SPX Cooling Technologies Marley Sigma Steel specifications Specifications, Specification Value

Marley / Sigma Steel CoolingTower / Specifications: Options

25

Specifications

Oil Level Sight Glass:

5.4Replace paragraph 5.4 with the fol- lowing: A galvanized oil gauge and drain line shall extend from the gear reducer to the vicinity of the motor, and shall be equipped with a bronze- bodied oil level sight glass.

Miscellaneous Options Steel Cold Water Basin:

10.1Replace paragraph 10.1 with the fol- lowing: Include a cold water collection basin constructed of 12 gauge hot-dip galvanized formed steel sheets. These sheets shall be bolted, gasketed and caulked to form a watertight basin 18" deep. A depressed, side outlet sump shall be included, having a 1/4" thick faceplate drilled for a standard 125# flange connec- tion. An appropriately sized (3" diameter or larger) galvanized standpipe overflow shall be provided. The standpipe shall be removable for flush-out cleaning of the basin. A float-operated, mechanical make- up valve shall also be included, installed adjacent to the endwall access door.

Factory Mutual Approval:

3.5Add the following paragraph in the Construction section: The tower shall include all design and material modi- fications necessary to meet the fire rating requirements of Factory Mutual.

The product proposed shall be listed in the FM Approval Guide, latest edition.

Hot Water Basin Covers:

7.3Add the following paragraph to the Hot Water Distribution System Section: The distribution basins shall include galvanized steel covers. These covers shall be designed for a uniform live load of 40 psf, and shall be easily removable for maintenance.

Air Inlet Screens:

8.3Add the following paragraph to the Casing Section: The air inlet faces of the tower shall be covered by 1" mesh hot-dip galvanized welded wire screens. Screens shall be mounted in galvanized steel U-edging and shall be removable.

Specification Value

■The oil level sight glass is a convenience item that is preferred by many users. The same purpose is, of course, served by either the dip stick or the sight glass.

■Marley basins are used to permit the installation of towers on elevated platforms or foundations.

This is the simplest of several cold water basin designs available for the Sigma Steel towers. Because of its bolted construction, it has the advantage of being hot-dip galvanized after fabrication. Marley can also install a 10 gauge welded stainless steel basin for a Stainless Steel Sigma. See 24.

■This could have a very beneficial effect upon your fire insurance premiums. Towers not able to meet FM require- ments may require the inclusion of a fire protection sprinkler system to achieve a comparable level of insurance premium cost.

■These covers are designed to keep leaves and debris out of the circu- lating water system. They also serve to suppress algae formation by shielding the incoming hot water from direct sunlight.

■In wooded or windy areas, these screens help to keep leaves or blow- ing debris out of the cooling tower and circulating water system.