Sterling Fan A0552321 User Manual

Cooling Tower Water and  
Chilled Water Pump Tanks  
Part Number: A0552321  
Bulletin Number: SC5-605.7  
Effective: 4/11/08  
Write Down Your Serial Numbers Here For Future Reference:  
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We are committed to a continuing program of product improvement.  
Specifications, appearance, and dimensions described in this manual are subject to change  
without notice.  
DCN No. ____________  
© Copyright 2008  
All rights reserved.  
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Table of Contents  
CHAPTER 1: SAFETY .................................................................5  
1-1 How to Use This Manual ................................................................................. 5  
Safety Symbols Used in this Manual.....................................................................5  
1-2 Warnings and Precautions .............................................................................. 6  
1-3 Responsibility.................................................................................................. 6  
CHAPTER 2: FUNCTIONAL DESCRIPTION...............................7  
2-1 Models Covered in This Manual...................................................................... 7  
2-2 General Description ........................................................................................ 7  
2-3 Standard Features .......................................................................................... 8  
2-4 Optional Features............................................................................................ 9  
CHAPTER 3: INSTALLATION ...................................................10  
3-1 Uncrating Your Pump Tank........................................................................... 10  
3-2 Installation Location Considerations.............................................................. 10  
3-3 Rigging.......................................................................................................... 10  
3-4 Installing Separate Tank Ledge Models........................................................ 11  
3-5 Installing Optional Equipment........................................................................ 11  
3-6 Making Electrical Connections ...................................................................... 11  
3-7 Making Piping Connections........................................................................... 12  
Tower Tank Piping Connections .........................................................................14  
Chilled Water Piping Connections.......................................................................15  
3-8 Initial Start-up................................................................................................ 15  
CHAPTER 4: OPERATION ........................................................16  
4-1 Start-up ......................................................................................................... 16  
4-2 Determining Flow Rate.................................................................................. 16  
4-3 Stand-by Pump Usage.................................................................................. 17  
Single Stand-by pump:........................................................................................17  
Dual Stand-By Pump...........................................................................................17  
4-4 Shut-down..................................................................................................... 17  
CHAPTER 5: MAINTENANCE...................................................18  
5-1 Preventative Maintenance............................................................................. 18  
Water Treatment .................................................................................................18  
Lubricating Pump Motors and Seals....................................................................18  
Maintaining Makeup Valve Assemblies...............................................................18  
CHAPTER 6: APPENDIX ...........................................................19  
6-1 Technical Assistance .................................................................................... 19  
Parts Department ................................................................................................19  
Service Department.............................................................................................19  
6-2 Remote Starters and NEMA Panels.............................................................. 20  
Pump Tanks  
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NEMA Panel Standard Features.........................................................................20  
NEMA Panel Options ..........................................................................................20  
6-3 Drawings and Specifications ......................................................................... 21  
Cooling Tower Water Pump Tanks......................................................................21  
Chilled Water Pump Tanks..................................................................................23  
Process Pump Curves and Specifications...........................................................25  
Re-circulation Pump Curves and Specifications..................................................26  
6-4 Parts List ....................................................................................................... 27  
Recommended Spare Parts................................................................................27  
Spare Process Pump Seals and Casing Gaskets ...............................................27  
Spare Re-circulating Pump Seals and Casing Gaskets ......................................27  
6-5 Optional Assembly Detail Drawings .............................................................. 28  
Tank Support Leg Assembly Detail: 4 Legs ........................................................28  
Tank Support Leg Assembly Detail: 6 Legs ........................................................29  
Tank Support Leg Assembly Detail: 7 Legs ........................................................30  
Tank Ladder Assembly Detail..............................................................................31  
Sightglass Assembly Detail.................................................................................32  
6-6 Typical Piping Diagrams................................................................................ 33  
Typical Single Well Cooling Tower Water Pump Tank Piping System................33  
Typical Dual Well Cooling Tower Pump Tank Piping System .............................34  
Typical Single Well Chilled Water Pump Tank Piping System ............................35  
Typical Dual Well Chilled Water Pump Tank Piping System...............................36  
Pump Tanks  
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Chapter 1: Safety  
1-1 How to Use This Manual  
Use this manual as a guide and reference for installing, operating, and maintaining your  
equipment. The purpose is to assist you in applying efficient, proven techniques that enhance  
equipment productivity.  
This manual covers only light corrective maintenance. No other maintenance should be  
undertaken without first contacting a service engineer.  
The Functional Description section outlines models covered, standard features, and optional  
features. Additional sections within the manual provide instructions for installation, pre-  
operational procedures, operation, preventive maintenance, and corrective maintenance.  
The Installation chapter includes required data for receiving, unpacking, inspecting, and setup  
of the equipment. We can also provide the assistance of a factory-trained technician to help  
train your operator(s) for a nominal charge. This section includes instructions, checks, and  
adjustments that should be followed before commencing with operation of the equipment.  
These instructions are intended to supplement standard shop procedures performed at shift,  
daily, and weekly intervals.  
The Operation chapter includes a description of electrical and mechanical controls, in  
addition to information for operating the equipment safely and efficiently.  
The Maintenance chapter is intended to serve as a source of detailed assembly and  
disassembly instructions for those areas of the equipment requiring service. Preventive  
maintenance sections are included to ensure that your equipment provides excellent, long  
service.  
The Troubleshooting chapter serves as a guide for identification of most common problems.  
Potential problems are listed, along with possible causes and related solutions.  
The Appendix contains technical specifications, drawings, schematics, and parts lists. A  
spare parts list with part numbers specific to your machine is provided with your shipping  
paperwork package. Refer to this section for a listing of spare parts for purchase. Have your  
serial number and model number ready when ordering.  
Safety Symbols Used in this Manual  
The following safety alert symbols are used to alert you to potential personal injury hazards.  
Obey all safety messages that follow these symbols to avoid possible injury or death.  
Danger! DANGER indicates an imminently hazardous situation which, if not avoided,  
will result in death or serious injury.  
Warning! WARNING indicates a potentially hazardous situation or practice which, if not  
avoided, could result in death or serious injury.  
Caution! CAUTION indicates a potentially hazardous situation or practice which, if not  
avoided, may result in minor or moderate injury or in property damage.  
Pump Tanks  
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1-2 Warnings and Precautions  
Our equipment is designed to provide safe and reliable operation when installed and operated  
within design specifications, following national and local safety codes.  
To avoid possible personal injury or equipment damage when installing, operating, or  
maintaining this equipment, use good judgment and follow these safe practices:  
; Follow all SAFETY CODES.  
; Wear SAFETY GLASSES and WORK GLOVES.  
; Disconnect and/or lock out power before servicing or maintaining the equipment.  
; Use care when LOADING, UNLOADING, RIGGING, or MOVING this  
equipment.  
; Operate this equipment within design specifications.  
