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4. Disassembly and Assembly

(Flange mounted Motor type)

- 37 -

• Since the magnet used in the pump is very powerful, be careful not to get your fingers

caught between the elements during the disassembly and assembly processes. Also, pay

attention to prevent metal pieces or metal powder from adhering onto the pump.

• Do not bring any electronic device that may be impacted by strong magnetic power into the

pump magnetic field.

• Prior to disassembly or assembly, close the suction valve and discharge valve.

• The piping and the pump often retain liquid. When a dangerous liquid is handled, wear

protectors (goggles, rubber gloves, etc.) when disconnecting the pipes.

Disassembly

[1] Disassemble only after thoroughly washing out the

liquid inside the pump by use of flushing piping, if

pump has drain port, remove the hex bolt (901.1) and

drain plate (122) and drain the liquid out of the casing.

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 rear retaining hex bolt (901.3) on the

bracket (330). Then, remove the hex bolt (901.8) on

the front casing side as well as the nut (920).

[3] Screw the two attached bolts (size is M12

◊

100) from

the motor side through the tapped hole on the bracket

(330) to push out the split plate (337) so that the plate

is separated from the bracket section.

* Turn the screws alternately. If the split plate (337) has

been sufficiently driven out, hold it by hand and pull it

toward the rear. Then, rotate the plate on the base.

* During disassembly, discharge the liquid from the

casing and clean the inside of the pump.

Caution

Содержание MDE32-100

Страница 1: ...Read this manual before use of product IWAKI Magnetic Drive Pump Model MDE 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 3 Identification Codes 8 4 Specifications and Outer Dimensions 9 5 Names of Parts 12 PUMP OPERATION 15 28 1 Handling Instructions 16 2 Installation 19 3 Piping 20 4 Wiring 24 5 Operation Step 25 MAIN...

Страница 3: ...t 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 in death or serious injury to the operator Caution Ignoring this message can lead to improper handling resulting in injury to the operator or damage to the product ...

Страница 4: ...o servicing the pump Make special provi sions so that no other operator mistakenly turns on the power supply while someone 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 the pump Power supply mistakenly turned on during maintenance may lead to personal injury Each operator must be especially car...

Страница 5: ...ents while the pump is in operation When the pumps are used to transfer the dangerous liquids mentioned as below the pumps always must be checked and watched so 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 Corrosive and stimulus toxic liquids Liquids d...

Страница 6: ... pump Do not stand on the pump Do not stand on the pump or use the pump as a step under any circumstances Otherwise you 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 their surfaces are danger ously hot Arrange grounding Do not operate the pump withou...

Страница 7: ...ne in accordance with local laws and regulations Consult a licensed industrial waste products disposing company The flange type motor is so heavy that it may fall over against the motor following dis assembly of the pump Make sure to support the motor by using a crane or other heavy duty support system Handling of magnet coupling The magnet used in the pump has a very high magnetic power Be carefu...

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 12 6 ...

Страница 9: ...o shows the product was manufactured 5 shows the product was manufactured in the year 1995 e g 2 When first numeral is not 7 5 The third numeral of MFG No shows the year the product was manufactured If you find anything wrong please refer to the dealer you placed your order with 1 Before Using Pump 2 Operating Principle The MDE pump is a magnet driven centrifugal type pump developed for various ap...

Страница 10: ... type motor Motor output 040 4 0kW 055 5 5kW 075 7 5kW 110 11kW 150 15kW A D S X Pump standard I ISO 2 2P 4 4P No core 1 3 5 Special version The number of motor poles Option Without drain no element made to order With drain no element made to order Without drain element made to order With drain element made to order Without option With leak sensor 2 With bearing temperature monitor With bearing cr...

Страница 11: ...2A 65A 40A 208 417 80A 50A 833 16 0 19 0 22 5 27 0 30 0 34 0 38 5 39 0 44 0 49 0 52 5 14 0 18 0 22 0 25 0 29 5 33 0 36 5 40 0 43 5 49 0 52 5 9 5 12 5 19 0 23 5 28 5 33 0 36 0 Temperature range of liquid handled Allowable slurry Motor standard Color of paint ETFE 0 100 C PFA 0 120 C PVDF 0 90 C Hardness Below 80Hs Particle size Below 50µm Concentration up to 5wt 3 phase IEC Foot mounted or Flange m...

