EVAPCO AT Series Operation And Maintenance Instructions

EVAPCO AT Series Operation And Maintenance Instructions

Induced draft and forced draft cooling towers
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Maintenance Instructions

FOR EVAPCO INDUCED DRAFT AND FORCED
AT
For EVAPCO Authorized Parts and Service, Contact Your Local EVAPCO
Representative or the Local Mr. GoodTower
EVAPCO, Inc. — World Headquarters & Research/Development Center
P
HONE
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 East
5151 Allendale Lane
Taneytown, MD 21787 USA
Phone: 410-756-2600
Fax: 410-756-6450
E-mail: marketing@evapco.com
EVAPCO Midwest
1723 York Road
Greenup, IL 62428 USA
Phone: 217-923-3431
Fax: 217-923-3300
E-mail: evapcomw@evapcomw.com
EVAPCO West
1900 West Almond Avenue
Madera, CA 93637 USA
Phone: 559-673-2207
Fax: 559-673-2378
E-mail: contact@evapcowest.com
EVAPCO Iowa
925 Quality Drive
Lake View, IA 51450 USA
Phone: 712-657-3223
Fax: 712-657-3226
EVAPCO Iowa
Sales & Engineering
1234 Brady Boulevard
Owatonna, MN 55060 USA
Phone: 507-446-8005
Fax: 507-446-8239
E-mail: evapcomn@evapcomn.com
EVAPCO... S
Operation and
DRAFT COOLING TOWERS
USS
EVAPCO, Inc. • P.O. Box 1300 • Westminster, MD 21158 USA
: 410-756-2600 • F
: 410-756-6450 • E-
AX
Refrigeration Valves &
Systems Corporation
A wholly owned subsidiary of EVAPCO, Inc.
1520 Crosswind Dr.
Bryan, TX 77808 USA
Phone: 979-778-0095
Fax: 979-778-0030
E-mail: rvs@rvscorp.com
McCormack Coil Company, Inc.
A wholly owned subsidiary of EVAPCO, Inc.
P.O. Box 1727
6333 S.W. Lakeview Boulevard
Lake Oswego, OR 97035 USA
Phone: 503-639-2137
Fax: 503-639-1800
E-mail: mail@mmccoil.com
EvapTech, Inc.
A wholly owned subsidiary of EVAPCO, Inc.
8331 Nieman Road
Lenexa, KS 66214 USA
Phone: 913-322-5165
Fax: 913-322-5166
E-mail: marketing@evaptech.com
Tower Components, Inc.
A wholly owned subsidiary of EVAPCO, Inc.
5960 US HWY 64E
Ramseur, NC 27316
Phone: 336-824-2102
Fax: 336-824-2190
E-mail: mail@towercomponentsinc.com
EVAPCO Newton
701 East Jourdan Street
Newton, IL 62448 USA
Phone: 618-783-3433
Fax: 618-783-3499
E-mail: evapcomw@evapcomw.com
Cert no. BV-COC-080211
H
PECIALISTS IN
EAT
UT
LSTB
®
Service Provider
: marketing@evapco.com
MAIL
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 Europe, S.r.l.
Via Ciro Menotti 10
I-20017 Passirana di Rho
Milan, Italy
Phone: (39) 02-939-9041
Fax: (39) 02-935-00840
E-mail: evapcoeurope@evapco.it
EVAPCO Europe, S.r.l.
Via Dosso 2
23020 Piateda Sondrio, Italy
EVAPCO Europe, GmbH
Bovert 22
D-40670 Meerbusch, Germany
Phone: (49) 2159-69560
Fax: (49) 2159-695611
E-mail: info@evapco.de
Flex coil a/s
A subsidiary of EVAPCO, Inc.
Knøsgårdvej 115
DK-9440 Aabybro Denmark
Phone: (45) 9824 4999
Fax: (45) 9824 4990
E-mail: info@flexcoil.dk
EVAPCO S.A. (Pty.) Ltd.
A licensed manufacturer of EVAPCO, Inc.
18 Quality Road
Isando 1600
Republic of South Africa
Phone: (27) 11 392-6630
Fax: (27) 11-392-6615
E-mail: evapco@icon.co.za
Tiba Engineering Industries Co.
A licensed manufacturer of EVAPCO, Inc.
5 Al Nasr Road St.
Nasr City, Cairo, Egypt
Phone: (20) 2-290-7483/(20) 2-291-3610
Fax: (20) 2-404-4667/ (20) 2-290-0892
E-mail: manzgroup@tedata.net.eg
T
P
RANSFER
RODUCTS AND
Bulletin 113B
LPT
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
Evapco (Shanghai) Refrigeration
Equipment Co., Ltd.
1159 Louning 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
Beijing EVAPCO Refrigeration
Equipment Co., Ltd.
Yan Qi Industrial Development District
Huai Rou County
Beijing, P.R. China, Postal Code: 101407
Phone: (86) 10 6166-7238
Fax: (86) 10 6166-7395
E-mail: evapcobj@evapcochina.com
Evapco Australia (Pty.) Ltd.
A licensed manufacturer of EVAPCO, Inc.
34-42 Melbourne St.
P.O. Box 436
Riverstone, N.S.W. Australia 2765
Phone: (61) 29 627-3322
Fax: (61) 29 627-1715
E-mail: sales@evapco.com.au
EvapTech Asia Pacific Sdn. Bhd
A wholly owned subsidiary of EvapTech, Inc.
IOI Business Park, 2/F Unit 21
Persiaran Puchong Jaya Selatan
Bandar Puchong Jaya,
47170 Puchong, Selangor, Malaysia
Phone: (60-3) 8070 7255
Fax: (60-3) 8070 5731
E-mail: marketing-ap@evaptech.com
Visit EVAPCOʼs Website at:
http://www.evapco.com
S
.
ERVICES

