EVAPCO ATC-E Operation And Maintenance Instruction Manual
Induced draft and forced draft
closed circuit coolers and evaporative condensers
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Also See for ATC-E:
- Rigging and assembly instructions (24 pages) ,
- Maintenance instruction (21 pages) ,
- Operation and maintenance instruction (20 pages)
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OPERATION AND MAINTENANCE INSTRUCTIONS
Closed Circuit Coolers and Evaporative Condensers
ATC-E / eco-ATC
ATW / eco-ATW
EVAPCO, Inc. (World Headquarters) P.O. Box 1300, Westminster, Maryland 21158 USA
EVAPCO Europe
bvba
Heersterveldweg 19
Industrieterrein Oost
3700 Tongeren, Belgium
Phone: (32) 12 395029
Fax: (32) 12 238527
E-mail: evapco.europe@ evapco.be
EUROPEAN
For EVAPCO Induced Draft and Forced Draft
eco-ATWE
LSWA(-H) / LSCE
For EVAPCO Authorized Parts and Service,
Contact Your Local Mr. GoodTower
or the EVAPCO Plant Nearest You
www.evapco.eu
EVAPCO Products are Manufactured Worldwide
Phone (410) 756-2600 - Fax (410) 756-6450
EVAPCO Europe S.r.l.
Via Ciro Menotti 10
I-20017 Passirana di Rho
Milan, Italy
Phone: (39) 02 9399041
Fax: (39) 02 93500840
Email: evapcoeurope@evapco.it
LRW(-H) / LRC
Service Provider
®
EVAPCO Europe GmbH
Insterburger Straße, 18
D-40670 Meerbusch, Germany
Phone: (49) 2159-6956-0
Fax: (49) 2159-6956-11
Email: info@evapco.de
Bulletin 116-E Metric
ESWA
PMCQ
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Summary of Contents for EVAPCO ATC-E
- Page 1 Service Provider ® or the EVAPCO Plant Nearest You www.evapco.eu EVAPCO Products are Manufactured Worldwide EVAPCO, Inc. (World Headquarters) P.O. Box 1300, Westminster, Maryland 21158 USA Phone (410) 756-2600 - Fax (410) 756-6450 EVAPCO Europe EVAPCO Europe S.r.l. EVAPCO Europe GmbH...
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Page 2: Table Of Contents
Operation and Maintenance Instructions Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Safety Precautions / Remaining Risks . - Page 3 ATC-E, ATW, eco-ATC, eco-ATW 3 & 3,6 m Wide Units . . . . . . . . . . . . . . .
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Page 4: Introduction
. 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 .eu for more information . -
Page 5: Installation Precautions
WARNING: In order to avoid excessive pressure, proper safety valves should be foreseen in the cooling installation . These safety measures are not delivered by Evapco and are the responsibility of the customer/contractor . The application of these safety measures has to be evaluated for the cooling system as a whole and not limited to the partly completed machinery . -
Page 6: Terminology
Operation and Maintenance Instructions Terminology Throughout this manual, the terms “Induced Draft” and “Forced Draft” are used . Below is a list of EVAPCO Closed Circuit Cooler and Condenser products offerings and associated terminology . Induced Draft equipment includes the following Evapco Product Models: <... -
Page 7: International Building Code Provision
. 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 . - Page 8 15 . Closed hydronic systems connected to either a closed-circuit cooler or dry cooler should be pre-cleaned and flushed to remove debris, grease, flash rust, oil, and other suspended solids prior to operation . Evapco recommends the use of inhibitor chemistry or inhibited glycol to minimize corrosion and scale during normal operation .
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Page 9: Maintenance Checklist
Operation and Maintenance Instructions MAINTENANCE CHECKLIST PROCEDURE 1 . Clean pan strainer - monthly or as needed 2 . Clean and flush pan* - quarterly or as needed 3 . Check bleed-off valve to make sure it is operative - monthly 4 . - Page 10 Operation and Maintenance Instructions MAINTENANCE CHECKLIST (optional accessories) OPTIONAL ACCESSORIES: 1 . Heater – Inspect junction box for loose wiring and moisture – one month after start-up and semi-annually 2 . Heater – Inspect elements for scale build-up – quarterly 3 .