Страница 12: ...w 5 5kw 7 5kw 11kw 15kw 1 Applicable to impellers with nominal diameters of 100 110 120 130 140 150 and 160 2 Applicable to impellers with nominal diameters of 170 180 190 and 200 400 410 350 150 540 800 130 250 480 480 430 170 600 900 150 320 400 430 350 150 540 800 130 250 480 500 430 170 600 900 150 320 400 410 350 150 540 800 130 250 480 480 430 100 600 900 150 320 400 430 350 100 540 800 130 ...

Страница 13: ...kw 1 Applicable to impellers with nominal diameters of 100 110 120 130 140 150 and 160 2 Applicable to impellers with nominal diameters of 170 180 190 and 200 390 350 170 600 915 158 450 400 190 660 1015 178 490 440 210 740 1135 198 390 350 170 600 915 158 450 400 190 660 1015 178 490 440 210 740 1135 198 450 400 190 660 1015 178 490 440 210 740 1135 198 450 400 210 660 1015 178 490 440 230 740 11...

Страница 14: ...teel Stainless Steel Stainless Steel Stainless Steel M12 M8 20 M12 35 M12 65 M12 M12 100 1 122 158 159 230 314 1 314 2 330 337 370 400 1 400 2 400 4 Front Casing Drain Plate Rear Casing Rear Casing Cover Impeller Thrust Bearing Thrust Bearing Bracket Split Plate Sleeve Gasket Front Gasket Rear Gasket Drain Fluororesin FCD400 Steel Fluororesin FRP Fluororesin Steel See Note 1 See Note 1 FCD400 Fluo...

Страница 15: ...ss Steel Steel Wire Rod Steel Wire Rod M12 M8 20 M12 20 M8 15 M12 65 M12 M12 100 1 122 158 159 183 212 230 314 1 314 2 321 330 337 350 370 400 1 400 2 400 4 412 Front Casing Drain Plate Rear Casing Rear Casing Cover Support Drive Shaft Impeller Thrust Bearing Thrust Bearing Ball Bearing Bracket Split Plate Bearing Housing Sleeve Gasket Front Gasket Rear Gasket Drain O Ring 1 1 1 1 1 1 1 1 1 2 1 1 ...

Страница 16: ...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 If pump has drain port drain the discharged liquid into a suitable container and follow the applicable local regulations in disposing of the liquid Never allow the discharged liquid to run directly onto the ground N...

Страница 17: ...PUMP OPERATION 1 Handling Instructions 16 2 Installation 19 3 Piping 20 4 Wiring 24 5 Operation Step 25 15 ...

Страница 18: ...tances near the pump 5 If pump is damaged Do not operate a damaged pump otherwise there may be electricity leakage or electric shocks Observe all the following instructions to prevent injuries and accidents 16 1 Handling Instructions Warning a a Do not operate the pump for the circulation of hazardous mediums such as explosive combustible flammable or toxic substances as well as corrosive or irrit...

Страница 19: ...ng and stopping pump operation When the discharge side piping is very long extra attention is required 1 When starting the pump first prime it Then close the discharge valve completely and turn on the power switch After starting up the pump open the discharge valve gradually and set it to the desired operation level 2 When stopping the pump first close the discharge valve slowly Turn off the power...

Страница 20: ...ng the liquid is not circulated The pressure gauge on the discharge side points to 0 point approximately When the magnet coupling disconnects stop the pump within 1 minute If operation is continued with the coupling in the disconnected mode the power of the coupling will decrease considerably 16 Operation within range of drooping head capacity curve In the case of a pump which generates a drooping...

Страница 21: ...n 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 tightenly winded to the motor to lift the pump horizontally Please use lifting chain or rope which has enough strength enduring pump weight To prevent any human body accident caused by the pump drop please ...

Страница 22: ...ment higher than those values indicated in the table should not be applied to the pump Table 9 Piping loadings Forces of discharge piping Forces of suction piping Direction of load Mx My Mz Direction of load Fx Fy Fz kN m 0 89 0 58 0 71 kN m 1 33 0 89 1 07 Dia of pipe mm 50 65 80 Load kN m 0 46 0 35 0 23 kN m 0 95 0 72 0 47 Dia of pipe mm 50 65 80 Load Direction of load Fx Fy compression Fy tensio...

