IWAKI PUMPS MDF-L User manual

Read this instruction manual before use of product
IWAKI Magnetic Drive Pump
Model MDF-L
Instruction Manual
(European Edition)
T313-6 '05/04
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: IWAKI EUROPE GmbH
: IWAKI Italia S.R.L.
: IWAKI Nordic A/S
: IWAKI Sverige AB
: IWAKI Suomi Oy
: IWAKI Norge AS
: IWAKI France S.A.
: IWAKI PUMPS (UK) LTD.
: IWAKI (Schweiz) AG
: IWAKI (Austria) GmbH
: IWAKI Holland B.V.
: IWAKI Iberica Pumps, S.A.
: IWAKI Belgium n.v.
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FAX : 1367 2030
: IWAKI America Incorporated
: IWAKI Pumps Australia Pty. Ltd.
: IWAKI Singapore Pte. Ltd.
: IWAKI Singapore (Indonesia Branch)
: IWAKIm Sdn. Bhd.
: IWAKI Pumps Taiwan Co., Ltd.
: IWAKI (Thailand) Co.,Ltd.
: IWAKI Pumps Co., Ltd.
: IWAKI Pumps (Guandong) Co., Ltd.
: GFTZ IWAKI Engineering & Trading (Guangzhou)
: IWAKI Pumps Co., Ltd. (Beijing)
: IWAKI Pumps (Shanghai) Co., Ltd.
: IWAKI Chemical Pumps Philippines, Inc.
: IWAKI Korea Co.,Ltd.
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( )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)
This product is protected by patent.

Thank you for selecting the IWAKI Magnetic Drive Pump type MDF-L. 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
operator, for quick reference when needed.
Contents
IMPORTANT INSTRUCTIONS ................................................. 1~3
Safety instructions to prevent personal injuries
OUTLINE OF PRODUCT ............................................................ 4
1. Unpacking and inspection ........................ 5
2. Description on body and label .................. 5
3. Model code ............................................... 6
4. Names of parts ········································· 8
INSTALLATION ........................................................................... 10
1. Installation .............................................. 11
2. Piping ..................................................... 12
3. Electrical wiring ...................................... 14
OPERATION ................................................................................ 15
1. Precautions on operation ······················· 16
2. Operation (Starting) ................................ 17
3. Pump stopping ....................................... 17
MAINTENANCE .......................................................................... 18
1. Troubleshooting ······································ 19
2. Maintenance and inspection .................. 21
3. Disassembly and assembly .................... 25
4. Consumable parts .................................. 28
Please contact the IWAKI sales office or IWAKI dealer for any
inquiries or questions regarding this product.

- 1 -
For the Safe and Correct Handling of the Pump
• Before use of the pump, read carefully this "Safety Section" to prevent accidents and to
avoid the damage or loss of other assets.
• Observe and abide by the instructions described in this "Safety Section". These
instructions are very important for protecting pump users or other persons from
hazard or from loss of assets.
• Meaning of symbols
Following two symbols describe the extent of hazards and loss which may brought if the
instructions are not observed or if the pump is wrongly used.
Following two symbols describe the content to be observed.
SAFETY SECTION
Warning Nonobservance or misapplication of the contents of the "Warning" could lead to a death or heavy injury of
person.
Caution Nonobservance or misapplication of the contents of the "Caution" could lead to a injury of person or damage of
assets.
Prohibited action or procedure is indicated. Inside or
near this circle, a concrete activity to be prohibited is
depicted.
Action or procedure which must be performed without
fail is indicated. Inside this circle, a concrete activity
to be performed is depicted.

- 2 -
Warning
•Magnet field danger
The magnet drive pumps contain very strong magnets. The strong magnet field
could adversely affect persons who are assisted by electronic devices such as
pacemakers etc.
•Always turn off power supply prior to maintenance works etc. Pay special attention
so that no other operator turns on by mistake the power supply while someone is
working on the pump. In a noisy or poor visibility environment, display a sign near
power supply switch to notify other person that someone is "WORKING" on the
pump. Power supply mistakenly turned on during maintenance works may lead to
personal injury. Each operator must pay special attention.
•Wear protectors
When piping is removed or pump is disassembled/assembled, wear protective gear
such as safety goggles and protective gloves etc.
•Lifting pump
When pump is lifted, apply chain or belt to eye bolt and motor to keep the pump &
motor horizontally.
•No remodeling
Remodeling of pump may result in serious personal injury or damage of the pump.
Do not attempt remodeling pump because it is very dangerous.
Power off
Wear protective
gear
No Remodeling
•Dangerous liquid
When the pump is used to transfer dangerous liquids mentioned as below, the
pump must always be checked and watched so that the liquid can not be leaked.
The operation of pump leaking the liquid may result in personal injury, explosion or
fire accident.
•Explosive or flammable liquids
•Corrosive or stimulus toxic liquids
•Liquids harmful to human health
Safety Section

