SPECIFICATIONS
COOLING TOWER: Furnish and install (1) Induced Draft Counterflow Cooling Tower. Cooling tower shall be______ft. long x ______ft. wide x ______ ft.
overall height with a maximum operating weight of______lbs. Cooling tower shall consist of_____fan
cells with a maximum of_____total fan horsepower
and a maximum pump head of______ft.
Other contractor(s) will furnish all external piping, valves, pumps, electrical equipment other than cooling tower fan motors, wiring, controls, etc. all in accordance with general overall dimensions to be supplied by cooling tower manufacturer. All internal components of cooling tower as described following will be furnished and installed by the cooling tower manufacturer.
CAPACITY: Cooling tower shall be selected and guaranteed to cool______GPM of water from
______°F to ______°F at ______°F entering wet bulb
temperature.
MECHANICAL EQUIPMENT: Mechanical equipment shall be designed specifically for cooling tower usage and shall be mounted on a rigid unitized HDG steel support to assure permanent drivetrain alignment. Cooling tower manufacturer shall be responsible for equipment warranty.
FANS: Fans shall be of a
DRIVESHAFTS: Driveshaft tubes and flanges shall be manufactured of type 304 stainless steel. Couplings shall be hot dip galvanized cast iron, joined to the driveshaft by flexible neoprene bushings and cadmium plated steel inserts. Connecting hardware shall be 300 stainless steel. Driveshaft assemblies shall be dynamically balanced at the factory at full motor speed.
SPEED REDUCERS: Speed reducers shall be provided for right angle fan drive and shall be designed to AGMA standards for continuous duty operation, capable of reverse operation. Oil fill and drain lines are to be extended outside the fan cylinder to an oil level sight glass.
ELECTRIC MOTORS: Electric motors shall be_______
speed, single winding, variable torque, _____ hp
maximum, TEFC, and specially insulated for cooling tower duty. Speed and electrical characteristics shall be _____ RPM, _____ phase, _____ hertz, _____ volts.
If the load applied to the motor exceeds 90% of the nameplate rating, then the motor shall have a 1.15 service factor and the service factor beyond 1.0 shall not be considered available for load.
FILL: Heat transfer fill media shall be crosscorrugated 20 mil PVC sheets supported by stainless steel tubes which, in turn, are suspended by stainless steel tension hangers from concrete support beam members.
DRIFT ELIMINATORS: Drift eliminators shall be supplied in a 3 pass cellular arrangement of bonded 17 mil PVC sheets. Drift loss shall not exceed ______%
of circulating water.
HOT WATER DISTRIBUTION SYSTEM: Hot water distribution system in each cell shall be supplied with a single interior inlet terminating
FAN CYLINDERS: Fan cylinders shall have eased inlet design and be of molded fiber reinforced polyester with a minimum height of 6' 0.
OPTlONS: Factory Mutual Approval. The tower shall include all design and material modifications necessary to meet the fire rating requirements of Factory Mutual. The product proposed shall be listed in the FM Approval Guide, latest edition.
Masonry structure options at owner’s election:
WARRANTY: Warranty on all components against defective materials and workmanship will be extended for a period of one (1) year following initial operation but not exceeding eighteen (18) months from date of shipment. Components that may fail within warranty period shall be repaired and/or replaced including freight and installation labor.
Thermal testing of cooling tower will be done within one (1) year following structural completion in accordance with Cooling Technology Institute Acceptance Test Code CTI ATC 105. In the event test results indicate deficiency, manufacturer shall make alterations to overcome indicated deficiency and if such alterations are inadequate manufacturer shall refund a percentage of contract price proportional to tower deficiency.
