IWAKI PUMPS MDE Series User manual

Read this manual before use of product
T295-7 '10/01
IWAKI Magnetic Drive Pump
MDE Series (18.5~45kW-2P, 11~30kW-4P)
Instruction Manual
( )Country codes
IWAKI CO.,LTD. 6-6 Kanda-Sudacho 2-chome Chiyoda-ku Tokyo 101-8558 Japan
TEL:[phone] FAX:[phone](http://www.iwakipumps.jp)
Australia IWAKI Pumps Australia Pty. Ltd. TEL : [phone] FAX : [phone] Italy IWAKI Italia S.R.L. TEL : [phone] FAX : [phone]
Austria IWAKI (Austria) GmbH TEL : [phone] FAX : [phone] Korea IWAKI Korea Co.,Ltd. TEL : [phone] FAX : [phone]
Belgium IWAKI Belgium n.v. TEL : [phone] FAX : 1367 2030 Malaysia IWAKIm Sdn. Bhd. TEL : [phone] FAX : [phone]
China IWAKI Pumps (Shanghai) Co., Ltd. TEL : [phone] FAX : [phone] Norway IWAKI Norge AS TEL : [phone] FAX : [phone]
China IWAKI Pumps (Guandong) Co., Ltd. TEL : [phone] FAX : [phone] Singapore IWAKI Singapore Pte. Ltd. TEL : [phone] FAX : [phone]
China GFTZ IWAKI Engineering & Trading (Guangzhou) TEL : [phone] FAX : [phone] Spain IWAKI Iberica Pumps, S.A. TEL : [phone] FAX : [phone]
China GFTZ IWAKI Engineering & Trading (Beijing) TEL : [phone] FAX : [phone] Sweden IWAKI Sverige AB TEL : [phone] FAX : [phone]
Denmark IWAKI Nordic A/S TEL : [phone] FAX : [phone] Switzerland IWAKI (Schweiz) AG TEL : [phone] FAX : [phone]
Finland IWAKI Suomi Oy TEL : [phone] FAX : [phone] Taiwan IWAKI Pumps Taiwan Co., Ltd. TEL : [phone] FAX : [phone]
France IWAKI France S.A. TEL : [phone] FAX : [phone] Taiwan IWAKI Pumps Taiwan (Hsin-chu) Co., Ltd. TEL : [phone] FAX : [phone]
Germany IWAKI EUROPE GmbH TEL : [phone] FAX : [phone] Thailand IWAKI (Thailand) Co.,Ltd. TEL : [phone] FAX : [phone]
Holland IWAKI EUROPE NL Branch TEL : [phone] FAX : [phone] U.K. IWAKI Pumps (UK) LTD. TEL : [phone] FAX : [phone]
Hong Kong IWAKI Pumps Co., Ltd. TEL : [phone] FAX : [phone] U.S.A. IWAKI AMERICA Inc. TEL : [phone] FAX : [phone]
Indonesia IWAKI Singapore (Indonesia Branch) TEL : [phone] FAX : [phone] Vietnam IWAKI pumps Vietnam Co.,Ltd. TEL : [phone] FAX : [phone]

Contents
IMPORTANT INSTRUCTIONS ................................................. 1~5
Safety Instructions to Prevent Personal Injuries
OUTLINE OF PRODUCT ...................................................... 6~14
1. Before Using Pump .................................. 7
2. Operating Principle ................................... 7
3. Identification Codes .................................. 8
4. Specifications
and Outer Dimensions .............. 9~10
5. Names of Parts ................................ 11~14
PUMP OPERATION ............................................................. 15~28
1. Handling Instructions ........................ 16~19
2. Installation ........................................ 20~24
3. Wiring ..................................................... 25
4. Protection ............................................... 25
5. Operation Step ................................. 26~29
MAINTENANCE ................................................................... 30~53
1. Causes of Trouble
and Troubleshooting ............ 31~33
2. Maintenance and Inspection ............ 34~36
3. Consumable Parts .................................. 37
4. Disassembly and Assembly ............ 38~53
Please contact the Iwaki sales office or Iwaki dealer for any inquiries
or questions regarding this product.
Thank you for selecting the Iwaki Magnetic Drive Pump type MDE. 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" messages included in this manual.
This instruction manual should be kept by each end user and within reach of the actual oper-
ator, for quick reference when needed.

