SPX Cooling Technologies 1200, 1000 manual Available Options, Plenum Walkway

/ Available Options /

Accessory	Description and Remarks
Plywood Cold Water	Pressure-treated Douglas fir plywood collection
Collection Basin	basin for towers located above grade.
	See page 11.
Bottom-Outlet Sump	Square-plan galvanized steel sump with bottom
	outlet. Outlet connection is a hole and bolt circle
	conforming to 125# ASME pipe connection.
	Includes a plugged drain connection in sump
	bottom.
Extended	Interior tower columns can be extended to
Columns for Deep	permit concrete basin depth of up to 5’-6”.
Collection Basin	Some exceptions apply, so consult your
	Marley sales representative
Fan Cylinder	Optional flared fan cylinder extensions improve
Extensions	fan efficiency to reduce your operating costs.
	Extensions on Sigma 1000 Series towers
	conform to OSHA requirements without fan
	guards.
Cell Partitions	Extra partitions between fan cells for specific
	operating considerations. See page 9.
Vibration Limit	Robertshaw or Metrix single-pole, double-throw
Switch	vibration switches in NEMA 4 housing. Double-
	pole, double-throw models are also available.
Oil Level Sight Glass	A brass-fitted oil level sight glass takes the place
	of the dip stick on the external oil fill and drain
	system. Permits easy reading of oil level and also
	lets you change oil through the lube line.
Air Inlet Screens	Galvanized wire mesh screens over the air inlets
	keep leaves and trash out of the tower. Easily
	removable. Choose either treated fir frames or
	galvanized steel U-edge frames.
Plywood	Removable, treated fir plywood covers keep
Distribution Basin	upper basins free of leaves and debris. They
Covers	also tend to retard growth of algae by keeping
	ultraviolet radiation away from the warm
	water in the basins. Covers may be used as a
	working surface for tower maintenance.

Accessory	Description and Remarks
Additional Access	Extra access door on single-cell towers
Door	offers easy access through either endwall.
Wood Stairway	Pressure-treated Douglas fir 45° stairway located
	at tower endwall provides access to the fan
	deck. Choose a stairway in place of one endwall
	ladder, or use both ladders as well as the
	stairway. Handrails and kneerails are standard,
	so design conforms to OSHA standards.
Steel Ladder	Galvanized steel ladder conforms to OSHA
	standards. May be in place of or in addition to
	standard aluminum ladders.
Ladder Safety Cage	Galvanized steel circular framework, bolts
	to ladder siderails and conforms to OSHA
	standards. Cages extend from the top of the
	guardrail to about 7’ above the base of the
	ladder. If the tower fan deck is more than 20'
	above roof or grade, OSHA requires safety cages.
Plenum Walkway	Pressure-treated Douglas fir plenum walkways
	extend the full length of the tower from access
	door to access door above the water line.
	Guardrails are optional. However, OSHA requires
	guardrails if the walkway is 4'-0" or more above
	the basin floor.
Ladder Extensions	Used when tower is elevated appreciably above
	working level. Extensions attach to the normal
	ladder and may require base anchorage
	(depending on length).
Premium	Choose from several corrosion-resistant
Hardware	hardware options, providing different degrees of
	protection.
Fire Protection	Sprinkler systems and overlay materials let you
	choose from a range of fire protection options.
	See page 10.
Redwood Fan Deck,	You can choose redwood instead of Douglas fir
Distribution Basin, or	for any or all of these tower elements.
Tower Structure

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