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Sanwa Hydrotech MEK Series Instruction Manual

Stainless steel magnet drive pump, self-priming turbine pump
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STAINLESS STEEL MAGNET DRIVE PUMP
SELF-PRIMING TURBINE PUMP
INSTRUCTION MANUAL
This instruction manual is for the person who actually operates the pump.
Please be sure this manual is provided to and understood by the operator on
the scene. If the instruction manual is also needed by personnel who install
the pump or by a staff of a plant constructor, please let us know. We will
supply another copy.
Machine Number
To the on-site operator: please enter the pump's code and lot number above and for future
parts order and inquiry.
SANWA HYDROTECH CORPORATION
Manual No.MEK01C(E)/1612ATEX
MEK
Requirements
Code
Original Instruction
Europe Edition
MFG No.

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Summary of Contents for Sanwa Hydrotech MEK Series

  • Page 1 We will supply another copy. Machine Number Code MFG No. To the on-site operator: please enter the pump’s code and lot number above and for future parts order and inquiry. SANWA HYDROTECH CORPORATION...
  • Page 2 Safety Sanwa Hydrotech does not assume responsibility for damage or injury re- sulting from failure to follow the safety instructions contained herein. Be sure therefore to follow the instructions for safe and correct usage when op- erating, performing maintenance, or inspecting the pump.
  • Page 3 WARNING Situation where improper handling or operation in hazardous location could result ignition or explosion. Items indicated by could also lead to serious consequences according to the circumstances. Be sure therefore to strictly observe items indicated by any of these labels. DANGER General Do not use the pump in the presence of explosive gas or powder.
  • Page 4 WARNING General Do not insert your fingers or any other objects in the openings of the pump motor. Doing so could result in electrical shock, injury or fire. Installation and Adjustment Absolutely do not place inflammable materials in the area surrounding the pump.
  • Page 5 Do not use a damaged motor. Doing so could result in injury or fire. The customer should not modify the pump under any circumstances. Doing so could result in unexpected accidents. Sanwa Hydrotech shall not be responsible for accidents or damage resulting from equipment modified by the customer.
  • Page 6 ATTENTION Piping and Wiring Be sure to connect the power cable in accordance with instruction manual for the motor and the connection diagram in the terminal box. Failure to do so could result in electrical shock or fire. Do not forcibly bend, pull or crimp the power cable or motor lead wires. Doing so could result in electrical shock.
  • Page 7 WARNING WARNING If the temperature of pumping liquid is very low, the casing, the rear casing and the frame adapter would be very cold. So do not touch them. Otherwise person will suffer an injury in a body. If the temperature of pumping liquid is very high, the casing, the rear casing and the frame adapter would be very hot.
  • Page 8 If the pump is fitted with a heating jacket, the temperature of heating medium must not exceed the maximum allowable surface temperature of the pump. Operation When a pump is operated while not been completely filled, an ignition source can develop due to heat input. The pump must be completely filled. If cannot ensure that, appropriate monitoring must be taken.
  • Page 9 Unit Description Units described in this instruction manual are as per the following table, Category Unit abbereviation Unit description Meter Length µm Micrometer Millimeter m3/hr Cubic meter per hour Flow L/min Liter per a minute Pressure MPaG Megapascal gauge °C Celsius Temperature °F...

  • Page 10: Table Of Contents

    Contents Introduction for safety Instructions for Safe Usage..........11 Equipment Failure / Accident Prevention and Safe Operation Checks ...................11 Precautions When Pumping Special Liquids ............12 A General Description of The Machinery ............12 A Description of The Intended Use of The Machinery ........12 Transport and Unpacking ...........13 1.
  • Page 11 Declaration of Conformity ..........19 Pump Installation ..............22 1. Installation ....................22 2. Piping ......................23 3. Wiring ......................24 4. Earthing .......................25 Operation ................26 1. Pre-Operation Inspections (Be sure to turn the power off before performing inspections!) ...............26 2. Operation .....................26 Operation and handling ................26 3.

  • Page 12: Instructions For Safe Usage

    Instructions for Safe Usage In order to use your Sanwa Magnet Drive Pump in the manner for which it was designed, be sure to read through and get a thorough understanding of the contents of this manual and the installation instructions before attempting to install, operate, perform maintenance or inspections.

  • Page 13: Precautions When Pumping Special Liquids

    Precautions When Pumping Special Liquids Sanwa pumps are used in various industries. Our stainless steel magnet drive pumps in particular are frequently used for pumping hazardous, explosive or inflammable liquids. Mishandling in any of these cases could lead to serious consequences such as bodily injury, loss of life or property damage.

  • Page 14: Transport And Unpacking

    Transport and Unpacking 1. Transport ATTENTION When transporting the pump, be careful not to drop it or let it fall. Take the appropriate method, such as picking up by two people or lifting by belt, to avoid risk. Make sure the eyebolts (if the pump is equipped with them) are used to secure the pump during transportation.

