Baltimore Aircoil Company PT2 Series User manual

RIGGING & ASSEMBLY INSTRUCTIONS
PT2 Cooling Tower
PT2

PT2 Cooling Towers should be rigged and assembled
as outlined in this manual.
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.
If outstanding circumstances require a departure from the
procedures outlined in this manual, contact your local BAC
Representative for guidance.
Be sure to have a copy of the submittal drawings available for reference.
If you do not have a copy of these drawings, or if you need additional
information about this unit, contact your local BAC Representative whose
name and telephone number are on the outside of the cold water basin. The
model number and serial number of the unit are also located in this area.

Table of Contents
RIGGING & ASSEMBLY INSTRUCTIONS » PT2 COOLING TOWER
1Introduction
2Safety
2Shipping
2Pre-Rigging Checks
3Cold Weather Operation
3Location
3Warranties
3Unit Operation
2Unit Rigging & Assembly
4Rigging
5Section Assembly of Two-Piece Cells
5Section Assembly of Optional Three-Piece Cells
6Rigging of Containerized Units
6Multi-Cell Unit Installation
9Motor Installation for PT2-0709, PT2-0809, PT2-0812, and PT2-0814
10 Fan Guard Installation
3Optional Accessory Installation
12 Side Outlet Depressed Sump Box
13 Bottom Water Outlet
14 Fan Cowl Extensions
14 Discharge Sound Attenuation (PT2-0412)
15 Motor Removal Davit
16 Inclined Access Ladder
18 Mechanical Access Platform
25 Mechanical Access Platform Ladder
27 Ladder Safety Cage
28 Automatic Bearing Greasers
28 Basin Accessories
28 Heater Control Panel
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PT2 COOLING TOWER
Introduction
1
Safety
Adequate precautions appropriate for the installation and location of these products should
be taken to safeguard the equipment and the premises from damage and the public from
possible injury. The procedures listed in this manual must be thoroughly reviewed prior to
rigging and assembly. Read all warnings, cautions, and notes detailed in the margins.
When the fan speed of the unit is to be changed from the factory set speed, including the
use of a variable speed device, steps must be taken to avoid operating at or near the fan’s
“critical speed” which could result in fan failure and possible injury or damage. Consult
with your local BAC Representative on any such applications.
Shipping
BAC PT2 Cooling Towers are factory assembled to ensure uniform quality with minimum
field assembly. As standard, models ship in two sections per cell (lower and upper).
Optional shipment of three sections per cell and optional containerized shipments are
available. Contact your local BAC Representative for more information. For the dimensions
and weights of a specific unit or section, refer to the submittal drawings.
Pre-Rigging Checks
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 Guard(s)
Fan(s) and Fan Shaft(s)
Float Valve Assembly(s)
Fill
Water Distribution System
Cold Water Basin Accessories
Interior Surfaces
Exterior Surfaces
Louvers
Mating Surfaces Between
Sections/Modules
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 marked “Customer
Information Packet” indicates
what miscellaneous parts are
included with the shipment and
where they are packed. This
envelope will be attached to the
side of the unit or located in a
box inside the unit.
WARNING: Failure to use lifting
provisions can result in a dropped
load causing severe injury, death,
and/or property damage. Lifts must
be performed by qualified riggers
following BAC published Rigging
Instructions, and generally accepted
lifting practices. The use of a
supplemental safety sling may also
be required if the lift circumstances
warrant its use, as determined by
the rigging contractor.
CAUTION: Only personnel qualified
to do so should undertake
the installation, operation,
maintenance, and repair of this
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.

