Rigging and Assembly Instructions - Surplus Group Steel Support ... structural practices. ......

Bulletin 142Y

Rigging and Assembly Instructions

10’ & 12’ WIDE AT/UT/USSINDUCED DRAFT COOLING TOWERS

EVAPCO, Inc.North American HeadquartersP.O. Box 1300Westminster, MD 21158 USAPhone: 410-756-2600Fax: 410-756-6450E-mail: [email protected]

EVAPCO East5151 Allendale LaneTaneytown, MD 21787 USAPhone: 410-756-2600Fax: 410-756-6450E-mail: [email protected]

EVAPCO Midwest1723 York RoadGreenup, IL 62428 USAPhone: 217-923-3431Fax: 217-923-3300E-mail: [email protected]

EVAPCO West1900 West Almond AvenueMadera, CA 93637 USAPhone: 559-673-2207Fax: 559-673-2378E-mail: [email protected]

EVAPCO Iowa925 Quality DriveLake View, IA 51450 USAPhone: 712-657-3223Fax: 712-657-3226

EVAPCO IowaSales & Engineering1234 Brady BoulevardOwatonna, MN 55060 USAPhone: 507-446-8005Fax: 507-446-8239E-mail: [email protected]

Refrigeration Valves & Systems CorporationA wholly owned subsidiary of EVAPCO, Inc.1520 Crosswind Dr.Bryan, TX 77808 USAPhone: 979-778-0095Fax: 979-778-0030E-mail: [email protected]

McCormack Coil Company, Inc.A wholly owned subsidiary of EVAPCO, Inc.P.O. Box 17276333 S.W. Lakeview BoulevardLake Oswego, OR 97035 USAPhone: 503-639-2137Fax: 503-639-1800E-mail: [email protected]

EvapTech, Inc.A wholly owned subsidiary of EVAPCO, Inc.8331 Nieman RoadLenexa, KS 66214 USAPhone: 913-322-5165Fax: 913-322-5166E-mail: [email protected]

Tower Components, Inc.A wholly owned subsidiary of EVAPCO, Inc.5960 US HWY 64ERamseur, NC 27316Phone: 336-824-2102Fax: 336-824-2190E-mail: [email protected]

EVAPCO Newton701 East Jourdan StreetNewton, IL 62448Phone: 618-783-3433Fax: 618-783-3499E-mail: [email protected]

EVAPCO Europe, N.V.European HeadquartersIndustrieterrein Oost 40103700 Tongeren, BelgiumPhone: (32) 12-395029Fax: (32) 12-238527E-mail: [email protected]

EVAPCO Europe, S.r.l.Via Ciro Menotti 10I-20017 Passirana di RhoMilan, ItalyPhone: (39) 02-939-9041Fax: (39) 02-935-00840E-mail: [email protected]

EVAPCO Europe, S.r.l.Via Dosso 223020 Piateda Sondrio, Italy

EVAPCO Europe, GmbHBovert 22D-40670 Meerbusch, GermanyPhone: (49) 2159-69560Fax: (49) 2159-695611E-mail: [email protected]

EVAPCO S.A. (Pty.) Ltd.A licensed manufacturer of Evapco, Inc.18 Quality RoadIsando 1600Republic of South AfricaPhone: (27) 11-392-6630Fax: (27) 11-392-6615E-mail: [email protected]

Tiba Engineering Industries Co.A licensed manufacturer of Evapco, Inc.5 Al Nasr Road StreetNasr CityCairo, EgyptPhone: (20)2-290-7483/(20)2-291-3610Fax: (20)2-404-4667/(20)2-290-0892E-mail: [email protected]

EVAPCO ChinaAsia/Pacific Headquarters1159 Luoning Rd. Baoshan Industrial ZoneShanghai, P. R. ChinaPost Code: 200949Phone: (86) 21-6687-7786Fax: (86) 21-6687-7008E-mail: [email protected]

EVAPCO (Shanghai) Refrigeration Equipment Co., Ltd1159 Luoning Rd. Baoshan Industrial ZoneShanghai, P. R. ChinaPost Code: 200949Phone: (86) 21-6687-7786Fax: (86) 21-6687-7008E-mail: [email protected]

