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3. Suction piping

(1) Flooded suction

Flooded suction is recommended.

(2) Pipe diameter

Pipe diameter should be larger than pump inlet bore.

(3) Shortest piping

Employ less bends and shortest piping length.

(4) Straight piping

Employ straight pipe just before pump inlet port.

Pump inlet bore 50A or smaller : Straight pipe of 500 mm or longer

Pump inlet bore 65A or larger : Straight pipe of 8 times as larger than inlet port

For the easy pump dismantling and maintenance, install a removable short length pipe of 300mm or so in straight

piping.

(5) Air pocket in piping

Do not allow any projection in piping where air may be trapped along the suction pipe.

Suction pipe should have an ascending gradient of 1/100 toward the pump.

(6) Different diameter of pipes

If diameter of pump suction port is different from that of suction pipe, use the eccentric reducer pipe. Connect the

eccentric reducer pipe so that upper side is level. Residual air may not go out if it is mounted in reverse.

(7) Gate valve in suction side

In case of flooded suction, install gate valve in suction piping. It is needed when the pump is disassembled and

inspected.

(8) Piping for flushing

Install pump flushing piping in case that the dangerous liquid will be handled.

(9) End of suction piping

The end of suction pipe always should be located 500 mm or more below the liquid level. Take care so that air can

not be sucked in suction piping.

(10) In case of suction lift piping

•

The end of suction piping should be 1 to 1.5 times of pipe diameter or more away from the bottom of suction

tank.

•

Install foot valve or check valve in suction piping.

(11) Pipe support

Install the pipe support so that the weight of pipe can not be directly loaded to the pump.

(12) Pipe connection

Pipes must be connected securely so that the air can not be sucked in. If the sealing is not perfect, air is sucked in,

which causes pump damage.

Содержание MDF-L

Страница 1: ... Suomi Oy IWAKI Norge AS IWAKI France S A IWAKI PUMPS UK LTD IWAKI Schweiz AG IWAKI Austria GmbH IWAKI Holland B V IWAKI Iberica Pumps S A IWAKI Belgium n v FAX 2154 1028 FAX 02 990 42888 FAX 48 24 2346 FAX 8 511 72922 FAX 9 2742715 FAX 66 81 16 61 FAX 1 64 49 92 73 FAX 1743 366507 FAX 26 674 9302 FAX 2236 33469 FAX 297 273902 FAX 943 628799 FAX 1367 2030 IWAKI America Incorporated IWAKI Pumps Aus...

Страница 2: ... the actual operator for quick reference when needed Contents IMPORTANT INSTRUCTIONS 1 3 Safety instructions to prevent personal injuries OUTLINE OF PRODUCT 4 1 Unpacking and inspection 5 2 Description on body and label 5 3 Model code 6 4 Names of parts 8 INSTALLATION 10 1 Installation 11 2 Piping 12 3 Electrical wiring 14 OPERATION 15 1 Precautions on operation 16 2 Operation Starting 17 3 Pump s...

Страница 3: ...may brought if the instructions are not observed or if the pump is wrongly used Following two symbols describe the content to be observed SAFETY SECTION Warning Nonobservance or misapplication of the contents of the Warning could lead to a death or heavy injury of person Caution Nonobservance or misapplication of the contents of the Caution could lead to a injury of person or damage of assets Proh...

Страница 4: ...attention Wear protectors When piping is removed or pump is disassembled assembled wear protective gear such as safety goggles and protective gloves etc Lifting pump When pump is lifted apply chain or belt to eye bolt and motor to keep the pump motor horizontally No remodeling Remodeling of pump may result in serious personal injury or damage of the pump Do not attempt remodeling pump because it i...

Страница 5: ...tion only The use of pump in any application other than those clearly specified may result in the failure or damage of the pump Do not run dry Disposal of used pump Disposal of used or damaged pump must be done in accordance with local laws and regulations Consult a licensed industrial waste products disposing company Ventilate the site When handling the liquid which may generate toxic gas safety ...

Страница 6: ... 4 OUTLINE OF PRODUCT 1 Unpacking and inspection 5 2 Description on body and label 5 3 Model code 6 4 Names of parts 8 ...

Страница 7: ...ide port Motor nameplate Use only the power voltage specified on the nameplate Follow applicable local power regulations Rotation indicator label The arrow indicates the rotating direction of the motor Always make sure that the motor runs in the direction the arrow indicates Refer to chapter Operation Motor Driver This motor provides power to the pump unit Base Pump should be fixed firmly Discharg...