- 3 -
CAUTION
•Attention to magnetic force
This pump employs strong magnets. Special attention must be paid not to be injured
by attracting force of magnets. Follow the procedure "Disassembling and
Assembling" when the maintenance works are done.
•Do not run pump dry
Do not run pump dry (without liquid). If the pump run dry, heat is generated by
rubbing, which causes pump damage. If the pump is operated with suction side
valve closed, the pump runs dry.
•Countermeasures for static electricity
When low electric conductivity liquid such as ultra-pure water and fluor inactive
liquid (e.g. Fluorinert™ are handled, the static electricity may be generated in the
pump, which may cause static discharge and pump break down. Take
countermeasures to avoid and remove the static electricity.
•Qualified operator
The pump must be handled or operated by the person who has enough knowledge
and well acquainted with the pump.
•For specified application only
The use of pump in any application other than those clearly specified may result in
the failure or damage of the pump.
Do not run dry
•Disposal of used pump
Disposal of used or damaged pump must be done in accordance with local laws and
regulations. (Consult a licensed industrial waste products disposing company.)
•Ventilate the site
When handling the liquid which may generate toxic gas, safety measures such as
ventilation must be taken to prepare for the accidental liquid leakage.
•Countermeasure to liquid flowing out
Protective measurement must be taken against liquid flowing out caused by
damage of pump or pipe by accident. Also, appropriate measurement must be taken
so that the liquid can not directly flow out on the ground.
Safety Section
•Eliminate air in pump chamber
Before full operation of pump, run pump to eliminate air from pump chamber.
Above all when pumping liquid which easily generates bubbles (hydrogen peroxide,
sodium hypochlorite or so), eliminate air every time when pump is operated.
Operation of pump with air remaining in pump chamber may heat rubbing parts of
pump resulting in pump damage.

- 4 -
OUTLINE OF PRODUCT
1. Unpacking and inspection.................. 5
2. Description on body and label............ 5
3. Model code ........................................ 6
4. Names of parts................................... 8

- 5 -
1. Unpacking and inspection
Iwaki Magnet Pump
MODEL
HEAD
CAPACITY
MFG.No.
(m)
(r/min)
IWAKI CO.,LTD.
TOKYO
JAPAN
2P403846
1
kW Hz rpm
After unpacking, check the following points to confirm that
the delivered product and its accompanying parts and
elements are exactly what you ordered.
[1] Do the model and frequency indicated on the nameplate
conform to your order?
[2] Prior to the installation of the MDF-LMKK pump
(using SiC liner ring and mouth ring), remove the
cardboard pad inserted inside the suction port.
[3] Has the pump unit or any part of it been damaged or
bolts and nuts been loosened during delivery?
2. Description on body and label
Pump unit (liquid feeding section)
No self priming: Before operating the pump,
feed liquid through the suction
or dischargeside port.
Motor nameplate
Use only the power voltage specified on the
nameplate. (Follow applicable local power
regulations.)
"Rotation" 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 chapter
"Operation".)
Motor (Driver)
This motor provides power to the
pump unit.
Base
Pump should be fixed firmly.
Discharge port
Suction port
Drain port
Drain the discharged liquid into a
suitable container and follow the
applicable local regulations in
disposing of the liquid. Never
allow the discharged liquid to
flow directly onto the ground. "Never Run Pump Dry" label
Operating the pump without liquid will cause damage inside the
pump. Never operate the pump without liquid. (Refer to pump
model code u.)
CAUTION
When cleaning the pump, do not wipe the labels or the pump body with
solvent.
Pump specification nameplate
Pump must be operated according to
the specified conditions.

