IWAKI PUMPS MD-F Series User manual

Read this manual before use of product
IWAKI Magnetic Drive Pump
MD-F type
Instruction Manual

Thank you for selecting an Iwaki MD-F type Magnetic Drive Pump.
This instruction manual deals with "Safety Instructions", "Outline",
"Installation", "Operation" and "Maintenance" sections.
Please read through this instruction manual to ensure the opti-
mum performance, safety and service of your pump.
WARNING Nonobservance or misapplication of the
contents of “Warning” section could lead to
a serious accident which may result in death.
CAUTION Nonobservance or misapplication of the
contents of “Caution” section could lead to
a personal injury or damage to the product.
Types of Symbols
Indicates a prohibited action or procedure. Inside or near this cir-
cle, a concrete and practical image of the activity to be avoided is
depicted.
Indicates an important action or procedure which must be per-
formed or carried out without fail. Failure to follow the instruc-
tions herein can lead to malfunction or damage to the pump.
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 personnel injury or property damage.
●Observe the instructions accompanied with "WARNING" or
"CAUTION" in this manual. These instructions are very impor-
tant for protecting pump users from dangerous situations.
●The symbols on this instruction manual have the following meanings:
Important Instruction
This instruction manual should be kept on hand by the end user
for quick reference.
Contact us or your nearest dealer if you have any questions.
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 complementary 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.
Contents
Safety Instructions ··········································································1
Outline 1. Unpacking & Inspection·······································3
2. Operating principle···············································3
3. Specification & Identification code······················4
4. Outer dimensions··················································5
5. Performance curves ·············································6
6. Overview & Label ················································6
7. Part names & Structure·········································7
Installation 1. Before installation·················································8
2. Installation/Piping/Electrical wiring ················· 11
Operation 1. Before operation··················································15
Maintenance 1. Troubleshooting ··················································17
2. Maintenance & Inspection ································· 17

- 1 -
Power off
Safety Instructions
Prohibited
Prohibited
Prohibited
No modification
No dismantlement
Caution
Caution
Wear protectors
WARNING
● Turn off the power.
Risk of electrical shock. Dismantling/
assembling the pump unit without turn-
ing off the power may cause an electrical
shock. Before engaging in any maintenance
or inspection work, be sure to turn off the
pump and related devices.
● Terminate operation.
On sensing any abnormality, stop operation
immediately and inspect/solve problems.
● For specified application only
The use of the pump in any application
other than those clearly specified may result
in injury or damage. Use the pump in a
specified condition.
● No dismantlement/modification
Do not dismantle/modify the pump. We are
not responsible for any accidents or damage
due to modification.
● Wear protective clothing.
Always wear protective clothing such as
safety goggles and protective gloves during
pipework or dismantlement.
● Restriction on operator
The pump should be handled by a qualified
person with a full understanding.
● Specified power only
Do not apply any power other than the
specified one on the nameplate. Otherwise
damage or fire may result.
● Do not wet the pump.
If a liquid spills over electric parts or wires, a
fire or electrical shock may result. Install the
pump in a place free from liquid spillage.
● Ventilation
Poisoning may result when handling a toxic
or odorous liquid. Keep good ventilation in a
work area.
● Countermeasure against efflux
Take a protective measure against the acci-
dental efflux caused by pump or pipe break-
age.
● Damaged pumps.
Do not use any damaged pump. Using a
damaged pump may lead to an electric leak
or shock.
CAUTION
Prohibited
Prohibited

