AMCOT ST SERIES FIBERGLASS COOLING TOWER TABLE OF CONTENTS SECTIONS PAGES Introduction Safety Precautions Inspect Your Shipment General Overview Principle of Operation Tower Construction General Operating Precautions Startup Inspection Checklist Startup Procedures Preventative Maintenance Checklists Monthly Quarterly, Semi-Annual Annual General Maintenance...
AMCOT ST SERIES FIBERGLASS COOLING TOWER INTRODUCTION We would like to first say thank you for your business and purchase of an Amcot ST Series, open loop, counter flow, water cooling tower. Amcot strives to provide all of our clients with the highest level of customer service and quality products.
GENERAL OVERVIEW PRINCIPLE OF OPERATION The Amcot ST Series cooling tower is an open loop counter flow type of unit designed to remove excess heat from a water cooled system or application so that the equipment generating this heat can continuously operate within a specific temperature range.
UV inhibitor additive which protects against decay or deterioration from ultraviolet light which is a natural occurrence. The Amcot ST Series cold water basin utilizes a sloped basin designed to facilitate proper water flow to the outlet pipe connection and promote positive head pressure for your circulating pump. The sloped basin also allows for complete water drainage to occur during maintenance, cleaning, or seasonal shutdown.
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Air inlet Louvers The air inlet louvers of the ST Series cooling tower is a PVC mesh screen which is designed to prevent debris and wildlife from entering the cooling tower. The air inlet louvers are designed so that they can be removed for cleaning or replacing.
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TOWER CONSTRUCTION Fan Blade Assembly For ST Series models ST-3 thru ST-30 the fan assemblies are fixed pitch type, constructed from nylon. The pitch angles are preset by the factory to ensure proper operation and maximum allowable air flow is being generated while maintaining proper motor amp draw.
If you are unsure of who your local supplier is, please call Amcot at 1-800-444-8693 and we will be more than happy to assist you with finding an authorized dealer.
Ensure your disconnect switch is properly installed and working. Any safety interlocks should be tested. When operating ST Series towers on inverter drives or Variable Frequency Drives, make sure the minimum speed requirements have been programmed. o Standard Fan Motors on the ST Series can be operated on variable frequency drives with an operating range of 20-60 hertz.
AMCOT ST SERIES FIBERGLASS COOLING TOWER STARTUP PROCEDURES GENERAL STARTUP GUIDELINES o Inspect all exterior surfaces of the cooling tower. o Inspect and check all fasteners. o Remove any debris such as dirt, leaves, rocks, or other foreign items that do not belong.
AMCOT ST SERIES FIBERGLASS COOLING TOWER PREVENTATIVE MAINTENANCE GENERAL OVERVIEW The following is a series of recommended preventative maintenance procedures that should be performed on your cooling tower to help provide the maximum service life of your unit and ensure it provides years of reliable performance.
AMCOT ST SERIES FIBERGLASS COOLING TOWER PREVENTATIVE MAINTENANCE ANNUAL PROCEDURES ANNUAL PROCEDURES DATE Perform Monthly Checklist Vibration Switches – Test and adjust sensitivity as needed. (when applicable) Inspect all seams for leaks Perform annual cooling tower cleanings by a licensed professional Inspect fill media for debris and condition.
WATER DISTRIBUTION SYSTEM – SPRINKLER PIPE ASSEMBLIES General Overview Your ST Series water distribution assembly rotates based on the water returning to the tower. The force of this water fills the overall system and as the water exits through holes located on the sprinkler arms, this propels the assembly causing it to rotate.
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AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE WATER DISTRIBUTION SYSTEM – SPRINKLER PIPE ASSEMBLIES Sprinkler Pipe Assemblies (ST-40 to ST-60) Sprinkler pipes on ST-40 to ST-60 are attached to the center sprinkler head by a threaded end connection and a lock nut which is designed to prevent the arms from becoming loose. In addition, these arms use a tension wire assembly to help prevent deflection when filled with water.
