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Series A-C 2000

CLOSED-COUPLED PUMPS

INSTRUCTION MANUAL

P2002569

REVISION

Содержание A-C 2000 Series

Страница 1: ...Series A C 2000 CLOSED COUPLED PUMPS INSTRUCTION MANUAL P2002569 REVISION B ...

Страница 2: ...to assist operating personnel by providing information on the characteristics of the purchased equipment It does not relieve the user of the responsibility of using accepted engineering practices in the installation operation and maintenance of this equipment ...

Страница 3: ...y and reassembly procedures 12 Sectional view drawing 15 Ordering parts 16 General Pump Instructions Introduction 17 Installation Temporary storage 17 Location 17 Foundation 18 Baseplate setting 18 Grouting procedure 18 Suction and discharge piping 19 Stuffing box 21 Packing 22 Packing lubrication 22 Stuffing box operating pressure 22 Mechanical seals 22 Operation Pre start checks 23 Priming 23 St...

Страница 4: ...ntative Always specify the exact product type and identification code when requesting technical information or spare parts Safety WARNING The operator must be aware of safety precautions to prevent physical injury Any pressure containing device can explode rupture or discharge its contents if it is over pressurized Take all necessary measures to avoid over pressurization Operating installing or ma...

Страница 5: ...ical hazards are indicated by the following specific symbol ELECTRICAL HAZARD These are examples of other categories that can occur They fall under the ordinary hazard levels and may use complementing symbols Crush hazard Cutting hazard Arc flash hazard Hazard level Indication DANGER A hazardous situation which if not avoided will result in death or serious injury WARNING A hazardous situation whi...

Страница 6: ...rs in the work area Avoid all electrical dangers Pay attention to the risks of electric shock or arc flash hazards Always bear in mind the risk of drowning electrical accidents and burn injuries Safety equipment Use safety equipment according to the company regulations Use this safety equipment within the work area Hard hat Gas mask Safety goggles preferably with side shields Hearing protection Pr...

Страница 7: ...ash the skin and eyes Follow these procedures for chemicals or hazardous fluids that have come into contact with your eyes or your skin Environmental safety The work area Always keep the station clean Waste and emissions regulations Observe these safety regulations regarding waste and emissions Appropriately dispose of all waste Handle and dispose of the processed liquid in compliance with applica...

Страница 8: ...ly Ex approved spare parts and accessories authorized by an Ex approved Xylem Inc representative are used in Ex approved products Limitations The warranty does not cover defects caused by these situations Deficient maintenance Improper installation Modifications or changes to the product and installation made without consulting a Xylem authorized representative Incorrectly executed repair work Nor...

Страница 9: ...y Failure to properly lift and support this equipment can result in serious physical injury and or equipment damage Lift equipment only at the specifically identified lifting points Lifting devices such as eyebolts slings and spreaders must be rated selected and used for the entire load being lifted Crush hazard The unit and the components can be heavy Use proper lifting methods and wear steel toe...

Страница 10: ...ding lead which is known to the State of California to cause cancer or birth defects or other reproductive harm For more information go to www P65Warnings ca gov NOTICE This product is not intended for potable water applications The pump is intended for use with these pumped fluids Unheated domestic and fresh water Boiler feed water Condensate General liquid transfer Rotation Pump rotation is cloc...

Страница 11: ... orders for more than one pump For example if an order called for six pumps all pumps would have the same first three sets of digits and the last digit will change to identify each of the six e g 1 21938 1 1 1 21938 1 2 etc The identification number is a number which the end user of the pump requests to be put on the rating plate to identify the pump in his operation e g CWP 11 stands for Chilled ...

Страница 12: ...re 5 Impeller Removal Figure 5 Impeller Removal Figure 6 Removing Mechanical Seal Dismantling the stuffing box A Pumps with mechanical seals 1 Remove spacer sleeve 1 154 0 2 Remove the two nuts holding the gland 6 014 0 to the stuffing box 2 036 0 3 Pull the stuffing box cover off the shaft assembly NOTE On the larger Series A C 2000 pumps it will be necessary to remove the capscrews holding the s...

Страница 13: ...ud 4 908 0 into the end of the motor shaft using a locking compound on the stud B Pumps with mechanical seals 1 Install the rotating and stationary elements of the mechanical seal 6 400 0 on the shaft sleeve 1 009 0 being certain that the two wearing surfaces face each other Position the seal on the sleeve according to the G dimension found in Figure 7A Figure 7B G Setting dimensions 2 Place the s...

Страница 14: ...ps with mechanical seals tighten gland evenly against the stuffing box Final assembly NOTE When assembling the rotating assembly to the casing be certain that the pump feet are parallel to the motor feet 1 Place the 0 ring casing seal 2 914 0 around the 0 ring seat on the stuffing box cover 2 Carefully slide the motor motor adapter stuffing box assembly into the casing being sure not to pinch the ...

Страница 15: ...15 Sectional view drawing ...

Страница 16: ... 2 sets of wearing rings 1 set of gaskets and 0 rings 2 mechanical seals complete Parts should be ordered as far in advance of their use as possible since circumstances beyond the control of the company may reduce existing stock Not all parts are stocked and must be manufactured for each order To facilitate rapid handling of your order for spare parts be sure to include the following information 1...