  • Page 15: Preliminary Check

    Preliminary Check When your pump is delivered, you should check the following items: Are all of the accessories included in the package? ATTENTION Check the name plate to make sure the merchandise is as ordered. Check to make sure the pump has not been damaged or the bolts and nuts not loosened during transport.

  • Page 16: Pump Model Identification

    Pump Model Identification 1. Pump Size and Motor MODEL SUCTION (mm) DISCHARGE (mm) MOTOR (FRAME) 4Pole , 0.25 kW (71) 4Pole , 0.37 kW (71) 2Pole , 1.5 kW (90) 2Pole , 2.2 kW (90) 2Pole , 3.0 kW (100) 2Pole , 4.0 kW (112) Motor “4Pole, 0.55kW(80) for MEK251”...

  • Page 17: Pump Specification

    Pump Specification 1. Design Pressure PUMP SIZE DESIGN PRESSURE (MPaG) 2. Casing Piping Connection Suction and Discharge : Rc threads (taper pipe threads JIS B 0203/ISO 7-1) Drain, Priming inlet and Air vent : Rc threads (taper pipe threads JIS B 0203/ISO 7-1) 3.

  • Page 18: Parts Specifications Of Liquid Temperature Range

    6. Parts Specifications of Liquid Temperature Range Parts RANGE -20~+120°C(-4~248°F) SHAFT STANDARD MODEL STANDARD MODEL MAGNET COUPLING (MAGNET: Nd) FRAME ADAPTER STANDARD MODEL Note: When temperature fluctuates between extreme high and low, please consult your distributer. 7. Ambient Temperature Ambient temperature: min. -20 ~ max. 40 °C (-4 ~ max. 104°F) 8.

  • Page 19: Marking

    11. Marking An example of ATEX equipment marking is shown blow. The actual classification of the pump will be engraved on the name plate. For Gas atmosphere II 2 G c IIC T3/T4 [1] [2] [3] [4] [1] Equipment Group: II (non-mining) [2] Category: 2 [3] Gas: G [4] Protection measure: c construction safety...

  • Page 20: Declaration Of Conformity

    Declaration of Conformity...

  • Page 23: Pump Installation

    Pump Installation 1. Installation Position of the pump should be finalized after considering pump suction capacity. If suction head is not enough, cavitations and abnormal vibration/noise will occur. Pump should be installed in a place which provides sufficient space for maintenance and inspections.

  • Page 24: Piping

    ATTENTION Before attempting to hoist the pump, find out weight of the pump including the motor, and use a rope or hoisting equipment capable of supporting the weight load in order to prevent the pump from falling. 2. Piping Horizontal suction piping should gradually rise toward the inlet port of the pump.

  • Page 25: Wiring

    [Suction for Positive Pressure] Gate Valve Compound Pressure Gauge Gauge Piping Gate Support Valve Suction Piping Fastener (required for lengthly piping) Suction Lift Height (See Page.21) [Suction for Negative Pressure] Min. piping diameter x 2 Screen 500mm Foot Valve Min. piping diameter x 1.5 Min.

  • Page 26: Earthing

    4. Earthing Pumps that have been supplied in accordance to the ATEX Directive (2014/34/EC) will be identified by a label with the following symbol on it; Once pump has been installed, the earth of motor terminal box should be wired to the earth with a suitable earthing cable. In addition, please carry out the bonding of the plumbing, if necessary.

  • Page 27: Operation

    Operation 1. Pre-Operation Inspections (Be sure to turn the power off before performing inspections!) 1. Tighten flange bolts and machine base bolts. 2. Supply liquid after thoroughly cleaning inside of piping and tanks. 3. Check if you can turn the motor’s fan by hand or thin stick without supplying power.

  • Page 28: Operation And Handling

    NOTE Do not operate the pump with the discharge valve shut-off. Do not operate the pump at the flow that is lower than Minimum Continuous Flow. Otherwise the temperature of pump surface will increase, and may exceed the maximum allowable temperature. Minimum Continuous Flow is indicated in datasheet.
  • Page 29 ATTENTION High Temperature If pumping hot liquids, do not place your hands or other parts of your body near the casing or frame adapter. Doing so could result in skin burns. No-Load Operation Prohibited The bearings are lubricated by liquid pumped. Running the pump without liquid to be pumped should be avoided.

  • Page 30: Shutting Down

    Specific heat capacity Pump performance itself is not affected by specific heat capacity. But in case of operation with low specific heat capacity liquid in closed circuit system, the temperature of liquid is easy to rise. Use the appropriate measures to prevent the pump from excessively heating Noise Level Typical sound pressure levels measured in dB(A)(at distance 1m from the motor and a height 1.6m from the floor) are shown in the table below.

  • Page 31: Maintenance And Inspection

    Maintenance and Inspection 1. Routine Inspection Item Advice Does the pump run smoothly Permissible amplitude of vibration for without vibration? the pump with 2P motor is 28/33µm as maximum and 47/54µm, maximum for the pump equipped with 4P motor(60/50Hz). If abnormal noise is produced by the bearings or other parts, stop the pump immediately and check each part.