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Summary of Contents for EVAPCO AT Series

  • Page 1: Maintenance Instructions

    For EVAPCO Authorized Parts and Service, Contact Your Local EVAPCO Representative or the Local Mr. GoodTower ® Service Provider EVAPCO, Inc. — World Headquarters & Research/Development Center EVAPCO, Inc. • P.O. Box 1300 • Westminster, MD 21158 USA : 410-756-2600 • F : 410-756-6450 • E- : marketing@evapco.com HONE...
  • Page 2: Table Of Contents

    Operation and Maintenance Instructions Table of Contents Introduction ................. 3 Safety Precautions .
  • Page 3: Introduction

    Become familiar with your evaporative cooling equipment. Refer to the isometric drawings located on pages 25-35 for information on the arrangement of components in your equipment. If you should require any additional information about the operation or maintenance of this equipment, contact your local EVAPCO representative. You may also visit www.evapco.com or www.mrgoodtower.com for more information.
  • Page 4: Initial And Seasonal Start-Up Checklist

    Initial and Seasonal Start-Up Checklist General 1. Verify that the overall installation reflects the requirements of the installation guidelines found in EVAPCO Bulletin 311 – Equipment Layout Manual. 2. For multi-speed fan motors, verify that 30 second or greater time delays are provided for speed changes when switching from high to low speed.
  • Page 5: Maintenance Checklist

    Operation and Maintenance Instructions MAINTENANCE CHECKLIST PROCEDURE Clean pan strainer – monthly or as needed Clean and flush pan** – quarterly or as needed Check bleed-off valve to make sure it is operative – monthly Check operating level in pan and adjust float valve if necessary –...
  • Page 6 Operation and Maintenance Instructions MAINTENANCE CHECKLIST OPTIONAL ACCESSORIES: Coupling/Shaft – Inspect flex elements and hardware for tightness, proper torque & crack/deterioration – monthly Heater Controller – Inspect controller and clean probe ends – quarterly Heater – Inspect junction box for loose wiring and moisture –...
  • Page 7: Seasonal Shut-Down Checklist

    Fan Motor Bearings EVAPCO evaporative cooling units use either a T.E.A.O. (Totally Enclosed Air Over) or a T.E.F.C. (Totally Enclosed Fan Cooled) fan motor. These motors are built to “Cooling Tower Duty” specifications. They are supplied with permanently lubricated bearings and special moisture protection on the bearings, shaft and windings.
  • Page 8: Fan Belt Adjustment

    Refrig. Oil 3G ------------------ Table 2 - Sleeve Bearing Lubricants All bearings used on EVAPCO equipment are factory adjusted and self aligning. Do not disturb bearing alignment by tightening the sleeve bearing caps. Fan Belt Adjustment The fan belt tension should be checked at start up and again after the first 24 hours of operation to correct for any initial stretch. To properly adjust the belt tension, position the fan motor so that the fan belt will deflect approximately 1/2”...
  • Page 9 Operation and Maintenance Instructions On induced draft belt driven units provided with externally mounted motors (6, 8, 8.5, 12, 15 and 17 foot wide units), Figure 3, and LSTB forced draft units, Figure 4, both J-type adjustment bolts on the adjustable motor base should have an equal amount of exposed thread for proper sheave and belt alignment.
  • Page 10: Fan System Capacity Control