Aqua-Cool Towers (Pty.) Ltd.A licensed manufacturer of Evapco, Inc.34-42 Melbourne St.P.O. Box 436Riverstone, N.S.W. Australia 2765Phone: (61) 29-627-3322Fax: (61) 29-627-1715E-mail: [email protected]

EvapTech Asia Pacific sdn. BhdA wholly owned subsidiary of EvapTech, Inc.IOI Business Park, 2/F Unit 21 Persiaran Puchong Jaya Selatan Bandar Puchong Jaya,47170 Puchong Selangor, MalaysiaPhone: +(60-3) 8070 7255Fax: +(60-3) 8070 5731E-mail: [email protected]

EVAPCO North America

EVAPCO, Inc. - World Headquarters & Research/Development Center

EVAPCO Europe EVAPCO Asia/Pacific

EVAPCO, Inc. P.O. Box 1300 Westminster, MD 21158 USAPhone: 410-756-2600 Fax: 410-756-6450 E-mail: [email protected]

Cert no. BV-COC-080211

AT/UT/USS Cooling Towers

Method of ShipmentModels 110-112 through 312-960 are shipped withthe top section(s) separate from the bottom section(s).These sections have mating flanges and will join together ina waterproof joint when sealed and bolted together asdescribed in the following instructions. Miscellaneous items,such as sealer tape,materials, are packaged and placed inside the pan forshipment. A list of these items is included on Page 8. Forunits consisting of multiple cells, drip channels and splashguards will ship loose in the basin for field installation.

StorageDo not place tarps or other coverings over the top of theunits if the units are to be stored before installation.Excessive heat can build up if the units are covered,causing possible damage to the PVC eliminators, PVClouvers, or PVC fill.

Structural Steel SupportTwo structural “I” beams running the length of the unit areall that is required for support of the units. These beamsshould be located underneath the outer flanges of the unit(see Figure 1). Mounting holes, 3/4” in diameter, are locatedin the bottom flange of the unit to provide for bolting it to thestructural steel (see certified print for exact bolt holelocation). Bolt the bottom section to the steel support beforerigging the top section.

Beams should be sized in accordance with acceptedstructural practices. Maximum deflection of the beam underthe unit to be 1/360 of the unit length, not to exceed 1/2”.Deflection may be calculated by using 55% of the operatingweight as a uniform load on each beam (see certified printfor operating weight).

The supporting “I” beams should be level before setting theunit. Do not level the unit by shimming between the bottomflange and the beams as this will not provide properlongitudinal support.

Support beams and anchor bolts are to be furnished byothers. Always refer to certified print for unit weights,dimensions and technical data.

2

Rigging Bottom SectionLifting Bottom SectionLifting devices are located in the upper corners of the bottomsection for lifting and final positioning purposes as shown inFigure 2. The hook of the crane must be a minimumdimension of “H” above the top of the section being lifted toprevent undue strain on the lifting devices.See Table 1 for the minimum “H” dimension. These liftingdevices should not be used for extended lifts or where anyhazard exists unless safety slings are employed under thesection. (See “Extended Lifts” on page 5 for properarrangement.) Bolt the bottom section to the steel supportbefore rigging the top section.

UNIT NO. MIN. H

15 Feet

17 Feet

19 Feet

21 Feet

15 Feet

17 Feet

19 Feet

15 Feet

17 Feet

19 Feet

21 Feet

Table 1 - Minimum H Dimension for Bottom Sections.

Figure 1 - Structural Steel Support.

IntroductionThank you for purchasing your EVAPCO cooling tower. This manual will provide instructions for installation of the coolingtower. If you have purchased a model UT cooling tower or USSwith the Super Low Sound Fan option, please be sure to payattention to the proper rigging instructions for that special optionenclosed herein. If any questions arise during the installation, please contact your local EVAPCO representative or us directlyat our Global Headquarters location.

1110-112 to 110-912 &

110-118 to 110-918 &

210-124 to 210-924 &

210-136 to 210-936 &

310-136 to 310-936 &

310-154 to 310-954 &

12-012 to 112-912

112-314 to 112-914

112-018 to 112-918

112-520 to 112-920

212-024 to 212-924

212-128 to 212-928

212-036 to 212-936

312-036 to 312-936

312-042 to 312-942

312-054 to 312-954

312-260 to 312-960

International Building Code ProvisionsThe International Building Code (IBC) is a comprehensive set of regulations addressing the structural design and installation requirements for building systems – including HVAC and indus-trial refrigeration equipment. As of June 2008, all 50 states plus Washington D.C. have adopted the International Building Code. The code provisions require that evaporative cooling equipment and all other components permanently installed on a structure must meet the same seismic design criteria as the building. The AT/UT/USS Series of Open Cooling Towers are IBC 2006 compliant up to 1g with standard construction and up to 5.12g with additional structural modifications.