Страница 8: ...amics 99 5 AA Alumina ceramics 99 5 Alumina ceramics 99 5 KK SiC SiC t Material of O ring and gasket V FKM E EPDM A AFLAS FKM AFLAS Fluoro rubber EPDM Ethylene propylene rubber y Code of impeller T V W Standard K L For high head applications u Construction code D Pump can run dry for max one hour E Pump can not run dry i High temp High pressure version No code Standard H For high liquid temperatur...

Страница 9: ... specification and operating condition given to us when ordered If the informed specification and condition will be changed ask us for the possibility of usage before you use the pump 4 Influence by temperature Pump itself is not influenced by temperature change but pumped liquid changes its viscosity vapor pressure chemical corrosion characteristics etc according to the change of temperature Ther...

Страница 10: ...Front casing Rear casing Impeller Drive magnet unit Hex head bolt Hex head bolt Foot support Cover A Cover C Cover B Magnet capsule Motor Cap Q ty Parts name Remarks JIS B 2401 G 135 Only H type Material CF D AA E KK E CC E CA D PTFE V FKM E EPDM A AFLAS Steel STNLS STL Alumina ceramics 95 Alumina ceramics 99 5 SiC 1 1 1 1 1 1 2 1 1 Liner ring High density carbon Impeller thrust Spindle Bearing Mo...

Страница 11: ...ad bolt Hex socket head bolt Foot support Cover A Cover C Cover B Magnet capsule Motor Cap Q ty Parts name Remarks JIS B 2401 G 165 For H1 type For standard type Material KK E AA E CF D PTFE Steel STNLS STL High density carbon Alumina ceramics 99 5 SiC 1 1 1 1 1 1 2 1 1 Liner ring Impeller thrust Spindle Bearing Mouth ring O ring Gasket Eye bolt Rear casing cover 29 1 Retainer ring PTFE 16 17 1 1 ...

Страница 12: ... 10 1 Installation 11 2 Piping 12 3 Electrical wiring 14 INSTALLATION ...

Страница 13: ... around the pump for the back pull out of motor assembly and disassembly of the pump Foundation area must be larger than pump base plate 2 Location Install the pump as close to the tank as possible and at lower position than the tank flooded suction If the pump is installed at the location that the pump suction port comes higher position than the liquid level of tank suction lift style install the...

Страница 14: ...and moment put on the pump should not exceed the figures shown below Pump model MDF L401 422 423 425 Tightening torque 79 N m Z X Y X Z Y Allowable pipe load on pump flange Direction of load Suction flange Fx Fy Pression Tension 0 58 Fz 0 71 Load kN Discharge flange 0 71 0 89 0 58 0 89 0 44 Allowable moment on pump flange Direction of load Suction flange Mx My 0 35 Mz 0 23 Moment kN m Discharge fl...

Страница 15: ...centric reducer pipe Connect the eccentric reducer pipe so that upper side is level Residual air may not go out if it is mounted in reverse 7 Gate valve in suction side In case of flooded suction install gate valve in suction piping It is needed when the pump is disassembled and inspected 8 Piping for flushing Install pump flushing piping in case that the dangerous liquid will be handled 9 End of ...

Страница 16: ...ditions such as discharge head etc 5 Check valve Check valve must be installed in the following cases Discharge piping is longer than 15 to 20 meters Actual head exceeds 15 meters Height difference between liquid level and discharge pipe end exceeds 9 meters When two pumps are used in parallel 6 Air vent If horizontal discharge piping is longer than 15 to 20 meters install air vent on the way 7 Dr...

Страница 17: ... 15 1 Precautions on operation 16 2 Operation Starting 17 3 Pump stopping 17 OPERATION ...

Страница 18: ...stop start is not recommended Stop start repetition must be limited to six times an hour Frequent stop run more than six times an hour may cause accelerated damage of parts and lowered durability Temperature change at starting stopping and operating of pump must be within 80 deg C Fully close the discharge valve when pump is started to avoid water hammer If the pump is operated with discharge valv...

Страница 19: ...ing fully close the discharge valve Note In case air vent piping is not equipped open the discharge valve to repeat momentary run several times 5 Starting pump Start pump with discharge valve fully closed Maximum one minute Confirm that discharge pressure rises to shut down pressure Gradually open discharge valve to get specified pressure capacity Note Pay attention to over load caused by excessiv...

Страница 20: ... 18 1 Troubleshooting 19 2 Maintenance inspection 21 3 Disassembling assembling 25 4 Consumable parts 28 Maintenance ...