- 1 -
IMPORTANT INSTRUCTIONS
Important notes and statements for safe operation, preventing physical injury, and property damage,
are included on the body of the product and in the attached instruction manual.
Always Observe These Safety Instructions!
Safety Instruction to Prevent Personal Injuries
Ignoring this message can lead to improper
handling resulting in death or serious injury to the
operator.
Ignoring this message can lead to improper
handling resulting in injury to the operator or dam-
age to the product.
Warning
Caution
For exportation
Technology related to the use of goods in this instruction manual falls in the category of
technology contained in the Foreign Exchange Order Attachment, which includes com-
plementary export control of technology. Please be reminded that export license, which
is issued by the Ministry of Economy, Trade, and Industry could be required, when this is
exported or provided to someone even in Japan.

WARNING
● Damaged or deteriorated tools are very dangerous. Use qualified and suitable
tools only.
● Use of protectors: When disassembling, assembling, and conducting maintenance
or when handling a dangerous type of liquid or a liquid of unknown property, be sure
to wear safety gloves, a helmet, and protective shoes. In addition, when handling wet-
end parts, always wear protective goggles, masks, etc.
● To prevent death or injury from a falling pump, make sure the rope or chain used
for lifting the pump is not accidentally cut or disconnected during installation. Make
sure the rope or the chain used to lift the pump has sufficient strength in relation to the
pump load. Also, be sure not to stand underneath a lifted or suspended pump.
● When fixing the pump with rope or chain, be sure to use special bolts (or rings) for
lifting. Never use any other points for lifting the pump.
● Always turn off the power supply prior to servicing the pump. Make special pro-
visions so that no other operator mistakenly turns on the power supply while someone
is working on the pump. In a noisy or poor visibility environment, display a sign near
the power supply switch to notify others that someone is "WORKING" on the pump.
Power supply mistakenly turned on during maintenance may lead to personal injury.
Each operator must be especially careful of power supply operation.
● To ensure greater safety, check and make sure that there is no one near the
pump when switching on the power supply. The pump is not equipped with an
ON/OFF switch. Connecting the power cable or power plug supplies the power to the
pump and starts the operation.
● Run the pump at the specified power supply voltage on the nameplate only.
Otherwise, fire or electric shock may result.
● If the pump operation is stopped due to a power failure or closure of discharge wire,
turn off the power switch at once. After normal conditions return, turn the switch on again.
● Do not use the pump for anything that it is not designed to do. User's failure to
observe this instruction exempts Iwaki from any responsibility for personal injury or
damage to the equipment or facility caused by the pump's misuse.
● When handling a toxic or odorant liquid, ventilate the working area well. In addi-
tion, the operator must wear protector gear (such as a safety mask, safety goggles,
and protective gloves).
- 2 -
Safety Section
Power off
Wear protective
gear
Prohibited
Caution
Prohibited
Caution
Prohibited
Caution
Wear protective
gear
Caution