- 2 -
Prohibited
CAUTION CAUTION
Safety Instructions
● Do not place the pump close to water.
The pump is not dust-/water-proof construc-
tion. The use of the pump in a humid place
or a place where the pump can get wet may
result in electrical shock or short-circuit.
● Do not damage the power cable.
Risk of fire or electrical shock. Do not
scratch, modify, or pull the power cable.
The cable can also be damaged when it is
heated or loaded with a heavy thing.
● Do not cover the motor during operation.
Or heats builds up and fire or mechanical
failure may result.
● Earthing
Risk of electrical shock. Always earth the pump.
●Install an earth leakage breaker.
An electrical failure of the pump may ad-
versely affect related devices. Purchase and
install an earth leakage breaker separately.
● Power cable is not replaceable.
Do not use any damaged power cable for
the prevention of a fire or electrical shock.
The cable is not replaceable, so that the
whole pump unit needs to be replaced when
the cable is damaged.
● Limited operating site and storage
Do not install or store the pump in the fol-
lowing places where...
1. Ambient temperature exceeds 40°C or
falls below 0°C.
2. Under a flammable/corrosive atmos-
phere.
● Do not drain a harmful chemical liquid
directly on the ground or the floor.
Use a container.
●Disposal of the used pump
Dispose of any used or damaged pump
in accordance with relevant regulations.
Consult a licensed industrial waste products
disposing company.
● Static electricity
When low electric conductivity liquids such
as ultra-pure water and fluor inactive liquid
(e.g. FluorinertTM) are handled, the static
electricity may generate in the pump and
may cause static discharge. Take counter-
measures to remove the static electricity.
Caution
Prohibited
Electrical shock
Prohibited
Caution
Earthing

- 3 -
2. Operating principle
The MD-F is a magnetic drive centrifugal pump.
The magnetic force of the motor drives the impeller mag-
net and rotates the impeller in the pump chamber, where a
liquid is transferred from the inlet to outlet.
Before use, check the specification, limitation and hazardous
nature of the pump.
1. Unpacking & Inspection
On unpacking the product, check the following points. If
you find any problems, contact your nearest distributor.
1. Check the information on the
nameplate such as model, dis-
charge capacity, discharge head
and voltage to see that the prod-
uct is delivered as per order.
2. Check for transit damage, deformation, and loose bolts.
Outline
Inlet
Outlet
Driven magnet
Impeller Drive magnet
Spindle

- 4 -
3. Specification & Identification code
Identification code
MD - 15F X - 220 N 01
a b c d e
a. Series model MD-15F/ -30F/ -55F/ -100F
b. Impeller type X, Y, Z
c. Power voltage 220: 220/240V (50Hz)
d. Motor type N: New type motor)
e. Special version No code: Standard
01-99: Special design
MD - 55F X - 01
a b c
a. Series model MD-55F/ -100F
b. Impeller type X, Y, Z
c. Special version No code: Standard
01-99: Special design
NOTE: Special design is different from standard in power cable
length, outlet direction, plug shape or terminal treat-
ment.
Outline
Specification 50/60Hz
Model Impeller
type Connec- tion Max
ow
(L/min)
Max
head
(m)
Norm
ow
(m-L/min) Max SG
Motor Mass
(kg)
Max
operating
pressure
(MPa)
Power
(V) Rated
output
(W)
MD-15FX-220N XNPT 1/2 10/- 4.1/- 3-5/- 1.2/-
220/240
(1ph)
10 1.8 0.06MD-15FY-220N Y9/10 3/4 2-5/3-7 1.9/1.3
MD-15FZ-220N Z-/10 -/3.1 -/2.5-6 -/1.9
MD-30FX-220N X
NPT 1/2
13/15 8/11 5.5-8/
8.5-9.5 1.5/1.3
45 4.0 0.17
MD-30FY-220N Y10/12 6/8 4.5-6.5/
6-8 1.9/1.5
MD-30FZ-220N X-/11 -/7 -/5.5-7 -/1.9
MD-55FX X
R1
65/- 7.8/- 6.4-30/- 1.3/-
90 5.4 0.12MD-55FY Y60/65 5.4/7.8 3.8-30
/6.4-32 2.0/1.3
MD-55FZ Z-/55 -/6.0 -/4.5-25 -/2.0
MD-100FX X
R1
125/- 10.5/- 7.5-65/- 1.2/- 220/240
(1ph)
220/380
(3ph)
400/440
(3ph)
260/-
260/265
-/265
8.5 0.17MD-100FY Y115/135 8.5/11.5 6-60/
8-70 2.0/1.3
MD-100FZ Z-/115 -/8.5 -/6.5-55 -/1.9
NOTE:
a. Performance data is based on pumping of clear water at
ambient temperature.
b. The maximum flow is obtained at zero discharge head, and
the maximum head is obtained at the maximum pressure.
c. The maximum viscosity is up to 30mPa•s (at SG 1.0).
d. Allowable liquid temperature is 0-80°C.
*Note that the liquid temperature is based on pumping clean
water and it changes with liquid property and operating con-
ditions.
e. Non freezing

