Thank you for selecting an Iwaki MX-F 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. Contents Important instructions ························································...
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 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. If your working area is noisy or Turning off power dark, let other people know about the situation by displaying a notice such as "POWER OFF (Maintenance)"...
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Safety instructions CAUTION ● Restriction on pump operator The pump must be handled or operated by a qualified person with a full understanding of the pump. Prohibited ● For a specified application only Use of the pump in any application other than those clearly specified may result in personal injury or property damage.
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Safety instructions CAUTION ● Earthing Risk of electrical shock. Do not run the pump without earthing. Secure earth protection to reduce the risk. Grounding ● Install an earth leakage breaker Risk of electrical shock. Do not run the pump without a leakage breaker. Secure a leakage breaker to reduce the risk.
Outline 1. Unpacking & Inspection On unpacking the product, check the following points. If you find any problems, contact your nearest dis- tributor. 1. Check the information on nameplate (model code, flow rate, head and voltage) to see if the product is delivered as per order.
Z : Specific gravity limit 1.8-2.0 e. Motors No code: Totally-enclosed-fan-cooled motor for indoor use Totally-enclosed-fan-cooled motor for outdoor use Increased safety motor f. Motor power voltage MX-F250/-F251/-F400/-F401 MX-F402/-F403 (3-phase standard motor) (3-phase IEC motor) 2: 200/220V 2: 200/220V 4: 380/400/415V (50Hz) or 440V (60Hz)
Outline 7. Overview Motor nameplate Pump unit Apply the power voltage specified on Not capable of self-priming. Prime the pump the nameplate. via inlet or outlet before operation. ( Follow an applicable local power regu- lation.) "Arrow" label Outlet The arrow indicates a rota- tional direction of the motor.
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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The MX-F is not self-priming pump. Prime the pump every time the pump is operated. Do not run pump dry (operation without liquid.), or internal parts seizing or excessive wear results. ■ Maximum operating pressure Do not allow a discharge pressure to exceed the limits below. Model MX-F250 MX-F251 MX-F400 MX-F401 MX-F402/-F403 Pressrue limits (MPa) 0.25...
Installation 2. Installation/ Pipework/ Wiring Upon becoming aware of danger or abnormality during operation, terminate work 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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Tighten bolts diagonally at even torque. Model Bolt size Tightening torque MX-F250/-F251/-F400/-F401/-F402/-F403 20N•m ■ Piping load and momentum Try not to apply a heavy load to the inlet and outlet flanges. Permissible piping weight and moment to the pump are as below.
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Installation Permissible stress to outlet flange Permissible stress to inlet flange Pipe dia. (mm) Pipe dia. (mm) 40, 50 Load Load Load direction Load direction 0.10 0.15 0.10 0.10 0.10 0.15 0.15 0.20 Fy: compression 0.10 0.10 0.10 0.15 Fy: tension 0.10 0.15 Permissible moment to outlet flange...
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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.
Caution ● The surface temperature of the pump or pipe rises high along with liquid temperature in or right after operation. Take preventive measures. Model Liquid temperatuer Surface temperature (at ambent 40°C) MX-F250/-F251/-F400/-F401/-F402/-F403 80°C 80°C 危 険 ● Noise level Model...
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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Remarks Do not operate the pump below the minimum discharge capacity. ►The minimum discharge capacity: 10 /min (MX-F250/-F251/-F400/-F401), 20 /min (MX-F402/-F403) • 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 Prohibited such as the pacemaker. ● Turn off power during maintenance work 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.
Maintenance ■ Wear limits of bearing and spindle Check wear degree of the bearing and spindle. MX-F250/-F251/-F400/-F401 MX-F402/-F403 Model Before use Wear limit Before use Wear limit Bearing inner diameter Spindle outer diameter 1. Above values show wear limit of the bearing and spindle.
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 Prohibited such as the pacemaker. ● Turn off power during maintenance work Risk of electrical shock.
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3. Detach the impeller unit from the magnet capsule unit as necessary. Be careful not to damage the units. a. MX-F250/-F251/-F400/-F401 Slightly tap the back of the impeller unit by a plas- tic hammer while holding the magnet capsule unit.
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Maintenance b. MX-F402/-F403 Turn two lock pins 90 degrees anticlockwise using a flathead screwdriver and then push them off inwards. If it is hard to do so, slightly tap the end of Lock pin driver handle. The lock pins can also be turned by using a 4mm hex.
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Maintenance ■ Assembly 1. Mount the impeller unit to the magnet capsule unit. Through-hole a. MX-F250/-F251/-F400/-F401 U-shape hole Slide the impeller unit down into the magnet cap- sule unit as far as it will go, locating the U-shape holes under the through holes.
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Maintenance Lock pin After fitting the impeller unit, insert two lock 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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(except the F400). Note that the F402 and F403 have two pairs of them. 5. Fasten the front casing to the motor bracket. Tighten the hex. socket bolts evenly. Tightening torque is shown below. Model Tightening torque MX-F250/-F251/-F400/-F401 11.8N•m MX-F402/-F403 14.7N•m - 37 -...
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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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