Carnes GI Installation Manual
GI/GR
Gravity Vents
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
This publication contains the installation instructions for standard units of the GI/GR - Gravity Ventila-
tors. Carefully read this publication prior to any
installation procedure.
Loren Cook catalog, Gravity Ventilation, provides addi-
tional information describing the equipment, unit 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 a GI/GR unit, carefully
inspect it for damage and shortage.
• Check dampers (if supplied) for free operation of all
moving parts.
• Record on the Delivery Receipt any visible sign of damage.
Handling
Lift the unit by the lifting
lugs (Refer to figure 1) or
shipping carton. Never lift
by the hood.
Storage
If the unit 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.
Hinge Bolt
Lifting Lug
Figure 1
e) Set assembled hood on base, aligning the mounting
bracket and section rail holes.
f) If necessary, attach birdscreen to inside of base using
speed screws and washers* (provided) stretching the
birdscreen tight as possible.
g) If necessary, attach base to support angle with bolt
(provided) through base into the nut on the support
angle (provided).
* For aluminum birdscreen replace washer with aluminum
strips (provided).
Hood Access
Hoods can be hinged for access on GR units with less than
a 73” throat length, and GI units with less than a 61” throat
length. Hinging is accomplished by removing the bolt
attaching the mounting bracket to the mounting channels on
one side and loosening the two bolts on the other side. Care
should be taken when hinging the hood, especially in high
wind conditions.
Filters
Filter inspection and cleaning intervals can vary from
once a week to twice per year depending on contaminant
present and acceptable pressure drops across the filter.
Under most conditions filters may be cleaned with hot
water and a mild soap solution (such as dish washing liquid) or steam. Some caustic cleaners will damage the filter.
If in doubt, please consult the factory for a compatibility list.
High pressure spray washers should be limited to 2,000
psi operating pressure. Every attempt should be made to
remove the contaminants from the filter in a “backwash” flow
(note airflow arrow on the filter frame). Once the filter is dry,
it may be returned to the appropriate filter racks in the same
orientation (airflow direction) as they were removed.
Knockdown Reassembly
All knocked down hoods are factory preassembled and
then knocked down for shipping. Reassemble by aligning
holes and bolting together.
a) Attach hood sections together by overlapping joining
seams. Refer to figure 2. Align holes and use the provided section rail splice and bolts to secure hood section together.
b) For units with birdscreen, fasten securely to the section
rail inside of the hood with speed screws and washers*
(provided) stretching the birdscreen tight as possible.
Refer to figure 3.
c) For units with two piece mounting channel, insert
mounting channel splice into the two pieces of mounting channel aligning the holes. Fasten securely to
base with bolts and nuts (provided).
d) For units with multiple base assemblies, fasten
securely the base sections through the base splice
bracket using bolts and nuts (provided).
Retaining Clip
Retaining Clip
GI/GR
1
GI / GR Knockdown Assembly
Figure 2
GI/GR Parts List
Birdwire Attachement Detail
Figure 3
ITEM
NUMBER
1 Hood Panel
2 End Panel
3 Section Rail
4 Mounting Bracket - Left
5 Mounting Bracket - Right
6 Mounting Rail
7 Base Weldment
8 Self-Tapping Screw
9 Wizzbolt
10 Wizznut
11 Birdscreen
GI / GR Standard Assembly
Limited Warranty
Loren Cook Company warrants that your Loren Cook ventilator was manufactured free of defects in materials and workmanship, to the extent stated herein. For a
period of five (5) years after date of shipment, we will replace any parts found to be defective without charge, except for shipping costs which will be paid by you.
This warranty is granted only to the original purchaser placing the unit in service. This warranty is void if the unit or any part thereof has been altered or modified
from its original design or has been abused, misused, damaged or is in worn condition or if the unit has been used other than for the uses described in the company
manual. This warranty does not cover defects resulting from normal wear and tear. To make a warranty claim, notify Loren 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 unit.
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. If you are entitled to warranty relief, a warranty adjustment will be completed within sixty (60) business days of the receipt of
your written complaint by Loren Cook Company. This warranty gives only the original purchaser placing the unit in service specifically the right. You may have other
legal rights which vary from state to state.
12 Self Tapping Screw
13 Flat Washer
DESCRIPTION
ITEM
Corporate Offices: 2015 E. Dale Street Springfield, MO 65803 417.869.6474
lorencook.com
2
GI/GR IOM - August 2004
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