/ Available Options /
Accessory | Description and Remarks |
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|
Plywood Cold Water | |
Collection Basin | basin for towers located above grade. |
| See page 11. |
|
|
| 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 |
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 |
Switch | vibration switches in NEMA 4 housing. Double- |
| pole, |
|
|
Oil Level Sight Glass | A |
| 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 |
|
|
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 |
Door | offers easy access through either endwall. |
|
|
Wood Stairway | |
| 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 | |
| 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 |
| 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 |
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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