Страница 21: ...ing or motor Interchange wiring con nection D i s c h a r g e capacity is small Pressure gauge vacuum gauge indi cates normal figure Strainer is clog ged by foreign matters Remove foreign matters Air pocket in suc tion piping Check and remedy suc tion piping Foreign matters are clogged at impeller inlet Remove foreign matters Air is sucked in from suction pipe or gasket Check connection part of pi...

Страница 22: ...ge motor wiring Lowered power voltage Check voltage or fre quency Overload Check density and vis cosity of liquid Too high ambient temperature Ventilate D i s c h a r g e capacity is rapidly re duced Vacuum gauge indi cates high figure Foreign matters clog suction piping Remove foreign matters Foundation is not perfect Re install the pump Loosened mount ing bolts Re tighten Cavitation occurs Resol...

Страница 23: ... gauge must be opened only when measurement is carried out It must be closed upon the completion of each measurement If the cock remains open during pump operation the meter mechanism may be affected by abnormal pressure caused by water hammer action 4 If a spare pump is available activate it from time to time to keep it ready for use any time 5 Check to be sure there is no liquid leakage in the p...

Страница 24: ...c Consult if abnormality is found Replace if abnormality is found Rear casing Rubbed trace in inner surface If there is no cracks Dirt or clog inside impeller Change of dimension If there is no swelling or cracks in gas ket If there is no rubbed trace Spindle If there is no crack Wear against bearing Dirty inside Cleaning Magnet cap sule If there is no rubbed trace If abnormality is found consult ...

Страница 25: ... first stages of operation but this not abnormal Wear limit of mouth ring Unit mm Wear limits of bearing and spindle Unit mm The step between the surfaces of the mouth ring and the impeller when shipped is 2 mm The wear limit of the mouth ring is reached when this step is reduced to 0 mm Replace the mouth ring then Model Part MDF L 250 MDF L 401 422 423 425 When shipped Time to be replaced When sh...

Страница 26: ...e the rear casing from the foot support and insert the magnet capsule attached to impeller can into the rear casing 2 Rotate the impeller slowly by hand with it positioned on the rear casing Tips are not worn out beyond wear limit The impeller and magnet capsule will continue to rotate smoothly Tips are worn out beyond wear limit The impeller and magnet capsule will not continue to rotate smoothly...

Страница 27: ...casing Drain cap Disassembly 1 Disassemble only after thoroughly washing out the liquid inside the pump by use of flushing piping remove the cap to discharge the liquid from the pump Then clean the inside of the pump Warning Wear protectors goggles rubber gloves etc Certain liquids are dangerous They may hurt your eyes and skin 2 Remove the front casing from the foot support Remove the hex socket ...

Страница 28: ... impeller is tightly pressed in and disconnection is difficult warm the impeller and magnet capsule in hot water about 90 deg C for 5 minutes prior to striking the impeller with the hammer Note on MDF L 422 423 and 425 The impeller is fixed to the magnet capsule by screwing When removing the impeller from the magnet capsule hold the magnet capsule by hand and rotate the impeller counterclockwise f...

Страница 29: ...s difficult warm the magnet capsule in hot water about 90 deg C for 5 minutes before attaching it Note on MDF L 422 423 and 425 1 Attach the impeller to the magnet capsule Rotate the impeller clockwise and tightly screw it in the magnet capsule If it is hard to screw in warm the magnet capsule putting it in hot water of approx 90 deg C for 5 minutes 2 Insert the impeller and the magnet capsule uni...

Страница 30: ...ntioned on page 37 regardless of the time to be replaced shown on above table 3 O ring 23 and gasket 24 must be replaced every time when pump is disassembled regardless of the time to be replaced shown on above table 4 Parts of KK type of MDF L401 are replaced as totally assembled pump head unit No Parts name Parts code Time to be replaced MDF L250 MDF L401 MDF L422 MDF L423 MDF L425 2 19 1 20 Rea...

Страница 31: ... 29 MDF L422 425 MDF L250 ...

Страница 32: ... Suomi Oy IWAKI Norge AS IWAKI France S A IWAKI PUMPS UK LTD IWAKI Schweiz AG IWAKI Austria GmbH IWAKI Holland B V IWAKI Iberica Pumps S A IWAKI Belgium n v FAX 2154 1028 FAX 02 990 42888 FAX 48 24 2346 FAX 8 511 72922 FAX 9 2742715 FAX 66 81 16 61 FAX 1 64 49 92 73 FAX 1743 366507 FAX 26 674 9302 FAX 2236 33469 FAX 297 273902 FAX 943 628799 FAX 1367 2030 IWAKI America Incorporated IWAKI Pumps Aus...

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