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Page 11: Seasonal Shut-Down Checklist
Operation and Maintenance Instructions Seasonal Shut-Down Checklist When the system is to be shut down for an extended period of time, the following services should be performed . The evaporative cooling unit cold water basin should be drained The cold water basin should be flushed and cleaned with the suction strainer screens in place . The suction strainer screens should be cleaned and re-installed . -
Page 12: Fan System
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 . The fan motor bearings for motors up to 30 kW are lubricated for the lifecycle of the bearings, higher motor powers require relubrication (please see motor manual for more detail) . -
Page 13: Fan Shaft Sleeve Bearings - (1,2 M Wide Ls Units Only)
Teresstic 220 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 . Oil drippage may result from over-oiling or from using too light of an oil . Should this condition persist with correct oiling, it is recommended that a heavier weight oil be used . -
Page 14: Air Inlet
Operation and Maintenance Instructions On induced draft belt driven units provided with externally mounted motors (2,3 m; 2,4 m and 4,8 m wide units), Figure 3, and LS Style 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 15: Fan System - Capacity Control
The type of motor, manufacturer of the VFD, motor lead lengths (between the motor and the VFD), conduit runs and grounding can dramatically affect the response and life of the motor . Select a high quality VFD that is compatible with Evapco fan motors . Many variables in the VFD configuration and installation can affect motor and VFD performance . -
Page 16: Sequence Of Operations / Guidelines For Multi-Fan Units With A Vfd During Peak Load
Operation and Maintenance Instructions Sequence of Operations / Guidelines for Multi-fan Units with a VFD during Peak Load For eco-ATW(E), see Sage /Sage control Panel O&M Both fan motors off – pump running on one cell Both fan motors off – pump running on both cells Both VFDs turn on at the manufacturer’s recommended minimum operating speed (20-25%) –... -
Page 17: Recirculated Water System - Routine Maintenance
Operation and Maintenance Instructions Recirculated Water System – Routine Maintenance Suction Strainer in Cold Water Basin The pan strainer as shown in Figures 8, 9, 10 and 11 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 . -
Page 18: Operating Level Of Water In Cold Water Basin
Operation and Maintenance Instructions Operating Level of Water in Cold Water Basin The operating level should be checked monthly to make sure the water level is correct . Refer to Table 3 for unit specific levels . Model Number Operating Level through 230 mm... -
Page 19: Drift Eliminators
Operation and Maintenance Instructions Drift Eliminators Check the drift eliminators quarterly to make sure the drift eliminators are still in the correct position and not clogged by any debris . If required after inspection, drift eliminators must be removed, cleaned and reinstalled correctly . On forced draft models, the worker must use personal precautions and adequate safety measures against the risk of a fall, in accordance with local regulations . -
Page 20: Bleed-Off Valve
. Coils Contact Evapco in case of damage to the pressure vessel . Do not affect the integrity of the pressure vessel without approval of Evapco . Evaporative Coil(s) Check coil surface periodically, but at least twice a year . -
Page 21: Water Chemistry Parameters
. Evapco does not recommend the routine use of acid due to the destructive consequences of improper feeding; however, if acid is used as part of the site specific treatment protocol, it should be pre-diluted prior to introduction into the cooling water and fed by automated equipment to an area of the system which ensures adequate mixing . -
Page 22: Gray Water And Reclaimed Water
. Prevailing winds can create icing conditions on the inlet louvers and fan screens adversely affecting airflow to the unit . For additional information on unit layout, please refer to EVAPCO’s Equipment Layout Manual- Bulletin 311 . Freeze Protection of Recirculating Water The simplest and most effective way of keeping the recirculated water from freezing is to use a remote sump . - Page 23 Operation and Maintenance Instructions Evaporative Condenser Closed Circuit Cooler Required Inlet Model Number Model Number Pressure (kPa) eco-ATC ATW, eco-ATW, eco-ATWE 165E 0,9 m & 1,2 m wide M170E M247E 2,3 x 2,6 m M208 M302 M203E M233E 2,4 x 2,7 m M252 M454 M252E...
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Page 24: Freeze Protection Of Closed Circuit Cooler Coils
Operation and Maintenance Instructions Freeze Protection of Closed Circuit Cooler Coils The simplest and most effective way of protecting the heat exchanger coil from freezing is to use an inhibited ethylene or propylene glycol anti-freeze . If this is not possible, an auxiliary heat load and minimum flow rate must be maintained on the coil at all times so that the water temperature does not drop below 10°C when the cooler is shut down . -
Page 25: Unit Accessories
. It is very important to maintain close control of the cooler or condenser during winter operation . EVAPCO recommends that an absolute MINIMUM leaving water temperature of 6°C must be maintained for cooler applications . The higher the leaving temperature from the cooler or condenser, the lower the potential for ice formation . -
Page 26: Forced Draft Unit Capacity Control
. The defrost cycle requires the use of two speed motors with reverse cycle starters or reversible variable frequency drives . All motors supplied by EVAPCO are capable of reverse operation . -
Page 27: Forced Draft Units
. However, low speed fan operation or variable frequency drives maintain a positive pressure in the unit which helps prevent ice formation on the fan drive components . For more information on cold weather operation, please request a copy of EVAPCO’s Engineering Bulletin 23 . Troubleshooting... - Page 28 Operation and Maintenance Instructions Problem Possible Cause Remedy Fan Noise Blade rubbing inside of Adjust cylinder to provide blade tip clearance . fan cylinder (induced draft models) Scaled Inlet Louvers on Improper water This is not necessarily an indication that there is something wrong with AT Units treatment, insufficient the unit, or with the water treatment .