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PT2 COOLING TOWER
Introduction
Introduction
Safety
Shipping
Pre-Rigging Checks
Unit Weights
Anchoring
Cold Weather Operation
Location
Warranties
Unit Weights
Before rigging any unit, the weight of each section should be verified from the unit
submittal drawing. Unit print weights include the final assembled tower with all
accessories. Accessory weights (found on the respective drawing) can be deducted from
the total weight.
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. Refer to the suggested support drawing
included in the submittal for location and quantity of the mounting holes. The unit must
be level for proper operation. Anchor bolts must be provided by others. The IBC rating is
only certified with standard anchorage locations. Using alternate anchorage locations or
alternate steel supports will void any IBC wind or seismic ratings. Contact your local BAC
Representative for details.
Cold Weather Operation
These products must be protected by mechanical and operational methods against damage
and/or reduced effectiveness during sub-freezing temperatures Please refer to the Common
Operation & Maintenance Manual available at www.BaltimoreAircoil.com, or contact your
local BAC Representative for recommended cold weather operation strategies.
Location
All evaporative cooling equipment must be located to ensure an adequate supply of fresh
air to the fans. When units are located adjacent to walls or in enclosures, care must be
taken to ensure the warm, saturated, discharge air is not deflected and recirculated back
to the air intakes.
Each unit must be located and positioned to prevent the introduction of discharge air
into the ventilation systems of the building on which the unit is located and of adjacent
buildings. For detailed recommendation on BAC equipment layout, see our website at
www.BaltimoreAircoil.com or contact your local BAC Representative.
Warranties
Please refer to the Limitation of Warranties (located in the submittal package) applicable
to and in effect at the time of the sale/purchase of these products.
Unit Operation
Prior to start-up and unit operation, refer to the PT2 Operation & Maintenance Manual
shipped with the unit and also available at www.BaltimoreAircoil.com
NOTICE: Before an actual lift is
undertaken, ensure 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.

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Rigging
Refer to Table 1 for the recommended vertical dimension “H” from the lifting device to
the spreader bar. 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.
Model Number
W
(Length of
Spreader Bar)
H (Distance From Lift Point to Lifting Device)
Lower
Section
Two-Piece Lift Three-Piece Lift
Upper Section/
Single-Piece Lift
Middle
Section
Upper
Section
PT2-0412 4' 16' 8' 8' 8'
PT2-0709 7' 4" 14' 10' 10' 10'
PT2-0809 8' 6" 14' 12' 12' 12'
PT2-0812 8' 6" 16' 12' 12' 12'
PT2-0814 8' 6" 16' 12' 12' 12'
PT2-1009 10' 14' 14' 14' 14'
PT2-1012 10' 16' 14' 14' 14'
PT2-1212 12' 16' 16' 16' 16'
PT2-1214 12' 18' 18' 18' 18'
PT2-1218 12' 18' 18' 18' 18'
Figure 2. Upper Section Two-Piece Lift
Table 1. Minimum Vertical Dimension and Spreader Bar Length
Figure 3. Lower Section Two-Piece Lift
NOTE: For weight information, refer
to the submittal drawing package.
H
H
Figure 1. Single-Piece Lift
H
PT2 COOLING TOWER
Unit Rigging & Assembly
2
W
W
WARNING: Failure to use lifting
provisions can result in a dropped
load causing severe injury, death,
and/or property damage. Lifts
must be performed by qualified
riggers following BAC published
Rigging Instructions, and generally
accepted lifting practices. The
use of a supplemental safety
sling may also be required if the
lift circumstances warrant its
use, as determined by the rigging
contractor.

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Unit Rigging & Assembly
Rigging
Section Assembly of
Two-Piece Cells
Section Assembly of Optional
Three-Piece Cells
All single cell PT2 Cooling Towers are designed to be lifted in one assembled piece as
shown in Figure 1. A two-piece lift is shown in Figures 2 and 3. All sections, with the
exception of the lower section, require the use of a spreader bar. The distance between
the spreader bar lifting points must be equivalent to the width between the unit lifting
ears. Any motors or accessories shipped in the cold water basin must be removed prior to
installation.
Section Assembly of Two-Piece Cells
1. Remove any motors or accessories shipped in the cold water basin.
2. Figures 2 and 3show the proper rigging of the sections for units that ship in two
sections. Position the lower section on the steel support and bolt in place. No foam
seal tape is required on the InterLok™ System casing joint (see Figure 4).
3. Using drift pins in the bolt holes provided, guide the upper section onto the lower
section. Match marks must line up.
4. Fasten the hardware between the upper casing and lower section per Figure 5.
NOTE: The IBC Rating is void if the
section assembly is not performed
as described in this manual.
Figure 5. InterLok™ System
Hardware Detail
Figure 4. InterLok™ System
Section Assembly of Optional Three-Piece Cells
Figure 6a. Lower Section Lift Figure 6b. Middle Section Lift Figure 6c. Fan Section Lift
H
PT2 COOLING TOWER
Unit Rigging & Assembly
H
H
No foam
seal tape is
required
Upper/Middle Section
Lower Section
Lower Section
Bolt
Flatwasher
Flatwasher,
Lock Washer,
and Nut
Middle/Upper Section

