Thank you for selecting an Iwaki MX Series Magnetic Drive Pump. This instruction manual deals with "Safety instructions", "Outline", "Installation", "Operation" and "Maintenance" sections. Please read through this manual carefully to ensure the optimum performance, safety and service of your pump.
Important instructions For the Safe and Correct Handling of the Pump ● "Safety Instruction" section deals with important details about handling of the product. Before use, read this section carefully for the prevention of personal injury or property damage. ● Observe the instructions accompanied with "WARNING" or "CAUTION" in this manual. These instructions are very important for protecting users from dangerous situations.
Safety instructions WARNING ● Turn off power before work Be sure to turn off all the related power supplies prior to any inspection/ maintenance and installation works. Working on the pump with power ON, any rotating part may catch the hand, finger, hair, or clothes, and it may result in serious injury.
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Safety instructions WARNING ● Use strong ropes (chains) for lifting up the pump Serious injury may result if lifting ropes (chains) break. Check lifting ropes (chains) are strong enough before use. Observe the maximum weight. ● Use eye bolts Chain the pump via eye bolts to lift it up. Otherwise the pump may acciden- tally fall down, resulting in serious injury.
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Safety instructions CAUTION ● Qualified personnel only The pump should be handled or operated by qualified personnel with a full understanding of the pump. Any person not familiar with the product should not take part in the operation or management of the pump. ●...
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Safety instructions CAUTION ● Do not touch the pump or pipe with bare hands Risk of burning. The surface temperature of the pump or pipe rises high along with liquid temperature in or right after operation. Caution ● Grounding Risk of electric shock! Always properly ground the pump. Conform to local electric codes.
Outline 1. Unpacking & Inspection On unpacking the product, check the following points. If you find any problems, contact your nearest distributor. 1. Check the information on nameplate (model code, flow rate, head and voltage) to see if the product is delivered as per order. 2.
Outline 3. Model code MX - 400 C V 6 C - 2 S a. Pump I.D. and motor output Code Pump I.D. (Inlet × Outlet) Motor output 0.37kW 25A × 25A 0.75kW 0.37kW 40A × 40A 0.75kW 402/402H 1.5kW 50A ×...
Outline 7. Overview Motor nameplate Apply the power voltage specified on the nameplate (follow an applicable local power regulation.) Pump unit Not capable of self-priming. "Arrow" label Prime the pump via inlet or The arrow indicates a rotational direction of outlet before operation.
Installation CAUTION ● Do not run pump dry Do not run pump dry (operation without priming water or with a suction valve closed). Otherwise, internal parts are excessively worn by friction heat and fatal pump damage results. * If the pump runs dry by mistake, turn off power and leave it for more than Prohibit one hour to cool it down.
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■ Liquid conditions Slurry The MX series can not send slurry except the pumps with a SiC bearing and a SiC spindle (sliding parts code: A). The A type can handle slurry up to 5% (concentration), 50μm (particle size) and 80Hs (hardness).
Installation 2. Installation/ Pipework/ Wiring If you notice any abnormal or dangerous conditions, suspend operation immediately and inspect/solve problems. WARNING ● Turn off power before work Be sure to turn off power to stop the pump and related devices before work. Make sure no one turns on power by mistake while working on the pump, otherwise it may result in a serious accident.
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Installation ■ Installation Arrange pump and pipework based on the following piping layout for a long period of operation. 1. Discharge pipe ( Support pipework to keep the pump free of piping weigh.) 2. Gate valve 3. Check valve 4. Pressure gauge 5.
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Installation ■ Foundation work • Installation area should be larger than the foot- Foundation bolt Shim print of the pump. Or a plastic base may break Base Liner due to a concentrated load. • If piping vibrates sympathetically with the pump in operation, provide an expansion joint between the pump and the piping to reduce Concrete...
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Installation 7. In flooded suction, install a gate valve on a suction line for easier overhaul & inspection. Keep this valve open at any time during operation. 8. Install a flushing line for cleaning the pump after handling a harmful liquid. 9.
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Installation ■ Discharge line 1. Support discharge piping so as not to directory weigh on the pump. 2. Lay a priming line when the pump is not under a flooded suction system. 3. Pipe resistance rises too high to obtain an intended flow if a discharge pipe I.D. is too long. Always take account of the increment of pipe resistance.
Operation 1. Operational precautions CAUTION ● Never run pump dry or shut off a suction valve during operation. Otherwise the pump fails in a short period. Prohibit ● Check the rotational direction of the pump. Clockwise seen from the motor end is a correct direction.
