and instructions on special equipment,
contact Loren Cook Company at 417.869-6474.
Receiving and Inspection
Immediately upon receipt of an AC fan, carefully inspect
the fan and accessories for damage and shortage.
• Turn the wheel by hand to ensure it turns freely and
does not bind.
• Check dampers (if included) for free operation of all
moving parts.
• Record on the Delivery Receipt any visible sign of
damage.
Rotating Parts & Electrical Shock Hazard:
Disconnect electric power before working on unit.
Follow proper lockout / tagout procedures to ensure
the unit cannot be energized while being installed or
serviced.
A disconnect switch should be placed near the fan in
order that the power can be swiftly cut off, in case of
an emergency and in order that maintenance
personnel are provided complete control of the power
source.
Grounding is required. All field-installed wiring must
be completed by qualified personnel. All field-
installed wiring must comply with National Electric
Code (NFPA 70) and all applicable local codes.
Failure to follow these instructions could result in
death or serious injury.
Centrifugal Roof and Wall Exhausters
INSTALLATION, OPERATION AND MAINTENANCE
Handling
Lift the fan by the shipping
carton or lifting lugs provided
under top cap. NOTICE! Never
lift by the shaft, motor or
housing.
Storage
If the fan is stored for any
length of time prior to installation,
store it in its original shipping
crate and protect it from dust,
debris and the weather.
Installation
If the fan was delivered with the motor unmounted, see
the maintenance section for belt and pulley installation.
If the fan was purchased as a wall mount unit and a
grease terminator or grease trough was not purchased, a 1-
1/16 inch diameter drain hole should be drilled at the bottom
side of the fan for drainage.
Code requirements and environmental effects
The attachment of roof mounted fans to the roof curb
as well as the attachment of roof curbs to the building
structure must exceed the structural requirements
based on the environmental loading derived from the
applicable building code for the site. The local code
official may require variations from the recognized
code based on local data. The licensed engineer of
record will be responsible for prescribing the correct
attachment based on construction materials, code
requirements and environmental effects specific to
the installation.
Failure to follow these instructions could result in
death or serious injury.
AC
Lifting Lugs
®

Summary

General Procedures and Safety

Receiving and Inspection

Inspect fan and accessories for damage and shortage upon receipt.

Handling

Instructions on how to lift the fan safely using shipping carton or lifting lugs.

Storage

Guidance on storing the fan in its original crate to protect from elements.

Rotating Parts & Electrical Shock Hazard Warning

Safety warning about disconnecting power and following lockout/tagout procedures.

Code Requirements and Environmental Effects Warning

Warning regarding structural requirements for roof-mounted fans and local codes.

Installation Details

Wall Exhauster Installation

Steps for installing the fan using a mounting template and securing it to the wall.

Damper Installation

Procedure for installing dampers, ensuring free operation and securing.

Wiring Installation

Guidance on electrical wiring in accordance with local ordinances and NEC.

Motor Wiring Diagrams

Schematics for single-phase and three-phase motor wiring configurations.

Operation and Maintenance

Final Installation Steps

Ensuring fasteners are tight, checking voltage/amperage, and testing rotation.

Start-up and Initial Inspection

Procedure for starting the fan and initial checks for rotation, vibration, and noise.

Routine Inspection Schedule

Schedule for inspecting fan components at 30-minute, 8-hour, and 24-hour intervals.

Fan Bearing and Motor Bearing Maintenance

Information on fan bearing relubrication intervals and motor bearing lubrication.

Pulley and Belt Adjustments

Instructions for replacing pulleys and belts, and aligning pulleys for proper tension.

Wheel-to-Inlet Clearance

Critical clearance adjustment for optimal fan performance and overlap.

Troubleshooting Common Issues

Guidance on diagnosing and resolving problems like low capacity, vibration, and overheating.

Product Information and Warranty

ACE-D Parts List

Diagrams and part numbers for ACE-D series fan components.

ACE-B Parts List

Diagrams and part numbers for ACE-B series fan components.

ACW-D Parts List

Diagrams and part numbers for ACW-D series fan components.

ACW-B Parts List

Diagrams and part numbers for ACW-B series fan components.

ACRU-D and ACRU-B Parts Lists

Diagrams and part numbers for ACRU-D and ACRU-B series fan components.

Limited Warranty Information

Details on the one-year warranty, limitations, and claim procedures.

Loren Cook ACW-B Specifications

General

Drive Type	Belt
Speed	Variable
Phase	1 or 3
Wheel Diameter (in.)	12
Wheel Type	Aerofoil
Mounting	Wall
Voltage	115/230/460
Applications	Commercial, industrial