SPX Cooling Technologies 1200, 1000 Specifications, Specification Value, 8.0Casing, 9.0Access

Marley / Sigma 1000/1200 CoolingTower / Specifications: Base

Specifications Specification Value

7.0Hot Water Distribution System:

20

7.1	The mechanical equipment support/	■ Gravity-flow distribution basins are a feature of crossflow type
	crossover pipe shall deliver water to	towers. These basins are out where they can be easily inspect-
	two open hot water basins per cell	ed—even maintained—while the tower is in operation. Spray
	at the fan deck elevation. Water shall	systems of counterflow towers, sandwiched between the top of
	exit these basins to the fill by gravity	the fill and the drift eliminators, are extremely awkward to access
	through metering orifice-type polypro-	and maintain.
	pylene nozzles situated in the basin
	floor. Nozzles shall be easily removable	Marley flow-control valves remain serviceable for the life of
	and replaceable.	the tower, and provide a continuing means of flow-regulation
7.2	Heavy-duty, industrial grade flow-	between hot water basins—and between cells of multicell towers
		as well. Towers without valves do not provide this valuable oper-
	control valves shall be provided at	ating flexibility.
	the inlet to each basin. These valves
	shall permit both flow balancing and
	maintenance shut-off to selected cells,
	or portions of cells. Valves shall have
	machined cast iron bodies, with stain-
	less steel operating stems, and heavy-
	duty locking handles.

8.0Casing:

8.1Tower endwalls shall be cased with ribbed FRP panels, lapped and sealed to prevent leakage. Tower corners shall be finished with FRP corner rolls.

9.0Access:

9.1Single cell towers shall include a 33" wide by 61" high molded FRP access door in one endwall casing for access to the interior of the tower. Casing access door shall be hinged and equipped with a latch operable from both inside and outside the tower. Multicell towers shall have an access door in both endwalls, and shall include

	a lift-out door in each transverse parti-		■The access doors on other towers may be unreasonably small.
	tion to give free access through the		Specifying the size of the door will cause those bidders to take
	tower.		exception, alerting you to a potential maintenance headache.
9.2	The top of the tower shall be equipped		Good maintenance practice requires periodic access to the top of
	with a sturdy 42" high wood guardrail		the tower to inspect the distribution basins, as well as the struc-
	system; top rails, intermediate rails,		tural integrity of the fan deck, fan cylinder, and fan—especially the
	and toeboards; conforming to OSHA		fan blade securing hardware. And there are no induced-draft cool-
	standards. Posts shall be 4"x4", on no		ing tower designs that are immune to this need!
	greater than 8'-0" centers. Guardrails
	shall be 2"x4". Single 2"x4" top rail will
	be acceptable up to 6'-0" span. Above
	6'-0" span, an additional 2"x4" cap strip
	shall be included.	➠