All items attached to the Evapco AT/UT/USS cooling tower must be independently reviewed and isolated to meet applicable wind and seismic loads. This includes piping, ductwork, conduit, and electrical connections. These items must be flexibly attached to the Evapco unit so as not to transmit additional loads to the equipment as a result of seismic or wind forces.

self-tapping screws and any other required

FOR EXTENDED STORAGE BEYOND SIX (6) MONTHS ROTATE THE FAN AND FAN MOTOR SHAFT(S) MONTHLY. ALSO, THE FAN SHAFT BEAR-INGS SHOULD BE PURGED AND REGREASED PRIOR TO START-UP.


3

Joining Multi-Cell UnitsBottom Sections - Models 210-124 through312-960On models 210-124 through 212-936, the twobottom sections are shipped separately and are furnishedwith a connecting equalizer flume between them. On models310-136 through 312-960 the three bottom sectionsare shipped separately and are furnished with twoconnecting equalizer flumes between them. In addition to theequalizer flumes, these units are provided with drip channelsand splash guards to keep water from exiting between thecells. 10’&12’ wide units have one horizontal drip channeland two vertical splash guards (one for each side)per flume box. The equalizer flume is factory installed on onesection for field connection to the other. It is important toconnect the equalizer flume to balance the water level in thepans for proper pump suction operation. The followingprocedures are to be performed in sequence.

1. Install the bottom section with the factory installed flume box on it as described earlier.

2. Clean the flanges on the equalizer flume on the end to be field connected. Apply a layer of sealer tape on the flangecentered between the hole centers and the outside edge.Remove paper backing strip from the sealer tape (seeFigure 3).

3. Clean the mating surface of the equalizer flume openingof any dirt, grease or moisture.

4. Rig the second bottom section adjacent to the equalizer flume on the steel support as shown in Figure 4.

5. Align the bolt holes in the equalizer flume and equalizeropening with drift pins (drift pins shall be provided byothers) while drawing the second bottom section against

the flanged connection.

H

Figure 2 - Bottom Section

6. Install 3/8” bolts, nuts and washers in every hole around the equalizer opening and tighten.

7. Bolt the second bottom section to the steel support.

8. Remove the 1/4” bolts which hold the drip channelretaining clips to the end panel. Place the drip channelover the adjoining pan section flanges. Turn around theretaining clips and re-install them using the samehardware. (See Figure 5)

9. Place the vertical splash guard in the bend of the verticalsupports. On galvanized units, attach the vertical splashguard using 5/16” self-tapping screws. On stainless steelunits, attach the vertical splash guard using 5/16”stainless steel nuts and bolts. (See Figure 3)

DRIP CHANNEL

RETAINING CLIP

VERTICAL SPLASH GUARD

FLUME BOX

SEALER TAPE

Figure 3 - Equalizer Flume Connection, Models 210-124 through 312-960.

Figure 4 - Equalizer Flume Rigging Detail. Models 210-124 through 212-936 have two bottom sections andone equalizer flume. Models 310-136 through 312-960have three bottom sections and two equalizer flumes.


Application of Sealer TapeOnce the bottom section has been set on the supportingsteel and bolted in place, the top flanges should be wipeddown to remove any dirt or moisture. Sealer Tape should beplaced over the mounting hole centerline on the sideflanges. Apply two strips of sealer tape, one partiallyoverlapping the other, on the end flanges.

The sealer tape should overlap on the corners as shown inFigure 7. Do not splice the sealer tape along the end flangesand preferably not on the side flanges if it can be avoided.Always remove the paper backing from the sealer tape.

Figure 7 - Sealer tape on flange of Bottom Section.

Models 210-124 through 312-960 have two ormore top sections. In these cases, sealer tape must beapplied to all internal flanges as shown in Figure 8.

Figure 8 - Sealer Tape Dmore Top Sections.