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Optional Three-Piece Cell Assembly Instructions
1. Remove any motors or accessories shipped in the lower section.
2. Figures 6a, 6b, and 6c on page 5 show the proper rigging for units shipped in three
sections.
3. Position the lower section on the unit support and bolt into place. No foam seal tape
is required on the middle InterLok™ Casing joint.
4. Using drift pins in the bolt holes provided, guide the middle section onto the lower
section. Match marks must line up.
5. Bolt the middle section in place as illustrated in Figure 5 on page 5, using a 3/8” bolt
and flat washer.
6. Remove the disposable middle section lifting ears and
discard.
7. Next, wipe down the mating surface at the top of the
middle section to remove any dirt or moisture that may
have accumulated during shipment.
8. Starting at one end, install a layer of 1/8” x 1” foam
seal tape (BAC Part # 270567) supplied with the unit
around the face of the flange, over the centerline of the
holes.
9. Using drift pins in the bolt holes provided, guide the
fan section on to the middle section.
10. As illustrated in Figure 7, insert 5/16” self-tapping
screws in each hole from the upper section into the
middle section and tighten.
11. For externally mounted motor models only, attach
the motor to the fan section per “Motor Installation
Instructions” on page 9.
Rigging of Containerized Units (Models PT2-0709)
1. Remove the unit from the container.
2. Containerized units ship in two parts within the container, where the fan section
is bolted to the lower section and the middle section is separate. Once the unit is
removed from the container, remove the bolts holding the fan section to the lower
section.
3. Assemble the fan section and the middle section by following steps 7 - 10 in the
“Optional Three-Piece Cell Assembly Instructions” section above.
4. Remove any motors or accessories shipped in the lower section.
5. Attach the motor to the fan section per “Motor Installation Instructions” on page 9.
6. Assemble the complete unit by following steps 3 - 5 in the “Optional Section
Assembly of Three-Piece Cells” section above.
Multi-Cell Unit Installation
Refer to the submittal drawing unit print for the proper orientation of each cell. All multi-
cell units have the cell number and “face” stenciled on the outer basin wall of each
section, as well as match marks to show how the cells are to be mated. Multi-cell unit
installations may use flume boxes to equalize the water level in the basin of each cell.
Follow directions in “Flume Box Installation” on page 7 for detail on their installation.
Foam
Seal
Tape
5/16” Self
Tapping
Screw Fan
Section
Middle
Section
Figure 7. Fan/Middle Section Assembly for
Optional Three-Piece Rigging

