COOK Automatic Belt Tensioner Supplement I - Manual (Page 2)

2
Mounting
Bolt
Size 402-490
Belt Tensioner
Installation
(Shown with RT3000
Belt Tensioner and
2 Groove Idler)
Size 120-365
Belt Tensioner Installation
(Shown with RT1000 Tensioner and 1 Groove Idler)
2nd Notch
RT1000 Tensioner
Single Groove
Idler Sheave
Size 100 Belt Tensioner Installation
(Shown without belt installed and
tensioner mounting bolt tully tightened)
FIGURE 1
(Shows motor plate raised 3/4”
by using added slots to allow for
installation of short shaft motors)
Corporate Offices: 2015 E. Dale Street Springfield, MO 65803 417.869.6474
lorencook.com
Limited 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, mis-
used, 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.
LOREN COOK COMPANY
Automatic Belt Tensioner Supplement I - March 2010
(Size 402-490 units with counter clockwise rotation
point clockwise and clockwise rotation point counter
clockwise.) If arrow is pointing the wrong direction,
remove the back of tensioner housing and the spring.
Then flip the spring over, the spring’s center “tail” must
engage the slot in the center shaft. Then push out the
directional arrow piece located in the arm assembly,
and reverse the arrow so it points the opposite way
and snap in place. Note that if the arrow piece is not
pointing in the correct direction, the tensioner cannot
be reassembled.
2. The RT4000 tensioner requires considerable force to
overcome it’s spring tension. If force is so strong that
the procedure given in Note 7 won’t work, use the fol-
lowing procedure. With tensioner mounting bolt
only finger tight, rotate tensioner back so that belts
can be installed easily. Now rotate tensioner arm
until belts begin to tighten and you feel light spring
tension. Hook in provided spanner wrench and
rotate tensioner arm until alignment marks are 3/4
apart. While holding spanner wrench securely at
this position, tighten tensioner mounting bolt fully
and remove spanner wrench.
3. Once installed, the RT4000 tensioner has consid-
erable force. The tensioner comes with a limited-
use spanner wrench. The spanner wrench must
be used to hold the tensioner base when loosen-
ing the mounting bolt.