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AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE WATER DISTRIBUTION SYSTEM – SPRINKLER PIPE ASSEMBLIES Sprinkler Pipe Assemblies (ST-70 to ST-1500) Sprinkler pipes on ST-70 to ST-1500 are attached to the center sprinkler head by a slip fit connection with set screws located on the sprinkler head point of connection. The assembly also uses a tension wire and turnbuckle assembly which extends from the center of the sprinkler head to the end of each sprinkler arm to help prevent deflection when filled with water.
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AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE WATER DISTRIBUTION SYSTEM – SPRINKLER PIPE ASSEMBLIES - 18 -...
AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE WATER DISTRIBUTION SYSTEM – SPRINKLER HEAD ASSEMBLIES Sprinkler Head If your sprinkler head fails to rotate smoothly during normal operation or if you see a lot of water coming out at the base of the sprinkler head, this is an indicator that the sprinkler head’s water seal is compromised.
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AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE WATER DISTRIBUTION SYSTEM – SPRINKLER HEAD ASSEMBLIES Sprinkler Head (ST-70 thru ST-1500) Sprinkler heads on models, ST-70 to ST-1500 are constructed from aluminum or stainless steel. Sprinkler heads are secured to center riser pipe by a threaded connection.
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AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE WATER DISTRIBUTION SYSTEM – SPRINKLER HEAD ASSEMBLIES Sprinkler Head Assembly Details If your sprinkler head fails to rotate smoothly this can often be a sign of damage to the internal seal/bearing or a result of hard water scale buildup occurring between the lower and upper sections of the sprinkler head assembly itself.
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AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE WATER DISTRIBUTION SYSTEM – GENERAL DATA Sprinkler Head Identification When attempting to identify sprinkler heads on towers that have been in service for a long time, each sprinkler head has a factory marking, “LSH” model number, on the top of the sprinkler head. To help with identifying your sprinkler head or potential tower model number you can refer to the table below.
WATER BASIN The water basin on the Amcot ST Series is constructed of FRP similar to the casing of the tower. Overtime the basin will collect dirt and debris from the environment. Therefore it is recommended that the tower is always operated with the suction strainer in place which should be inspected and cleaned regularly.
Amcot only recommends using the standard louver or the optional Anti-Splash Louver (ASL) option on the ST Series cooling tower. The ASL louver is an optional accessory that replaces the standard louver screen and is designed to prevent water splash out from occurring and minimize sunlight exposure to the basin which helps minimize biological growth.
AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE PIPE CONNECTIONS Your cooling tower is supplied with several points of connection for piping. The standard connections include the inlet, outlet, make-up, overflow, drain, and on larger units an automatic filler (Quick Fill) connection.
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Amcot ST towers are supplied with mechanical float valve assemblies that are attached to the make-up connection. Mechanical float valve assemblies consists of a plastic or brass valve, rod, and plastic float.
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AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE Pipe Connections Overflow Connection Your tower is fitted with an overflow connection (FPT) and overflow assembly. The overflow is designed to ensure that water level does not exceed a predetermined level which could cause structural damage to the basin or cause water to overflow out of the basin and flood the immediate area.
GENERAL MAINTENANCE Inlet Water Pressure Your Amcot ST Series tower will perform best when the proper pump selection is made. When selecting your circulating pump, it is critical to ensure that the tower pump head (or inlet PSI) is incorporated into your pump’s total PSI or TDH (Total Dynamic Head) calculation.
ST tower. Fan Guards The Amcot ST-H-3 thru ST-30 towers are supplied with a one piece combination fan guard and motor bracket. This assembly is attached to the FRP casing panel and can be removed from the tower by simply removing the fasteners.
AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE Mechanical System – Fan Assembly Fan Assembly & Balancing For ST-60 to ST-1500 fan assemblies, since they are adjustable pitch type of fans, it is important that they be properly set and balanced at the job site prior to operating to prevent damage to your equipment.
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Shutdown the motor, lockout the disconnect switch and visually inspect the fan assembly for damage. If you locate damage, please contact your distributor, representative, or Amcot immediately. It is not recommended that you operate the tower with a damaged fan installed.
