COOK GR - Manual (Page 2)

2
For units with birdscreen: fasten securely to the
section rail inside of the hood with speed screws(A)
and washers(B) stretching the birdscreen(C) tight as
possible. For aluminum birdscreen replace washer with
(provided) aluminum strips. On filtered units, the (optional)
birdscreen comes attached to the top of the throat.
C
A
B
Hood panel
Throat
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).
For units with multiple base assemblies: fasten securely
the base sections through the base splice bracket using
bolts and nuts (provided).
1. Set assembled hood on base, aligning the mounting
bracket and section rail holes.
2. If necessary, attach base to mouting angle with bolt
(provided) through base into the nut on the support
angle (provided)
Maintenance
Hood Access
To access the throat of the unit, take the entire hood off
by removing the bolts attaching the mounting bracket to
the mounting channels. GR units with less than a 73” throat
length and GI units with less than a 61” throat length can
be hinged. Hinging is accomplished by removing the bolts
on one side and loosening the two bolts (Refer to figure 2)
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.
Warranty
Loren Cook Company warrants that your Loren Cook
fan was manufactured free of defects in materials and
workmanship, to the extent stated herein. For a period of
one (1) year 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 fan in service.
This warranty is void if the fan 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 fan 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 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. 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 fan in service specifically the right. You may have other
legal rights which vary from state to state.
For fans provided with motors, the motor manufacturer
warrants motors for a designated period stated in the
manufacturer’s warranty. Warranty periods vary from
manufacturer to manufacturer. Should motors furnished
by Loren Cook Company prove defective during the
designated period, they should be returned to the nearest
authorized motor service station. Loren Cook Company will
not be responsible for any removal or installation costs.
Figure 1
Figure 2