Optional Equalizer Blank-Off Plate For AllMulti-Cell UnitsAn accessory is available to isolate the bottom sections forindividual cell operation, periodic cleaning or maintenance.This optional equalizer blank-off plate is factory installed onthe equalizer flume inside of the pan and secured by wingnuts (See Figure 6).

For units not requiring the blank-off plate under normaloperating conditions, remove the wing nuts, washers, plateand gasket. Reinstall washers and wing nuts for proper leak-free operation of the flume.

Figure 6 - Optional Blank-Off Plate on the Equalizer Flume.

4

2 OVERLAPPING LAYERS OF SEALER TAPEON THE ENDS

END

SIDE

1 LAYER OF SEALER TAPE CENTEREDOVER THE MOUNTING HOLES

Figure 5 - Drip Channel Installation.

Tappers (Galvanized) orStainless Steel Bolts (Stainless)

DripChannel

RetainingClip

End Panel

etail for Center Joint of Units with two or

TAPE OVER

SEALER TAPE

OVERLAP SEALER TAPE


Figure 10 - Proper Rigging Method for Extended Lifts.

5

A

BottomSection

Figure 9 - Top Section(s).

Top Section“U” bolts are provided in the four corners of the top sectionfor lifting and final positioning (See Figure 9). The hook ofthe crane must be a minimum dimension “H” above the topsection being lifted to prevent undue strain on the “U” bolts.See Table 2 for the minimum “H” dimension.

Table 2 -Minimum H Dimension for Top Sections.

UNIT NO.

12 Feet

13

14

15

12

13

14

12

13

14

15

Super Lo wSo und Fan

15

17

19

21

15

17

19

15

17

19

21

StandardFan

1110-112 to 110-912 &

110-118 to 110-918 &

210-124 to 210-924 &

210-136 to 210-936 &

310-136 to 310-936 &

310-154 to 310-954 &

12-012 to 11 2-912

112-314 to 11 2-914

112-018 to 11 2-918

112-520 to 11 2-920

212-024 to 212-924

212-128 to 21 2-928

212-036 to 212-936

312-036 to 312-936

312-042 to 312-942

312-054 to 312-954

312-260 to 312-960

Extended LiftsImportant: The lifting devices and “U” bolts should beused for final positioning only and for lifting where nodanger exists. If they are used for extended lifts, safetyslings should be provided under the sections.

The preferred method for extended lifts is to use slingsunder the unit (see Figure 10). Spreader bars shouldalways be used between the cables at the top of the sectionto prevent damage to the upper flanges or fan cylinders.

AT/UT/USS

AT/UT/USSTop Section

Feet

Feet

Feet

Feet

Feet

Feet

Feet

Feet

Feet

Feet

Feet

Feet

Feet

Feet

Feet

Feet

Feet

Feet

Feet

Feet

Feet


6

Fan Sections Shipped Seperate From Casing Sections

F

Table 3

igure 11 - Three Point Rigging of the Fan Section

Fan sections will be rigged as a three-point lift, two pick points are the U-bolts on the fan deck and the third is the lifting ear on the mechanical equipment support (see Figure 11). The hook of the crane must be a minimum dimension “H” above the top section being lifted to prevent undue strain on the “U” bolts. See Table 3 for the minimum “H” dimension.

Casing sections will be rigged as a four-point lift. The pick points will be the four lifting points as shown on Figure 12.The hook of the crane must be a minimum dimension “H” above the top section being lifted to prevent undue strain on the “U” bolts. See Table 4 for the minimum “H” dimension.

After rigging, the installer will have to tapper or bolt the end panels of the fan section to the end panels of the casing sections as well as all the side panel flanges, a task which is currently not required because it is a factory assembled. The fan screen will also have to be replaced and secured after rigging.

Table 4

Figure 12 - Four Point Rigging of the Tower Casing Section with Added Ears

L H (STD) H (SLSF)

12’ 12’ 15”

14’ 13’ 17”

18’ 14’ 19’

20’ 15’ 21’

L H

12’ 12’

14’ 14’

18’ 17’

20’ 18’

H

L


7

Figure 15 - Wire Clip Arrangement.

Figure 16 - Wire Clip Spacing.

Assembly of the Top Section to the BottomSectionBefore assembling the top section to the bottom section,remove any loose parts shipped in the pan.

