1. Manuals
  2. Brands
  3. IWAKI AMERICA Manuals
  4. Water Pump
  5. MDE Series
  6. Instruction manual

IWAKI AMERICA MDE Series Instruction Manual

Magnetic drive pump
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
IWAKI AMERICA
MAGNETIC DRIVE PUMP
MDE SERIES
INSTRUCTION MANUAL

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the MDE Series and is the answer not in the manual?

Questions and answers

Related Manuals for IWAKI AMERICA MDE Series

Summary of Contents for IWAKI AMERICA MDE Series

  • Page 1 IWAKI AMERICA MAGNETIC DRIVE PUMP MDE SERIES INSTRUCTION MANUAL...

  • Page 2: Table Of Contents

    Thank you for having selected an Iwaki America MDE Series magnetic-drive pump. This instruction manual deals with the correct handling, maintenance, inspection, and troubleshooting procedures for the MDE magnetic drive pump. Please read through it carefully to ensure the optimum performance, safety and long service of your pump.

  • Page 3: Unpacking And Inspection

    Also, check each of the following points. If there is a problem or discrep- I W A K I W A L C H E M IWAKI AMERICA ancy, contact your distributor at once. MODEL MDE- HEAD (FT.)

  • Page 4: Identification

    Identification Model Code AA 6 1. Series Name 6. Motor type C: Frame mounted type motor 2. Pump bore symbol (suction ´ discharge) Flange type motor (close-coupled) AA: 1 ½ ´ 1 AB: 3 ´ 1 ½ 7. Magnet Coupling Rating (@ 3600 RPM) 05: 5 HP 15: 15 HP 3.

  • Page 5: Specifications

    PFA type ... 32~248° F ETFE type ... 32~212° F 3. Slurry: Hardness 80Hs or below, grain size maximum 2 mil (50 microns), density maximum 5% wt. Contact Iwaki AMERICA or your distributor for details. Materials of main components Material...

  • Page 6: Handling Instructions

    1. Do not operate the pump dry. The sliding parts used in the MDE series pumps are lubricated and cooled by the fluid being pumped. Never operate the pump dry or with the valves on the suction side closed. Otherwise, the inside of the pump will be damaged.

  • Page 7: Installation, Piping And Wiring

    Contact Iwaki America or your distributor for the pressure rating of your pump if you are using an external flush, casing drain or monitoring options. 4. Handling of slurry liquid.
  • Page 8 3. Insert a spacer between the concrete surface and the bottom of the base to level the pump horizon- tally. Next, put a level on the discharge flange surface to adjust the pump horizontally in the direction of the pump shaft. Also adjust the direction vertical to the pump shaft at the same time by placing a level on the suction flange surface.
  • Page 9 Suction Piping 1. The suction pipe should employ the flooded suction method if possible. The shortest pipe possible, with a minimum number of bends, should be designed. Arrange a proper support along the suction pipe so that the load and thermal stress of the pipe itself are not applied to the pump. 2.
  • Page 10 6. If the diameters of the pump suction port and suction pipe are different, use an eccentric reducer pipe. Connect the eccentric reducer pipe such that the upper part of it is level. Never use a suction pipe with a diameter smaller than that of the pump suction port. 7.
  • Page 11 5. The installation of a gate valve on the discharge pipe is recommended for the adjustment of discharge quantity and for the prevention of motor overload. When installing both a check and a gate valve, the check valve should be positioned between the pump and the gate valve. 6.

  • Page 12: Pump Operation

    Pump Operation Notes on operation. 1. Never operate the pump dry or with the suction side valve (gate valve) closed. Otherwise, the pump will be damaged. 2. In the event of cavitation, stop the pump immediately. 3. If the magnet coupling decouples, stop the pump within a minute. The power of the magnet coupling will be reduced if operation is continued with the coupling disconnected.
  • Page 13 6. In the case of the suction lift method, simultaneously carry out priming and rotate the motor fan using a screwdriver, etc., to rotate the pump and remove any air trapped in the impeller section. 7. Run the motor momentarily to check the direction of rotation. The motor should run in the direction indicated by the arrow sealed on the pump.

