EVAPCO LS Series - User Manual

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Bulletin 122R-Metric

Rigging

and

Assembly Instructions

LS SERIES

FORCED DRAFT EVAPORATIVE CONDENSERS

AND CLOSED CIRCUIT COOLERS

For EVAPCO Authorized Parts and Service, Contact Your Local EVAPCO

Representative or the Local Mr. GoodTower

Service Provider

EVAPCO, Inc.

— World

Headquarters

& Research

Development Ce

EVAPCO, Inc. • P.O. Box 1300 • Westminster, MD 21158 USA

HONE: 410-756-2600 • FAX: 410-756-6450 • E-MAIL: marketing@evapco.com

EVAPCO

North

America

EVAPCO,

Inc.

World

Headquarters

P.O. Box 1300

Westminster, MD 21158 USA

Phone: 410-756-2600

Fax: 410-756-6450

E-mail: marketing@evapco.com

EVAPCO E

5151

Allendale La

ytow

MD 21787 USA

Phone:

410

756

2600

Fax:

410

756

6450

E-mail:

co.co

EVAPCO

dwe

1723 York

Greenup,

62428 USA

Phone:

217

923

3431

Fax:

217

923

3300

E-mail:

.co

EVAPCO

1900 West

Almond A

Madera,

CA 93637 USA

Phone:

559

673

2207

Fax:

559

673

2378

E-mail: co

ct@e

st.

EVAPCO I

owa

925

Quality

Dri

Lake View,

51450 USA

Phone:

712

657

3223

Fax:

712

657

3226

EVAPCO I

owa

Sales

& E

215 1st

Street,

P.O. Box

Medford,

MN 55049 USA

Phone:

507

446

8005

Fax:

507

446

8239

E-mail:

.co

Refrigeration

Systems

rpo

wholly owned

subsidiary

EVAPCO,

1520

ssw

Bryan, TX 77808 USA

Phone:

979

778

0095

Fax:

979

778

0030

E-mail:

rvs@rvsco

.co

McCormack

Coil

Company,

nc.

wholly owned

subsidiary

EVAPCO,

P.O. Box

1727

6333 S.W.

Lakeview

Lake

Oswego,

OR 97035 USA

Phone:

503

639

2137

Fax:

503

639

1800

E-mail:

mail@mmccoil.com

ch,

nc.

wholly owned

subsidiary

EVAPCO,

8331

Nieman

Lenexa,

KS 66214 USA

Phone:

913

322

5165

Fax:

913

322

5166

E-mail:

ch.co

ower

Components, I

nc.

wholly owned

subsidiary

EVAPCO,

5960 US HWY

mse

27316

Phone:

336

824

2102

Fax:

336

824

2190

E-mail:

pon

EVAPCO

ewto

701 East

Jourdan

Stre

Newton,

62448 USA

Phone:

618

783

3433

Fax:

618

783

3499

E-mail:

.co

EVAPCO

Europe

EVAPCO

Europe, N.V.

European

Headquarters

Industrieterrein Oost 4010

3700 Tongeren, Belgium

Phone: (32) 12-395029

Fax: (32) 12-238527

E-mail: evapco.europe@evapco.be

EVAPCO E

urop

Via Ciro

Menotti 10

20017

Passirana

Milan,

Phone:

(39)

939

9041

Fax: (39)

935

00840

E-mail:

co.

EVAPCO E

urop

Via Dosso

23020

Piateda Sondrio,

EVAPCO E

urop

D-40670

Meerbusch,

rma

Phone:

(49)

2159

69560

Fax: (49)

2159

695611

E-mail: i

co.

Flex coil

wholly owned subsidiary of

EVAPCO,

Knøsgårdvej 115

DK-9440

Aabybro

Phone:

(45) 9824

4999

Fax: (45) 9824

4990

E-mail: i

@fl

xco

EVAPCO S.A.

(Pty.)

licensed manufacturer of

EVAPCO,

Quality

ndo

1600

pub

lic of

South

Afri

Phone:

(27)

392

6630

Fax: (27)

392

6615

E-mail:

co.co.

ndu

licensed manufacturer of

EVAPCO,

5 El Nasr

Nasr City, Cairo,

EVAPCO

Asia/Pacific

EVAPCO

Asia/Pacific Headquarters

1159 Luoning Rd. Baoshan Industrial Zone

Shanghai, P. R. China, Postal Code: 200949

Phone: (86) 21-6687-7786

Fax: (86) 21-6687-7008

E-mail: marketing@evapcochina.com

pme

Co.,

1159

Louning

Rd.,

ndu

stri

Shanghai,

P.R. China,

Postal

Code:

200949

Phone:

(86)

6687

7786

Fax: (86)

6687

7008

E-mail:

coch

.co

Beijing

EVAPCO

fri

pme

Co.,

Yan Qi

ndu

stri

Development

stri

Huai Rou

oun

Beijing, P.R. China,

Postal

Code:

101407

Phone:

(86) 10

6166

7238

Fax: (86) 10

6166

7395

E-mail:

coch

.co

EVAPCO

Australia (Pty.)

