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Summary of Contents for IWAKI PUMPS MDF-L
- Page 1 IWAKI Magnetic Drive Pump Model MDF-L Instruction Manual (European Edition) Read this instruction manual before use of product This product is protected by patent.
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Page 2: Table Of Contents
Thank you for selecting the IWAKI Magnetic Drive Pump type MDF-L. This instruction manual has been prepared to ensure correct and safe handling of the pump. Please read this manual carefully and thoroughly prior to operating the pump. Pay special attention to the "Safety Instruction to Prevent Personal Injuries," "Warning," and "Caution"... -
Page 3: Important Instructions
SAFETY SECTION For the Safe and Correct Handling of the Pump • Before use of the pump, read carefully this "Safety Section" to prevent accidents and to avoid the damage or loss of other assets. • Observe and abide by the instructions described in this "Safety Section". These instructions are very important for protecting pump users or other persons from hazard or from loss of assets. - Page 4 Safety Section Warning • Magnet field danger The magnet drive pumps contain very strong magnets. The strong magnet field could adversely affect persons who are assisted by electronic devices such as pacemakers etc. • Always turn off power supply prior to maintenance works etc. Pay special attention so that no other operator turns on by mistake the power supply while someone is working on the pump.
- Page 5 Safety Section CAUTION • Attention to magnetic force This pump employs strong magnets. Special attention must be paid not to be injured by attracting force of magnets. Follow the procedure "Disassembling and Assembling" when the maintenance works are done. • Do not run pump dry Do not run pump dry (without liquid).
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Page 6: Outline Of Product
OUTLINE OF PRODUCT 1. Unpacking and inspection ....5 2. Description on body and label.... 5 3. Model code ........6 4. Names of parts........8 - 4 -... -
Page 7: Unpacking And Inspection
1. Unpacking and inspection After unpacking, check the following points to confirm that the delivered product and its accompanying parts and Iwaki Magnet Pump elements are exactly what you ordered. MODEL HEAD (r/min) CAPACITY [1] Do the model and frequency indicated on the nameplate conform to your order? MFG.No. -
Page 8: Model Code
3. Model code Example: MDF-L 42 5 CF V T - D H1 Series MDF-L Type Series Suction × Dischage (mm) Nominal bore size × 25 : 25 × 40 : 40 × 42 : 50 Motor output 0: 0.37 kW 1: 0.75 kW... - Page 9 Operating condition of pump Allowable pressure Graphs below show maximum pressure resistance of pump. Pump discharge pressure should not exceed the max. allowable pressure. MDF-L250 MDF-L401 High temp. type (H) High temp. type (H) 0.24 0.16 Standard type Standard type Temp Temp (deg.
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Page 10: Names Of Parts
4. Names of parts Names of Parts • MDF-L250 and 401 Remarks Parts name Material Q'ty Model 250 Model 401 Front casing Rear casing CFRETFE Impeller Drive magnet unit FERRITE MAGNET+ALUMINUM ALLOY Hex. head bolt M8×65, WITH SW, Q'TY5 M8×70, WITH SW, Q'TY5 STNLS STL M8×35, WITH SW, Q'TY1 M8×40, WITH SW, Q'TY3... - Page 11 • MDF-L422, 423 and 425 20 5 21 15 19 Drawing shows standard type Parts name Q'ty Material Remarks Front casing CFRETFE Rear casing Impeller Drive magnet unit RARE EARTH MAGNET+FCD450 M10 × 40 WITH SW Hex. socket head bolt STNLS STL M10 ×...
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Page 12: Installation
INSTALLATION ..........1. Installation ............2. Piping ........3. Electrical wiring - 10 -... -
Page 13: Installation
1. Installation Example of recommended piping q Discharge pipe w Discharge valve e Check valve r Pressure gauge t Motor y Pump u Flexible joint i Vacuum gauge o Suction pipe !0 Suction valve Within !1 Gate valve !2 Air vent piping !3 Pipe support 1. -
Page 14: Piping
2. Piping 1. Tightening of pipe flange Table below shows the bolt size and tightening torque for the connection of pipe flange to pump flange. Tightening torque is the figure when metallic flange and rubber gasket are used. Pump model Bolt size Tightening torque 42 N ⋅... - Page 15 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...