; OPEN, TAG, and LOCK ALL DISCONNECTS before working on equipment.  
You should remove the fuses and carry them with you.  
; Make sure the equipment and components are properly GROUNDED before you  
switch on power.  
; When welding or brazing in or around this equipment, make sure VENTILATION is  
ADEQUATE. PROTECT adjacent materials from flame or sparks by shielding with  
sheet metal. An approved FIRE EXTINGUISHER should be close at hand and  
ready for use if needed.  
; Refrigeration systems can develop refrigerant pressures in excess of 500 psi (3,447.5  
kPa/ 34.47 bars). DO NOT CUT INTO THE REFRIGERATION SYSTEM. This  
must be performed by a qualified service technician only.  
; Do not restore power until you remove all tools, test equipment, etc., and the  
equipment and related components are fully reassembled.  
; Only PROPERLY TRAINED personnel familiar with the information in this  
manual should work on this equipment.  
We have long recognized the importance of safety and have designed and manufactured our  
equipment with operator safety as a prime consideration. We expect you, as a user, to abide  
by the foregoing recommendations in order to make operator safety a reality.  
1-3 Responsibility  
These machines are constructed for maximum operator safety when used under standard  
operating conditions and when recommended instructions are followed in the maintenance  
and operation of the machine.  
All personnel engaged in the use of the machine should become familiar with its operation as  
described in this manual.  
Proper operation of the machine promotes safety for the operator and all workers in its  
vicinity.  
Each individual must take responsibility for observing the prescribed safety rules as outlined.  
All warning and danger signs must be observed and obeyed. All actual or potential danger  
areas must be reported to your immediate supervisor.  
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Chapter 2: Functional Description  
2-1 Models Covered in This Manual  
This manual covers many models of cooling tower pump tanks and chilled water pump tanks  
with operating capacities of 100 to 6,125 gallons (378 to 23,183 liters). Pump tanks are  
designed, specified, and engineered to meet the needs of the process specified at the time of  
purchase. Model numbers are listed on the serial tag.  
Model numbers start with a CT or CW to describe cooling tower or chilled water tank  
configurations. The number following is the approximate capacity up to the overflow of the  
tank well(s) and a D at the end indicates a dual well configuration. Additional numbers are  
added to signify pump horsepower. For example, a CT1600D-20-20-10 pump tank is a  
cooling tower tank, 1,615 gallon (6,113 liter) capacity to its overflow, has dual wells, a 20 hp  
process pump, a 20 hp dual standby pump and a 10 hp recirculation pump.  
A model number followed by –Q is specially-constructed, and the information in this manual  
may not apply. Make sure you know the model and serial number of your equipment before  
contacting the manufacturer for parts or service.  
2-2 General Description  
Single well pump tanks are reservoirs for chilled water and tower cooling water processes.  
Process pump(s) deliver water through the chiller or cooling tower as well as through the  
process. Dual well tanks have re-circulation pump(s) to deliver water from the hot side to the  
chiller or tower. The water then returns to the cold side, where process pump(s) deliver  
cooled water directly to process.  
Standby pumps may be used as backups for both process and re-circulation during service or  
maintenance procedures. Manifolding options provide ease of connection to process and can  
ease the transition to standby pumps.  
Pump Tanks  
Chapter 2: Functional Description  
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2-3 Standard Features  
All tower and chilled water pump tanks come standard with the following:  
ODP motors and cast iron impellers on standard pumps  
Centrifugal pump(s) with cast iron housings, cast iron impellers and mechanical seals  
Solid diamond-plate pump ledge  
Standard hardware includes thermometer(s), compound liquid-filled pump pressure  
gauge(s) with trim, and drain valve  
Heavy gauge 304 stainless steel construction.  
Note: Despite its name, stainless steel is still susceptible to discoloration. A  
stainless steel tank will not “rust through” even though the surface of the  
metal may appear to be rust colored. This appearance may be caused by  
water quality (high chloride content or increased acidity in the water) or  
cross contamination from carbon steel dust in the vicinity of the stainless  
steel. The integrity of the stainless steel remains in tact even though its  
appearance is not perfectly clean.  
Factory-installed insulation and covers (chilled water pump tanks)  
Water strainer basket on cooling tower water pump tank models  
Threaded (up to 3” and flanged 4” and above) overflow opening, return openings  
(chilled water pump tanks), and process water return (dual-well cooling tower pump  
tanks)  
1” automatic water makeup valve for “hands-off” level control  
1/2” opening for field-installed thermometer  
2” valved drain connection  
Twin 1/2” plugged openings for sight glasses  
Six 1/2” plugged openings with brackets for optional/future thermostats  
Baffles and sidewall reinforcements on larger models  
Full-size pump trim for maximum efficiency including butterfly valve (less handle)  
and reducer (if necessary) on the suction side; increaser, check valve and butterfly  
valve (less handle) on the discharge side  
One year warranty on parts and labor (labor in North America only)  
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2-4 Optional Features  
All cooling tower and chilled water pump tanks are available with the following:  
Standby pump  
Frame reinforcement for supporting other equipment  
Special paint  
Mild steel well and fittings (divider if applicable)  
Second pump ledge  
Support legs  
OSHA handrail and ladder  
Thermostat and thermowell  
Extra thermostats and plugged 1/2” NPT thermostat openings  
High- and/or low-temperature alarm  
High- and/or low-pressure alarm  
High- and/or low-level alarm  
No flow alarm  
Re-circulating (P2) pump (standard on dual well tanks)  
Dual duty (P3) standby pump with isolation valving  
Additional plugged or valved openings  
Clayton float valve  
Discharge manifold with process and re-circulation pump standby butterfly valving  
NEMA 1 pump starter(s), mounted or un-mounted  
NEMA 12-rated central control panel  
Protection for outdoor installation  
Chilled water pump tanks are also available with:  
Automatic pressure regulating bypass valve for single well tanks; assures full flow  
through the chiller evaporator  
Cooling tower water pump tanks are also available with:  
Insulation  
Cover  
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Chapter 3: Installation  
3-1 Uncrating Your Pump Tank  
Caution! Due to the size and weight of larger model pump tanks, the manufacturer  
recommends using bonded professional millwrights to unload and move larger  
pump tanks.  
Rig the pump tank from the frame only and use spreader bars to prevent load transfer to any  
pump tank components. Rig the frame from at least four points and balance the load before  
lifting to clear the skid.  
3-2 Installation Location Considerations  
Consider the following points when locating your pump tank:  
Locate close to the chillers and/or cooling towers and the process itself to minimize  
field piping expense  
Locate adjacent to drain and city water sources  
Consult a structural engineer to assure that the floor, mounting pad, or structural steel  
support is of adequate strength  
3-3 Rigging  
Due to the large size and weight of the pump tanks, we recommend professional rigging and  
installation. We have a nationwide installation organization that can install your system.  