Страница 23: ...e 9 Drain ditch 10 Vacuum gauge 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 pipe diameter D 15 2D 500 mm or above 16 Expansion joint 17 Piping for flushing Discharge side 18 Piping for flushing Suction side ...

Страница 24: ...ly so as not 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 condition NPSHa NPSHr 0 5 m should be established For the NPSHr level refer to the standard performance curve 4 When using a bent pipe on the suction side install a straight pipe with a length of ...

Страница 25: ...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 malfunction 12 In the case of the suction lift method install a foot valve on the suction pipe Note The items 10 11 and 12 above are applied to the suction lift method b b Discharge piping 1 Use a suppo...

Страница 26: ... chance that the liquid in the discharge pipe might freeze 4 Wiring 1 Use an electromagnetic switch that conforms with the specifications 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 installed reasonably distant from the pump Electrical connections ATTENTION The...

Страница 27: ...re starting operation close the discharge 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 and finally damage the pump 7 In the event of a service power failure turn off the power switch immediately and close the discharge valve 8 Make sure that intoler...

Страница 28: ...ir vent valve and flushing piping valve are closed 4 Run the motor instantaneously to check for correct direction of motor rotation The motor should run in the direction indicated with the arrow on the nameplate of the pump If the direction is reversed exchange any two wires of the three phase power wires 26 10 Sound generated by pump The level of sound generated by each type of pump is shown in t...

Страница 29: ...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 the reading of the flowrate meter Caution Total discharge pressure is increased to shut off pressure after start of normal pump operation open discharge valve gradually to set Operation Step Close or open the valve Prime the pump Preparati...

Страница 30: ...on which does 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 1 2 Check Operation Step Close discharge valve gradually Turn off the power and stop pump operation Remarks Do not cause sudden closure with solenoid valve etc otherwise pump may be destroyed by water hammer action which ...

Страница 31: ...MAINTENANCE 1 Causes of Trouble and Troubleshooting 30 2 Maintenance and Inspection 33 3 Spare Parts 36 4 Disassembly and Assembly 37 29 ...

Страница 32: ...ged with foreign matter and liquid passage is blocked Inspection and Measures KStop pump feed sufficient priming water and restart pump KClean foot valve KCheck whether seat is clogged with foreign matter KCheck again whether connecting flange in suction piping is sealed airtight KCheck whether suction liquid level is abnormally lowered KStop pump and use screwdriver to check for easy and smooth r...

Страница 33: ...in suction pipe aInlet section of impeller unit is clogged with foreign matter aAir enters through suction pipe or gasket section aDischarge side of pump is clogged with foreign matter aThere is an air trap or resistance in suction pipe aThere is a portion in discharge pipe that causes resistance or actual head and loss of head are too high aRotation direction is reversed KInspect setup condition ...

Страница 34: ...used aWear or melting of pump bearing aMagnet capsule or spindle is damaged aDynamic balance of drive magnet assembly fluctuates aImpeller and or magnet capsule is in contact with fixing section aWear of motor bearing KCheck whether the voltage and frequency levels are adequate KCheck whether the specific gravity and viscosity of liquid are adequate KImprove air ventilation KEliminate foreign matt...

Страница 35: ... 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 operating it If leakage is detected never try to operate the pump 6 Check to be sure the discharge pressure discharge flow rate and motor power supply voltage do not fluctuate during pump operation If considerable fluctuation of the respective values occurs...

Страница 36: ...in the rear section or in the cylindrical body aAre there cracks in resin of rear section or in cylindrical body aWear of sleeve or cracks Measure dimensions aExpansion of O ring or cracks aWear of thrust bearing Measure dimensions aAre there cracks aAre there cavitation marks aStains or clogging inside impeller aDimensional change in impeller aClogging balance hole aStains in liquid contacting pa...

Страница 37: ... difference Outer diameter O D Thrust face difference 44 2 44 65 45 1 43 66 Unit mm Note If the difference between I D of the bearing and O D of the sleeve exceeds 1mm replace either the bearing or the sleeve whichever is worn out with a new one regardless of the value specified in the table Thrust face difference Thrust face difference ...