- 5 -
f. The maximum specific gravity is obtained at or near the
maximum flow. Note that the limitation varies with a duty
point, ambient or liquid viscosity.
g. Motor type
MD-15F/-30F/-55F: Single-phase capacitor-run induction
motor
MD-100F: Single-phase capacitor-run induction
motor or 3-phase induction motor
*The pump stops when the motor temperature becomes
extremely high due to ambient or liquid temperature rise or
overload operation. The pump resumes operation after tem-
perature falls to a normal.
*For the IEC motor, consult your nearest distributor.
CAUTION
● If pump stops frequently, turn off power and check for
impeller damage or clogging. See “Troubleshooting” on
page 17.
● Do not dismantle the motor. Contact us for inspection.
Outline
4. Outer dimensions
●MD-15F-N/ -30F-N
●MD-55F/ -100F
MD-15F-N
MD-30F-N
Model W H Labc d e f G
95
120
120
130
186
231
–
40
50
64
68
100
55
60
34 28.5
38.5
123.5
15239
Le
ia
bGC
W
f
d
H
MD-55F
MD-100F
Model W H Labc d e f G
120
156
155
174.3
270
320
40
70
64
100
100
110
65
75
58.3 39.5
43
198.5
19563
Le
a
bGC
W
f
d
H
27
9

- 6 -
Motor (drive unit)
Do not wet the
pump and motor
units.
Outline
5. Performance curves
●MD-15F-N/ -30F-N
*Performance data is based on pumping of clear water at ambi-
ent temperature.
●MD-55F/ -100F
*Performance data is based on pumping of clear water at ambi-
ent temperature.
6. Overview & Label
Inlet Base
Fix the pump securely.
Specification label
Use the pump accord-
ing to the specifica-
tions on the label.
Outlet
Pump unit (Liquid feeding unit)
Not capable of self-priming. Always prime
the pump before operation.
15
10
5
0 2 4 6 8 10 12
15
10
5
0 2 4 6 8 10 12
50Hz 60Hz
MD.30FX
MD.30FX
MD.30FY
MD.15FY
MD.15FZ
MD.30FZ
MD.30FY
MD.15FX
MD.15FY
15
10
5
0 25 50 75 100 125 150
15
10
5
0 25 50 75 100 125 150
50Hz 60Hz
MD.100FX
MD.100FY
MD.55FX
MD.55FY
MD.100FY
MD.100FZ
MD.55FY
MD.55FZ
Flow rate Flow rate
Flow rate Flow rate
Head Head

- 7 -
Outline
7. Part names & Structure
No. Part names Q'ty Materials Remarks
1 Front casing 1 CFRETFE
2Bearing 2SiC
3 Rear casing 1 CFRETFE
5 O ring 1 FKM
6Impeller 1CFRETFE
8Spindle 1SiC
9 Thrust ring 2 SiC
15 Machine screw 6 Stainless steel
101 Motor 1
101 2 8 3 5 15
6
1
9

- 8 -
Installation
1. Before Installation
Read through this instruction manual before use. Carry
out installation work with a full understanding.
WARNING
● Risk of electrical shock. Dismantling/assembling the
pump unit without turning off the power may cause
an electrical shock. Before engaging in any main-
tenance or inspection work, be sure to turn off the
pump and related devices.
● Electrical work or wiring must be carried out by a
qualified person according to local laws or regula-
tions.
CAUTION
● Do not drop the pump.
● A strong magnet is inside the pump. Do not bring a
watch or floppy disk which may be adversely affect-
ed by a magnetic force.
● Do not run pump dry. If the pump runs without a liq-
uid, friction heat damages the pump.
● Dropping or subjecting the pump to
strong impact, failure may result.
Handle the pump with care.
● The pump is not capable of self-
priming. Always prime the pump
before operation.
● Allowable liquid temperature range
is 0-80°C. Non-freezing. Note
the range may change with liquid
property.