Do not remove the base skid until the unit is at the final location. Lower the unit (do not drop  
it) from any truck, platform, or shipping dock.  
All 150 through 400 Series pump tanks are provided with lifting lugs on the pump tank  
frame. All 500 Series and larger tanks are provided with lifting lug brackets on the pump tank  
body. When lifting, use adequately rated hoist, lifting straps and/or chains. Avoid transferring  
the load to the pumps and any other components.  
Metal pump tanks are provided with slots in the frame for use with fork trucks of sufficient  
capacity and properly sized forks.  
Pump Tanks  
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3-4 Installing Separate Tank Ledge Models  
Pump tanks from the 2000, 2700, 3700, and 5100 Series are a two-component design with  
separate tank and pump ledge assemblies.  
These models include a hardware package and assembly drawing located in the information  
packet. The tank and pump ledge were temporarily joined together at the factory, so all  
components should line up properly in the field.  
General guidelines for installation are the following:  
Two-piece models are not designed to be lifted as a unit. Fully and separately support  
both tank and ledge assemblies when they are moved.  
Providing a level area for the tank installation will simplify reconnecting the pump  
ledge to the tank.  
Floor mounted tanks and ledges are joined together with support plates and the pump  
trim. Gravity and mass provide most of the structural integrity.  
Leg-mounted tanks and ledges are joined together with support plates, the pump trim,  
and bolts between the facing surfaces of the tank and ledge. Typically, the tank  
assembly is lifted and mounted on the four legs first, then the pump ledge is lifted with  
a fork truck, and the two remaining legs are attached. Use the center leg bolt holes and  
the facing surface bolts to bring together and align the ledge and the tank. See  
assembly drawings on pages 28-30for detailed instructions.  
Butterfly valves bridge the gap between the ledge and tank flanges. These butterfly  
valves may be shipped loose or mounted to the pump suction connection to the tank.  
The flanges may not always line up as expected due to the tendency of the metal to  
move as it cools. Extra effort may be required to help align the flanges to bring the  
tank sections together properly.  
Caution! Improper handling may also cause movement of the flanges. Be sure the lifting  
lugs or forklift holes are used for moving the tank and base. Do not use any of  
the piping as a means of moving the equipment into position.  
3-5 Installing Optional Equipment  
See pages 28 to 32 in the Appendix for assembly details for the tank legs, ladder, and sight  
glass.  
3-6 Making Electrical Connections  
Supply electricity of the voltage, phase, and cycle listed on the serial tag. Pump motor voltage  
must be within plus or minus ten percent of the nameplate voltages.  
Pump Starters. Pump motor starters may be pre-mounted, shipped loose, or not provided,  
depending on the options specified on the order.  
On/Off Selector Switch. All pump starters are supplied with an on/off selector switch on the  
starter enclosure cover.  
Pump Tanks  
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3-7 Making Piping Connections  
Piping systems vary with process application and pump tank configuration. Typical system  
configurations are available in the Appendix, but the details may or may not apply to your  
application. Refer to Figure 1 on page 13 for pipe sizing guidelines. Piping systems must be  
designed by a person knowledgeable in piping system design and configuration. Our  
contracting department can design and install a piping system tailored to your process.  
All process piping returning to the pump tank must be equipped with an inverted trap with a  
vacuum breaker at the high point of the system to prevent mains from siphoning into the  
pump tank.  
Run mains full size in order to reduce pressure drop in the system and provide maximum  
pressures at the ends of the mains.  
Caution! Do not support piping from the tank or from pumps. Do not weld piping or  
piping supports to the tank, as epoxy coating on some tank models can be  
damaged.  
Caution! Customer is responsible for converting connections to metric sizes as needed.  
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Figure 1: Pipe Sizing Guide  
Pipe Sizing Guide  
Pipe Size  
Flow-Steel Pipe  
Flow-PVC Pipe  
1/2  
3/4  
1
2
5
2
5
10  
10  
1 1/4  
1 1/2  
2
20  
20  
30  
30  
50  
55  
2 1/2  
3
100  
160  
320  
900  
2000  
3500  
5000  
100  
160  
320  
1000  
2100  
3700  
5800  
4
6
8
10  
12  
Based on 10’ head loss/100’ of pipe (new pipe) — open piping systems. A safety factor of 15  
to 20% should be added based on local conditions.  
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Tower Tank Piping Connections  
Return From Process (Single Well). Connect process return piping to the cooling tower  
inlet with appropriate balancing valves and gauges. Size this line to the tower flow rate.  
Return From Process (Dual Well). Connect process return piping to the hot well. Size  
piping to the process flow rate.  
Re-circulation Pump Discharge (Dual Well). Connect to the cooling tower inlet with  
appropriate balancing valves and gauges. Size according to the pump discharge rate.  
Return From Tower. The return from the tower outlet enters the pump tank from above and  
terminates above the water level at the water strainer basket location directing flow through  
the basket. Cut the end of the line at a 45º angle.  
Makeup. Connect a 1” (approximately 25 mm) water line from a city water source to the  
makeup inlet to maintain the water level in the pump tank. City water pressure should not  
exceed 30 psi pressure. Check local codes. Backflow preventer may be required.  
Overflow. Connect the overflow outlet to an approved, trapped drain to permit excess water  
in the pump tank to overflow to the drain. Size the overflow line according to the size of the  
pump tank. (Consult specifications on page 21.)  
To Drain. Connect this outlet to a 2” (approximately 51 mm) line leading to an approved,  
trapped drain.  
Process Pump Discharge. Connect the pump discharge to the process water supply main.  
Size the pipe to the pump discharge rate to the tower.  
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Chilled Water Piping Connections  
Process Pump Discharge (Single Well). Connect process pump discharge to the chiller  
evaporator water inlet. Size to the chilled water flow rate. Chiller evaporator inlet and outlet  
should have valves and temperature and pressure gauges. Outlet of the evaporator is  
connected to the chilled process water supply.  
Process Pump Discharge (Dual Well). Connect directly to the chilled water process supply.  
Size according to process flow requirements.  
Return (Single Well). Connect the chilled water returning from the process to the pump tank  
threaded return inlet. Size this line according to the chilled water flow rate.  
Makeup. Connect a 1” (approximately 25 mm) water line from a city water source to the  
makeup inlet to maintain the water level in the pump tank.  
Overflow. Connect the overflow outlet to an approved, trapped drain to permit excess water  
in the pump tank to overflow to the drain. Size the overflow line according to the size of the  
pump tank. (Consult specifications on page 23.) Do not connect to draw if glycol is used in  
the system.  
To Drain. Connect to a 2” (approximately 51 mm) line leading to an approved, trapped drain.  
Do not connect to draw if glycol is used in the system.  
Bypass (Single Well). Optional: recommended on single pump systems. Pipe full size to the  
pressure-regulating valve from the evaporator outlet to allow flow if process does not require  
flow, to ensure proper flow through the evaporator at all times.  