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Unit Rigging & Assembly
Section Assembly of Optional
Three-Piece Cells
Optional Three-Piece Cell
Assembly Instructions
Rigging of Containerized Units
Multi-Cell Unit Installation
Multi-Cell Unit Assembly
Flume Box Installation
NOTE: On quad-cell installations,
it is suggested that the cells
subsequent to the first cell have the
upper and lower sections assembled
on the support foundation adjacent
to the final mounting locations. This
will allow space for securing the
upper and lower sections of each
cell. Slide the subsequent cell(s) to
their final position using the lifting
devices at the top of the cell(s).
Flume Box Installation
1. Position Cell #1 on the unit support and bolt in place. Cell #1 will have a factory
installed flume box bolted onto Face B.
2. Wipe down the mating surface on the outer, protruding end of the flume box and apply
a layer of 1/8” x 1” butyl sealer tape (BAC Part #554000) around the face of the
flange over the centerline of the holes. Do not overlap or stretch the butyl sealer tape
too thinly at the corners. When it is necessary to splice the butyl sealer tape, be sure
to press the two ends together to form a smooth, continuous strip. See Figure 8.
3. Apply a second layer of butyl sealer tape over the first layer following the same
procedure.
4. Assemble Cell #2 just adjacent to its final location. Wipe down the mating surface
adjacent to the flume box opening to remove any dirt or moisture.
5. Position Cell #2 on unit supports. Using drift pins to ensure alignment, draw Cell #2
tight against the flume box, ensuring that the spacing between the cells at the bottom
basin flange is 1”.
6. As illustrated in Figure 9, insert 3/8” x 1 1/4” thread cutting screws in each hole from
the flume box into the basin wall and tighten. For basins with TriArmor®Corrosion
Protection System and stainless steel basins, bolt strips are provided in lieu of
individual thread cutting screws. For TriArmor basins only, a backing plate is provided
and must be installed inside of Cell #2, as seen in Figure 10. Secure using the
provided hardware.
Multi-Cell Unit Assembly
1. First, attach the first cell’s lower section to the supports. For units shipped in two
sections per cell, follow the instructions in “Section Assembly of Two-Piece Cells” on
page 5. For units shipped in three sections per cell, follow the instructions in “Section
Assembly of Optional Three-Piece Cells” on page 5.
2. Each subsequent cell should be assembled just adjacent to its final location, and then
properly positioned next to the previous cell. Ensure spacing between the cells at the
bottom flange is 1”.
3. Some units come furnished with a flume box. If they do, use the flume box assembly
procedure outlined below to connect the basins of multi-cell units.
Install
Backing
Plate Here
Figure 10. Backing Plate Installation
3/8” x 1 1/4”
Thread Cutting
Screw
Figure 9. Thread Cutting Screw Pattern for Flume Box
Detail A
Figure 8. Flume Box Butyl Sealer Tape Application
NOTE: If the unit is provided with
a positive closure plate requiring
installation, go to “Positive Closure
Plate Installation” on page 8 prior
to installing flat washers and wing
nuts.
1”
NOTICE: If the backing plate is not
properly installed, the TriArmor
warranty will be void.

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Positive Closure Plate Installation (Figure 11)
The optional positive closure plate and gasket can be furnished on multi-cell units to allow
individual cells to be isolated for cleaning and routine maintenance. For PT2 Cooling
Towers, the plate ships loose inside the basin. To install the positive closure plate and
gasket, follow the steps below.
1. If installed, remove flat washers and wing nuts from the flume box on the interior of
Cell #2.
2. Position the neoprene gasket and positive closure plate over the flume box hardware
and fasten in place with 3/8” flat washers and wing nuts.
Figure 11. Positive Closure Plate Assembly Detail A
Figure 12a. Step 1 Figure 12b. Step 2 Figure 12c. Step 3
Lower Baffle
Side Baffle
1/4” Screw
Water Baffle Installation (Figures 12a, 12b, and 12c)
For multi-cell PT2 Cooling Towers (excluding Factory Mutual (FM) units), water
baffles join the interior basin sections to prevent leaks between modules. Install
the anchor bolts in all cells before installing the water baffles. To install the water
baffles, follow the steps below.
1. Slide the lower water baffle into place. The baffle is in its final position when
the end plates are in contact with the end wall flanges.
2. Orient the side baffles with the flanges facing out. Install the left and right
side water baffles by first aligning top notches and then sliding the bottom of
the baffle into place.
3. Secure the base of sides baffles with two #14 (1/4”) self-tapping screws in
each hole provided.
1”