- 3 -
WARNING
● Do not allow toxic substances such as lubricants, solvents, or similar sub-
stances to flow into the local sewage system or river systems. Do not drain
hazardous liquids such as chemical solutions discharged out of the pump directly onto
the ground. Instead, drain such liquids into some kind of container. Observe the laws
and regulations related to the application, handling, and processing of hazardous sub-
stances.
● Do not pass under a raised pump.
Never pass under a raised pump. A serious injury could occur if the pump is acciden-
tally dropped.
● No remodeling!
Remodeling of the pump by the user may result in serious personal injury, electric
shock, or damage to the pump. Do not attempt remodeling as it is very dangerous.
● Be careful with rotating elements.
Rotating elements such as the shaft, coupling, etc., can cause a serious personal inju-
ry by seizing fingers, hands, hair, etc. Be careful not to touch such rotating elements
while the pump is in operation.
● When the pumps are used to transfer the dangerous liquids mentioned as below, the
pumps always must be checked and watched so that the liquids can not be leaked.
The operation of the pumps leaking the liquids may result in personal injury and/or
explosion, fire accidents.
• Explosive, fire-spreading and inflammable liquids
• Corrosive and stimulus toxic liquids
• Liquids detrimental to health
CAUTION
● Qualified operators only!
The pump operator and pump operation supervisor must not allow any operators who
have little or no knowledge of the pump to run operate the pump. Pump operators
must have a sound knowledge of the pump and its operation.
● For specified application only
The pump is designed and manufactured to the specifications agreed upon by the
user and Iwaki. The use of a pump in any application other than those clearly speci-
fied may result in injury or damage to the pump. Use the pump strictly in accordance
with the pump specifications and application range. If you change any specification,
contact Iwaki or your dealer.
Safety Section
No Remodeling
Prohibited
Prohibited
Caution

- 4 -
CAUTION
● Ventilate!
Poisoning may result during an operation which involves toxic or odorous liquid.
Ventilate the operating site sufficiently.
● Spill-out prevention measures
Appropriate protective measures should be taken against any spill-out accidents
involving the operating liquid as a result of unexpected damage to the pump or the
piping. Never discharge hazardous liquid, including, but not limited to, chemical liquid,
over the ground or floor on the pump operating site. Follow local rules and regulations
in disposing of hazardous substances.
● Do not operate the pump dry.
Do not run the pump dry (without liquid inside the pump). Heat generated as a result
of abrasion between elements inside the pump during operation without liquid may
damage the inside of the pump. Operating the pump with the suction valve fully
closed will result in dry operation.
● Keep away from heat or flame.
Do not place any open flame or flammable object near the pump.
● Do not stand on the pump.
Do not stand on the pump or use the pump as a step under any circumstances.
Otherwise, you may experience a serious injury.
● Do not touch the pump.
When the pump is used to feed a hot liquid, do not touch the pump or the piping with
your bare hands during and immediately after operation as their surfaces are danger-
ously hot.
● Arrange grounding!
Do not operate the pump without connecting the grounding wire. Otherwise, an elec-
trical shock may result. Make sure the grounding wire is connected with the grounding
terminal.
● Install an earth leakage breaker
The operation of a pump without using an earth leakage breaker may cause an electri-
cal shock. Please install an optional leakage breaker in the system.
● Countermeasures for static electricity
When low electric conductivity liquid such as ultra-pure water and hydro carbon or
inactive fluor liquid (e.g. FluorinertTM) is handled, the static electricity may be gener-
ated in pump and liquid. (This electric charge does not happen if liquid is mixed with
water.) The high electric charge may cause the spark and break down of pump in the
worst case.
Safety Section
Prohibited
Prohibited
Caution
Earthing
Electrical Shock
Caution
Caution
Prohibited