3-8 Initial Start-up  
Remove all tools, foreign matter and debris from the pump tank reservoir and piping.  
Complete all piping leading to and from the pump tank. Observe all applicable codes.  
Complete all electrical wiring. Observe all applicable codes.  
Prepare all related equipment in the system for operation.  
Leak check piping. Flush and clean system.  
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Chapter 4: Operation  
4-1 Start-up  
1. Close the drain line at the bottom of the pump tank.  
2. Open the 1” makeup water valve and allow the tank to fill until the automatic float  
valve shuts off. Adjust the float level so the standing water level is 16” from the top  
of the tank, 12” on 150 Series pump tanks. Some tower systems may require a lower  
level to allow for drawback from the cooling towers.  
3. Check all wiring integrity, field installed controls and voltage.  
4. Verify pump motor rotation: should be clockwise from the motor end.  
5. Open all pump suction valves fully and lock down.  
6. If the process piping is not full of water, close the discharge valves of a process pump  
and start that pump. Open the discharge valve very slowly to fill the system. Do this  
very slowly to prevent the piping from shaking resulting in possible breakage. When  
piping is full, the discharge valve can be left fully open, if the pump is a non-  
overloading pump. Follow the same procedure for the other process pumps.  
7. Repeat step 6 for re-circulating pumps. Leave pump discharge valve(s) fully open.  
Throttle the valves for proper flow and pressure drop. Lock down and mark valve(s)  
when complete. (On metal towers, throttle the pump for the flow rate and balance the  
valves on the hot basin(s) for proper depth.)  
4-2 Determining Flow Rate  
1. Close the gauge cock leading to the pump suction side, and open the gauge cock  
leading to the pump discharge.  
2. Start the pump and make note of the discharge pressure in psi (kPa/bars).  
3. Check the pump curve (See page 25) for the appropriate sample curve discharge  
pressure in psi (kPa/bars).  
4. Project this point down to find the flow in gpm (lpm).  
Pump Tanks  
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4-3 Stand-by Pump Usage  
All stand-by pumps should be checked intermittently to make sure they are operational for  
when they may be required for usage.  
Single Stand-by pump:  
1. Open the suction valve fully and lock down.  
2. Open the discharge valve slowly until it is equal to the pump it will be replacing.  
3. Shut down the pump being replaced and make sure the suction and discharge valves  
are fully closed.  
Dual Stand-By Pump  
1. Open the discharge manifold valve on the proper side of the divider for the  
pump being replaced. Be sure the opposite discharge manifold valve is fully  
closed.  
2. Open the suction valve on the proper side of the divider for the pump being  
replaced. Be sure the opposite suction valve is fully closed.  
3. Open the discharge valve slowly until it is equal to the pump it will be  
replacing.  
4. Shut down the pump being replaced and make sure the suction and discharge  
valves are fully closed.  
4-4 Shut-down  
1. Prepare all process and related equipment for shutdown.  
2. Shut down all pumps  
3. Close the water makeup valve.  
4. If you are draining the system, open the 2” drain valve.  
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Chapter 5: Maintenance  
5-1 Preventative Maintenance  
Water Treatment  
Control of slime, algae, and bacteria growth is extremely important. Cooling towers and  
reservoir pump tanks are superb environments for microorganism growth. Warm water,  
organic debris, and air encourage bacterial growth. Treat your system with chemicals  
(microbiocides) to control microorganism growth.  
Caution! Uncontrolled microorganism growth causes system problems such as fouling  
and corrosion, and can spread bacterially-transmitted diseases.  
You must reduce slime growth and bacterial contamination to eliminate disease-causing  
bacteria.  
Properly used, environmentally approved microbiocide controls system bacteria. Chemical  
treatments must be regularly monitored by qualified personnel.  
The manufacturer strongly recommends use of EPA-registered microbiocides on a regular  
basis. We do NOT recommend use of chlorine or backyard swimming pool chemicals.  
Permitting the discharge of such chemicals into a city sewer may violate local, state, and/or  
federal laws.  
We offer a full-service water treatment program including chemicals, dispensing equipment,  
automatic bleed-off, and monthly water analysis. Contact the Parts and Service department  
for more information.  
Lubricating Pump Motors and Seals  
Some pump motors require greasing; use a high grade ball and roller bearing grease such as  
Shell Dolium R or Chevron SR1. Motors with regreasable bearings are shipped with a high  
quality, wide temperature range grease.  
Caution! Pump seals require water for lubrication, so the pumps must never be run dry  
or be dead headed.  
Always fill the tank before attempting to operate the pumps. Seal failures usually result from  
running the pump dry.  
Maintaining Makeup Valve Assemblies  
Periodically inspect the water makeup valve assembly for proper operation. If the valve no  
longer shuts off completely or reliably, replace it. Make sure that the plastic ball float is  
buoyant for proper operation.  
Pump Tanks  
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Chapter 6: Appendix  
6-1 Technical Assistance  
Parts Department  
[
]
[262]  
Call toll-free 7am–5pm CST 800 423-3183 or call 641-8610, Fax [262] 641-8653  
The ACS Customer Service Group will provide your company with genuine OEM quality parts  
manufactured to engineering design specifications, which will maximize your equipment’s performance  
and efficiency. To assist in expediting your phone or fax order, please have the model and serial  
number of your unit when you contact us. A customer replacement parts list is included in this manual  
for your convenience. ACS welcomes inquiries on all your parts needs and is dedicated to providing  
excellent customer service.  
Service Department  
[
]
[
] 641  
Call toll-free 8am–5pm CST 800 423-3183 or call 262  
-8610  
[
]
Emergencies after 5pm CST, call 847 439-5655  
We have a qualified service department ready to help. Service contracts are available for most of our  
Sales Department  
Call [262] 641.8610 Monday—Friday, 8am—5pm CST, fax [262] 641-8653  
Our products are sold by a world-wide network of independent sales representatives. Contact our  
Sales Department for the name of the sales representative nearest you.  
Contracting Department  
Call [262] 641-8610 Monday—Friday, 8am—5pm CST  
Let us install your system. The Contracting Department offers any or all of these services: project  
planning; system packages including drawings; equipment, labor, and construction materials; and union  
or non-union installations.  
Sterling, Inc.  
5900 S. 160th Street  
New Berlin, WI 53151  
Pump Tanks  
Chapter 6: Appendix  
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6-2 Remote Starters and NEMA Panels  
Pump tanks can be provided with electrical controls such as basic motor starters or elaborate  
NEMA panels.  
Motor starters or NEMA panels can be shipped loose for field installation or pre-mounted for  
space saving convenience. Motor starters are equipped with on/off selector switches for  
turning the pump on with overload relays to protect the motor when operating. On tower  
systems, re-circulating pump and tower fan motor starter are also provided with thermostats  
for proper temperature. The chiller provides the temperature control on chilled water  
systems.  