    Operation and Maintenance Instructions Figure 6 – LPT Motor Adjustment Direct drive fan units do not require any adjustment (4' Wide Induced Draft ICT Models Only). Fan System — Capacity Control There are several methods for capacity control of the evaporative cooling unit. Methods include: Fan motor cycling, the use of two speed motors and the use of variable frequency drives (VFDʼs).
  • Page 11: Variable Frequency Drives

    Applications using a VFD for capacity control must also use an inverter duty motor built in compliance with NEMA standard MG-1. This is an available option from EVAPCO. The standard fan motors supplied by EVAPCO are not intended for use with VFDʼs.
  • Page 12: Recirculated Water System Routine Maintenance

    Operation and Maintenance Instructions Recirculated Water System – Routine Maintenance Suction Strainer in Cold Water Basin The pan strainer should be removed and cleaned monthly or as often as necessary. The suction strainer is the first line of defense in keeping debris out of the system. Make certain that the strainer is properly located over the pump suction, alongside the anti- vortexing hood.
  • Page 13: Water Make Up Valve

    Pressurized Water Distribution Systems All EVAPCO cooling towers are supplied with wide orifice water diffusers. The water distribution system should be checked monthly to make sure it is operating properly. Always check the spray system with the pump on and the fans off (locked and tagged out).
  • Page 14 LSTB, LPT and LSTA models in Figure 10 and as shown in Figure 11 for AT, USS and UT models. The top of the EVAPCO logo on the nozzle is parallel with the top of the water distribution pipe.
  • Page 15: Drift Eliminator Orientation

    Operation and Maintenance Instructions Drift Eliminators Induced Draft Units (AT, USS, and UT Models) Orientation of the eliminator sections on induced draft units is not critical. Note though, that the eliminator sections must fit tightly together within the fan section of the unit. Forced Draft Units (LSTB, LPT and LSTA Models) The eliminator sections are constructed of PVC and are not designed to support the weight of a person or to be used as a work surface for any equipment or tools.
  • Page 16: Water Treatment And Water Chemistry Of The Recirculated Water System

    It is recommended that a qualified water treatment company be contacted to design a water treatment protocol specifically for equipment and location. Contact your local EVAPCO representative for assistance. Evaporative cooling equipment rejects heat by evaporating a portion of the recirculated water and discharging it into the atmosphere in the hot, saturated discharge air.
  • Page 17: Water Chemistry Parameters

    Operation and Maintenance Instructions Water Chemistry Parameters A proper water treatment program is an essential part of routine maintenance to ensure the safe operation and longevity of this unit. A water treatment company familiar with local water conditions should be consulted. Any water treatment system used in the unit must be compatible with the unitʼs materials of construction.
  • Page 18: Passivation Of Galvanized Steel

    It should be noted that not all white deposits found on galvanized steel surfaces are due to white rust. As a result, it is imperative to determine the inorganic content of the deposit. The deposits may be calcium based and not zinc based. For more information, please request a copy of EVAPCOʼs Engineering Bulletin 36 on White Rust.
  • Page 19: Use Of Soft Water

    Stainless steel is the most cost effective material of construction available to extend the life of an evaporative cooling unit. The stainless steel sheet material utilized by EVAPCO is Type 304 and Type 316 with a No. 2B unpolished finish. Type 304 stainless steel is a basic chromium-nickel austenitic stainless steel and is suitable for a wide range of applications.
  • Page 20: Cleaning Procedures For Stainless Steel

    For more information on cleaning stainless steel, please request a copy of EVAPCOʼS Engineering Bulletin 40. For more information on choosing the appropriate grade of stainless steel, please request a copy of EVAPCO's Engineering Bulletin 46. Cold Weather Operation EVAPCO counterflow evaporative cooling equipment is well suited to operate in cold weather conditions.
  • Page 21: Unit Accessories

    “bypass” the towerʼs water distribution system as a means of capacity control. EVAPCO recommends that the cooling tower bypass be installed in the condenser water piping system.
  • Page 22 It is very important to maintain close control of the cooling tower during winter operation. EVAPCO recommends that an absolute MINIMUM leaving water temperature of 42° F must be maintained; obviously, the higher the water temperature from the tower, the lower the potential for ice formation.
  • Page 23: Replacement Parts

