FXT

1.0 Cooling Tower

1.1 General: Furnish and install _____ factory-assembled, forced-draft, axial fan, crossflow cooling tower(s). The tower(s) shall have air entry on one side only. The tower(s) shall have the fan and all moving parts located in the dry entering airstream provide greater reliability and long life. Overall dimensions shall not exceed approximately _____ mm long x ______ mm wide x _____ mm high. The total connected fan kW shall not exceed _____ kW. The cooling tower(s) shall be Baltimore Aircoil Model ____________.

1.2 Thermal Capacity: The cooling tower(s) shall be warranted by the manufacturer to cool _____ l/s of water from ______ °C to _____C at _____°C entering wet-bulb temperature.

1.3 Corrosion Resistant Construction (standard): Unless otherwise noted in this specification, all steel panels and structural members shall be constructed of heavy-gauge hot-dip galvanized steel with all edges given a protective coating of zinc-rich compound and the exterior protected with the BALTIPLUS Corrosion Protection.

(Alternate 1.3) Corrosion Resistant Construction (optional): Unless otherwise noted in this specification, all steel panels and structural members shall be protected with the BALTIBOND® Corrosion Protection System. The system shall consist of hot-dip galvanized steel prepared in a four-step (clean, pre-treat, rinse, dry) process with an electrostatically sprayed, thermosetting, hybrid polymer fuse-bonded to the substrate during a thermally activated curing stage and monitored by a 23-step quality assurance program.

1.4 Quality Assurance: The cooling tower manufacturer shall have a Management System certified by an accredited registrar as complying with the requirements of ISO-9001 to ensure consistent quality of products and services.

1.5 Warranty: The manufacturer’s standard equipment warranty shall be for a period of not less than one year from date of startup or eighteen months from date of shipment, whichever occurs first.

2.0 Construction Details

2.1. Cold Water Basin: The cold water basin shall be constructed of heavy-gauge hot-dip galvanized steel. Standard accessories shall include circular access doors, large-area, lift-out hot-dip galvanized steel strainers with perforated openings sized smaller than water distribution nozzle orifices, an integral anti-vortexing hood to prevent air entrainment, and a brass make-up valve with large diameter plastic float, arranged for easy adjustment.

2.3. Water Distribution System: Hot water distribution basin shall be open gravity type and constructed of heavy-gauge, hot-dip galvanized steel. Basin weirs and plastic metering orifices shall be provided to assure even distribution of water over the wet deck surface. Lift-off distribution cover shall be constructed of heavy-gauge, hot-dip galvanized steel.

3.0 Mechanical Equipment

3.1. Fan(s): Fan(s) shall be heavy-duty, axial flow type. Air shall be drawn into the tower through a fan cylinder designed for streamlined air entry and minimum fan blade tip clearance for maximum fan efficiency.

3.2. Bearings: Fan(s) shall be mounted on a horizontal solid steel shaft supported by two heavy-duty, self-aligning, relubricatable ball bearings with cast iron housings and designed for minimum L10 life of 40 000 hours (280 000 Hr. Avg. Life). Extended lubrication lines are provided for ease of maintenance.

3.3. Fan Drive: Fan(s) shall be driven by V-belts and all moving parts shall be protected by removable steel screens that shall ship installed on the unit.

3.4. Fan Motor(s): Fan motor(s) shall be totally enclosed fan cooled (TEFC), reversible, squirrel cage, ball bearing type, designed specifically for cooling tower service. The motor shall be furnished with special moisture protection on windings, shafts and bearings.

4.0 BACross Wet Deck Surface and Drift Eliminators

4.1. Wet Deck Surface and drift Eliminators: The wet deck surface and integral drift eliminators shall be impervious to rot, decay, and fungus or biological attack. The wet deck surface shall be manufactured and performance tested by the cooling tower manufacturer to provide single source responsibility and assure control of the final product.

5.0 Access

5.1 Basin Access: Circular access doors shall be provided for easy access to the make-up water assembly and suction strainer for routine maintenance.

6.0 Sound

6.1 Sound Level: To maintain the quality of the local environment, the maximum sound pressure levels (dB) measured 15 m from the cooling tower operating at full fan speed shall not exceed the sound levels detailed below.

Need more information? Contact your local BAC representative.