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

- 9 -
4. Specifications and Outer Dimensions
■Outer dimensions in mm
Flange mounted Motor type
Model Motor Output
(kW) W H a b c (d) (e) f g A B Mass W/O
Motor
(kg)
MDE65
MDE80
MDE125
18.5 kW-2P
22 kW-2P
30 kW-2P
37 kW-2P
18.5 kW-2P
22 kW-2P
30 kW-2P
37 kW-2P
11 kW-4P
15 kW-4P
18.5 kW-4P
22 kW-4P
610
555
550
275
740 1200 230255
645 280
355
100
140
65A 80A
180
185
185
190
180
185
185
190
240
245
250
250
80A 100A
125A150A
4- ø27

- 10 -
■Outer dimensions in mm
Foot mounted Motor type
Model Motor Output
(kW) W H a b c (d) (e) f g A B
Total Mass
including motor
(kg)
MDE65
MDE80
18.5 kW-2P
22 kW-2P
30 kW-2P
37 kW-2P
18.5 kW-2P
22 kW-2P
30 kW-2P
37 kW-2P
490
736
736
610
440
460
475
435
455
475
440
670 245
670
550
230 740 1135 198
840 1250 205
940 1400 230 275
230
245
240
260
275
235
255
100
65A 80A
220
220
220
205
200
205
205
215
80A 100A
4- ø23 ( ø27/37kW or more)

- 11 -
■ Flange mounted Motor type (MDE65•80)
No. Parts Name Q'ty Material
Remark
No. Parts Name Q'ty Material
Remark
100.1
122
158
159
230
314
330
337
370
370.1
400.1
400.2
400.4
412.1
412.2
500
540
550.1
550.3
554.1
554.2
FRONT CASING
DRAIN PLATE
REAR CASING
REAR CASING COVER
IMPELLER
THRUST, IMPELLER
BRACKET
SPLIT PLATE
SLEEVE
THRUST RING
GASKET, FRONT
GASKET, REAR
GASKET, DRAIN
O-RING
O-RING
BACK UP RING
BUSHING
PLAIN WASHER
PLAIN WASHER
SPRING WASHER
SPRING WASHER
1
1
1
1
1
1
1
1
2
4
8
2
1
1
1
1
1
1
1
1
1
ETFE+FCD400
STEEL
PFA
FRP
CFRETFE+STNLS STEEL
SiC
FCD400
PFA+FCD400
SiC
SiC
PTFE
PTFE
PTFE
See Note 1
See Note 1
STNLS STEEL
SiC
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
M8
M12
M16
M16
M16
M16
M12
M8
M8 × 20
M16 × 35
M12 × 35
M16 × 70
M16
M8 × 20
M8 × 10
554.3
554.4
554.7
801
858
859
890
900
901.1
901.2
901.3
901.6
901.8
902
903.5
908.2
920
922
922.1
940
SPRING WASHER
SPRING WASHER
SPRING WASHER
MOTOR
DRIVE MAGNET UNIT
MAGNET CAPSULE UNIT
BASE
EYE BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
STUD BOLT
HEX. SOCKET
HEAD BOLT
HEX. SOCKET
SET SCREW
NUT
IMPELLER NUT
IMPELLER LOCK NUT
KEY
STNLS STEEL
STNLS STEEL
STNLS STEEL
RARE-EARTH+STEEL
RARE-EARTH+PFA
STEEL
STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STEEL
STNLS STEEL
CFRETFE+STNLS STEEL
STNLS STEEL
STEEL
4 or 8
2
4
1
1
1
1
5
2
4 or 8
2
4
6
2
4
2
2
1
1
1
Note1: Varies depending on pump type
5. Names of Parts
A
920902
554.1901.8
901.3 890 370.1 370 500 903.5 400.2 400.1
122
901.1 554.2
550.1
554.4 901.6554.7 550.3
554.3
801 901.2 908.2 330 858 159 900 859 158 337 314 100.1
230
412.2
940
412.1
922
540
400.4
922.1