  • Page 14: Maintenance And Inspection

    Stopping Operation Check/Operation Item Remarks Close discharge valve gradually. Caution Do not cause sudden closure by using solenoid valve, etc. Otherwise, pump may be damaged by water hammer. Stop motor. Observe whether motor stops rotating slowly and smoothly. If not, check inside of pump. Points to be observed when stopping pump.
  • Page 15 Periodic Inspection Inspection Point Inspection Part Name Countermeasure Interval Outer Every 6 mos. Contact your distributor if Is there scoring? magnet * Inspection abnormality is observed. assembly record should be main- Reinstall housing on motor shaft Is housing mounted normally? tained.
  • Page 16 Inspection Point Inspection Part Name Countermeasure Interval Stain or clogging inside Clean. Every 3 mos. impeller. * Inspection Impeller record should (continued) Dimensional change of impeller. Replace if abnormality is observed. be main- tained. Clogging in balancing hole. Clean. Stain in liquid-contacting sec- Clean.
  • Page 17 Wear limit of outboard and inboard bearing bushing. Part Name Dimension (inches) Upon Replacement Outboard Bore 1.73 in. 1.77 in. Bearing bushing Thrust face-difference 0.08 in. 0.04 in. Inboard Outer diameter 1.73 in. 1.69 in. Bearing bushing Thrust face-difference 2.52 in. 2.56 in.

  • Page 18: Troubleshooting Guide

    Troubleshooting Guide Symptom on Pump Inspection and Trouble With Discharge With Discharge Cause Countermeasures Valve Closed Valve Open l Insufficient ¡ Stop pump, feed priming Pressure gauge and vacuum priming. liquid and restart pump. l Dry Operation gauge indicate 'zero' l Foot valve is ¡...
  • Page 19 Symptom on Pump Trouble With Discharge With Discharge Inspection and Cause Valve Closed Valve Open Countermeasures l Strainer is clogged ¡ Remove foreign matter Needle of vacuum gauge with foreign matter in strainer. indicates high and liquid passage value. is blocked. l Air is trapped in ¡...
  • Page 20 Symptom on Pump Trouble With Discharge With Discharge Inspection and Cause Valve Closed Valve Open Countermeasures l Rotating direction of ¡ Correct motor wiring to Discharge Needle of Needle of quantity is pressure gauge pressure gauge pump/motor is reverse roation. (Clock- low.
  • Page 21 Symptom on Pump Inspection and Trouble With Discharge With Discharge Cause Valve Closed Valve Open Countermeasures l Foundation is inad- ¡ Carry out installation equate. process again. l Anchor bolt is loose. ¡ Retighten bolt. l Suction pipe is ¡ Clean, eliminate cause closed.

  • Page 22: Parts Description And Exploded View

    Parts Description and Exploded View Close-coupled mounted motor type * In the PFA type, the casing liner is integral with the cover. Name of Part Quantity Material Name of Part Quantity Material Remarks Casing, Front FCD400 Casing Cover See Note 1 Casing Liner 400.4 Drain Gasket...
  • Page 23 Frame mounted motor type * In the PFA type, the casing liner is integral with the cover. Name of Part Quantity Material Name of Part Quantity Material Remarks Casing, Front FCD400 Wave Washer Spring Steel Casing Liner 554.1 Spring Washer 1/2 (see note 2) Impeller See Note 1...

  • Page 24: Disassembly And Assembly Of Pump (Close-Coupled Motor Type)

    Disassembly and Assembly of Pump (Close-Coupled Motor Type) (In this section, refer to exploded view drawing on page 20 for listing and position of parts) Caution Since the magnets used in the pump are very powerful, be careful not to let your fingers or hands get caught between them during the disassembly or assembly process.
  • Page 25 4. Push a flat screwdriver into the gap between the casing cover (239) and the casing (1) to CASING COVER, CASING open the sealed section. In this step, becareful not to damage the seal surfaces and inboard gasket (73.1) GASKET 5.
  • Page 26 * To press-fit into impeller: Press-fit the inboard thrust collar (72) into the impeller only after warming the latter for five minutes in hot water of about 195° F. After press-fitting, wipe off water in the threaded hole of impeller to dry it thoroughly (to prevent rust).
  • Page 27 Disassembly and replacement of inboard bear- ing bushing 1. Remove the worn inboard bearing bushing (235) BUSHING, from the inner magnet assembly (230). BEARING INBOARD * The inboard bearing bushing is secured onto the inner magnet assembly by thermoplastic welding. Heat the welded part as in step 1 of ‘Disassembly and replacement of thrust collar’...
  • Page 28 3. Attach the casing (1) to the new casing liner CASING (1.1), being careful about the position of the LINER, CASING drain port. Use a hex socket head bolt (903.1) to secure the part temporarily. * If the casing cannot be attached in place, knock it lightly with a plastic hammer such that the seal section of the casing liner will not be damaged.
  • Page 29 (Refer to the exploded view drawing on pg 20 for parts and locations.) Assembly The pump should be assembled by carrying out the steps for disassembly in reverse, as described below. Keep the sliding and sealed parts clean so that they are free of dust or scratches. When assembling these parts, be sure to attach them in the correct positions.
  • Page 30 POSITIONING COVER, NOTCH 3. Insert the inboard gasket (73.1) into the casing CASING liner (1.1) and install the casing cover (239). * Screw the stud bolts (902) into the two screw holes in the casing (1). Then, guide the casing cover (239) along the stud bolt with the positioning notch of the casing cover (239) at the top.
  • Page 31 6. Secure the frame firmly with the casing liner by tightening both the hex bolts (901.8) and hex nuts (920). Tighten these bolts diagonally to apply an even torque. Required clamping torque: 58.8 N-m (43.4 lb-ft). * At regular intervals, increase the clamping of the parts which secure the frame to the casing.