    EVAPCO has replacement parts available for immediate shipment. Most orders ship within 24 hours from time of order! To order replacement parts, please contact your local EVAPCO representative or Mr. GoodTower Service Center. The EVAPCO representative with contact information is located on the unitʼs nameplate or can be found by visiting either www.evapco.com or www.mrgoodtower.com.
  • Page 24: Part Identification Drawings

    Operation and Maintenance Instructions AT/USS 4’ WIDE TOWERS FAN & FILL CASING SECTION FAN SCREEN FAN CYLINDER DRIFT ELIMINATORS ACCESS DOOR WATER INLET CONNECTION FAN MOTOR FILL PAN SECTION MAKE-UP VALVE WITH ADJUSTABLE FLOAT AIR INLET LOUVER MEDIA WATER OUTLET CONNECTION SUCTION HOOD &...
  • Page 25: At/Uss 6ʼ, 8ʼ & 8.5ʼ Wide Towers

    Operation and Maintenance Instructions AT/USS 6’, 8’ & 8.5’ WIDE TOWERS FAN & FILL CASING SECTION FAN SCREEN FAN SREEN SUPPORT BEARING SUPPORT FAN CYLINDER DRIFT ELIMINATORS SWING OUT MOTOR COVER TEFC FAN MOTOR FILL FAN MOTOR SHEAVE SPRAY BRANCH FAN BELT ACCESS DOOR PAN &...
  • Page 26: At/Uss 10ʼ, 12ʼ, & 14ʼ Wide Towers

    Operation and Maintenance Instructions AT/USS 10’, 12’, & 14’ Wide Towers FAN & FILL CASING SECTION FAN SCREEN FAN SCREEN SUPPORT MECHANICAL EQUIPMENT SUPPORT FAN CYLINDER DRIFT ELIMINATORS FILL SLIDING MOTOR BASE ALUMINUM FAN SHEAVE TEFC FAN MOTOR FAN BELT ACCESS DOOR WATER DISTRIBUTION SPRAY BRANCH...
  • Page 27: At/Uss 12ʼ, 15ʼ & 17ʼ Wide End Connection Towers

    Operation and Maintenance Instructions AT/USS 12’, 15’ & 17’ Wide End Connection Towers FAN & FILL CASING SECTION FAN SCREEN SUPPORT FAN SCREEN FAN CYLINDER BEARING SUPPORT DRIFT ELIMINATORS SPRAY BRANCH ACCESS DOOR SWING OUT MOTOR COVER TEFC FAN MOTOR WATER DISTRIBUTION HEADER BOX FAN MOTOR SHEAVE...
  • Page 28: At/Uss 20ʼ & 24ʼ Wide Towers

    Operation and Maintenance Instructions AT/USS 20’ & 24’ Wide Towers FAN & FILL CASING SECTION FAN SCREEN FAN SCREEN SUPPORT MECHANICAL EQUIPMENT SUPPORT FAN CYLINDER DRIFT ELIMINATORS FILL WATER DISTRIBUTION HEADER BOX SLIDING MOTOR BASE WATER INLET CONNECTION TEAO FAN MOTOR WATER DISTRIBUTION SPRAY BRANCH ACCESS DOOR ALUMINUM FAN SHEAVE...
  • Page 29: At/Uss 28ʼ Wide Towers

    Operation and Maintenance Instructions AT/USS 28’ Wide Towers FAN & FILL CASING SECTION FAN SCREEN SUPPORT FAN SCREEN MECHANICAL FAN CYLINDER EQUIPMENT SUPPORT DRIFT ELIMINATORS WATER INLET CONNECTION FILL SLIDING MOTOR BASE WATER DISTRIBUTION SPRAY BRANCH TEAO FAN MOTOR ALUMINUM FAN SHEAVE ACCESS DOOR FAN BELT PAN &...
  • Page 30: Ut 6ʼ, 7.5ʼ, 8ʼ & 8.5ʼ Wide Towers

    Operation and Maintenance Instructions UT 6’, 7.5’, 8’ & 8.5’ Wide Towers FAN & FILL CASING SECTION FAN SCREEN SUPPORT BEARING SUPPORT FAN SCREEN SUPER LOW SOUND FAN FAN CYLINDER DRIFT ELIMINATORS SWING OUT MOTOR COVER TEFC FAN MOTOR FILL FAN MOTOR SHEAVE SPRAY BRANCH FAN BELT...
  • Page 31: Ut 10ʼ, 12ʼ, & 14ʼ Wide Towers