Страница 38: ...ed the IWAKI approved drawing b b MDE Type Part Number List 36 No Part Name Material MDE32 160 MDE32 200 MDE40 160 MDE40 200 MDE50 160 1 2 1 2 1 400 1 400 2 400 4 412 Gasket Gasket Drain gasket O ring PTFE PTFE PTFE FKM MDE0112 MDE0112 MDE0149 MDE0577 MDE0112 MDE0171 MDE0149 MDE0577 MDE0112 MDE0112 MDE0149 MDE0577 MDE0112 MDE0171 MDE0149 MDE0577 MDE0112 MDE0171 MDE0149 MDE0577 KALREZ MDE0113 MDE01...

Страница 39: ...the liquid inside the pump by use of flushing piping if pump has drain port remove the hex bolt 901 1 and drain plate 122 and drain the liquid out of the casing 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 rear retaining hex bolt 901 3 on the bracket 330 Then remove the hex bolt 901 8...

Страница 40: ...peller 230 from the split plate and magnet capsule unit 858 by rotating it counterclockwise Keep in mind the power of the magnet Also be careful not to damage the front casing split plate rear casing bearing sleeve thrust bearing impeller etc This part is fixed tyghtly with adhesive If necessary use belt wrench for loosening impeller from spindle 6 Pull the rear casing 158 and rear casing cover 15...

Страница 41: ... make sure there is no metal powder adhered to it before installing it a 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 a Fastening Bolts Fasten the bolts in diagonal order by apply...

Страница 42: ...eller 230 in firmly by using a belt wrench to fix it Fastening torque 38 N m Recommended adhesive Locktight No 242 a product of Nihon Locktight or equivalent If adhesive sticks to the O ring or O ring groove wipe it off immediately Confirm that there is a play of 1 to 2mm on the direction of thrust between the split plate and the impeller 2 Insert the gasket 400 1 into the front casing and install...

Страница 43: ...ecisely vertical to the front casing on the base and install it along the stud bolt 902 Loosen the attached bolts M12 100 alternately to pull the bracket slowly backward to install it finally onto the front casing Note that the magnetic force of the magnet capsule is very strong When assembling be careful not to let your fingers or hand get caught 5 Fix the bracket firmly with the front casing by ...

Страница 44: ...iquid is handled wear protectors goggles rubber gloves etc when disconnecting the pipes b b Disassembly 1 Disassemble only after thoroughly washing out the liquid inside the pump by use of flushing piping if pump has drainport remove the hex bolt 901 1 and drain plate 122 and drain the liquid out of the casing Then clean the inside of the pump Warning Wear protectors goggles rubber gloves etc Cert...

Страница 45: ...wdriver into the joint between the split plate 337 and front casing 100 1 to open the jointed section In this step be careful not to damage the seal surface and gasket 400 1 6 Remove the impeller 230 from the split plate and magnet capsule unit 858 by rotating it counterclockwise Detach the impeller by the use of a belt wrench after fixing the magnet capsule Keep in mind the power of the magnet Al...

Страница 46: ... make sure there is no metal powder adhered to it before installing it a 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 a Fastening Bolts Fasten the bolts in diagonal order by apply...

Страница 47: ... a play of 1 to 2mm on the direction of thrust between the split plate and the impeller 2 Insert the gasket 400 1 into the front casing and install the split plate 337 Screw the stud bolts 902 into the two screw holes in the front casing Then insert the split plate along the stud bolt with the positioning notch of the split plate at the top 3 Install the rear casing cover 159 and rear casing 158 o...

Страница 48: ... an even torque Fastening torque 58 8N m At regular intervals increase the fastening of the parts which fix the bracket to the front casing Fasten them only after the hex head bolt 901 3 is loosened 6 Install the drain plate and fasten the bolts 7 After the support 183 is attached to the base connect the pump unit to the motor by means of the coupling spacer 8 Adjust the centering of the coupling ...

Страница 49: ...AX 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 Singapore Pte Ltd Indonesia IWAKI Singapore Indonesia Branch Malaysia IWAKIm Sdn Bhd Taiwan IWAKI Pumps Taiwan Co Ltd Thailand IWAKI Thailand Co Ltd Hong Kong IWAKI Pumps Co Ltd China IWAKI Pumps Co Ltd Sha...

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