  • Page 32: Disassembly And Assembly Of Pump (Frame Mounted Motor Type)

    Disassembly and Assembly of Pump (Frame Mounted Motor Type) Refer to the exploded view drawing on pg 21 for parts and locations. Be careful not to get your fingers or hands caught between the magnets during the disassembly or assem- bly process.
  • Page 33 FRAME 4. Screw the two attached bolts (½ - 13 UNC x 4) from the motor side through the screw hole on the frame (19) to push the frame away from the casing cover (239) until they are separated from each other.
  • Page 34 Disassembly and replacement of inboard and outboard thrust collars and bearing bush- ings. Disassembly and replacement of thrust collars 1. Remove the worn thrust collars (72 and 74) from the impeller (230) and casing cover (239). COLLAR, THRUST INBOARD * The thrust collars are secured to the impeller and the casing cover respectively by COLLAR, THRUST thermoplastic welding.
  • Page 35 Disassembly and Replacement of Outboard Bearing Bushing 1. Remove the worn outboard bearing bushing (237) from the casing cover (239). * The outboard bearing bushing is secured onto the casing cover by thermoplastic welding. Heat the welded part as in step 1 of ‘Disassembly and replacement of thrust collar’...
  • Page 36 stains or rust on it, knock it lightly with a plastic hammer or pry apart using a flat head screw- CASING driver. LINER, CASING * The casing is divided into a pair of right and left sections. A single set consists of a right and a left section.
  • Page 37 2. Remove the retaining ring (932.1) from the outer magnet assembly (232) and then remove RETAINING RING the outer magnet assembly from the drive shaft. 3. Remove the retaining ring (932.2) and the mechanical coupling. Then, remove the drive shaft (12) using an arbor press. Inspect the shaft and bearings for any abnormality.
  • Page 38 Assembly The pump should be assembled by following the steps for disassembly in reverse, as described below. Refer to the exploded view drawings on pages 20-21 for parts and locations. Keep the sliding and sealed parts clean so that they are free of dust or scratches. When asssembling these parts, be sure to attach them in the correct positions.
  • Page 39 POSITIONING COVER, NOTCH Insert the inboard gasket (73.1) into the casing CASING liner (1.1) and install the casing cover (239). * Screw the stud bolts (902) into the two screw holes in the casing liner. Then, guide the casing cover along the stud bolt with the positioning notch of the casing cover at the top.
  • Page 40 * At regular intervals, increase the clamping of the parts which secure the frame to the casing liner. Clamp them only after the hex head bolt (901.3) is loosened from the baseplate. 8. After the rear support (183) is attached to the base, connect the pump to the motor by means of the coupling.

  • Page 41: Spare Parts

    Spare Parts Appropriate spare parts are necessary to ensure continuous operation of the pump over a long time. Consumable parts, in particular, should always be kept on hand. When placing orders, supply the following information: 1. Name of part and part number (according to this instruction manual). 2.

  • Page 42: External Dimensions And Weights

    External Dimensions and Weights Close-coupled Mounted Motor Type Close Coupled Units (5-15 HP) Pump Dimensions inches (mm) Model Size MDE-AA6 1.5 x 1.0 x 6 6.50 6.28 3.00 4.33 15.09 14.08 0.63 4.00 MDE-AB6 3 x 1.5 x 6 (165.1) (159.5) (76.0) (110.0)
  • Page 43 Frame Mounted Motor Type HOLES Pump Weights lbs. (kg.) Motor Model MDE-AA6MDE-AB6 MDE-AA8 133 (60.5) 140 (63.6) 148 (67.3) 134 (60.9) 141 (64.1) 149 (67.7) 10.0 137 (62.3) 144 (65.5) 151 (68.6) 15.0 140 (63.3) 147 (66.8) 156 (70.9) 20.0 140 (63.6) 147 (66.8) 158 (71.8)
  • Page 44 5 BOYNTON ROAD HOPPING BROOK PARK HOLLISTON, MA 01746 TEL: 508-429-1440 FAX: 508-429-1386 E-MAIL: IWAKIAMERICA@IWAKIAMERICA.COM ON THE INTERNET AT: WWW.IWAKIAMERICA.COM...

This manual is also suitable for:

Mde-aa6Mde-aa8Mde-ab6

Table of Contents