Wipe the flanges on the bottom of the top section. Check tosee that the water distribution connection on the top sectionis in the correct position relative to the bottom section (seecertified unit drawing). Units are also provided with matchmarkings on each section (i.e. A1 of bottom section shouldmatch up with A1 of top section).

Lower the top section to within several inches of the bottomsection making sure the two sections do not touch and thesealer is not disturbed. Fasten all four corners. Install theremaining fasteners, working from the corners toward thecenter. Fasteners must be installed in every hole on the sideflange. None are required on the end flanges. Galvanized

units will use 1/2” nuts and bolts.

Figure 13 - Mating Upper Section to Bottom Section.

Caution: 1210’ and ’ wide units cannot berigged fully assembled.

Mounting Fan ScreensIn certain situations some units may be shipped with thefan screens in the basin. Under these circumstances usethe following procedures to mount the fan screen on thedischarge cylinder.WARNING: DO NOT WALK ON THE FAN SCREENS ATANY TIME!

Models 110-112 through 112-912 single cell towers,210-124 through 212-924 two-cell towers and,310-136 through 312-936 three cell towers

1. Place both halves of the fan screen on top of thedischarge cylinder. Each half will be tagged to matchmarkings on the cylinder. Align the eyelets of the fanscreen with the holes that can be found on theperimeter of the discharge cylinder.

2. At each hole, attach the fan screen to the dischargecylinder as shown in Figure 14.

3. Join the two screen halves with wire clips (Figure 15). There should be 4 wire clips on each side of the fan

screen. Space the wire clips evenly across the radius of the fan screen as shown in Figure 16.

Figure 14 - Attachment of Fan Screen to DischargeCylinder.

and stainless steelSee Figure 11.

NOTE: Drift pins provided in rigging box to assist with alignment.

NOTE: 1/2” stainless steel nuts and bolts are used on skinless steel models


8

Optional Motor & Gearbox DavitAn accessory is available to aid in the removal of fan motorsand gear boxes. The assembly consists of a davit and amounting base that is to be attached to the side of the unitnext to the access door. (Figure 18). Both of these itemswill ship in the unit’s basin. On multiple cell units, there will bea mounting base on each cell. Use the following procedure toinstall the mounting base.

Figure 18 - Dual Point Davit Arrangement.

Figure 19 - Mounting Base Installation.

Models 112-314 through 112-920 single cell towers,212-128 through 212-936, two cell towers and312-042 through 312-960 three cell towers.On these models, the fan screen is supported fromunderneath by an “X” shaped support frame.

1. Set the support frame across the top of the dischargecylinder. (See Figure 17).

2. Place both halves of the fan screen on top of thesupport frame. Each half will be tagged to matchmarkings on the cylinder. Align the eyelets of the fanscreen with the holes on the cylinder perimeter.

3. Join the two screen halves with wire clips (See Figure15). There should be 4 clips on either side of the fanscreen. Space them evenly as shown in Figure 16.

4. At each hole, attach the fan screen to the dischargecylinder as shown in Figure 14. At the four points wherethe support frame meets the cylinder, bolt the supportframe to the cylinder together with the fan screen.

Figure 17 - Support Frame Installation.

0 18 5 0

0 22 6 0

0 26 6 0

0 30 7 0

26 36 10 0

26 44 12 0

26 52 12 0

52 54 15 0

52 66 18 0

52 78 18 0

52 90 21 0

Table 5 - Rigging hardware parts listNotes:1. 3/8 x 1” bolt, hex nut, lockwasher and flat washer.2. 1/2 x 1” bolt, (2) flat washers, and lock nut.

Rigging Hardware Parts ListThe following table 3 lists those parts which are shippedwith the unit(s) for field assembly and/or spare parts.

ModelNumber

SealerTape

NozzlesRiggingHard-ware2

FlumeHard-ware1

MOUNTING BRACKET

MOUNTING BRACKET

MOUNTING BRACKET

MOUNTING CHANNEL(SHIPS LOOSE)

M

110-112 to 110-912 & 112-912

112-314 to 112-914

110-118 to 110-918 & 112-018 to 112-918

112-520 to 112-920

210-124 to 210-924 & 212-024 to 212-924

212-128 to 212-928

210-136 to 210-936 & 212-036 to 212-936

310-136 to 310-936 & 312-036 to 312-93

312-042 to 312-942

310-154 to 310-954 & 312-054 to 312-95

312-260 to 312-960

1. Align the mounting channel with 3/8" bolts and flat washers to the mounting bracket (factory mounted).

2. Use 3/8" flat washers, lock washer and nuts to secure the mounting channel to the bracket (See Figure 19).


9

Assembly of Sloped LaddersWhen sloped ladders are supplied with a unit, they areshipped in the basin of the unit. One sloped ladder will beprovided for each cell. Assembly is identical for each cell.