- 12 -
■ Foot mounted Motor type (MDE65•80)
No. Parts Name Q'ty Material Remark No. Parts Name Q'ty Material Remark
100.1
122
158
159
183
212
230
314
321.1
321.2
330
337
350
370
370.1
400.1
400.2
400.4
412.1
412.2
500
FRONT CASING
DRAIN PLATE
REAR CASING
REAR CASING COVER
SUPPORT
DRIVE SHAFT
IMPELLER
THRUST, IMPELLER
BALL BEARING
BALL BEARING
BRACKET
SPLIT PLATE
BEARING HOUSING
SLEEVE
THRUST RING
GASKET, FRONT
GASKET, REAR
GASKET, DRAIN
O-RING
O-RING
BACK UP RING
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
ETFE+FCD400
STEEL
PFA
FRP
STEEL
STEEL
CFRETFE+STNLS STEEL
SiC
FCD400
PFA+FCD400
FC200
SiC
SiC
PTFE
PTFE
PTFE
See Note 1
See Note 1
STNLS STEEL
M8 × 15
M8
M12
540 BUSHING 1 SiC
550.1 PLAIN WASHER 2 STNLS STEEL M8
550.2 PLAIN WASHER 2 STNLS STEEL M12
550.3 PLAIN WASHER 4 STNLS STEEL M12
551 WAVE WASHER 1 SPRING STEEL
554.1 SPRING WASHER 8 STNLS STEEL M16
554.2 SPRING WASHER 2 STNLS STEEL M8
554.3 SPRING WASHER 4 STNLS STEEL M12
554.4 SPRING WASHER 2 STNLS STEEL M12
554.5 SPRING WASHER 2 STNLS STEEL M10
554.6 SPRING WASHER 4STNLS STEEL
M8 × 20
M8 × 20
M12 × 35
M10 × 25
M16 × 70
M12 × 35
M16
554.7
554.8
681
801
840
858
859
890
900
901.1
901.2
901.3
901.4
901.5
901.6
901.7
901.8
902
903.5
908.1
SPRING WASHER
SPRING WASHER
COUPLING COVER
MOTOR
COUPLING
DRIVE MAGNET UNIT
MAGNET CAPSULE UNIT
BASE
EYE BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
STUD BOLT
HEX. SOCKET HEAD
BOLT
HEX. SOCKET SET SCREW
STNLS STEEL
STNLS STEEL
STEEL
RARE-EARTH+STEEL
RARE-EARTH+PFA
STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STEEL
4
4
1
1
1
1
1
1
5
2
4
2
2
4
4
4
6
2
4
2
908.2
HEX. SOCKET SET SCREW
STEEL
2
920 NUT STNLS STEEL
2
922 IMPELLER NUT
CFRETFE+STNLS STEEL
1
922.1 IMPELLER LOCK NUT STNLS STEEL
1
932.1 STEEL WIRE ROD
1
932.2
RETAINING RING
STEEL WIRE ROD
1
940
RETAINING RING
STEEL
1
940.1 KEY
KEY
STEEL
1
940.2 KEY STEEL
1
Note1: Varies depending on pump type
554.3
901.8 554.1
902 920
554.7550.3901.6
554.4
550.2554.5
554.6
554.8
801
681
908.2
840
908.1
901.7 890901.5 901.4 183 901.3 212 321.1 932.2 932.1
122
940.2
551
321.2
350
940.1
901.2
330
858
159
900
859
158
337
314 100.1
230
412.2
940
412.1
922
540
400.4
901.1
370.1 370 500 903.5 400.1
550.1 554.2
400.2
922.1
A
A