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Unit Rigging & Assembly
Multi-Cell Unit Installation
Positive Closure Plate Installation
Water Baffle Installation
Multi-Cell FM Partition Panels
(Optional)
Motor Installation for
PT2-0709, PT2-0809, PT2-0812,
and PT2-0814
NOTE: All other PT2 models have
the fan motor mounted and belt
tensioned at the factory.
WARNING: Ensure that the fan
guard is properly installed prior to
commencing operation.
NOTICE: Do not remove tappers
from the fan section during the
installation of the external motor.
Removing tappers will cause the
interior mechanical system to fall.
Multi-Cell Factory Mutual (FM) Partition Panels (Optional)
Partition panels are provided for PT2 Cooling Towers with FM approval.
1. Set the base of the panel support into the upper basin flange while positioning the
support bracket as shown in Figure 13, Detail A. Slide the support bracket up behind
the corner gussets on the columns.
2. Secure the panel support to the support bracket with 5/16” self-tapping screws.
3. Secure the partition to the panel support using 5/16” self-tapping screws. The panel
should be flush with the top of the panel support.
Figure 14a. External Motor Mount Assembly Lift
1/2” washer
1/2” lock washer
1/2” nut
Eyelets
Motor Installation for PT2-0709, PT2-0809, PT2-0812, and PT2-0814
(Figure 14)
1. Attach the lifting strap to the motor base eyelets and remove the motor and the
motor base assembly from the basin. The motor assembly must remain vertical
to maintain proper alignment during installation.
2. Lift the external motor assembly into position next to the access door.
3. Attach the assembly to the unit using the six ½” studs, flatwashers, lock
washers, and nuts.
4. Install the powerband, check sheave alignment, and tension the power band.
For correct sheave alignment and tensioning specifications and procedures,
refer to the PT2 Operation & Maintenance Manual.
Detail A Figure 13. Installation of Partition Panels
Support Bracket
Panel Support
Partition A
Upper Basin Flange
Tapper
DO NOT
REMOVE
Figure 14b. External Motor Mount Assembly Pattern

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Fan Guard Installation
As standard, the fan guard ships installed on all PT2 units except for the PT2-1218,
which ships unmounted. However, due to height limitations on specific truck shipments,
the fan guard for other PT2 models may ship unmounted.
One-Piece Fan Guard
Mount the fan guard to the unit as illustrated in Figure 15, Detail A.
Figure 15. One-Piece Fan Guard Assembly
DANGER: Fan guard must be
securely in place before the cooling
tower is placed in operation. Never
step or walk on the fan guard.
Failure to follow these instructions
may result in serious injury or
death.
Detail A
3/8” Bolt
3/8”
Flatwasher
3/8”
Locknut
Fan Guard Clip

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Figure 16. Two-Piece Fan Guard Assembly
Fan Diameter X Y
9’ 10” 17”
10’ 10” 20”
11’ 10” 23”
Table 2. U-Bolt Location Dimensions for Two-Piece Fan Guard Fastening
Figure 15. One-Piece Fan Guard Assembly
Unit Rigging & Assembly
Fan Guard Installation
One-Piece Fan Guard
Two-Piece Fan Guard
DANGER: Fan guard must be
securely in place before the cooling
tower is placed in operation. Never
step or walk on the fan guard.
Failure to follow these instructions
may result in serious injury or
death.
Two-Piece Fan Guard
1. Using six U-bolt assemblies, fasten the two halves of the fan guard together as
illustrated in Figure 16, Detail B. Locate the U-bolt assemblies along the seam
between the two guard halves per the X and Y dimension provided in Table 2, which
are based on the diameter of the supplied fan.
2. Gradually tighten both nuts of the U-bolt assembly, alternating from one to the other,
until 20-25 ft-lb of torque is achieved.
3. Mount the fan guard to the unit as illustrated in Figure 16, Detail A for the ends of
the seam where the two guard halves join together, and Detail C for all other locations
around the fan guard perimeter.
Detail A Detail B Detail C
Y
X
3/8” Bolt
3/8” Bolt
U Bolt Assembly
3/8” Flatwasher
3/8” Locknut
3/8”
Flatwasher
3/8”
Locknut
Fan Guard Clip
Fan Guard Clip