- 9 -
Installation
● A strong magnet is inside the
pump. Do not use the pump with
any liquid which contains metals
such as iron and nickel.
CAUTION
Do not install or store the pump in
the following places where...
1. Ambient temperature exceeds
40°C or falls below 0°C.
2. In a dusty/humid place or cor-
rosive atmosphere.
3. Under direct sunlight or wind &
rain.
● Observe the maximum ambient
humidity of 90%. The motor is not
water-/dust-proof. Do not wet the
motor, or it may fail.
● Banned solutions
• Halogenated hydrocarbons such
as trichloroethylene and carbon
tetrachloride
• Ether and low-grade ester
• Slurry (Never use slurry, which
wears out the pump bearings.)
● Do not place dangerous or am-
mable goods near the pump for
your safety.
● An electrical failure of the pump
may adversely affect related
devices. Purchase and install an
earth leakage breaker separately.
● Non-condensing. Do not wet the
motor.
● Do not dismantle/modify the pump.
We are not responsible for any
accidents or damage due to modi-
fication.

- 10 -
Installation
● Do not use any damaged pump.
Using a damaged pump may lead
to an electric leak or shock.
● Do not get the motor wet. The
pump is not dust-/water-proof or
rust-proof construction.
● Risk of fire or electrical shock. Do
not scratch, modify, twist or pull the
power cable. The cable can also
be damaged when it is heated or
loaded with a heavy thing. Stop
operation and contact us if the
power cable is damaged.
● Risk of burning. Do not touch the
motor. Motor surface temperature
rises high during operation.
● Noise level during operation is as below.
Model Noise level Model Noise level
MD-15FX 55dB MD-55FX 55dBMD-15FY MD-55FY
MD-15FZ MD-55FZ
MD-30FX 60dB MD-100FX 75dBMD-30FY MD-100FY
MD-30FZ MD-100FX
*Noise level is measured in A scale at a distance of 1m.

- 11 -
Installation
2. Installation/ Piping/ Electrical wiring
Stop working upon sensing danger or abnormality in
work.
2.1 Installation
1. Installation location
Select a convenient place for
maintenance and inspection.
Observe the allowable room tem-
perature of 0-40°C and ambient
humidity of 90%RH.
2. Mounting position
This pump is not capable of self-
priming. Flooded suction applica-
tion is ideal. The pump should be
installed 30cm lower than the suc-
tion liquid level, or bearing may be
worn soon by entrained air.
3. Outlet direction
Always direct the outlet upward or
entrained air can not be expelled.
Do not mount the pump vertically.
4. Pump fixation
Secure the pump by fixing the
base. Do not install the pump
vertically.
Direct the outlet upward
30cm
or
more
CAUTION
● Wear protective clothing.
Always wear protective clothing such as safety gog-
gles and protective gloves during pipework or dis-
mantlement.
● A qualied operator only
The pump must be handled or operated by a quali-
ed person with a full understanding of the pump.
Any person who is not familiar with this product
should not take part in operation or management.

- 12 -
Installation
2.2 Piping
1. In order to minimize the piping resistance, have piping short-
est with the minimum bends. For the prevention of cavitation,
have the suction piping bore wide as much as possible.
2. Use a corrosion-/pressure-resistant vinyl tube, otherwise
the suction hose can be crushed by the suction force (espe-
cially for hot liquid). A braided tube or Teflon tube is recom-
mended.
3. For the MD-55F & -100F, be sure
to remove a cushion from the
outlet before pipework. Be careful
not to damage the wet ends, espe-
cially SiC parts.
4. Select a suitable tube bore for
secure connection.
5. Install valves on both discharge
and suction lines.
• Suction-side valve:
For easy pump removal and
maintenance.
• Discharge-side valve:
For adjustment of the flow rate
and discharge head.
Discharge-
side valve
Suction-side valve

- 13 -
■Connection diagram
● Single-phase capacitor-run induction motor
(MD-15/-30/-50/-100F types)
● 220/380V 3-phase motor
(MD-100F type)
Installation
2.3 Electrical wiring
Electrical wiring must be done by qualified person who has a
full knowledge of safety. We are not responsible for the injury
or damage accident due to nonobservance of this warning.
Contact us or your nearest distributor for wiring as necessary.
■Before wiring
1. Confirm that the power is disconnected before work.
2. Wiring work should be done in accordance with electric
work requirements. