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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

•   Bearings 

•   Bearing Supports

•   Fan Motor(s)

•   Fan(s) and Fan Shaft(s)

•   Fan Guard(s)

•   Float Valve Assembly(s)

•   Water Distribution System

•   Fill

•   Cold Water Basin Strainer(s)

•   Interior Surfaces

•   Exterior 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 

Assembly Instructions 

Summary of Contents for PT2

Page 1: ...uld 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 Bearings Bearing Supports Fan Motor s Fan s and Fan Shaft s Fan Guard s Float Valve Assembly s Water Distribution System Fill Cold Water Basin Strainer s Interior Surfaces Exterior Surfaces Louver...

Page 2: ...s equipment Proper care procedures and tools must be used in handling lifting installing operating maintaining and repairing this equipment to prevent personal injury and or property damage Freeze Protection Cooling towers must be protected by mechanical and operational methods against damage and or reduced effectiveness due to possible freeze up Please refer to the Product and Applications Handbo...

Page 3: ...le Section Upper Section Upper Section One Piece PT2 Model Number H distance from lift point to lifting device in feet Lower Section Upper Section PT2 0412 16 8 PT2 0709 14 10 PT2 0809 14 12 PT2 0812 16 12 PT2 1009 14 14 PT2 1012 16 14 PT2 1212 16 16 Figure 3 shows the proper rigging and assembly of units that ship in three sections optional 3 Figure 1 Figure 3 Figure 2 H H H H H ...

Page 4: ...y a layer of 1 8 x 1 foam tape around the face of the flange over the centerline of the holes As illustrated in Figure 4 insert 3 8 self tapping screws in each hole from the upper section into the middle section and tighten Note On quad installations it is suggested that cells subsequent to the first have the upper and lower sections assem bled on the support foundation adjacent to the final mount...

Page 5: ...ng the same procedure Refer to Figure 6 4 Using drift pins to align the bolt holes place the flume box over the opening in the basin of Cell 1 and fasten into place Insert the 3 8 self tapping screws or bolts from the flume box into the basin wall as illustrated in Figure 7 Note Flume boxes furnished with units constructed with stainless steel basins are assembled with stainless steel bolts washer...

Page 6: ...sure Plate Installation Figures 9 and 10 1 Thread 3 8 self tapping screws from the flume box into the basin wall with the positive closure plate as shown 2 Position the neoprene gasket and positive closure plate over the bolts and fasten in place with 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...

Page 7: ...ections 90 apart The piping connection is a bolt circle designed to fit an ASME Class 150 flat flange with a full face gasket To install the side outlet depressed sump box follow the steps below 1 Wipe the edges around the opening in the cold water basin to remove any dirt or moisture that may have accumulated during shipment Apply a layer of 1 8 x 1 butyl sealer tape around the opening in the bas...

Page 8: ...tainless Steel Nema 3R terminal box see Figure 16 for the exterior location of the box on the tower The box includes a cover plate which once removed reveals an easy to follow wiring diagram and modular terminal blocks Remove the cover plate and install the collar which ships in the tower s cold water basin which has pre punched conduit holes Wiring from the terminal blocks to the unit controls is...

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