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PT2 COOLING TOWER
Optional Accessory Installation
3
Side Outlet Depressed Sump Box (Optional)
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° 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 inside the cold water basin to remove any dirt or
moisture that may have accumulated during shipment.
2. Apply a layer of 1/8” x 1” butyl sealer tape around the opening in the basin over
the centerline of the holes. Do not stretch the sealer tape too thinly or overlap at the
corners. When it is necessary to splice the sealer tape, be sure to press the two ends
together to form a smooth continuous strip. Apply a second layer of sealer tape over
the first layer following the same procedure. Refer to Figure 17. The sealer tape needs
to be positioned between the sump box and the inside basin bottom.
3. Insert the sump box assembly into the opening in the cold water basin and attach it
to the basin with 3/8” x 1” bolt and nuts, flat washers, and lock washers as shown in
Figure 17, Detail A.
4. Place the suction strainer over the opening as shown in Figure 17.
Side Outlet
Depressed
Sump Box
Sump Suction
Strainer Standard
(Optional for Remote
Sump Applications)
Cold
Water
Basin
Butyl
Sealer
Tape
Lockwasher
& 3/8" Nut
3/8" X 1" Bolt
& Flatwasher
Butyl
Sealer Tape
Figure 17. Installation of Side Outlet Depressed Sump Box
Detail A

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Optional Accessory
Installation
Side Outlet Depressed Sump
Box
Bottom Water Outlet
Bottom Water Outlet (Optional)
1. The bottom connection seal, Figure 18, is typical for all bottom outlets, equalizers,
and bypasses. Flange mounting hardware and gasket to be supplied by others.
2. Bottom connection seal kit(s) ship in plastic tubs.
Cold
Water
Basin
Sump Suction
Strainer Standard
(Optional for Remote Sump
Applications)
Figure 18. Bottom Water Outlet
Detail A
2 1/4” OD Gasket
Backup Ring
Hardware
Provided by
Others
Gasket Provided by
Others

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Fan Cowl Extensions (Optional)
Each Fan cowl extension is 10 1/2” tall and up to four fan cowl extensions may be
installed.
1. Fasten the fan cowl extensions through the large diameter pre-punched holes using
the provided hardware as shown in Figure 19, Detail A.
2. Follow the “Fan Guard Installation” instructions on page 10 to install the fan guard.
Figure 19. Fan Cowl Extensions
Detail A
Discharge Sound Attenuation (Optional on PT2-0412 Only)
1. Verify the mounting guides (8 total) are factory installed.
2. Lower the attenuator assembly into position as shown in Figure 20.
3. Utilizing the supplied hardware, secure the attenuator assembly as shown in Figure
20, Detail A, to the mounting guides.
5’-6” Min.
Mounting Guides (8)
Attenuator Assembly
Detail A
Figure 20. Discharge Sound Attenuation
NOTES:
1. Fan cowl extensions can be
added at the time of order or as
an aftermarket item.
2. Discharge sound attenuation can
be added at the time of order or
as an aftermarket item.

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Optional Accessory
Installation
Fan Cowl Extensions
Discharge Sound
Attenuation
Motor Removal Davit
PT2-0709, PT2-0809, PT2-
0812, and PT2-0814
PT2-1009, PT2-1012,
PT2-1212, and PT2-1218
Motor Removal Davit (Optional)
PT2-0709, PT2-0809, PT2-0812, and PT2-0814 (see Figure 21a)
1. Remove the cover plate from the upper support channel.
2. Rotate the davit assembly to align the bolt head on the davit with the keyway in the
upper support channel and lower into position. The davit must pass through the upper
and lower support channel and rest on support base.
PT2-1009, PT2-1012, PT2-1212, PT2-1214, and PT2-1218 (see Figure 21b)
1. Verify the davit support is factory installed next to the access door. If not installed,
remove the bolts next to the access door (refer to Figure 21c). DO NOT REMOVE
TAPPERS. Secure the davit support by re-installing the bolts.
2. Rotate the davit assembly to align the bolt head on the davit with the keyway in the
upper support channel and lower into position. The davit must pass through the upper
and lower support channels and rest on the support base.
Cover Plate
(Remove)
Upper Support
Chanel
Lower Support
Chanel
Lower Into
Position
Figure 21a. Motor Removal Davit Installation for
PT2-0709, PT2-0809, PT2-0812, and PT2-0814
Upper Guide
Lower Guide
Support Base
Davit
Support
Davit
Assembly
Lower Into
Position
NOTE: The maximum weight load
capacity of the motor removal davit
is 630 lbs for PT2-0709, PT2-0809,
PT2-0812, and PT2-0814 units.
NOTE: The maximum weight load
capacity of the motor removal davit
is 830 lbs for PT2-1009, PT2-1012,
PT2-1212, PT2-1214, and PT2-1218
units.
Figure 21c. Davit Support Detail
Figure 21b. Motor Removal Davit Installation for
PT2-1009, PT2-1012, PT2-1212, PT2-1214, and PT2-1218
Bolt, Nut,
and Washer
Tapper
DO NOT
REMOVE
Access Door
NOTICE: Do not remove tappers
during installation of motor removal
davit support. Removing tappers
will cause the interior mechanical
system to fall.

