SPX Cooling Technologies 1200 Specifications, Specification Value, 5.0Mechanical Equipment, steel

Marley / Sigma 1000/1200 CoolingTower / Specifications: Base

Specifications Specification Value

5.0Mechanical Equipment:

18

5.1	Fan(s) shall be propeller-type, incorpo-	■ Standard fan drives of other manufacturers may use V-belts.
	rating heavy duty blades of cast alumi-	Considering the size of fans involved—and the horsepowers
	num or high strength, inert composite	applied—this is not good design practice. Geareducer® drive is
	material. Blades shall be individually	far more reliable and trouble free, and is currently offered as an
	adjustable and replaceable. Fan(s) shall	option by at least two other cooling tower manufacturers.
	be driven through a rightangle, indus-	Unless otherwise specified, motor speed will be 1800 RPM in
	trial-duty, oil-lubricated, geared speed
	reducer. Speed reducers employing	60 Hertz areas and 1500 RPM in 50 Hertz areas. If you prefer the
	pulleys and belts will not be accepted.	operating flexibility of two-speed operation, please specify the
		RPM to be 1800/900 (1500/750 in 50 Hertz regions).

5.2Motor(s) shall be ____ hp maximum,

	TEFC, 1.15 service factor, and specially	The driveshaft turns at the motor speed and is, therefore, most
	insulated for cooling tower duty. Speed	sensitive to operational imbalance. Stainless steel manufacture
	and electrical characteristics shall be	assures that the driveshaft will not become unbalanced as a
	1800 (1800/900) RPM, single winding,	result of corrosion.
	___ phase, ___ hertz, ___ volts.	The extended oil line to an external dip stick provides a conve-
5.3	Motor shall be located outside the fan	nient means of checking the level of oil in the Geareducer. As
	cylinder at the fan deck, and shall be	indicated on page 27, a sight glass is also available in lieu of the
	connected to the speed reducer by	dip stick.
	a tubular stainless steel, dynamically	Fans of the
	balanced driveshaft equipped with neo-
	prene flexible coupling elements.	size used on
		large cooling
5.4	A galvanized oil gauge and drain line	towers are
	shall extend from the gear reducer to	applied at
	the vicinity of the motor, and shall be	speeds and
	equipped with a dip stick for oil level	horsepowers
	measurement.	that generate
		considerable
5.5	The complete mechanical equipment	torque—and
	assembly for each cell shall be sup-	structural
	ported by a rigid, unitized support that	tubular steel
	resists misalignment between the	resists this
	motor and the gear reducer. Support	torque very
	shall be heavy-wall tubular steel, to	effectively. The Marley torque-tube assures that all of the mechan-
	which heavy plate platforms for the	ical equipment remains aligned, and that the rotating fan is prop-
	motor and gear reducer have been	erly positioned within the fan cylinder. Hot-dip galvanizing after
	welded and the assembly shall be hot-	fabrication assures that all steel surfaces will be heavily coated
	dip galvanized after fabrication. The	with zinc for long-term protection against corrosion.
	support assembly shall also provide	Even in aggressive water conditions, the heavy construction of
	an inlet connection for incoming hot
	water, and shall serve as a crossover	the unitized support normally precludes the need for stainless
	pipe to deliver water to both sides of	steel.
	the tower.	The value of a 5 year mechanical equipment warranty speaks for
5.6	The mechanical equipment assembly	itself. Except for the motor, all of the mechanical equipment on
	shall be warranted for no less than five	a Marley tower is made by SPX Cooling Technologies. Cooling
	(5) years. This warranty shall cover the	tower vendors who purchase commercial fans, gear boxes,
	fan(s), speed reducers, driveshafts and	driveshafts, etc. may require that you deal directly with those
	couplings, and the unitized supports.	commercial suppliers for warranty satisfaction.