All starters require a 120-volt power source for the control circuit.  
NEMA Panel Standard Features  
The NEMA panel is a properly sized enclosure to house all the starters required for each  
pump tank system. A control circuit transformer is also provided to create the 120 volt  
control circuit needed for starters and thermostats. A power distribution block is provided to  
bring in main power to the panel. All internal wiring is provided and selector switches and  
indicator lights are provided on the NEMA panel door with labels to indicate each device.  
NEMA Panel Options  
Each panel can be customized beyond the basic setup. A list of some of the possible additions  
are as follows:  
Alarm circuitry with horn and strobe light  
High temperature alarm  
Low pressure alarm  
High pressure alarm  
Low flow alarm  
Low level alarm  
High level alarm  
Digital temperature display  
Amp meters  
Hour meters  
Digital flow meters  
UL panel  
Automatic water make-up  
Variable speed systems  
Pump Tanks  
Chapter 6: Appendix  
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6-3 Drawings and Specifications  
Cooling Tower Water Pump Tanks  
Side View  
Top View  
(P2 Pump Shown Only For Clarity)  
Front View  
American Standards  
Maximum  
Return  
water &  
overflow  
pumps/ connections  
Tank weight  
(less pumps)  
tower tons c  
Capacity  
gallons  
Maximum  
Dimensions  
Model  
number  
CT140 (D)  
PT390 (D) d  
Single Dual  
inches  
W
pounds  
Shipping Operating  
well  
25  
well Overflow Operating  
13  
39  
ledge  
3
3
Inches  
3” NPT  
L
H
125  
390  
100  
350  
72  
95  
36  
56  
40  
64  
600  
500  
1,800  
3,500  
78  
5” CLMP  
4” FLG  
4” FLG  
6” FLG  
6” FLG  
6” FLG  
6” FLG  
6” FLG  
CT480 (D)  
CT720 (D)  
CT1080 (D)  
CT1620 (D)  
CT2040 (D)  
CT2700 (D)  
CT3670 (D)  
CT5130 (D)  
90  
135  
206  
310  
382  
509  
698  
978  
45  
68  
450  
675  
360  
540  
3
4
4
4
5
6
6
7
102  
114  
114  
138  
150  
150 121  
162 121  
162 169  
49.5  
73.5  
73.5  
73.5  
91  
52  
52  
77  
77  
78  
78  
90  
92  
2,000  
2,600  
3,400  
4,000  
5,000  
6,000  
7,000  
7,800  
6,000  
8,600  
103  
155  
191  
225  
349  
489  
1,030  
1,550  
1,910  
2,545  
3,490  
4,890  
900  
12,400  
17,500  
22,100  
28,500  
37,600  
50,700  
1,345  
1,685  
2,245  
3,140  
4,400  
8” FLG  
10” FLG  
CT6285 (D)  
1,257  
629  
6,285  
5,655  
9
162 217  
94  
14,700  
69,100  
c
d
Based on three (3) gpm per ton and towers being within 25 feet of the tank.  
“P” signifies molded polyethylene tank.  
PT390 = 6” CLMP, CT5130 = 6” FLG, CT6285 = 8” FLG overflow connections only.  
Metric Standards  
Maximum  
Return  
Tank weight  
tower cooling c  
Capacity  
Maximum  
water &  
overflow  
Dimensions  
cm  
(less pumps)  
Model  
number  
Single  
well  
Dual  
well  
liters  
pumps/ connections  
ledge  
Kg  
Overflow Operating  
mm  
L
W
H
Shipping Operating  
CT140 (D)  
PT390 (D) d  
CT480 (D)  
CT720 (D)  
CT1080 (D)  
CT1620 (D)  
CT2040 (D)  
CT2700 (D)  
CT3670 (D)  
CT5130 (D)  
CT6285 (D)  
94,615  
49,200  
147,599  
170,303  
257,353  
389,814  
586,613  
722,859  
965,073  
473  
1,476  
1,703  
2,555  
3,899  
5,867  
7,229  
9,633  
378  
1,325  
1,362  
2,044  
3,407  
5,091  
6,378  
8,497  
11,885  
16,654  
21,404  
3
3
3
4
4
4
5
6
6
7
9
76 mm  
183  
91 102  
273  
227  
908  
817  
1,588  
2,722  
3,901  
5,625  
295,200  
340,619  
510,921  
779,628  
1,173,195  
1,445,717  
1,926,361  
2,641,651 1,320,825 13,209  
3,701,339 1,850,669 18,509  
4,757,242 2,380,513 23,789  
241 142 162  
259 126 132  
289 187 132  
289 187 195  
350 187 195  
381 231 198  
381 307 198  
411 307 229  
411 429 234  
411 551 239  
127 mm  
102 mm  
102 mm  
152 mm  
152 mm  
152 mm  
152 mm  
152 mm  
203 mm  
254 mm  
1,180  
1,543  
1,815  
2,268  
2,722  
3,176  
3,539  
6,668  
7,938  
10,025  
12,928  
17,056  
22,998  
31,344  
c
In Kcal/hr, calculated for cooling tower water, based on 3 lpm per 1,000 Kcal/hr and towers being within eight (8) meters of the  
tank.  
d
“P” signifies molded polyethylene tank.  
PT390 = 152mm, CT5130 = 152mm, CT6285 = 203mm overflow connections only.  
Pump Tanks  
Chapter 6: Appendix  
21 of 36  
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Figure 2: Standard Pumps and Trim Based on Cooling Tower Capacities  
(Flow Based on 3 gpm per Ton)  
American Standards  
Capacity  
Trim  
size  
inches  
2½”  
2½”  
3”  
Process  
pump  
hp  
Recirculating  
Nominal  
cooling tower tons  
Nominal flow  
gallons  
60  
pump  
hp  
3
20  
30  
40  
5
90  
120  
150  
7½  
7½  
10  
3
5
5
50  
3”  
60  
180  
4”  
10  
5
75  
80  
225  
240  
300  
375  
450  
525  
600  
750  
4”  
4”  
4”  
6”  
6”  
6”  
6”  
6”  
15  
15  
20  
20  
25  
30  
30  
40  
7½  
7½  
7½  
10  
10  
15  
15  
20  
20  
100  
125  
150  
175  
200  
250  
300  
900  
6”  
50  
Pump horsepower  
Amp draw 460/3/60  
Shipping weight (lbs.)  
1½  
2.6  
60  
3
4.8  
95  
90  
5
7.6  
115  
115  
7½  
11  
125  
275  
10  
14  
165  
320  
15  
21  
180  
425  
20  
27  
300  
510  
25  
34  
310  
630  
30  
40  
400  
670  
40  
52  
465  
50  
65  
710  
60  
77  
730  
P1  
P2  
Trim size (inches)  
Maximum flow (gpm)  
Shipping weight (lbs.)  