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16 Figure 22. Inclined Access Ladders for PT2-0412
Upper Bracket
Ladder
Clamps
Diagonal
Brace
Lower Bracket
Detail B
Inclined Access Ladder (Optional)
Refer to Figures 22 to 24 for your particular unit.
1. Install the upper bracket as shown in Figures 22 to 24, Detail A. Depending on the
unit, this bracket might be factory installed.
2. Install the lower bracket(s) in the two outermost holes in adaptor channel as shown in
Figures 22 to 24, Detail B.
3. For PT2-1009, PT2-1012, PT2-1212, and PT2-1218 units, install the center adapter
and bracket as shown in Figure 24, Detail D. To install, fasten the center bracket to
the adapter, but do not tighten the fasteners. The bracket flanges should face toward
the unit end wall while the adapter is oriented with the holes positioned on top.
Capture down break on channel between the bracket and adapter.
4. Do not tighten the fasteners until the ladder is in position.
5. Position the ladder on the upper bracket and fasten in place.
6. Secure the ladder to the lower bracket(s) and the center bracket (for PT2-1012,
PT2-1212, and PT2-1218 units) utilizing the ladder clamps provided.
7. Loosely fasten the diagonal braces of the lower support assembly into position with the
ladder clamps, as shown in Figures 22 to 24, Detail B and Detail C.
8. Adjust the ladder clamps on the diagonal brace vertically to ensure that ladder(s) are
perpendicular to unit and tighten outer ladder clamps.
9. Check and tighten all remaining ladder fasteners before using the ladder(s).
NOTES:
1. Platforms, ladders, and safety
cages can be added at the time
of order or as an aftermarket
item.
2. Safety gates are provided
for all handrail openings. All
components are designed to
meet OSHA requirements.
Detail A
Detail C

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17
Optional Accessory
Installation
Inclined Access Ladder
Figure 24. Inclined Access Ladders for
PT2-1009, PT2-1012, PT2-1212, and PT2-1218
Detail A
Detail D
Upper Bracket
See Details B and C in Figure 22
Center Bracket
Adapter
Figure 23. Inclined Access Ladder for
PT2-0709, PT2-0809, and PT2-0812
Detail A
Upper Bracket
See Details B and C in Figure 22

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18
Mechanical Access Platform (Optional)
Refer to Figures 25 to 33 on pages 18 to 24 for your unit platform assembly.
1. Lift the hang-on module(s) into place by placing the hangers into the notches at the
top of the unit. Secure the module(s) to the unit using 3/8” bolts provided. See Detail
A(Figures 25 to 33).
2. Slide the platform clamps behind the panel flanges and secure to platform. See
Details B and C(Figures 25 to 33).
3. Secure the adjustable extension to the flange at the top of the lower section as shown
in Detail D (Figures 25 to 33).
4. If applicable, lift the bridge section(s) between the mounted hang-on modules and
lower into position so that it rests on support channels. Fasten the bridge section(s) to
the support chancels at 4 places using 3/8” x 1 1/4” hardware supplied. See Detail E
(Figures 26, 27, 29, 30, 31, 32, and 33).
Detail A
Figure 25. Mechanical Access Platform for One Cell Units (Except for PT2-1218)
Detail B Detail C Detail D
A
B
C
D
Hanger