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Assembly Instructions
Introduction
The PT2 Cooling Tower should be rigged and assembled as outlined in this bulletin. These
procedures should be thoroughly reviewed prior to the actual rigging and assembly of the equipment
to acquaint all personnel with procedures to be followed and to ensure that all necessary equipment
will be available beforehand.
Be sure to have a copy of the certified drawing available for reference. If you do not have a copy of this
drawing, or if you need additional information about this unit, contact your local BAC Representative
whose name and telephone number are on a label on the basin sidewall. The model number and se-
rial number of the unit are also located in this area.
Shipping
BAC Cooling Towers are factory assembled to ensure uniform quality and minimum field assembly.
All PT2 Cooling Towers ship in two sections as standard. Optionally, PT2 Cooling Towers can ship in
three sections for ease of transport or rigging. For the dimensions and weights of a specific unit or
section, refer to the certified drawings.
Check Unit Before Rigging
When the unit is delivered to the jobsite, it should be checked thoroughly to ensure all required items
have been received and are free of any shipping damage prior to signing the bill of lading. The
following parts should be inspected:
• Sheaves and Belts
• Bearing Supports
• Fan(s) and Fan Shaft(s)
• Float Valve Assembly(s)
• Fill
• Interior Surfaces
• Louvers
• Miscellaneous Items:
All bolts, nuts, washers, and sealer tape required to assemble sections or component
parts are furnished by BAC and shipped with the unit. A checklist inside the envelope
attached to the side of the unit marked "Contractor's Installation Instructions" indicates
what miscellaneous parts are included with the shipment and where they are packed.
Unit Weights
Before rigging any unit, the weight of each section should be verified from the unit certified drawing.
Unit print weights include the final assembled tower with all accessories. If necessary, accessory
weights (found on the respective drawing) can be deducted from the total weight.
WARNING: Before an actual lift is undertaken, ensure that no water, snow, ice, or debris has collected in the basin or
elsewhere in the unit. Such accumulations will add substantially to the equipment's lifting weight.
PT2 Rigging and
• Bearings
• Fan Motor(s)
• Fan Guard(s)
• Water Distribution System
• Cold Water Basin Strainer(s)
• Exterior Surfaces
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Summary of Contents for B.A.C. PT2
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Page 1: Assembly Instructions
BAC Cooling Towers are factory assembled to ensure uniform quality and minimum field assembly. All PT2 Cooling Towers ship in two sections as standard. Optionally, PT2 Cooling Towers can ship in three sections for ease of transport or rigging. For the dimensions and weights of a specific unit or section, refer to the certified drawings. - Page 2 WARNING: In the event of extended lifts or where hazards exist, the lifting devices should be used in conjunction with safety slings placed under the unit. Anchoring Seven-eighths inch (7/8”) diameter holes are provided in the bottom flange of the basin section for bolting the unit to the support beams.
- Page 3 PT2-0812 PT2-1009 PT2-1012 PT2-1212 Table 1 All PT2 Cooling Towers are designed to be lifted in one assembled piece as shown in Figure 2. The optional 2-piece lift is shown in Figure 1. Lower Section Upper Section One Piece Figure 1 Figure 2 Figure 3 shows the proper rigging and assembly of units that ship in three-sections (optional).
- Page 4 Match marks must line up. Bolt in place as illustrated in Figure 5, using a 1/2” bolt and flat washer. The assembled PT2 Cooling Tower is now ready to be lifted onto the tower support as a single piece and bolted into place. Use the lifting devices provided at the top of each unit as shown in Figure 2.
- Page 5 Use the lifting devices at the top of each subsequent cell to slide the cells together. Use the flume box assembly procedure outlined below to connect the basins of multi-cell units. PT2 Flume Box Installation 1. Position Cell #1 on the unit support and bolt in place 2.
- Page 6 3/8” wing nut and flat washers Water Baffles For multi-cell PT2 Cooling Towers, water baffles join the air louver sections to prevent leaks. To install the water baffles, follow the steps below. Water Baffle Installation (Figure 11): 1.
- Page 7 Figure 12 Figure 13 Note: All other PT2 models have fan motor mounted and tensioned at the factory Warning: Ensure that the fan guard is properly installed prior to commencing operation Installation of the Optional Side Outlet Depressed Sump Box The optional side outlet depressed sump box allows a cooling tower water outlet connection to be piped from underneath the unit in four possible directions, 90˚...
- Page 8 Detail B Optional Factory Pre-Wired Terminal Box BAC offers an optional terminal box with factory pre-wiring for PT2 models 0412, 1009, 1012 and 1212. When this option is ordered, the tower fan motor(s) and vibration cutout switch are wired at...