- 6 -
3. Model code
Example:
MDF-L 42 5 CF V T - D H1
qwertyui
qSeries MDF-L Type Series
wNominal bore size Suction ×Dischage (mm)
25 : 25 ×25
40 : 40 ×40
42 : 50 ×40
eMotor output 0: 0.37 kW 1: 0.75 kW 2: 1.5 kW 3: 2.2 kW
5: 4 kW
rMaterial of bearing/spindle CF: High density carbon/Alumina ceramics 99.5%
AA: Alumina ceramics 99.5%/Alumina ceramics 99.5%
KK: SiC/SiC
tMaterial of O ring and gasket V: FKM E: EPDM A: AFLAS®
FKM, AFLAS®: Fluoro rubber
EPDM: Ethylene propylene rubber
yCode of impeller T, V, W: Standard
K, L: For high head applications
uConstruction code D: Pump can run dry for max. one hour.
E: Pump can not run dry.
iHigh temp/
High pressure version
No code: Standard
H: For high liquid temperature
(Max. 100 deg. C for 250/401)
H1: For high allowable pressure
(Max. 0.5MPa for 42 model)

- 7 -
Operating condition of pump
[1] Allowable pressure
Graphs below show maximum pressure resistance of pump. Pump discharge pressure should not exceed the
max. allowable pressure.
[2] Slurries containing liquid
Liquid containing slurries can not be pumped as a general rule, however the pump with SiC bearing (KK type)
can handle liquid containing slurries max. 5% concentration, particle size max. 50 µ and hardness max. 80Hs.
Consult us in advance when you wish to handle liquid containing slurries.
[3] Specific gravity and viscosity of pumped liquid influence pump performance
Shaft power, discharge capacity and head are influenced by specific gravity and viscosity of pumped liquid.
Pump is manufactured based on the information of specification and operating condition given to us when
ordered. If the informed specification and condition will be changed, ask us for the possibility of usage before
you use the pump.
[4] Influence by temperature
Pump itself is not influenced by temperature change but pumped liquid changes its viscosity, vapor pressure,
chemical corrosion characteristics etc. according to the change of temperature. Therefore enough attention
should be paid to the change of temperature of pumped liquid.
MDF-L401
0.3
0.24
0 90 100
High temp. type (H) High temp. type (H)
Temp
(deg. C) Temp (deg. C
Max. allowable press. (MPa)
MDF-L250
MDF-L425
0.3
0.16
0 90 100
0.5
0.45
0 100
MDF-L422, 423
0.5
0.4
0 100
Standard type
Max. allowable press. (MPa)
Standard type
High allow. press. type (HI)
Temp
(deg. C
Max. allowable press. (MPa)
Standard type
High allow. press. type (HI)
Temp
(deg. C)
Max. allowable press. (MPa)
Standard type
Ambient temp: 0~40 deg. C
Ambient humidity: 35~85%RH

- 8 -
4. Names of parts
■Names of Parts
• MDF-L250 and 401
No.
1
2
3
5
7
8
9
11
12
13
15
16
17
No.
18
19
20
21
22
23
24
25
26
Q'ty
1
1
1
1
1
1
2
1
1
1
2
Parts name Material
M8×65, WITH SW, Q'TY5
FERRITE MAGNET+ALUMINUM ALLOY
STNLS STL
FC200
CFRETFE
PTFE
CFRETFE
M8×35, WITH SW, Q'TY1 M8×70, WITH SW, Q'TY5
M8×40, WITH SW, Q'TY3
Model 250 Model 401
Remarks
Front casing
Rear casing
Impeller
Drive magnet unit
Hex. head bolt
Hex. head bolt
Foot support
Cover A
Cover C
Cover B
Magnet capsule
Motor
Cap
Q'ty
Parts name Remarks
JIS B 2401
G 135
Only "H" type
Material
CF-D AA-E KK-ECC-ECA-D
PTFE
V: FKM E: EPDM A: AFLAS
Steel
STNLS STL
Alumina
ceramics 95% Alumina ceramics 99.5% SiC
®
1
1
1
1
1
1
2
1
1
Liner ring
High density carbon
Impeller thrust
Spindle
Bearing
Mouth ring
O ring
Gasket
Eye bolt
Rear casing cover
JIS B 2401
G 160
Only model 401
16 132
25
911
1
12
22
18
3
17
24
23
19
15
21520
26
87