2
50  
25  
2½  
90  
35  
3
160  
50  
4
320  
75  
6
900  
120  
8
2,000  
165  
Metric Standards  
Capacity  
Trim  
Process  
pump  
Recirculating  
pump  
Nominal refrigeration  
Tower water, Kcal/hr  
75,600  
Nominal flow  
liters  
227  
size  
mm Dia.  
64  
hp  
5
kW  
3.73  
5.59  
5.59  
hp  
kW  
3
3
2.24  
2.24  
113,400  
151,200  
189,000  
341  
454  
568  
64  
76  
76  
7½  
7½  
10  
5
3.73  
7.50  
5
3.73  
226,800  
283,500  
302,400  
378,000  
472,500  
567,000  
661,500  
756,000  
682  
852  
909  
1,135  
1,419  
1,703  
1,987  
2,271  
2,839  
3,406  
102  
102  
102  
102  
152  
152  
152  
152  
152  
152  
10  
15  
15  
20  
20  
25  
30  
30  
40  
50  
7.50  
5
3.73  
5.59  
5.59  
5.59  
7.50  
7.50  
11.19  
11.19  
14.91  
14.91  
11.19  
11.19  
14.91  
14.91  
18.64  
22.37  
22.37  
29.93  
37.29  
7½  
7½  
7½  
10  
10  
15  
15  
20  
20  
945,000  
1,134,000  
Pump  
horsepower/kW  
1½/1.12 3/2.24 5/3.73 7½/5.59 10/7.5 15/11.19 20/14.91 25/18.64 30/22.37 40/29.93 50/37.29 60/44.7  
4
Amp draw 460/3/60  
Ship weight (Kg) P1  
P2  
2.6  
28  
4.8  
44  
41  
7.6  
53  
53  
11  
57  
125  
14  
75  
146  
21  
82  
193  
27  
137  
232  
34  
141  
286  
40  
182  
304  
52  
211  
65  
323  
77  
332  
Trim size (inches)  
Maximum flow (lpm)  
Shipping weight (Kg)  
2
189  
12  
2½  
340  
16  
3
624  
23  
4
6
8
1,211  
35  
3,406  
55  
7,570  
75  
Pump Tanks  
Chapter 6: Appendix  
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Chilled Water Pump Tanks  
Side View  
(P2 Pump Shown Only For Clarity)  
Top View  
Front View  
American Standards  
Maximum tons  
Return  
water &  
overflow  
Tank weight  
(less pumps)  
chilled H2O c  
Capacity  
gallons  
Maximum  
Dimensions  
Model  
number  
Single Dual  
well  
47  
Pumps/ Connections  
inches  
W
pounds  
Shipping Operating  
well Overflow Operating  
23  
73  
Ledge  
inches  
3” NPT  
5” CLMP  
4” FLG  
4” FLG  
6” FLG  
6” FLG  
6” FLG  
6” FLG  
6” FLG  
L
H
CW140 (D)  
PC390 (D) d  
CW480 (D)  
CW720 (D)  
CW1080 (D)  
CW1620 (D)  
CW2040 (D)  
CW2700 (D)  
CW3670 (D)  
CW5130 (D)  
CW6285 (D)  
125  
390  
110  
350  
3
3
3
4
4
4
5
6
6
7
9
72  
95  
36  
56  
40  
64  
52  
52  
77  
77  
78  
78  
90  
92  
94  
600  
500  
1,800  
3,500  
146  
175  
87  
450  
420  
102  
114  
114  
138  
150  
150 121  
162 121  
162 169  
162 217  
49.5  
73.5  
73.5  
73.5  
91  
2,000  
2,600  
3,400  
4,000  
5,000  
6,000  
7,000  
7,800  
14,700  
6,000  
8,600  
262  
411  
617  
771  
1,029  
1,418  
1,985  
131  
206  
309  
386  
514  
709  
993  
675  
630  
1,030  
1,550  
1,910  
2,545  
3,490  
4,890  
6,285  
990  
12,400  
17,500  
22,100  
28,500  
37,600  
50,700  
69,100  
1,480  
1,850  
2,470  
3,405  
4,765  
6,125  
8” FLG  
10” FLG  
2,553 1,276  
c
d
Based on 2.4 gpm per ton.  
“P” signifies molded polyethylene tank.  
PC390 = 6” CLMP, CW5130 = 6” FLG, CW6285 = 8” FLG overflow connections only.  
Metric Standards  
Maximum cooling,  
Return  
water &  
overflow  
Tank weight  
(less pumps)  
chilled H2O c  
Capacity  
Maximum  
Dimensions  
cm  
Model  
number  
Single  
well  
Dual  
well  
liters  
pumps/ connections  
Kg  
Overflow Operating  
ledge  
mm  
L
W
H
Shipping Operating  
CW140 (D)  
PC390 (D) d  
CW480 (D)  
CW720 (D)  
CW1080 (D)  
CW1620 (D)  
CW2040 (D)  
CW2700 (D)  
CW3670 (D)  
CW5130 (D)  
CW6285 (D)  
177,876  
552,552  
662,305  
991,565  
1,555,471  
2,335,098 1,169,441  
2,917,927 1,460,856  
3,894,353 1,945,284  
87,046  
276,276  
329,260  
495,783  
779,628  
473  
1,476  
1,703  
2,555  
3,849  
5,867  
7,229  
9,633  
416  
1,325  
1,590  
2,385  
3,747  
5,602  
7,002  
9,349  
12,888  
18,036  
23,183  
3
3
3
4
4
4
5
6
6
7
9
76 mm  
183  
91 102  
273  
227  
908  
817  
1,588  
2,722  
3,901  
5,625  
241 142 162  
259 126 132  
289 187 132  
289 187 195  
350 187 195  
381 231 198  
381 307 198  
411 307 229  
411 429 234  
411 551 239  
127 mm  
102 mm  
102 mm  
152 mm  
152 mm  
152 mm  
152 mm  
152 mm  
203 mm  
254 mm  
1,180  
1,543  
1,815  
2,268  
2,722  
3,176  
3,539  
6,668  
7,938  
10,025  
12,928  
17,056  
22,998  
31,344  
5,366,263 2,683,281 13,209  
7,512,431 3,758,108 18,509  
9,662,084 4,829,150 23,789  
c
In Kcal/hr, calculated for chilled water, based on 3 lpm per 1,000 Kcal/hr.  
d
“P” signifies molded polyethylene tank.  
PC390 = 152mm, CW5130 = 152mm, CW6285 = 203mm overflow connections only.  