- Page 29 . It is recommended that maintaining the finish of the insulation paint be a part of the standard maintenance program . If the insulation is cracking, see your local Evapco representative for further guidance . Electric Water Level The valve won’t open or...
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Page 30: Replacement Parts
The following pages contain exploded view drawings of all current Evapco closed circuit coolers and condensers . Please use these drawings to help identify the major parts of your unit . To order replacement parts, please contact your local EVAPCO representative or Mr . -
Page 31: Part Identification Drawings
Operation and Maintenance Instructions ATW & eco-ATW 0,9 m Wide Units FAN & COIL CASING SECTION FAN SCREEN FAN CYLINDER BELT GUARD TEFC FAN MOTOR WATER INLET CONNECTION DRIFT ELIMINATOR PUMP RISER PIPING COIL COIL CONNECTIONS PAN SECTION MAKE-UP VALVE WITH ADJUSTABLE FLOAT PUMP RISER PIPING AIR INLET LOUVER... -
Page 32: Atc-E, Atw, Eco-Atw 1,2 M Wide Units - 1 Fan
Operation and Maintenance Instructions ATC-E / ATW / eco-ATW 1,2 m Wide Units - 1 Fan FAN & COIL CASING SECTION FAN SCREEN FAN CYLINDER DRIFT ELIMINATOR BELT GUARD WATER INLET CONNECTION TEFC FAN MOTOR PUMP RISER PIPING COIL COIL CONNECTIONS... -
Page 33: Atc-E, Atw, Eco-Atw 1,2 M Wide Units - 2 Fans
Operation and Maintenance Instructions ATC-E / ATW / eco-ATW 1,2 m Wide Units - 2 Fans FAN & COIL CASING SECTION FAN SCREEN FAN CYLINDER BELT GUARD WATER INLET CONNECTION DRIFT ELIMINATOR TEFC FAN MOTOR PUMP RISER PIPING COIL PAN SECTION... -
Page 34: Atc-E, Atw, Eco-Atc, Eco-Atw 2,4 M Wide Units
Operation and Maintenance Instructions ATC-E, ATW, eco-ATC, eco-ATW 2,4 m Wide Units FAN & COIL CASING SECTION BEARING SUPPORT FAN SCREEN FAN SCREEN SUPPORT DRIFT ELIMINATORS FAN CYLINDER ACCESS DOOR SWING OUT MOTOR COVER TEFC FAN MOTOR PUMP RISER PIPING... -
Page 35: Atc-E, Atw, Eco-Atc, Eco-Atw 3 & 3,6 M Wide Units
Operation and Maintenance Instructions ATC-E, ATW, eco-ATC, eco-ATW 3 & 3,6 m Wide Units FAN & COIL CASING SECTION FAN SCREEN FAN SCREEN SUPPORT TEAO FAN MOTOR FAN CYLINDER SLIDING MOTOR BASE ACCESS DOOR MECHANICAL EQUIPMENT SUPPORT DRIFT ELIMINATORS COIL CONNECTIONS... -
Page 36: Eco-Atwe 2,4 M Wide
Operation and Maintenance Instructions eco-ATWE 2,4 m Wide Units FAN & COIL CASING SECTION PAN SECTION... -
Page 37: Eco-Atwe 3 M Wide
Operation and Maintenance Instructions eco-ATWE 3 m Wide Units FAN & COIL CASING SECTION PAN SECTION... -
Page 38: Eco-Atwe 3,6 M Wide
Operation and Maintenance Instructions eco-ATWE 3,6 m Wide Units FAN & COIL CASING SECTION PAN SECTION... -
Page 39: Eswa 2,4 M Wide Units
Operation and Maintenance Instructions ESWA 2,4 m Wide Units FAN & FILL CASING SECTION FAN SCREEN FAN SCREEN SUPPORT BEARING SUPPORT FAN CYLINDER FAN SHAFT BEARING DRIFT ELIMINATORS SWING OUT MOTOR COVER TEFC FAN MOTOR FILL FAN MOTOR SHEAVE FAN BELT SPRAY BRANCH ACCESS DOOR PAN SECTION... -
