SPX Cooling Technologies 1000, 1200 Specifications, Specification Value, 2.0Thermal Performance

Marley / Sigma 1000/1200 CoolingTower / Specifications: Base

Specifications Specification Value

2.0Thermal Performance:

15

2.1	The tower shall be capable of cooling	■Your reason for purchasing a cooling tower is to obtain a con-
	_____ GPM of water from ____ °F to	tinuing flow of cooled water as defined in the first paragraph at
	_____ °F at a design entering air wet-	left. If the tower that you purchase is incapable of performing
	bulb temperature of _____ °F. The cool-	as specified, then you will not have received full value for your
	ing tower manufacturer shall guarantee	money.
	that the tower supplied will meet	Bear in mind that the size—and cost—of a cooling tower var-
	the specified performance conditions
	when the tower is installed according	ies directly with its true thermal capability. This paragraph is
	to plans.	intended to protect you against either intentional or inadvertent
		under sizing of the tower by the manufacturer. Judging the level
2.2	The purchaser will arrange for an	of performance of a cooling tower on critical processes is never
	on-site thermal performance test, to	easy, and the potential risk of a non-performing cooling tower
	be conducted in the presence of the	usually causes the requirement for a mandatory acceptance test
	manufacturer and owner, and under	to be very desirable.
	the supervision of a qualified, disinter-	Your contract with the successful bidder should establish the
	ested third party in accordance with
	CTI (Cooling Technology Institute) ATC-	acceptable remedies for missed performance, which might
	105 standards during the first full year	include:
	of operation. If the tower fails to per-	• The addition of one or more cells of tower, as necessary, to
	form within the limits of test tolerance,
	then the cooling tower manufacturer	bring the cooling tower to the specified level of performance.
	will install additional cells and/or make	This is usually limited to the scope of work as defined in the
	such corrections as are agreeable to	specs, which means that you (the owner) will have to pay for
	the owner and shall pay for the cost of	the additional basin, wiring, starters, piping, etc.
	a retest. If the tower still fails to per-	• The reimbursement of a portion of the total contract price equal
	form as specified, then the manufac-
	turer shall make such reimbursements	to the percentage deficiency in performance.
	as are appropriate and agreeable to the	Under no circumstances should you allow the manufacturer to
	owner to compensate for the perfor-
	mance deficiency.	re-pitch the fans to increase motor brake horsepower above that
		shown in the proposal. That creates additional operating costs
		that will continue for the life of the tower—and imposes no pen-
		alty on the manufacturer.

	95°
	90°
	85°
(°F)
TEMP.	80°
							5°F RANGE
WATER
	75°						10°F RANGE
							15°F RANGE
COLD	70°
	65°
	60°
	55°
	50°	55°	60°	65°	70°	75°	80°

WET BULB TEMP. (°F)

Typical cooling tower performance curve.