34-42

Melbourne

P.O. Box

436

rsto

N.S.W.

Australia 2765

Phone:

(61) 2

9627

3322

Fax: (61) 2

9627

1715

E-mail:

s@e

co.co

Asia Pacific Sdn. Bhd

wholly owned

subsidiary

EvapTech,

IOI

Business Park, 2/F

Unit 20

Persiaran Puchong

Jaya

Puchong

ya,

47170

Puchong, Selangor,

ysi

Phone:

(60-3) 8070

7255

Fax: (60-3) 8070

5731

E-mail:

ch.co

EVAPCO...S

PECIALISTS IN

EAT

RODUCTS

AND

CES

Phone:

2 02

24022866

2 02

24044997

Fax: 2 02

24044667

2 02

24044668

E-mail:

EVAPCO

(Shanghai)

fri

Visit EVAPCOʼ s Website at:

http://www

.evapco.com

Need help?

Do you have a question about the EVAPCO LS Series and is the answer not in the manual?

Summary

International Building Code Provisions

Assembly of Coil Section to Pan;Fan Section

Optional Hood Section Installation

Optional Discharge Attenuation Section

Optional Intake Attenuation Section

Final Assembly and Start-up Details

Float Valve Adjustment

Adjust float valve for correct water level in the basin.

Fan Rotation Check

Verify fan rotation direction and motor current draw.

Pump Rotation Check

Confirm pump rotation direction after filling the basin.

This document outlines the rigging and assembly instructions for EVAPCO LS Series Forced Draft Evaporative Condensers and Closed Circuit Coolers. These units are specialized heat transfer products designed for industrial refrigeration and HVAC applications.

Function Description

The LS Series units are evaporative condensers and closed circuit coolers that facilitate heat transfer by evaporating water, thereby cooling a process fluid or condensing a refrigerant. They are designed for forced draft operation, meaning air is forced through the unit by fans. The units can be shipped either fully assembled (smaller units) or in sections (pan-fan section and coil section) for larger models, requiring on-site assembly. Optional components like discharge hoods, discharge attenuation, and intake attenuation can also be integrated.

Important Technical Specifications

Method of Shipment and Rigging: Units are shipped either fully assembled or with the top section(s) separate from the bottom section(s). Mating flanges are designed for a waterproof joint when sealed and bolted. Rigging involves using U-bolts or lift points provided on the pan-fan and coil sections. For extended lifts, safety slings and spreader bars are recommended to prevent damage to upper flanges.

Structural Steel Support: Two structural "I" beams running the length of the unit are required for support, positioned underneath the outer flanges. Mounting holes (19mm diameter) are located in the bottom flange for bolting to the structural steel. Beams should be level to within 1.5mm in 1m. Maximum beam deflection under the unit should be 1/360 of the unit length, not exceeding 13mm, calculated using 55% of the operating weight as a uniform load.

International Building Code (IBC) Provisions: The LS Series Coolers and Condensers are IBC 2006 compliant up to 1g (7kPa wind-load) with standard construction and up to 5.12g (7kPa wind-load) with additional structural modifications. All attached items (piping, ductwork, conduit, electrical connections) must be independently reviewed and isolated to meet applicable wind and seismic loads, requiring flexible attachment to the EVAPCO unit.

Rigging Dimensions (Minimum "H" Dimension for Pan/Fan Section): The minimum "H" dimension (vertical clearance for rigging) varies by unit footprint:

1.2 x 1.8m: 2.5m
1.2 x 2.7m: 3.1m
1.2 x 3.6m: 4.6m
1.2 x 5.4m: 5.8m
1.6 x 3.6m: 4.6m
1.6 x 5.4m: 5.8m
2.4 x 3.6m: 4.6m
2.4 x 5.4m: 5.8m
2.4 x 7.3m: 7.7m
2.4 x 11m: 11.6m
3 x 3.6m: 4.6m
3 x 5.4m: 5.8m
3 x 7.3m: 7.7m
3 x 11m: 11.6m

Rigging Dimensions (Minimum "H" Dimension for Coil Section): The minimum "H" dimension for coil sections also varies by unit footprint:

