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This publication contains the installation, operation and
maintenance instructions for standard units of the LC (HLC-D,
HLC-B, TLC-D and TLC-B): Low Profile Roof Exhausters.
Carefully read this publication and any
supplemental documents prior to any
installation or maintenance procedure.
Loren Cook catalog, LC, provides additional information
describing the equipment, fan performance, available ac-
cessories and specification data.
For additional safety information, refer to AMCA Publi-
cation 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,
contact Loren Cook Company at 417-869-6474.
Receiving and Inspection
Carefully inspect the fan and accessories for any dam-
age and shortage immediately upon receipt of the fan.
• 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
Handling
Lift the fan by the base or the shipping carton.
NOTICE! Never lift by the shaft, motor or housing.
Storage
If the fan is stored for any length of time prior to installa-
tion, store it in its original shipping crate and protect it from
dust, debris and weather.
Installation
To prevent damage to the fan during shipping, motors 5 HP
and larger and extremely heavy motors (cast iron or severe duty)
are shipped loose and must be field mounted by bolting the mo-
tor on the motor mounting plate in the existing mounting slots.
LC IO&M
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
HLC
1
Low Profile Roof Exhausters
Rotating Parts & Electrical Shock Hazard:
Fans should be installed and serviced by qualified person-
nel only.
Disconnect electric power before working on unit (prior to
removal 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 off, in case of an emer-
gency and in order that maintenance personnel are pro-
vided 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.
Fans and blowers create pressure at the discharge and
vacuum 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 injury or death.
When air is allowed to move through a non-powered fan,
the impeller can rotate, which is referred to as windmill-
ing. Windmilling will cause hazardous conditions due to
unexpected rotation of components. Impellers should be
blocked in position 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 contacting them for maintenance.
Under certain lighting conditions, rotating components
may appear stationary. Components should be verified to
be stationary in a safe manner, before they come into con-
tact with personnel, tools or clothing.
Failure to follow these instructions could result in death or
serious injury.
The attachment of roof mounted fans to the roof curb as
well as the attachment of roof curbs to the building struc-
ture must exceed the structural requirements based on the
environmental loading derived from the applicable build-
ing 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 pre-
scribing the correct attachment based on construction ma-
terials, code requirements and environmental effects spe-
cific to the installation.
LC
B51031-003
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Table of Contents
Related Manuals for COOK LC Series
Summary of Contents for COOK LC Series
- Page 1 Disconnect electric power before working on unit (prior to Loren Cook catalog, LC, provides additional information removal of guards or entry into access doors). describing the equipment, fan performance, available ac- cessories and specification data.
-
Page 2: Pulley Alignment
Dampers Figure 2 indicates where to mea- sure the allowable gap for the drive If your fan is supplied with dampers, follow the directions alignment tolerance. All contact below. If your fan does not include dampers, proceed to points (indicated by WXYZ) are to Belt and Pulley Installation. -
Page 3: Wiring Diagrams
Wiring Diagrams 2 Speed, 2 Winding, 3 Phase Vari-Flow Motors Low Speed Low Speed For EC or VF see EC Motor Wiring supplement. For VF2 see Low Speed PM wiring supplement. Line Motor High Speed Single Speed, Single Phase Motor High Speed Ground A High Speed... -
Page 4: Maintenance
Start Up Fan Bearings Turn on the fan. In variable speed units, set the fan to its The fan bearings are provided prelubricated. Any spe- lowest speed. Inspect for the following: cialized lubrication instructions on fan labels supersedes • Direction of rotation information provided herein. -
Page 5: Bearing Replacement
Bearing Replacement Should the motor prove defective within a one-year pe- The fan bearings are pillow block ball bearings. riod, contact your local Loren Cook representative or your 1. Loosen screws on bearing cover. nearest authorized electric motor service representative. -
Page 6: Troubleshooting
Troubleshooting Wheel-to-Inlet Clearance The correct wheel-to-inlet clearance is critical to proper Problem and Potential Cause fan performance. This clearance should be verified before initial start-up since rough handling during shipment could Low Capacity or Pressure: cause a shift in fan components. Refer to wheel/inlet draw- •... -
Page 7: Parts List
Parts List HLC-B Size 270–540 Shown HLC-D Description Part No. Sizes 100–245 Sizes 270–540 Hinge Bar Hinge Bar Bearing Plate Bearing Plate Wheel Assembly Wheel Assembly Part No. Description (Sizes 100–180) Bearing (2) Bearing (2) Hinge Bar Motor Plate Motor Plate Wheel Assembly Motor Motor... -
Page 8: Limited Warranty
Cook Company, General Offices, 2015 East Dale Street, Springfield, Missouri 65803-4637, explaining in writing, in detail, your complaint and referring to the specific model and serial numbers of your fan. Upon receipt by Loren Cook Company of your written complaint, you will be notified, within thirty (30) days of our receipt of your complaint, in writing, as to the manner in which your claim will be handled.
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