  • Page 32: Configuration And Location Of Part

    2. Configuration and Location of Part A list of parts (below) and a configuration diagram (following page) are given to provide a general description of the pump. You may refer to these as you read the instruction manual. Parts (all size) Parts Materials Remark...

  • Page 33: Configuration

    Coupling key 316SS Impeller key 316SS Shaft 316SS Rear casing 316SS Casing cover 316SS Casing 316SS Impeller 316SS Configuration...

  • Page 34: Order Of Disassembly And Assembly

    3. Procedure of Disassembly and Assembly Note Disassembling and assembling can be easily carried out when you put the pump separately on work stand. 62 Hexagon head bolt 3 Casing cover When disassembling, if hard to pull out the casing cover, please screw the bolt into the screw holes of the casing cover and lift it.
  • Page 35 64 Hexagon socket head cap screw When assembling, after tighten hexagon head bolt(No.62), please tighten these bolts again. 2 Casing 45 Bushing This part can be replaced by manu- facturer only. 33B O ring Rotating parts 4 Rear casing 45 Bushing This part can be replaced by manu- facturer only.
  • Page 36 8C Retaining ring When assembling, be sure to retain ring fits in into groove of shaft. When assembling and disassem- bling retaining ring, please use ap- propriate tool like the snap ring plier. 8A Impeller key Be sure the surface with the mate- rial mark faces upward (side which can be seen) when assembling.

  • Page 37: Checking Parts Dimension

    Note The flange of Suction side (No.55) and the check valve (No.56) must be fitted to the casing as below. Otherwise pump cannot self-prim because the check valve cannot work well. CHECK VALVE CASING FLANGE(55) Good Not Good The part number 54 &...
  • Page 38 WARMING Magnet drives cause strong magnetic fields. Persons with a pacemaker should not stay close to the magnet drive or come into close bodily contact with parts of it. ATTENTION The magnet coupling uses powerful magnets which attract metal and other magnetic materials.
  • Page 39 Disassembly Assembly Part No. Part Important Suggestions Order Order Rear Casing Tolerance Ring These parts can be replaced by Bushing manufacturer. Material mark on the key should face Impeller key upward. Retaining ring When assembling, please align the Sleeve notch of the sleeve with the key. The pump “MEK 402”...
  • Page 40 2-2 Please insert motor shaft accurately parallel to magnet coupling (M). Nothing so may result in scratch or crank on the motor shaft. 2-3 Please make sure that the motor shaft end is straight (flush) with the inside bottom of magnet coupling (M). ATTENTION If pumping hazardous chemicals, be sure to wash the pump thoroughly after draining the liquid.
  • Page 41 Specific heat capacity Use the suitable tools for assembly/disassembly in explosion hazard area. (EN1127-1 ANNEX A) And use the tools which are not attracted to magnet. The bypass-hole of casing and center-hole of shaft must be cleaned and not be interrupted. Otherwise the flow into the rear casing will be low.

  • Page 42: Optimal Tightening Torque For Bolts And Nuts

    5. Optimal Tightening Torque for Bolts and Nuts Parts No. Part Casing bolts Hexagon Flange bolts Flange bolts (hexagon Set screw socket head (hexagon head (hexagon head socket head bolt bolt) bolt) Pump Size bolt) 12.0N•m (1.22kgf•m) 4.8N•m M12/ (0.49kgf•m) 2.4 N•m 107.8N•m 42.1N•m...

  • Page 43: Troubleshooting

    Troubleshooting The following table contains the causes and countermeasures for typical problems that may occur. You may refer to the table when there seems to be something wrong with your pump. (Items particular to magnet pumps are indicated by a circle ( ). Problem Possible Causes Countermeasures...
  • Page 44 Problem Possible Causes Countermeasures Head of liquid is too low or too Throttle discharge valve. much discharge flow rate. Specific gravity or viscosity of liquid Reconsider planning. is too high. Overloading Irregular contact at rotating part Repair or replace part. See item concerning SiC Damaged SiC bearings bearings.

  • Page 45: Repairs And Warranty

    Sanwa Hydrotech Corp., or contractor appointed by Sanwa Hydrotech Corp., 3. Sanwa Hydrotech Corporation shall not assume responsibility for expenses or damage incurred as a result of failure of this product while being used.
  • Page 46 If you have any questions concerning the pump, please contact the local representative where you purchased it. Manufacturer: SANWA HYDROTECH CORPORATION No. 11-13 Minamikaneden 2-chome, Suita, Osaka, 564-0044, JAPAN Phone: +81-6-6330-5984 Fax: +81-6-6330-5975 E-mail: sxobd@sanwapump.co.jp Web: www.sanwapump.com Local Representative: No. MEK01C(E)/1612ATEX...

This manual is also suitable for:

Mek322Mek201Mek251Mek402

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