- 5 -
CAUTION
● Do not install or store the pump in the following places.
• Places where flammable gas, dust or material is used or placed.
• Places where corrosive gas (chlorine gas or the like) is generated.
• Places where the ambient temperature is extremely high (40 °C or higher) or
extremely low, 0 °C or lower.
• Places where the pump is exposed to extreme dust or humidity. (Excluding the outdoor type)
• Places where vibrations occur.
● Pump start-up
When connecting a power supply to the pump, make sure there is no person around
the pump. The pump has no ON/OFF switch. The pump starts operation when the
power is supplied by connecting the power supply cable.
● Foreign matter
Should foreign matter enter the pump, turn off the power at once and remove the
obstruction. Using the pump with foreign matter inside may cause damage to the
pump or a malfunction.
● Disposal of used pump
Disposal of used or damaged pumps must be done in accordance with local laws and
regulations. (Consult a licensed industrial waste products disposing company.)
● The flange type motor is so heavy that it may fall over against the motor follow-
ing disassembly of the pump. Make sure to support the motor by using a crane
or other heavy-duty support system.
● When removing the split plate and rear casing assembly from the main unit,
use a crane or other heavy-duty support system to assist in this purpose as
these parts are very heavy.
● Handling of magnet coupling
The magnet used in the pump has a very high magnetic power. Be careful not to allow
your fingers to be seized by the magnet or to allow the magnet near any electronic
device which may be affected by the magnet's power.
As a flange type driving magnet requires special equipment to hold it in place, do not
remove it from the shaft. In case removal is necessary, contact Iwaki or your dealer.
● Suspending pump operation for a prolonged period
When suspending pump operation for a prolonged period, drain the pump and clean
inside the pump. Take appropriate measures to prevent the entrance of foreign matter
into the pump. If the pump is not operated for a period longer than one year, replace
the gasket and inspect inside the pump.
Safety Section
Prohibited
Caution
Caution

- 6 -
OUTLINE OF PRODUCT
1. Before Using Pump ........................... 7
2. Operating Principle ........................... 7
3. Identification Codes .......................... 8
4. Specifications and
Outer Dimensions ....................... 9~10
5. Names of Parts .......................... 11~14

- 7 -
The MDE pump is a magnet-driven centrifugal type pump
developed for various applications.
The impeller inside the pump chamber (front casing) is
rotated by magnetic force to transfer liquid from the suc-
tion side to the discharge side.
The MDE type pump features excellent corrosion resist-
ance, durability, and safety, and serves as a chemical pump
for various processes. Most chemicals can be handled by
the pump.
2. Operating Principle
1. Before Using Pump
Iwaki Magnet Pump
MODEL
HEAD (m)
CAPACITY (ℓ/ min)
kW Hz rpm
MFG.No.
IWAKI CO.,LTD.
TOKYO JAPAN
After unpacking, check the following points to confirm that
the delivered product and its accompanying parts and ele-
ments are exactly what you ordered.
When lifting the pump please follow the procedure men-
tioned "2. Installation" of "Pump operation".
[1] Does the model indicated on the nameplate conform to
your order?
[2] Has the pump unit or any part of it been damaged or
bolts and nuts been loosened during delivery?
[3] MFG. No. shows the year the product was manufac-
tured.
(e.g.1) When first numeral is "7".
7 × × 5 × × ×
The forth numeral of MFG.No. shows the prod-
uct was manufactured.
"5" shows the product was manufactured in the
year 1995.
(e.g.2) When first numeral is not "7".
× × 5 × × ×
The third numeral of MFG.No. shows the year
the product was manufactured.
[4] Before connecting the power supply to the pump,
detach the fan cover of the motor and manually check
to ensure that the fan rotates smoothly by using your
finger.
If you find anything wrong, please refer to the dealer you
placed your order with.
Discharge side
Suction side
Front casing
Impeller

- 8 -
3. Identification Codes
Example:
MDE 65 - 200 E K V F 185 J - D 2
Nominal bore size (Suction × Discharge)
65: 80A × 65A, 80: 100A × 80A, 125: 150A × 125A
Nominal Impeller size 120 ~ 250
Materials of liquid-contact parts E: ETFE
Materials of bearing and spindle K: SiC
Material of O-ring Z: KALREZ®
V:FK M
E:EPDM
Type of motor C: Foot mount type motor
F: Flange mount type motor
Motor output 110: 11kW, 150: 15kW, 185: 18.5kW
220: 22kW, 300: 30kW, 370: 37kW
Pump standard J: JIS dimensions
Special version A: Without drain, Standard
D: With drain, Standard
S: Without drain, Special version
X: With drain, Special version
The number of motor poles 2: 2P, 4: 4P