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[5] Replacement of spindle

The spindle is pressed into the front casing. Pay attention to the following points when replacing the spindle.

a. Hold the worn spindle in one hand and hit the perimeter of the front casing (cast part) lightly and evenly with a

resin hammer to remove the spindle from the casing. In this step, never strike the seal surface of the front casing

or the spindle.

b. Wipe off the stains on the front casing. Then, insert a new spindle into the casing by hand and strike it gently

with the resin hammer to press it in.

* Do not disassemble the spindle section unless it is seriously worn and needs to be replaced.

* If the spindle does not come off easily, warm the front casing in hot water (about 90 ˚C) before pulling it out for

replacement.

* In the case of the MDF-L250, 401, 422, 423 and 425, the casing and the spindle are integrated. It is not possible to

replace only the spindle.

Assembly

The pump should be assembled by carrying out the steps of disassembly in reverse. Pay attention to the following

points.

Replacement of O ring and gasket

When replacing the O ring or gasket, be sure to install a new one. In addition, see that the O ring or gasket is not

twisted or pressed by another part.

* The sealing section should be cleaned free of dust or scratches before installation.

Fastening Bolts

Fasten the bolts in diagonal order by applying the fastening torque shown in the following table. Apply an equal

torque to each bolt.

- 42 -

Model

MDF-L 250

MDF-L 401

MDF-L 422, 423, 425

MDF-L 505, 507

MDF-L 657, 6510

MDF-L 6515

Type

Hex. head bolt

Hex. socket head bolt

Fastening torque

N·m

12.5

24.5

Size of bolts

35L, M8

65L

40L, M8

70L

M10

40L, M10

75L

M12

50L, M12

90L

M12

50L, M12

100L

M12

90L

Ceramics bearing (AA type)

Apply fluorocarbon grease inside the bearing and the perimeter of the spindle. Otherwise, it will wear out in a short

time.

* Note on MDF-L 250, 401, 505, 507, 657, 6510 and 6515

[1] Install the rear casing onto the foot support.

[2] Attach the impeller onto the magnet capsule. If this is difficult, warm the magnet capsule in hot water (about

90 ˚C) for 5 minutes before attaching it.

Hex. head bolt

42.0

Содержание MDF-L series

Страница 1: ...Read this manual before use of product IWAKI Magnetic Drive Pump Model MDF L Instruction Manual...

Страница 2: ...tual operator for quick reference when needed Contents IMPORTANT INSTRUCTIONS 1 5 Safety Instructions to Prevent Personal Injuries OUTLINE OF PRODUCT 6 14 1 Before Using Pump 7 2 Operating Principle 7...

Страница 3: ...and in the attached instruction manual Always Observe These Safety Instructions Safety Instruction to Prevent Personal Injuries Warning Ignoring this message can lead to improper handling resulting i...

Страница 4: ...takenly turns on the power supply while some one is working on the pump In a noisy or poor visibity environment display a sign near the power supply switch to notify others that someone is WORKING on...

Страница 5: ...that the liquids can not be leaked The operation of the pumps leaking the liquids may result in personal injury and or explosion fire accidents Explosive fire spreading and inflammable liquids Corros...

Страница 6: ...ou may experience a serious injury Do not touch the pump When the pump is used to feed a hot liquid do not touch the pump or the piping with your bare hands during and immediately after operation as t...

Страница 7: ...very high magnetic power Be careful not to allow your fingers to be seized by the magnet or to allow the magnet near any elec tronic device which may be affected by the magnet s power Suspending pump...

Страница 8: ...OUTLINE OF PRODUCT 1 Before Using Pump 7 2 Operating Principle 7 3 Identification Codes 8 4 Specifications and Outer Dimensions 9 5 Names of Parts 11 6...

Страница 9: ...t was manufactured e g 5 5 shows the product was manufactured in the year 1995 If you find anything wrong please refer to the dealer you placed your order with 1 Before Using Pump 2 Operating Principl...

Страница 10: ...FKM E EPDM A AFLAS FKM AFLAS Fluoro rubber EPDM Ethylene propylene rubber T V W Standard K L For high head applications No mark Standard D E Pin point contacting bearing system Standard models for 250...

Страница 11: ...3 200 W 4 8 200 K T V W K L T V W T V W T V W K T V W T V W K T V W T V W 40 40 50 40 50 40 50 40 65 50 80 65 MDF L250 MDF L422 MDF L423 MDF L505 MDF L425 MDF L507 MDF L657 MDF L6510 MDF L6515 20 200...

Страница 12: ...5 L e 143 250 275 d 95 111 106 c 51 58 65 b 150 170 180 a 110 130 140 k 4 12 4 14 j 25 40 50 i 25 40 h 88 102 87 g 122 140 f 115 135 155 Model MDF L505 MDF L507 MDF L657 MDF L6510 MDF L6515 W 298 H 34...

Страница 13: ...emarks 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 Model 401 Model 250 JIS B 2...

Страница 14: ...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 Material KK E AA E CF D PTFE V FKM E EPDM A AFLAS Steel STNLS STL High densi...

Страница 15: ...CF Alumina ceramics 99 5 PTFE V FKM E EPDM A AFLAS Steel STNLS STL High density carbon SiC 1 1 1 1 1 1 2 1 1 Liner ring Rear thrust ring Spindle Bearing Mouth ring O ring Gasket Eye bolt Rear casing c...

Страница 16: ...start up 6 in the Pump operation chapter Motor Driving section This motor provides power to the pump unit Base Setting should be fixed Discharge port Suction port Drain port Liquid discharge port Dra...

Страница 17: ...PUMP OPERATION 1 Handling Instructions 16 2 Installation 21 3 Piping 22 4 Wiring 26 5 Operation Step 27 15...