Sloped ladders are attached at a minimum of three points.Taller units will be attached at four points. At each point ofattachment, the ladder will be fitted with a ladder bracketassembly. The ladder bracket assembly looks like a metalbox and is shown in detail (component #4) in Figure 20below. The upper two assembly brackets will be rigidlymounted to the ladder and are not adjustable. These twobracket define the slope of the ladder. The lower bracketsare adjustable.

Figure 21A - End View of Ladder Assembly

Figure 21B - Side View of Ladder Assembly

Figure 20 - Detail of Ladder, Ladder Bracket Assembly andMounting Channel

To install the ladder assembly, follow the steps outlined belowwhich refer to Figure 20:

1. Remove the ladder bracket mounting bolts (1) from theladder mounting channels (2) on pan and casing sections.

2. Loosen, but do not remove, the ladder bracket andassembly bolts (3).

3. Slide the ladder bracket assembly (4) over the laddermounting channels (2) located on the pan and casingsections. Do not remove the ladder bracket assembly (4)from the ladder.

4. Align the bolt holes and reinstall the ladder bracketmounting bolts (1) through the ladder bracket assembly andthe ladder mounting channels (2).

5. Tighten all bolts.

6. Tighten the adjusting screw (5) in the adjustable mountingbracket where applicable.

Note: Upper Section of Unit Must Be ProperlyOriented with Respect to Lower Section. All MountingBrackets Must be on Same Side of Unit. Refer toCertified Print For Proper Orientation.

9

Field Assembly of Working Platform and LadderThe working platform/ladder assemblies are shipped in the basin of the unit. In some cases they are shipped separately due to basin accessories that interfere with storage. The platform is partially assembled prior to shipment for minimal �eld assembly .

For 12’ wide units, there will be one working platform/ladder assembly per fan section.

The platform and ladder assembly should be attached after the unit is fully rigged following the instructions below.

AT/USS Cooling Towers

10

Field Assembly of Working Platform and LadderThe working platform/ladder assemblies are shipped in the basin of the unit. In some cases they are shipped separately due tobasin accessories that interfere with storage. The platform is partially assembled prior to shipment for minimal field assembly.

For 10’ and 12’ wide units, there will be one working platform/ladder assembly per fan section.

The platform and ladder assembly should be attached after the unit is fully rigged following the instructions below.


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11

Field Assembly of the Bottom Inlet Option

An option is available which locates the hot water inletconnection on the bottom of the unit. There is a bottominlet connection assembly that ships loose and requiresfield installation. Follow these assembly instructions tocomplete the bottom inlet connection installation.

Assembly Instructions (Refer to Figure 22.)(read all instructions before proceeding):1. Assemble the cooling tower in accordance with the

unit Rigging & Assembly Instructions.2. Find the bottom inlet connection assembly. The

assembly, consisting of the pipe spool, flexiblereinforced pipe connectors and pipe clamps, comesuninstalled, fastened securely inside the basinsection. See table 6 for details on the assembly.

3. Position the bottom inlet connection assembly overthe lower pipe nipple on the basin section. (seeFigure 22.)

4. Loosen the pipe clamps and slip the pipe connectordown over the lower pipe nipple.

5. Align the bottom inlet connection assembly with theupper pipe nipple on the unit fill section, loosen thepipe clamps and slip the connector up over the upperpipe nipple.