    Operation and Maintenance Instructions UT 10’, 12’, & 14 Wide Towers FAN & FILL CASING SECTION FAN SCREEN SUPER LOW SOUND FAN MECHANICAL FAN SCREEN SUPPORT EQUIPMENT SUPPORT FAN CYLINDER DRIFT ELIMINATORS FILL SLIDING MOTOR BASE ALUMINUM FAN SHEAVE TEAO FAN MOTOR FAN BELT WATER DISTRIBUTION ACCESS DOOR...
  • Page 32: Ut 12ʼ, 15ʼ & 17ʼ Wide End Connection Towers

    Operation and Maintenance Instructions UT 12’, 15’ & 17’ Wide End Connection Towers FAN & FILL CASING SECTION FAN SCREEN FAN SCREEN SUPPORT BEARING SUPPORT FAN CYLINDER SUPER LOW SOUND FAN DRIFT ELIMINATORS SPRAY BRANCH ACCESS DOOR SWING OUT MOTOR COVER TEFC FAN MOTOR WATER DISTRIBUTION HEADER BOX...
  • Page 33: Ut 20ʼ & 24ʼ Wide Towers

    Operation and Maintenance Instructions UT 20’ & 24’ Wide Towers FAN & FILL CASING SECTION FAN SCREEN FAN SCREEN SUPPORT SUPER LOW SOUND FAN MECHANICAL EQUIPMENT SUPPORT FAN CYLINDER DRIFT ELIMINATORS FILL WATER DISTRIBUTION HEADER BOX SLIDING MOTOR BASE WATER INLET CONNECTION TEAO FAN MOTOR WATER DISTRIBUTION ACCESS DOOR...
  • Page 34: Ut 28ʼ Wide Towers

    Operation and Maintenance Instructions UT 28’ Wide Towers FAN & FILL CASING SECTION FAN SCREEN SUPPORT SUPER LOW SOUND FAN FAN SCREEN MECHANICAL EQUIPMENT SUPPORT FAN CYLINDER DRIFT ELIMINATORS WATER INLET CONNECTION FILL SLIDING MOTOR BASE WATER DISTRIBUTION TEAO FAN MOTOR SPRAY BRANCH ALUMINUM FAN SHEAVE ACCESS DOOR...
  • Page 35: Lpt Units

    Operation and Maintenance Instructions LPT Units FILL CASING SECTION DRIFT ELIMINATORS WATER DISTRIBUTION SPRAY BRANCH DRIFT ELIMINATOR SUPPORT CASING FILL SUPPORT CHANNEL FILL WATER INLET WATER DISTRIBUTION CONNECTION SPRAY BRANCH SUPPORT PAN SECTION FAN SHEAVE FAN HOUSING FAN BELT FAN WRAPPER SUCTION HOOD SUCTION STRAINER MOTOR ACCESS DOOR...
  • Page 36: Lsta 4ʼ Wide Units

    Operation and Maintenance Instructions LSTA – 4’ Wide Units FILL CASING SECTION DRIFT ELIMINATORS FILL SUPPORT CHANNEL FILL WATER INLET CONNECTION WATER DISTRIBUTION SPRAY BRANCH WATER DISTRIBUTION SPRAY BRANCH SUPPORT CASING PAN SECTION ACCESS DOOR MIGRATION BAFFLE WRAPPER MAKE-UP VALVE WITH ADJUSTABLE FLOAT SUCTION STRAINER BEARING...
  • Page 37: Lstb Units

    Operation and Maintenance Instructions LSTB Units FILL CASING SECTION DRIFT ELIMINATORS WATER DISTRIBUTION SPRAY BRANCH FILL WATER INLET CONNECTION FILL SUPPORT CHANNEL CASING WATER DISTRIBUTION SPRAY BRANCH SUPPORT PAN SECTION MIGRATION BAFFLE FAN SCREENS NOT SHOWN FOR CLARITY OUTLET HOOD & STRAINER WRAPPER ACCESS DOOR MOTOR BASE...
  • Page 38: Notes

    Operation and Maintenance Instructions Notes:...
  • Page 39 Operation and Maintenance Instructions Notes:...
  • Page 40 EVAPCO, Inc. • P.O. Box 1300 • Westminster, MD 21158 USA : 410-756-2600 • F : 410-756-6450 • E- : marketing@evapco.com HONE MAIL ©2010EVAPCO, Inc. 5M/0201/YGS Printed on recycled paper using soy-based ink...

This manual is also suitable for:

Uss seriesLstb seriesLpt seriesUt series

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