Страница 17: ...NOT TO DAMAGE ANY AUXILIARY PIPING OR CONTROLS WHEN MOVING PUMPS Horizontal pumps and drivers are normally shipped from the factory mounted on a baseplate and painted with primer and one finish coat Couplings may either be completely assembled or have the coupling hubs mounted on the shafts and the connecting members removed When the connecting members are removed they will be packaged in a separa...

Страница 18: ...en prepared with anchor or hold down bolts extending up ready to receive unit It must be understood that pump and motor have been mounted and rough aligned at the factory If motor is to be field mounted consult factory for recommendations Goulds Water Technology cannot assume responsibility for final alignment 1 Use blocks and shims under base for support at anchor bolts and midway between bolts t...

Страница 19: ... support When expansion joints are used in Figure 9 Setting baseplate and grouting the piping system they must be installed beyond the piping supports closest to the pump Tie bolts should be used with expansion joints to prevent pipe strain Do not install expansion joints next to the pump or in any way that would cause a strain on the pump resulting from system pressure changes lt is usually advis...

Страница 20: ...rger than the opening depending on piping length Suction piping for horizontal double suction pumps should not be installed with an elbow close to the suction flange of the pump except when the suction elbow is in the vertical plane A suction pipe of the same size as the suction nozzle approaching at any angle other than straight up or straight down must have the elbow located 10 pipe diameters fr...

Страница 21: ...l to avoid air pockets Globe valves should not be used particularly where NPSH is critical 4 The pump must never be throttled by the use of a valve on the suction side of the pump Suction valves should be used only to isolate the pump for maintenance purposes and should always be installed in positions to avoid air pockets Discharge piping If the discharge piping is short the pipe diameter can be ...

Страница 22: ...erature is above 32 F and below 160 F 3 Suction pressure is below 75 psig 4 Liquid has lubricating qualities 5 Liquid is non toxic and non volatile External liquid lubricant When the liquid being pumped contains solids or is otherwise not compatible with packing materials an outside supply of seal liquid should be furnished In general external injection liquid from an outside source is required wh...

Страница 23: ...al provided the filter is not clogged 2 Clear clean water can be supplied from an external source in some installations City water can be used if there is an air break between the water supply and the water being provided to the pump Various municipal ordinances require this break to prevent contamination of the city water supply Operation Pre start checks Before initial start of the pump make the...

Страница 24: ...Consult manufacturer s instructions for special operations 3 Close seal liquid valves If pumped liquid is dirty or if leakage is to be prevented these lines should always be left open 4 Open drain valves as required Freezing protection Pumps that are shut down during freezing conditions should be protected by one of the following methods 1 Drain the pump remove all liquids from the casing 2 Keep f...

Страница 25: ...The true motor brake horsepower once the efficiency is determined from dynamometer tests can also be calculated from the following formula Bhp kW input x Eff 0 746 Where Bhp Brake horsepower delivered kW input Real input power kW Eff Motor efficiency Pump efficiency Pump efficiency can be calculated by the formula Pump efficiency Total head x GPM x specific gravity 3960 x Bhp Vibration The accepta...

Страница 26: ... off or plugging inlet and putting line under pressure A gauge will indicate a leak with a drop of pressure 9 Air leaks in stuffing box Increase seal lubricant pressure to above atmosphere 10 Speed too low See item 5 11 Discharge head too high See item 4 12 Suction lift too high See item 3 13 Impeller partially plugged See item 7 14 Cavitation insufficient NPSH depending on installation a Increase...

Страница 27: ...ere it will provide adequate pressure despite condition Better to provide gas separation chamber on suction line near pump and periodically exhaust accumulated gas See item 14 26 Too small impeller diameter Probable cause if none of above See item 20 Not enough pressure CAUSES CURES 27 Incomplete priming Free pump piping and valves of all air If high points in suction line prevent this they need c...

Страница 28: ...lignment Examine pump for friction between impeller and casing Replace damaged parts 40 Shaft bent due to damage through shipment operation or overhaul Check deflection of rotor by turning on bearing journals Total indicator run out should not exceed 0 001 on shaft and 0 004 inch on impeller wearing surface 41 Mechanical failure of critical pump parts Check bearings and impeller for damage Any irr...

Страница 29: ... properly sealed at all joints and connected to both the suction and discharge should exclude outside liquid Therefore it should not be necessary to go beyond the bearings stuffing box and coupling when servicing the pump Bearing lubrication grease Grease lubricated ball bearings are packed with grease at the factory and ordinarily will require no attention before starting provided the pump has be...

Страница 30: ...e lubricators are available When using a grease lubricator grease pressure to the stuffing box should be equal to the pump discharge pressure Packing All pumps are packed before shipment unless otherwise requested All packings used are the highest grade material Before pump is put into operation check the condition of the packing If pump is installed within 60 days after shipment the packing will ...

Страница 31: ... below It is not feasible to include detailed instructions for all mechanical seals in this booklet because of the almost unlimited number of possible combinations and arrangements Instead seal manufacturer s instructions will be included as a separate supplement to this book where required 1 Mechanical seals are precision products and should be treated with care Use special care when handling sea...

Страница 32: ...ry If misalignment recurs frequently inspect the entire piping system Unbolt piping at suction and discharge flanges to see if it springs away thereby indicating strain on the casing Inspect all piping supports for soundness and effective support of load Every Year Remove the rotating element Inspect thoroughly for wear and order replacement parts if necessary Check wearing clearances Remove any d...

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