6. Tighten all pipe clamps. A ratchet wrench isrecommended.

7. Repeat for multi-cell units.

el Number

# Bottom

Inlet C

onnection A

ssemblies

Assem

bly Length (inches)

# Pipe C

onnectors

# Pipe Clam

ps

112-012 to 112-912 1 38-1/4 2 4

112-314 to 112-914 1 44-1/8 2 4

018 to 112-918 1 50-1/4 2 4

112-520 to 112-920 1 50-1/4 2 4

212-024 to 212-924 2 50-1/4 4 8

212-128 to 212-928 2 62-1/4 4 8

212-036 to 212-936 2 62-1/4 4 8

302-036 to 312-936 3 62-1/4 6 12

312-042 to 312-942 3 74-1/4 6 12

312-054 to 312-954 3 74-1/4 6 12312-260 to 312-960 3 74-1/4 6 12

Figure 22 - Bottom Inlet Pipe Spool Installation

Table 6 - Bottom Inlet Connection Assembly details

Upper Pipe Nipple

Upper Pipe Connectorand Pipe Clamps

Lower Pipe Connectorand Pipe Clamps

Lower Pipe Nipple

Bottom Inlet ConnectionAssembly


Model Number

110-112 to 110-912112-012 to 112-912110-118 to 110-918

1 38-1/4 2 4

112-314 to 112-914 1 44-1/8 2 4112-018 to 112-918 1 50-1/4 2 4112-520 to 112-920 1 50-1/4 2 4210-124 to 210-924212-024 to 212-924 210-136 to 210-936

2 50-1/4 4 8

212-128 to 212-928 2 62-1/4 4 8212-036 to 312-936 2 62-1/4 4 8

310-136 to 310-936312-036 to 312-936 310-154 to 310-954

3 62-1/4 6 12

312-042 to 312-942 3 74-1/4 6 12312-054 to 312-954 3 74-1/4 6 12312-260 to 312-960 3 74-1/4 6 12

# B

otto

m In

let

Con

nect

ion

Ass

embl

ies

Ass

embl

yLe

ngth

(inc

hes)

# Pi

peC

onne

ctor

s

# Pi

peC

lam

ps

1M/1008/YGS©2008 EVAPCO, Inc

12

General Information - Start-up & Maintenance

Start-up DetailsShipping Chocks and DebrisRemove any chocks that have been placed inside the unitfor shipping purposes. Be sure to remove the chocks frombetween the fan and fan screen. Clean all debris from thepan prior to start-up. Close and secure all access doors.

Belt Tensioning and Sheave AlignmentAT/UT/USS units are equipped with a factory mountedmotor on a sliding base with single bolt adjustment on eachmotor. Check the belt tension by applying moderate handpressure to the center of the belt, it should deflectapproximately 1/2”. As a final check, confirm the sheavealignment by laying a straight edge from sheave to sheave.There should be four point contact (see Figure 23). Adjust

NOTE: Do not operate the fans while the pump is off.Damage to the PVC fill can result during dry operation.Always start the water pumps first, with the fan motorsfollowing.

MaintenanceOnce the installation is complete and the unit is turned on, itis important that it be properly maintained. Maintenance isnot difficult or time-consuming but must be done regularly toassure full performance of the unit. Refer to themaintenance instructions enclosed with the unit for propermaintenance procedures.

Freeze ProtectionProper freeze protection must be provided if the unit islocated in a cold climate. Refer to maintenance instructionsas well as product bulletins for further information.

Figure 24 - Strainer Location.

ScreensProtective fan screens are provided across the top of the fancylinders of all models. Check and tighten all bolts.

Adjustment of Float ValveThe float valve should be adjusted to maintain the properwater level as specified in the maintenance instructions. Atstart-up, the pan should be filled to the overflow level.

During operation, the water level will drop to no more than 5”below the overflow. The water level can be checked duringoperation by opening the removable louver section at thevalve while the pump is running and the fans are off.

Starting SequenceBefore starting the unit, check that all access openings,safety screens and covers are in place. Then start the unitas outlined below:

1. Fill the pan to the overflow level.

2. Start the water pumps. Check the water flow to the unitby checking the spray water pressure at the water inlet.It should be the same as the pressure indicated on thecertified drawing.

3. Start the fans. Check the fans for proper rotation.Directional arrows are placed on the side of the fancylinder.

Bleed-off LineMake sure a bleed line and valve are installed on the pumpdischarge side of the system piping to a convenient drain.The bleed-off valve should be open. For installation details,see the “Maintenance Instructions Bulletin.”

StrainerCheck the strainer(s) in the pan to make sure they are in theproper location over the pump suction, alongside of theanticavitation hood. See Figure 24.

Figure 23 - Sheave Alignment Check.


the position of the motor sheave as necessary.

Rigging and Assembly Instructions - Surplus Group Steel Support ... structural practices. ......

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