COOK TRE - Manual

Extruded Relief or Intake Ventilators
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
This publication contains the installation instruc-
tions for standard units of the TRE - Extruded Relief or
Intake Ventilator. Carefully read this publication prior
to any installation procedure.
Loren Cook catalog, Gravity, provides additional informa-
tion describing the equipment, unit performance, available
accessories, and specification data.
For additional safety information, refer to AMCA publica-
tion 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@loren-
cook.com.
For information and instructions on special equipment,
contact Loren Cook Company at 417/869-6474.
Receiving and Inspection
Immediately upon receipt of a TRE 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 dam-
age.
Handling
Lift the unit by the base or shipping carton. Never lift by
the tiers.
Storage
If the unit 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 the weather.
Installation
Damper and Curb Installation
Curb dimensions are calculated by adding 4” to the throat
width and throat length.
The optional backdraft damper is 1-1/2” larger than the
throat length and throat width. The damper is to be mounted
in the throat of the TRE.
Optional filters are shipped installed in the unit from the
factory.
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
2,000psi operating pressure. Every attempt should be
made to remove the contaminants from the filter in a “back-
wash” 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.
Maintenance
Establish a definite schedule per the manufacturers rec-
ommendation for inspecting any accessory filters or damper
units that may have been installed with the ventilator.
Inspect the ventilator yearly for any debris that may
obstruct airflow. Check exterior surfaces for dust and
grease. To assure proper operation, remove any dust and
grease from the TRE surfaces.
The TRE top cap may be removed for roof top access to
the throat of the ventilator and access to the optional filters.
Filters may be removed for cleaning and maintenance by
sliding them up and out of the unit. Be sure to reinstall all top
cap fasteners upon reassembly.
TRE
TRE