1.2 x 1.8m: 2.5m
1.2 x 2.7m: 3.1m
1.2 x 3.6m: 4.6m
1.2 x 5.4m: 5.8m
1.6 x 3.6m: 4.6m
1.6 x 5.4m: 5.8m
2.4 x 3.6m: 4.6m
2.4 x 5.4m: 5.8m
2.4 x 7.3m: 4.6m
2.4 x 11m: 5.8m
3 x 3.6m: 4.6m
3 x 5.4m: 5.8m
3 x 7.3m: 4.6m
3 x 11m: 5.8m

Rigging Dimensions (Minimum "H" Dimension for Complete Unit): For complete units, the minimum "H" dimension is:

1.2 x 1.8m: 2.5m
1.2 x 2.7m: 3.1m

Rigging Dimensions (Minimum "H" Dimension for Discharge Hoods/Attenuation and Intake Attenuation): These components share similar "H" dimensions to the coil sections, varying from 2.5m to 5.8m depending on the footprint.

Float Valve Adjustment: Pre-set at the factory, but requires checking after rigging. The float valve should be adjusted so the center of the float is 25mm below the center of the overflow connections when fully closed. Operating pressure range is between 140kPa and 340kPa.

Minimum Operating Level: The minimum operating water level varies by unit footprint:

1.2 x 1.8m, 1.2 x 2.7m, 1.2 x 3.6m, 1.2 x 5.4m, 1.6 x 3.6m, 1.6 x 5.4m: 3.4m
2.4 x 3.6m, 2.4 x 5.4m, 2.4 x 11m, 3 x 5.4m, 3 x 11m: 4.6m
2.4 x 7.3m, 3 x 3.6m, 3 x 7.3m: 3.7m

Usage Features

Assembly Process:

Pan/Fan Section Rigging: U-bolts or lift points are used for lifting and positioning. Units up to 5.4m long have 4 lift points; 7.3m and 2.4m x 11m units have 6 lift points; other 11m units have 8 lift points. Extended lifts require slings and spreader bars.
Sealer Tape Application: After the bottom section is bolted to the support steel, sealer tape is applied over the mounting hole centerline on side flanges, with two overlapping strips on end flanges. For units with two coil sections, tape is applied to all internal flanges.
Coil Section Rigging: U-bolts or lift points in the four corners (and center for larger units) are used. Eliminator sections should be removed before lifting. Extended lifts require slings and spreader bars.
Coil Section Assembly to Pan/Fan Section: Loose parts are removed from the pan. Flanges are wiped clean. The coil section is lowered onto the pan-fan section, guided by drift pins in mounting holes. Fasteners are installed from corners towards the center.
Complete Unit Rigging: For fully assembled units, U-bolts or lift points in the coil section below the eliminators are used. Extended lifts require slings and spreader bars.
Optional Hood/Attenuation Section Assembly: These sections are rigged separately using U-bolts. Sealer tape is applied to the top flanges of the coil section before lowering the hood/attenuation. Fasteners are installed in all four corners (and middle for 5.4m long hoods).
Motor Installation (1.2m and 1.6m wide models): Involves installing motor bases, pivot bolts, J-bolts, belts, and aligning sheaves. Belts should not be overtensioned, with approximately 13mm deflection at the center with moderate hand pressure. Motor guard is then fastened.
Final Assembly and Start-up: Remove shipping materials. Connect pump discharge line. Ensure bleed-off line and valve are properly installed and open. Check strainer. Protective air inlet screens are provided (bottom screens recommended for elevated units). Adjust float valve. Check fan and pump rotation.

Storage: Units should not be covered with tarps or other coverings if stored before installation to prevent excessive heat buildup and PVC eliminator damage. For extended storage (beyond six months), rotate fan and motor shafts monthly, and purge/regrease fan shaft bearings before start-up.

Freeze Protection: The simplest method is a remote sump, allowing water to drain back when the pump is off. If a remote sump is not used, pan heaters are available, but external water lines, pump, and piping up to the overflow level must be heat traced and insulated. Pan heaters only prevent freezing when fans are off. Units cannot be operated dry (fans on, pump off) unless the pan is completely drained.

Maintenance Features

Water Treatment: Proper water treatment is essential. Galvanized equipment should be passivated before startup to avoid white rust. Both spray water and process fluid in the coil must be maintained with a water treatment program for efficient operation and extended service life. EVAPCO's Engineering Bulletin 36 provides information on passivation and white rust, and the Operation and Maintenance Instructions detail recommended water chemistry.

General Maintenance: Regular maintenance is crucial for full performance. Refer to the operation and maintenance instructions supplied with the unit for specific procedures.