- 13 -
■ Flange mounted Motor type (MDE125)
A
A
922
901.2
554.7550.3901.6
554.13554.4
370
554.3
901.3890 500 903.5 901.13 400.2 400.1 122
901.1
400.4
540
412.1
922.1
940
412.2
230
801 908.2 330 858 159 158 859 337 314 100.1
370.1
550.1 554.2
900
901.8 554.1
902 920
No. Parts Name Q'ty Material Remark No. Parts Name Q'ty Material Remark
100.1
122
158
159
230
330
337
370
370.1
400.1
400.2
400.4
412.1
412.2
500
540
550.1
550.3
554.1
554.2
FRONT CASING
DRAIN PLATE
REAR CASING
REAR CASING COVER
IMPELLER
BRACKET
SPLIT PLATE
SLEEVE
THRUST RING
GASKET, FRONT
GASKET, REAR
GASKET, DRAIN
O-RING
O-RING
BACK UP RING
BUSHING
PLAIN WASHER
PLAIN WASHER
SPRING WASHER
SPRING WASHER
1
1
1
1
1
1
1
2
4
8
2
1
1
1
1
1
1
1
1
1
ETFE+FCD400
STEEL
PFA
FRP
CFRETFE+STNLS STEEL
314 THRUST, IMPELLER 1 SiC
FCD400
PFA+FCD400
SiC
SiC
PTFE
PTFE
PTFE
See Note 1
See Note 1
STNLS STEEL
SiC
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
M8
M12
M16
M16
M16
M16
M12
M8
M8 × 20
M16 × 35
M12 × 35
M16 × 55
M16
M8 × 20
M8 × 10
554.3
554.4
554.7
801
858
859
890
900
901.1
901.2
901.3
901.6
901.8
902
903.5
908.2
920
922
922.1
940
SPRING WASHER
SPRING WASHER
SPRING WASHER
MOTOR
DRIVE MAGNET UNIT
MAGNET CAPSULE UNIT
BASE
EYE BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
HEX. HEAD BOLT
STUD BOLT
HEX. SOCKET
HEAD BOLT
HEX. SOCKET
SET SCREW
NUT
IMPELLER NUT
IMPELLER LOCK NUT
KEY
STNLS STEEL
STNLS STEEL
STNLS STEEL
RARE-EARTH+STEEL
RARE-EARTH+PFA
STEEL
STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STNLS STEEL
STEEL
STNLS STEEL
CFRETFE+STNLS STEEL
STNLS STEEL
STEEL
4 or 8
2
4
M16
554.13 SPRING WASHER STNLS STEEL8
1
1
1
1
5
2
4 or 8
2
4
6
M16 × 30
901.13 HEX. HEAD BOLT STNLS STEEL8
2
4
2
2
1
1
1
Note1: Varies depending on pump type

- 14 -
■Description on Main Unit Body and Label
CAUTION
When cleaning the pump, be careful not to wipe the labels or the pump
body with solvent.
Pump unit (liquid feeding section)
Non-self priming type: Before operating the
pump, feed priming liq-
uid through the suction
or discharge port.
Motor nameplate
Use only the power voltage specified on
the nameplate. (Follow applicable local
power regulations when used outside of
Japan.)
"Arrow" indicator label
The arrow indicates the rotating
direction of the motor.
Always make sure that the motor
runs in the direction the arrow
indicates. (Refer to "Preparation
for start-up [6]" in the "Pump
operation" chapter.)
Motor (Driving section)
This motor provides power to the
pump unit.
Base
Setting should be fixed.
Discharge port
Suction port
Drain port
Liquid discharge port
If pump has drain port , drain the
discharged liquid into a suitable
container and follow the applica-
ble local regulations in disposing
of the liquid. Never allow the
discharged liquid to run directly
onto the ground.
"Never Operate Dry" indicator label
Operating the pump without liquid will
cause damage inside the pump. Never
operate the pump without liquid.
Specifications nameplate
Pump must be operated only under
the specified conditions.
"Assemble Carefully" indicator label
Parts may be pulled together by magnetic force. Take steps
to ensure that your finger is not caught between the parts.
(Refer to the "Maintenance" Section.)

- 15 -
PUMP OPERATION
1. Handling Instructions ................. 16~19
2. Installation.................................. 20~24
3. Wiring .............................................. 25
4. Protection......................................... 25
5. Operation Step........................... 26~29

- 16 -
(Observe all the following instructions
to prevent injuries and accidents.)
Warning
● 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
● Read the following information prior to installing the pump.
● Protective wear:
When operating the pump or working near it, with the pump system loaded with chemical liquid,
always wear protective clothing, face guard, goggles, and gloves. Further precautionary meas-
ures must be taken depending upon the type of liquid used.
● Operating the pump dry (without supplying liquid to it) may cause seizure on wear of the
inside of the pump section.
● Pump repair beyond the range specified in this instruction manual:
Do not try to disassemble or repair the pumps by yourself.
*The pump must be repaired by trained and qualified operators only. When it needs to be disassembled
and repaired, stop operation and contact the supplier for advice.
1. Handling Instructions
[1] Handle the pump carefully.
Strong impacts caused by dropping the pump on the floor or striking it may result in damage or faulty perform-
ance.
[2] Priming water
Be sure to fill the pump unit with feeding liquid as priming water before pump operation.
[3] Do not operate the pump in the following places.
 •Placeswherethetemperaturefallsbelow0
 •Placeswherecorrosivegasorexplosivegas(suchaschlorinegas)isgenerated
 •Placesexposedtosplashingwater
 •Placeswheretheambienttemperatureis40orabove
 •Placeswherethehumidityisexcessivelyhigh.(Permissiblehumidity:35~85%RH)
 •Placesfilledwithorlikelytobefilledwithexplosiveorcorrosiveatmosphere.
 •Dangerduetodust,fire,earthquakeand/oranyexternallyimposedshock.
* If the pump is kept out of operation for a period longer than a month, open the fan cover of the motor and
manually rotate the fan using your finger once a month. If the pump is not operated for a period longer than
one year, replace the gasket before starting the pump.
CAUTION
To prevent power from being supplied accidentally when or after the fan cover is detached from
the motor, take effective measures to block the energization before carrying out the procedure
below.