Pump Tanks  
Chapter 6: Appendix  
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Figure 3: Standard Pumps and Trim Based on Chiller Capacities  
(Flow based on 2.4 gpm per ton)  
American Standards  
Capacity  
Trim  
size  
inches  
2½”  
2½”  
3”  
Process  
pump  
hp  
Recirculating  
Nominal  
refrigeration tons  
Nominal flow  
gallons  
60  
pump  
hp  
3
25  
35  
5
84  
120  
144  
7½  
7½  
10  
3
5
5
50  
60  
3”  
75  
180  
4”  
10  
5
90  
216  
240  
300  
372  
444  
528  
600  
744  
4”  
4”  
4”  
6”  
6”  
6”  
6”  
6”  
15  
15  
20  
20  
25  
30  
30  
40  
7½  
7½  
7½  
10  
10  
15  
15  
20  
20  
100  
125  
155  
185  
220  
250  
310  
375  
900  
6”  
50  
Pump horsepower  
Amp draw 460/3/60  
Shipping weight (lbs.)  
1½  
2.6  
60  
3
4.8  
95  
90  
5
7½  
10  
14  
165  
320  
15  
21  
180  
425  
20  
27  
300  
510  
25  
34  
310  
630  
30  
40  
400  
670  
40  
52  
465  
50  
65  
710  
60  
77  
730  
7.6  
115  
115  
11  
125  
275  
• P1  
• P2  
Trim size (inches)  
Maximum flow (gpm)  
Shipping weight (lbs.)  
2
50  
25  
2½  
90  
35  
3
160  
50  
4
320  
75  
6
900  
120  
8
2,000  
165  
Metric Standards  
Capacity  
Trim  
size  
mm dia.  
64 mm  
64 mm  
76 mm  
Process  
pump  
Recirculating  
pump  
Nominal refrigeration,  
chilled water, Kcal/hr  
75,600  
Nominal flow  
liters  
227  
hp  
5
kW  
3.73  
5.59  
5.59  
hp  
kW  
3
3
2.24  
2.24  
105,840  
151,200  
181,440  
318  
454  
545  
7½  
7½  
10  
5
3.73  
76 mm  
7.50  
5
3.73  
226,800  
272,160  
302,400  
378,000  
468,720  
559,440  
665,280  
756,000  
681  
818  
908  
1,136  
1,408  
1,680  
1,998  
2,271  
2,816  
3,407  
102 mm  
102 mm  
102 mm  
102 mm  
152 mm  
152 mm  
152 mm  
152 mm  
152 mm  
152 mm  
10  
15  
15  
20  
20  
25  
30  
30  
40  
50  
7.50  
5
3.73  
5.59  
5.59  
5.59  
7.50  
7.50  
11.19  
11.19  
14.91  
14.91  
11.19  
11.19  
14.91  
14.91  
18.64  
22.37  
22.37  
29.93  
37.29  
7½  
7½  
7½  
10  
10  
15  
15  
20  
20  
937,440  
1,134,000  
Pump horsepower/kW 1½/1.1 3/2.24 5/3.73 7½/5.5 10/7.5 15/11.1 20/14.9 25/18.6 30/22.3 40/29.9 50/37.2 60/44.7  
2
9
9
1
4
7
3
9
4
Amp draw 460/3/60  
Ship weight (Kg) P1  
P2  
2.6  
28  
4.8  
44  
41  
7.6  
53  
53  
11  
57  
125  
14  
75  
146  
21  
82  
193  
27  
137  
232  
34  
141  
286  
40  
182  
304  
52  
211  
65  
323  
77  
332  
Trim size (mm)  
Maximum flow (lpm)  
Shipping weight (Kg)  
51 mm  
189  
12  
64 mm  
340  
16  
76 mm  
624  
23  
102 mm  
1,211  
35  
152 mm  
3,406  
55  
203 mm  
7,570  
75  
Pump Tanks  
Chapter 6: Appendix  
24 of 36  
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Process Pump Curves and Specifications  
TOTAL HEAD  
KG/  
CM  
P1 PROCESS PUMP CURVES - 60 CYCLE  
PSI FEET  
2
100  
220  
7
6.5  
6
90  
200  
80  
5.5  
5
180  
60 HP  
50 HP  
70  
60  
50  
40  
160  
140  
120  
100  
15 HP  
20 HP  
4.5  
4
25 HP  
10 HP  
30 HP  
3.5  
3
5 HP  
40 HP  
7 1/2 HP  
3 HP  
100  
2.5  
U.S. GALLONS  
PER MINUTE  
200  
300  
1000  
400  
1500  
500  
600  
700  
2500  
800  
3000  
900  
3500  
1000  
LITERS  
PER MINUTE  
500  
2000  
4000  
A0548756  
Pump Information  
Final discharge  
trim size ℵ  
inches  
Pump ship  
wt.  
Trim ship  
wt.  
lbs. kg  
Pump  
rpm  
Model  
16  
50  
52  
52  
54F  
55F  
56F  
57  
57  
63  
IMP.  
5.2”  
6.0”  
5.75”  
6.5”  
6.5”  
6.5”  
6.3”  
6.4”  
6.87”  
7.5”  
8.2”  
hp  
3
5
7½  
kW  
2.24  
3.73  
5.59  
7.46  
11.19  
14.92  
18.65  
22.38  
29.84  
37.30  
44.76  
lbs.  
95  
kg  
44  
3,500  
3,500  
3,500  
3,500  
3,500  
3,500  
3,500  
3,500  
3,500  
3,500  
3,500  
2” NPT  
25  
35  
50  
50  
75  
75  
95  
95  
12  
16  
23  
23  
35  
35  
44  
44  
55  
55  
75  
2½” flange  
3” flange  
3” flange  
4” flange  
4” flange  
6” flange  
6” flange  
6” flange  
6” flange  
8” flange  
115  
125  
165  
180  
300  
310  
400  
465  
710  
730  
53  
57  
75  
10  
15  
20  
25  
30  
40  
50  
60  
82  
137  
141  
182  
212 120  
323 120  
332 165  
63  
Weld slip-on flange sent at discharge termination for flanged trim. 2” terminates at valve connection.  
Pump Tanks  
Chapter 6: Appendix  
25 of 36  
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Re-circulation Pump Curves and Specifications  
TOTAL HEAD  
KG/  
P2 RECIRCULATING PUMP CURVES - 60 CYCLE  
PSI FEET  
2
CM  
110  
45  
100  
3
40  
90  
2.5  
35  
80  
3 HP  
70  
60  
50  
40  
30  
25  
20  
2
30 HP  
20 HP  
25 HP  
5 HP  
15 HP  
1.5  
7 1/2 HP  
10 HP  
1 1/2 HP  
U.S. GALLONS  
PER MINUTE  
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300  
LITERS  
PER MINUTE  
3500  
4000  
4500  
5000  
500  
1000  
1500  
2000  
2500  
3000  
A0548756  
Pump Information  
Final discharge  
trim size ℵ  
inches  
Pump ship  
wt.  
Trim ship  
wt.  
Pump  
rpm  
Model  
60  
IMP.  
4.6”  
hp  
1½  
kW  
lbs.  