Operation 2. Before operation Take the next steps to start the pump at the first operation or after a long period of storage. 1. Clean the inside of piping and a supply tank. 2. Retighten flange fixing bolts and base fixing bolts. 3.
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Operation Operation procedure Remarks Do not operate the pump below the minimum discharge capacity. ►The minimum discharge capacity: 10 /min MX-250/-251/-400/-401 20 /min MX-402(H)/-403(H) 50 /min MX-505 • Observe the minimum discharge capacity for the prevention of continuous closed-discharge operation. This rule holds true to not only manual operation but also automatic operation.
Maintenance 1. Troubleshooting If you can not find out the root cause of failure, contact us. Symptom Point to be checked Troubles Cause & When a discharge When a discharge Countermeasures valve is closed. valve is opened. The readings of pres- •...
Maintenance 2. Maintenance & Inspection WARNING ● Access limitation The magnet drive pump has a pair of strong magnets. The strong magnet field could adversely affect the persons who are assisted by electronic devices such as the pacemaker. Prohibited ● Turn off power before service Risk of electrical shock.
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Maintenance ■ Periodic inspection To ensure efficient and smooth operation, perform periodic inspection. Be careful not to damage internal sliding parts and plastic parts when dismantling the pump. The magnetic force of a drive and a driven magnet is strong. Be careful not to catch the finger. Do not put electrical devices such as a watch and a mag card close to those magnets.
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Maintenance ■ Wear limits of bearing and spindle Check wear degree of the bearing and spindle. MX-250/-251/-400/-401 MX-402/-402(H)/-403/-403(H)/-505 Model Before use Wear limit Before use Wear limit Bearing inner diameter Spindle outer diameter * If the clearance between the bearing (#21) and the spindle (#20) exceeds 1 mm, either of them, whichever has greater wear, should be replaced regardless of the wear limit.
Maintenance 3. Spare & Wear parts Appropriate spare parts are necessary for a long period of continuous operation. We recommend that wear parts be always in stock. Place an order for spares with the following information. 1. Part names and part number (See the diagram below.) 2.
Maintenance 4. Dismantlement & Assembly WARNING ● Access limitation The magnet drive pump has a pair of strong magnets. The strong magnet field could adversely affect the persons who are assisted by electronic devices such as the pacemaker. Prohibited ● Turn off power before service Risk of electrical shock.
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Maintenance ■ Disassembly (pump head) 1. Remove hex. socket head bolts from the front casing and remove it from the motor bracket. At this time drain and collect residual liquid and decontaminate wet ends. 2. Pull out the combination of an impeller unit and a magnet capsule unit.
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Maintenance b. MX-402(H)/-403(H)/-505 Turn two lock pins 90 degrees anticlockwise using a flathead screwdriver and then push them off inwards. Tap the end of driver handle Lock pin if necessary. The lock pins can also be turned by using a 4mm hex.
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Maintenance ■ Assembly (pump head) 1. Mount the impeller unit to the magnet capsule Through-hole unit. U-shape hole a. MX-250/-251/-400/-401 Slide the impeller unit down into the magnet capsule unit as far as it will go, locating the U-shape holes under the through holes. The end of press-fitting part Check that the end of press-fitting parts has...
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Maintenance After fitting the impeller unit, insert two lock Lock pin pins all the way seated in the lock pin holes from an inner surface. Use a flathead screwdriver to turn the pins 90 degrees clockwise from the outside while holding the pins from the inside.
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Maintenance 4. Fit an O ring to the front casing. Check that sealing surfaces are free of dust or scratches. Make sure that an O ring is in place and will not be out of a groove. Mount the front casing to the rear casing according to a pair of mating parts (except the MX-400/-505). Note that the MX-402 and -403 have two pairs of mating parts.
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Maintenance ■ Disassembly (loose flange) Inner flange <MX-505> Mating parts 1. Turn the combination of the outer and inner flange Outer flange counter clockwise to detach it from the pump inlet/ Mating parts outlet. Use a belt wrench if necessary. O ring O ring Outer flange...
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TEL: +61 2 9899 2411 FAX: +61 2 9899 2421 Germany / IWAKI Europe GmbH Sweden / IWAKI Sverige AB China (Hong Kong) / IWAKI Pumps Co., Ltd. TEL: +49 2154 9254 50 FAX: +49 2154 9254 55 TEL: +46 8 511 72900 FAX: +46 8 511 72922...
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