- 17 -
[4] Keep the pump away from fire
To prevent fire and explosions, do not place dangerous or inflammable substances near the pump.
[5] If pump is damaged
Do not operate a damaged pump, otherwise there may be electricity leakage or electric shocks.
[6] No remodeling
Never try to remodel the pump. This may cause a serious accident or damage.
[7] No disassembly or repair
Users are allowed to disassemble and repair the pump to the degree of the given description in "Disassembly
and Assembly" in this manual.
[8] No dry running operation
Dry operation of the pump (pump operation without liquid inside) may cause damage to the pump internally.
Never operate the pump dry. In the case of MDE type, the sliding parts are self-lubricated and self-cooled. If
the pump is operated dry or with the suction-side valve closed, damage may result.
*Countermeasures to be taken in case of dry operation
1. Turn off the power switch of the pump immediately and leave the pump as it is for more than 1 hour.
2.Prime the pump and fill the pump with liquid.
(Note that the pump should be supplied with liquid after leaving the pump empty for more than 1 hour.
Sudden supply of liquid may cause a crack in the part due to quenching effects.)
[9] Points to be noted when starting and stopping pump
Pay close attention to the following points to avoid water hammer action when starting and stopping pump
operation. When the discharge-side piping is very long, extra attention is required.
(1) When starting the pump, first prime it. Then, close the discharge valve completely and turn on the power
switch. After starting up the pump, open the discharge valve gradually and set it to the desired operation
level.
(2) When stopping the pump, first close the discharge valve slowly. Turn off the power switch only after com-
pletely closing the discharge valve.
Caution
In this procedure, never try to stop the pump quickly using a solenoid valve, etc. Quick
closure may cause water hammer action, and the excessive pressure will destroy the
pump.
[10] Use of slurry liquid
As a general rule, the pump cannot be used for the feeding of slurry. If the user plans to use slurry, be abso-
lutely certain to contact Iwaki first for consultation.

- 18 -
[11] Influence of specific gravity and viscosity of liquid on pump performance
If the specific gravity or viscosity of the liquid is higher than that of pure water, the shaft power, discharge
volume, and pump head may vary somewhat. The delivered pump has been prepared to meet the specifications
ordered by the user. To change the operating conditions after delivery, be sure to contact the supplier.
[12] Tolerable pressure limit
•Maximumpressureresistance
The table on the left shows the maximum pres-
sure resistance of each model. Take care that the
discharge pressure does not exceed the maximum
pressure resistance.
[13] Intermittent operation
 Frequentstart/stopswitchingconsiderablyshortenstheservicelifeofthepump.Trytolimittheswitchingfre-
quency to six times or less per hour.
[14] Temperature humidity fluctuation
Temperature fluctuation may not change the performance of the pump itself. However, the liquid may change
in term of its viscosity, pressure, or corrosion resistance. Pay special attention to changes in liquid characteris-
tics as a result of temperature fluctuation.
* Refer to the corrosion resistance table for the temperature ranges recommended for various types of liquid.
For inquiries or consultation, contact the dealer you placed your order with.
[15] Disengagement of magnet coupling
Though the motor is running, the liquid is not circulated. (The pressure gauge on the discharge side points to
"0" point approximately.)
When the magnet coupling disconnects, stop the pump within 1 minute. If operation is continued with the cou-
pling in the disconnected mode, the power of the coupling will decrease considerably.
Maximum pressure resistance
0 50 100
0.5
1.0
1.5
MPa
Temperature
MDE65•80
MDE125
°C
Liquid temperature range:
Ambient temperature range:
Humidity range:
ETFE: 0~100°C
0~40°C
35~85%RH