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AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE Mechanical System – Fan Assembly The following is the pitch chart for the adjustable fans on models ST-60 to ST-1500. FAN PITCH FOR ST-60 TO ST-1500 MODELS PITCH MODEL PITCH ST-60 ST-300...
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AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE Mechanical System – Fan Assembly Fan Assembly Data FAN BLADE REFERENCE FAN DIAMETER TORQUE (FT-LBS) RATING MODEL NUMBER* (INCHES) (Adjustable Fan Blades) ST-3 LSF-050 19 1/2" ST-H-3 LSF-050 19 1/2" ST-5 LSF-050 19 1/2"...
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Motors – General Information Amcot fan motors are designed specifically for use on the ST Series cooling tower. Most of the ST Model towers ST-3 to ST-200 are direct drive motors, meaning the fan is directly secured to the motor’s output shaft.
AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MOTOR DATA Motor MODEL Phase Voltage Poles Frame Size Amp Draw Type ST-3 110/220 1250 2.8/1.4 TENV ST-H-3 110/220 1250 2.8/1.4 TENV ST-5 110/220 1250 2.8/1.4 TENV ST-H-5 110/220 1250 2.8/1.4 TENV ST-8...
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GENERAL MAINTENANCE Mechanical Systems Motors – Wiring WARNING: AMCOT RECOMMENDS THAT ALL MOTORS BE CONNECTED BY A LICENSED ELECTRICIAN TO ENSURE PROPER CONNECTION IS MADE TO PREVENT DAMAGE TO THE MOTOR ITSELF AND POSSIBLE INJURY TO THE INSTALLER. WARNING: DO NOT ATTEMPT TO CONNECT THE MOTOR TO LIVE WIRES. SERIOUS INJURY OR DEATH CAN OCCUR.
Prior to shipping the reducer with your unit at our facility, Amcot will inspect these components and in many cases we will attach the motor and reducer prior to shipping. When this occurs, Amcot will set the belt tension initially. HOWEVER, it is important to note that belt tension should always be verified at startup and within the first 48 hours of operation.
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AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE Mechanical Systems V-BELT DIAGRAMS - 39 -...
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AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE Mechanical Systems NOTES _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ - 40 -...
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AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE Mechanical Systems V-Belt Reducers – Belt Tensioning For belt adjustment, remove the outer cover to your reducer. This will reveal the internal components. The adjustment assembly consists of an adjusting lever, gauge, spring, washer, and bolt. See below diagram.
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Belt Replacement Over time even with successful tensioning, your V-belts will require replacing. The following chart is the list of belts associated with the gear reducers for ST Series towers ST-225 to ST-1500. 1) Turn off unit and perform lockout/tag-out procedures 2) Remove the outer housing panel.
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Please refer to the V-belt diagram for the location of the various bearings. Below is a list of the Bearings found on the various Reducers and ST Series models ST-200 to ST-1500. BEARING TABLE; ST V-BELT REDUCERS; LBM TYPE...
AMCOT ST SERIES FIBERGLASS COOLING TOWER GENERAL MAINTENANCE Prolonged (Seasonal) Shutdowns Some customers will not require their cooling towers to be operational during winter months of the year. In these cases, many owners will take their tower out of service for an extended period of time.
Legionnaire’s disease which is a very serious and life threatening respiratory infection. While Amcot cannot provide specific water treatment guidelines, we recommend that owners consult a local water treatment specialist whom can provide a water treatment program that is customized to your specific water conditions and concerns.
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Solids filtration can be provided by incorporating basket strainers into your piping layout, or through the use of separators or sand filters. Amcot offers solids filtration systems and inline strainers should you seek to incorporate these into your system. For more information, contact Amcot or your manufacturer’s representative, and we will be happy to assist you.
AMCOT ST SERIES FIBERGLASS COOLING TOWER COOLING TOWER TROUBLESHOOTING GUIDE SCENARIO CAUSES SOLUTIONS 1. CHECK PIPING VALVES AND MAKE SURE DESIGN WATER 1. EXCESS OR LACK OF WATER FLOW FLOW RATE IS MAINTAINED. 2. MAKE SURE EQUIPMENT AIR INTAKE IS NOT BEING 2.
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