Страница 18: ...4 Keep the pump away from fire To prevent fire and explosions do not place dangerous or inflammable substances near the pump 5 If pump is damaged Do not operate a damaged pump otherwise there may be e...

Страница 19: ...peration of not longer than 1 hour Longer dry running operations if repeated frequently may result in wear of the sliding parts which rapidly affects the normal functioning of the inner part of the pu...

Страница 20: ...5 Standard H type MDF L250 Standard 0 3 0 16 MPa 0 C 90 100 Temperature MDF L422 423 425 0 45 0 4 MPa 0 C 100 Temperature 422 423 Standard H type MDF L401 Standard 0 3 0 24 MPa 0 C 90 100 Temperature...

Страница 21: ...re or corrosion resistance Pay special attention to changes in liquid characteristics as a result of temperature fluctuation The liquid temperature range for the pump using the O ring supplied by AFLA...

Страница 22: ...ne droops to the left Refer to the standard performance curve to verify the head capacity If the drooping section left side of the head capacity curve is part of the pump operation specifications desi...

Страница 23: ...ion to the following points Pump must be lifted horizontally using two bolts located at pump and motor In the case that there is no lifting bolt at the motor rope or such kind materials should be tigh...

Страница 24: ...ned and worked so that stress and moment higher than those values indicated in the table should not be applied to the pump Z X Y X Z Y 3 Piping 22 Table 9 Piping loadings Forces of discharge piping Fo...

Страница 25: ...e 11 Suction pipe pipe diameter D The horizontal section should be as short as possible and there should be an ascending gradient of 1 100 toward the pump 12 Pipe support 13 Pump drain 14 Suction pipe...

Страница 26: ...t to allow air inside the line Air in the suction pipe may damage the system 3 If suction is not good e g the suction tank is a vacuum the suction head is large or the suction pipe is long the conditi...

Страница 27: ...he suction pipe The end of the suction pipe should be 1 1 5 D D diameter of suction pipe or more away from the bottom of the suction tank Note that the entry of foreign matter may cause the pump to ma...

Страница 28: ...fications voltage capacity etc of the pump motor 2 If using the pump outdoors waterproof the wiring to protect the switches from rainwater 3 Electromagnetic switches and push buttons should be install...

Страница 29: ...arge valve fully to prevent water hammer action upon start up 6 Note that pump operation with the discharge valve closed fully over a long time will raise the temperature of the liquid inside the pump...

Страница 30: ...2 Tighten the flange connecting bolts and the installation bolts on the base 3 After priming the pump close the discharge valve fully Also make sure the air vent valve and flushing piping valve are cl...

Страница 31: ...thin 1 minute open the discharge valve gradually and adjust the discharge pressure while checking the reading of the pressure gauge on the discharge side Otherwise adjust the flow rate while checking...

Страница 32: ...oes not allow for removal of liquid use band heater etc to prevent liquid inside from freezing In event of power failure turn off power switch and close discharge valve M Stoppage 30 1 2 Check Operati...

Страница 33: ...MAINTENANCE 1 Causes of Trouble and Troubleshooting 32 2 Maintenance and Inspection 35 3 Spare Parts 39 4 Disassembly and Assembly 40 31...

Страница 34: ...Speed of pump is too low K Pump rotates in reverse direction K Strainer is clogged with foreign matter and liquid passage is blocked Inspection and Measures K Stop pump feed sufficient priming water...

Страница 35: ...on pipe K Inlet section of impeller unit is clogged with foreign matter K Air enters through suction pipe or gasket section K Discharge side of pump is clogged with foreign matter K There is an air tr...

Страница 36: ...r or melting of pump bearing K Magnet capsule or spindle is damaged K Dynamic balance of drive magnet assembly fluc tuates K Impeller and or magnet capsule is in contact with fixing section K Wear of...

Страница 37: ...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 pump before...

Страница 38: ...a slide scratches in the rear section or in the cylindrical body K Are there cracks in resin of rear section or in cylindrical body K Wear of bearing Measure dimensions K Condition of fixed with impel...

Страница 39: ...pindle Unit mm 37 Model Part Inner diameter of bearing Outer diameter of spindle MDF L 250 Upon Ship ment 18 18 Upon Replace ment 19 17 MDF L 401 422 423 425 Upon Ship ment 26 26 Upon Replace ment 27...

Страница 40: ...Remove 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 Tip...

Страница 41: ...lumina ceramics 99 5 MFL 1394 MFL 1430 MFL 1432 MFL 1433 MFL 0034 MFL 0035 MFL 0036 CF AA KK CF AA KK Magnet capsule 15 AA KK Gasket O ring Spindle SiC CFRETFE FKM EPDM Aflas FKM EPDM Aflas MFL 1437 M...

Страница 42: ...s M 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 p...

Страница 43: ...rewed into thread part of the magnet capsule completely This may cause pump damage 4 Remove the rear casing Insert a flat head screwdriver into the perimeter of the rear casing and pull the rear casin...

Страница 44: ...s of disassembly in reverse Pay attention to the following points Replacement of O ring and gasket When replacing the O ring or gasket be sure to install a new one In addition see that the O ring or g...

Страница 45: ...or the magnet capsule confirm the pump rotating direction is correct before reassembling the impeller and the magnet capsule without O ring If the impeller and the magnet capsule are reassembled with...

Страница 46: ...X 9 2742715 TEL 43 2236 33469 FAX 2236 33469 TEL 47 66 80 66 86 FAX 66 80 66 87 TEL 31 297 241121 FAX 297 273902 TEL 34 943 630030 FAX 943 628799 TEL 32 1430 7007 FAX 1430 7008 Singapore IWAKI Singapo...

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