60  
kg  
28  
lbs.  
kg  
1.19 3,500  
2.24 3,500  
3.73 3,500  
5.59 1,750  
7.46 1,750  
11.19 1,750  
14.92 1,750  
18.65 1,750  
22.38 1,750  
2” NPT  
25 12  
50 23  
75 35  
75 35  
95 44  
120 55  
120 55  
165 75  
165 75  
16  
17  
103  
104  
95  
96  
96  
96  
5.2”  
3
2½” flange  
3” flange  
4” flange  
6” flange  
6” flange  
6” flange  
8” flange  
8” flange  
90  
41  
53  
5.3125”  
8.0”  
5
7½  
115  
275  
320  
425  
510  
630  
670  
125  
146  
193  
232  
287  
305  
8.0”  
10  
8.6”  
8.9”  
9.37”  
9.75”  
15  
20  
25  
30  
Weld slip-on flange sent at discharge termination for flanged trim. 2” terminates at valve connection.  
Pump Tanks  
Chapter 6: Appendix  
26 of 36  
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6-4 Parts List  
Recommended Spare Parts  
Part number Quantity  
Description  
A0550190  
A0501073  
A0069286  
A0069285  
A0102396  
A0069538  
A0102394  
1
1
Pressure gauge  
Temperature gauge  
1 (if required) Strainer basket, 12” (approx. 30.5 cm)  
1 (if required) Strainer basket, 18” (approx. 45.7 cm)  
1
1
1
Float valve, 1” (approx. 25.4 mm)  
Plastic ball float, 6” (approx. 15.2 mm)  
Float rod, 10” (approx. 25.4 cm)  
Spare Process Pump Seals and Casing Gaskets  
Process pump  
power  
Pump seals  
Pump casing gaskets  
Pump  
Model  
hp  
3
kW  
2.24  
Part number  
A05100581  
A05100581  
A05100581  
A05100581  
A05100581  
A05100581  
A05100581  
A05104591  
A05104591  
A05104591  
A05104591  
Qty  
Part number Qty  
A0101975  
A0103509  
A0103509  
A0103509  
A0103509  
A0103509  
A0103509  
A0524321  
A0524321  
A0530385  
A0530385  
16  
50  
52  
52  
54F  
55F  
56F  
57  
57  
63  
5
3.73  
7½  
10  
15  
20  
25  
30  
40  
50  
60  
5.59  
7.46  
11.19  
14.92  
18.65  
22.38  
29.84  
37.30  
44.76  
63  
Spare Re-circulating Pump Seals and Casing Gaskets  
Re-circulating  
pump power  
Pump seals  
Pump casing gaskets  
Pump  
Model  
hp  
1½  
3
kW  
Part number  
A0101975  
A0100581  
A0100581  
A0104591  
A0104591  
A0104591  
A0104591  
A0104591  
A0104591  
Qty  
Part number Qty  
A0101582  
A0101975  
A0101975  
A0104830  
A0104830  
A0530386  
A0530386  
A0530386  
60  
16  
17  
103  
104  
95  
96  
96  
1.19  
2.24  
3.73  
5.59  
7.46  
11.19  
14.92  
18.65  
22.38  
5
7½  
10  
15  
20  
25  
30  
96  
A0530386  
Pump Tanks  
Chapter 6: Appendix  
27 of 36  
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6-5 Optional Assembly Detail Drawings  
Tank Support Leg Assembly Detail: 4 Legs  
Pump Tanks  
Chapter 6: Appendix  
28 of 36  
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Tank Support Leg Assembly Detail: 6 Legs  
Pump Tanks  
Chapter 6: Appendix  
29 of 36  
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Tank Support Leg Assembly Detail: 7 Legs  
Pump Tanks  
Chapter 6: Appendix  
30 of 36  
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Tank Ladder Assembly Detail  
Pump Tanks  
Chapter 6: Appendix  
31 of 36  
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Sightglass Assembly Detail  
Pump Tanks  
Chapter 6: Appendix  
32 of 36  
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6-6 Typical Piping Diagrams  
Typical Single Well Cooling Tower Water Pump Tank Piping System  
P
P
Cooling tower  
3/8" drain intended to  
prevent tower freeze-up.  
Do NOT valve.  
Bypass  
3/4" constant bleed  
Tower process water return  
Tower process water supply  
Backflow preventer  
(by others)  
Strainer basket  
Overflow  
Makeup  
Cooling tower  
fan control  
(optional)  
Single  
tower water  
reservoir  
T
Drain  
P-1  
To sewer  
Pump Tanks  
Chapter 6: Appendix  
33 of 36  
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Typical Dual Well Cooling Tower Pump Tank Piping System  
P
P
Cooling tower  
3/8" drain intended to  
prevent tower freeze-up.  
Do NOT valve.  
1/4" swing check valve mounted 12"  
above highest point in return piping  
Bypass  
3/4" constant bleed  
Tower water return  
Tower water supply  
Backflow preventer  
(by others)  
Overflow  
Strainer basket  
Makeup  
Dual well  
tower water  
reservoir  
Cooling tower fan  
control (optional)  
Recirc. pump motor  
control (standard)  
T
T
Cold side  
Hot side  
Return  
Drain  
P
P
P
P-1  
P-2  
P-3  
To drain  
Standby  
Pump Tanks  
Chapter 6: Appendix  
34 of 36  
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Typical Single Well Chilled Water Pump Tank Piping System  
1/4" swing check valve located 12"  
Tower water return and supply  
above highest point in return line  
Bypass  
Chilled water return  
Chilled water supply  
Backflow preventer  
(by others)  
Overflow  
P
P
T
T
Evaporator  
Single chilled  
water reservoir  
Makeup  
Condenser  
Chiller  
Return  
Drain  
T
P
P-1  
To container  
(by others)  
Auto pressure  
regulating valve  
assembly (optional)  
Caution! Do not connect city water makeup if glycol is used in the system  
Caution! Do not connect to draw if glycol is used in the system. Pipe to catch drum or  
overflow tank.  
Pump Tanks  
Chapter 6: Appendix  
35 of 36  
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Typical Dual Well Chilled Water Pump Tank Piping System  
1/4" swing check valve located 12"  
Tower water return and supply  
above highest point in return line  
Bypass  
Chilled water return  
Chilled water supply  
Backflow preventer  
(by others)  
Overflow  
P
P
T
T
Makeup  
Return  
Evaporator  
Dual chilled  
water reservoir  
Condenser  
Chiller  
T
T
Cold side  
P-1  
Hot side  
P-3  
Return  
Drain  
P
P
P
P-2  
To container  
(by others)  
Standby  
Caution! Do not connect city water makeup if glycol is used in the system  
Caution! Do not connect to draw if glycol is used in the system. Pipe to catch drum or  
overflow tank.  
Pump Tanks  
Chapter 6: Appendix  
36 of 36  
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