Loren Cook LXUL - User Manual

1PROPELLER UPBLAST IO&M B51071-005
Receiving and Inspection
Carefully inspect the fan and accessories for any damage
and shortage immediately upon receipt of the fan.
• Turn the propeller 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
TUB
Rotating Parts & Electrical Shock Hazard:
Fans should be installed and serviced by qualied personnel
only.
Disconnect electric power before working on unit (prior to re-
moval of guards or entry into access doors).
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 o󰀨, in case of an emergency and
in order that maintenance personnel are provided complete
control of the power source.
Grounding is required. All eld-installed wiring must be com-
pleted by qualied personnel. All eld installed wiring must
comply with National Electric Code (NFPA 70) and all applica-
ble local codes.
Fans and blowers create pressure at the discharge and vac-
uum at the inlet. This may cause objects to get pulled into the
unit and objects to be propelled rapidly from the discharge.
The discharge should always be directed in a safe direction
and inlets should not be left unguarded. Any object pulled into
the inlet will become a projectile capable of causing serious in-
jury or death.
When air is allowed to move through a non-powered fan,
the impeller can rotate, which is referred to as windmilling.
Windmilling will cause hazardous conditions due to unexpect-
ed rotation of components. Impellers should be blocked in po-
sition or air passages blocked to prevent draft when working
on fans.
Friction and power loss inside rotating components will cause
them to be a potential burn hazard. All components should be
approached with caution and/or allowed to cool before con-
tacting them for maintenance.
Under certain lighting conditions, rotating components may
appear stationary. Components should be veried to be sta-
tionary in a safe manner, before they come into contact with
personnel, tools or clothing.
Failure to follow these instructions could result in death or se-
rious injury.
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 environmen-
tal loading derived from the applicable building code for the
site. The local code o󰀩cial may require variations from the rec-
ognized code based on local data. The licensed engineer of
record will be responsible for prescribing the correct attach-
ment based on construction materials, code requirements and
environmental e󰀨ects specic to the installation.
®
PROPELLER UPBLAST
Upblast Propeller Roof Fans
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
This publication contains the installation, operation and
maintenance instructions for standard units of the Upblast:
Upblast Propeller Roof Fans.
• LXUL & LXUM
• LTU
• LEU
• LXULMO &
LXUMMO
• LTUMO
• LEUMO
• TUB
• EUB
• AUB
• TUD
• EUD
• AUD
• SUB
• SUBH
• AI Upblast
Carefully read this publication and any
supplemental documents prior to any
installation or maintenance procedure.
Loren Cook catalogs, Propeller Upblast and Propeller Roof,
provide additional information describing the equipment, fan
performance, available accessories and specication 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:
• lorencook.com
• info@lorencook.com
• 417-869-6474 ext. 166
For information and instructions on special equipment, con-
tact Loren Cook Company at 417-869-6474.

Summary

Safety Information

WARNING: Rotating Parts & Electrical Shock Hazard

Critical safety warnings for installation and servicing personnel.

Receiving and Inspection

Procedures for inspecting the fan upon receipt for damage and shortages.

Handling, Storage, and Installation Basics

Handling and Storage

Guidelines for lifting, handling, and storing the fan, including outdoor storage.

Installation - General Steps

Initial installation steps including damper, motor, and belt/pulley setup.

Wiring and Electrical

Wiring Installation

Guidance for electrical wiring installation according to codes and motor specs.

Wiring Diagrams

Visual guides for connecting various motor configurations.

Installation and Operation Steps

Fan Installation

Mounting the fan to the roof curb and securing it.

Final Installation and Startup

Completing installation, pre-start checks, and initial fan operation.

Inspection Intervals

Recommended times for inspecting fan operation after startup.

Maintenance and Performance Tuning

Maintenance Schedule

Establishing a schedule for regular fan inspections and cleaning.

Motor Services and Speed Adjustment

Motor service information and how to change fan speed using pulleys.

Maximum RPM Limits

Table showing maximum allowable RPM for different fan models.

Component Replacement and Troubleshooting

Pulley and Belt Replacement

Detailed steps for replacing pulleys and belts, including alignment.

Bearing Replacement

Procedures for replacing fan shaft bearings.

Propeller and Shaft Precautions

Safety guidelines for handling propellers and shafts.

Troubleshooting Guide

Common issues, causes, and solutions for fan operation problems.

Parts Identification - AUD;EUD;TUD

AUD;EUD;TUD Parts List and Diagrams

Part numbers and diagrams for AUD, EUD, and TUD fan models.

Parts Identification - EUB;AUB

EUB;AUB Parts List and Diagrams

Part breakdown diagrams and lists for EUB and AUB fan models.

Parts Identification - LXUL;LXUM;LEU

LXUL;LXUM Parts List and Diagrams

Part breakdown diagrams and lists for LXUL and LXUM fan models.

LEU Parts List and Diagrams

Part breakdown diagrams and lists for LEU fan models.

Parts Identification - LTU;LXULMO;LXUMMO

LTU Parts List and Diagrams

Part breakdown diagrams and lists for LTU fan models.

LXULMO;LXUMMO Parts List and Diagrams

Part breakdown diagrams and lists for LXULMO/LXUMMO fan models.

Parts Identification - LTUMO;LEUMO

LTUMO Parts List and Diagrams

Part breakdown diagrams and lists for LTUMO fan models.

LEUMO Parts List and Diagrams

Part breakdown diagrams and lists for LEUMO fan models.

Parts Identification - AI Upblast and Warranty

AI Upblast Parts List and Diagrams

Part breakdown diagram and list for the AI Upblast fan model.

Limited Warranty Information

Details of the manufacturer's warranty policy for the fan parts.

Loren Cook LXUL Specifications

General

Motor	TEFC
Material	Galvanized steel
Wheel Type	Backward inclined
Housing Material	Galvanized steel
Static Pressure	Up to 2.5 in. wg
Voltage	115/230V, 208-230/460V
Mounting	Roof
Application	Commercial Kitchen Exhaust