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Page 16: Electrical Wiring
4. Discharge piping (1) Pipe diameter In case the discharge piping is long, the specified performance may not be obtained because of unexpected pipe resistance if the pipe diameter is the same as pump bore. Calculate the pipe resistance in advance to decide proper diameter of pipe. -
Page 17: Operation
OPERATION ..... 1. Precautions on operation ....... 2. Operation (Starting) ........3. Pump stopping - 15 -... -
Page 18: Precautions On Operation
1. Precautions on operation CAUTION • Never operate pump dry or with suction side valve closed. • Dry running possible model (D type of carbon bearing) can run dry (completely no liquid in pump) continuously one hour max. However rubbing parts are worn in a short time which will result in pump damage in the worst case if pump runs dry continuously exceeding one hour or if it runs dry repeatedly although it is short time. -
Page 19: Operation (Starting)
2. Operation (Starting) 1. Fully close discharge valve and fully open suction valve. 2. Fill liquid into pump • In case of flooded suction, confirm if suction valve is fully opened. • In case of suction lift, prime to fill liquid into suction piping. 3. -
Page 20: Maintenance
Maintenance ........1. Troubleshooting ....2. Maintenance & inspection ....3. Disassembling & assembling ........4. Consumable parts - 18 -... -
Page 21: Troubleshooting
1. Troubleshooting Symptom on pump Troubles Cause Countermeasures When disch. valve When disch. valve closed opened • Lack of priming • Stop pump and reple- Press. gauge & vacu- Liquid can not liquid be sucked um gauge indicate nish pump with liquid to •... - Page 22 Symptom on pump Troubles Cause Countermeasures When disch. valve When disch. valve closed opened • Too high actual • Check actual head of Pressure gauge & Pressure is high but D i s c h a r g e vacuum gauge indi- vacuum is normal.
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Page 23: Maintenance And Inspection
2. Maintenance & inspection Daily inspection Check whether the pump operates smoothly, without generating any abnormal noise or vibration. Check the level of the liquid in the suction tank and the suction pressure. Compare the discharge pressure and electric current measured during operation with the values indicated on the motor nameplate for the verification of normal pump load. - Page 24 Periodical inspection (Once a six months) Parts name Inspection items Countermeasures • If there is no rubbed trace. • If abnormality is found, consult dealer. Drive magnet • If drive magnet housing is correctly • Re-mount the drive magnet to motor shaft or re- mounted or if hex.
- Page 25 Wear limits of bearing and spindle Unit: mm MDF-L MDF-L Model 401, 422, 423, 425 Part When shipped Time to be replaced When shipped Time to be replaced Inner diameter of bearing Outer diameter of spindle * If the difference between the inner diameter of the bearing and the outer diameter of the spindle exceeds 1 mm, either the bearing or the spindle whichever has the greater wear, should be replaced regardless of the values in the above table.
- Page 26 Wear limits of tips of impeller thrust and spindle (only for pumps with D or E at the end of model code) Pumps whose model identification codes have D or E at the end are designed to result in contact between the impeller thrust tip and the spindle tip in the event of an abnormal operating condition (cavitation, dry operation, etc.).
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Page 27: Disassembly And Assembly
3. Disassembly and assembly Warning • Magnetic force is very strong. Pay attention when you handle the magnet capsule or driving magnet so that fingers can not be injured by attraction of magnets. • The persons who are assisted by electronic devices such as pacemakers etc. are prohibited to approach the magnet capsule and drive magnet. - Page 28 Rear casing * 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 (from the impeller side).
- Page 29 (1) Attach the impeller onto the magnet capsule. If this is 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.
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Page 30: Consumable Parts
4. Consumable parts Consumable parts are necessary to be replaced to ensure long, continuous operation of the pump. Replace following consumable parts according to the time to be replaced and notes shown as below. See pages 8, 9 and 29 to identify parts number and parts. Parts code Time to be Parts name... - Page 31 MDF-L250 MDF-L422~425 - 29 -...
- Page 32 U.S.A. : IWAKI America Incorporated TEL : (1)508 429 1440 FAX : 508 429 1386 Australia : IWAKI Pumps Australia Pty. Ltd. TEL : (61)2 9899 2411 FAX : 2 9899 2421 Italy : IWAKI Italia S.R.L. TEL : (39)02 990 3931...
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