Page 40: Eswa 3,6 M Wide Units
Operation and Maintenance Instructions ESWA 3,6 m Wide Units FAN & FILL CASING SECTION FAN SCREEN FAN SCREEN SUPPORT MECHANICAL EQUIPMENT SUPPORT FAN CYLINDER DRIFT ELIMINATORS FILL ALUMINUM FAN SHEAVE SLIDING MOTOR BASE FAN BELT TEAO FAN MOTOR WATER DISTRIBUTION ACCESS DOOR SPRAY BRANCH PAN SECTION... -
Page 41: Lsce & Lswa 1,2 M Wide Units
Operation and Maintenance Instructions LSCE & LSWA 1,2 m Wide Units COIL CASING SECTION DRIFT ELIMINATORS WATER DISTRIBUTION SPRAY BRANCH WATER DISTRIBUTION SPRAY BRANCH SUPPORT DRIFT ELIMINATOR SUPPORT COIL CONNECTIONS COIL PUMP RISER PIPING PAN SECTION ACCESS DOOR MIGRATION BAFFLE WRAPPER MAKE-UP VALVE WITH ADJUSTABLE FLOAT... -
Page 42: Lsce & Lswa 1,5 M Wide Units
Operation and Maintenance Instructions LSCE & LSWA 1,5 Wide Units COIL CASING SECTION DRIFT ELIMINATORS WATER DISTRIBUTION SPRAY BRANCH WATER DISTRIBUTION SPRAY BRANCH SUPPORT DRIFT ELIMINATOR SUPPORT COIL COIL CONNECTIONS PUMP RISER PIPING PAN SECTION MIGRATION BAFFLE MAKE-UP VALVE WRAPPER WITH ADJUSTABLE FLOAT SUCTION STRAINER ACCESS DOOR... -
Page 43: Lsce & Lswa 2,4 M & 3,0 M Wide Units (Single Side Fans)
Operation and Maintenance Instructions LSCE & LSWA 2,4 m & 3,0 m Wide Units (Single Side Fans) COIL CASING SECTION DRIFT ELIMINATORS WATER DISTRIBUTION SPRAY BRANCH WATER DISTRIBUTION SPRAY BRANCH SUPPORT COIL CONNECTIONS DRIFT ELIMINATOR SUPPORT COIL PUMP RISER PIPING PAN SECTION MIGRATION BAFFLE MAKE-UP VALVE WITH... -
Page 44: Lrc/Lrw 1 M Wide Units
Operation and Maintenance Instructions LRC / LRW 1 m Wide Units COIL CASING SECTION DRIFT ELIMINATORS WATER DISTRIBUTION SPRAY BRANCH DRIFT ELIMINATOR SUPPORT COIL WATER DISTRIBUTION PUMP RISER PIPING SPRAY BRANCH SUPPORT COIL CONNECTIONS PAN SECTION FAN HOUSING FAN SHEAVE FAN WHEEL FAN WRAPPER FAN BELT... -
Page 45: Lrc/Lrw 1,5 M Wide Units
Operation and Maintenance Instructions LRC / LRW 1,5 m Wide Units COIL CASING SECTION DRIFT ELIMINATORS WATER DISTRIBUTION SPRAY BRANCH DRIFT ELIMINATOR SUPPORT WATER DISTRIBUTION SPRAY BRANCH SUPPORT PUMP RISER PIPING COIL COIL CONNECTIONS PAN SECTION FAN HOUSING FAN SHEAVE FAN WRAPPER FAN BELT SUCTION HOOD... -
Page 46: Lrc/Lrw 2,4 M Wide Units
Operation and Maintenance Instructions LRC / LRW 2,4 m Wide Units COIL CASING SECTION DRIFT ELIMINATORS DRIFT ELIMINATOR SUPPORT COIL WATER DISTRIBUTION SPRAY BRANCH PUMP RISER PIPING WATER DISTRIBUTION SPRAY BRANCH SUPPORT COIL CONNECTIONS PAN SECTION FAN HOUSING FAN WHEEL FAN WRAPPER FAN BELT SUCTION HOOD... - Page 47 Operation and Maintenance Instructions...
- Page 48 Operation and Maintenance Instructions ©2012 EVAPCO Europe Bulletin 116-E Metric 0417...
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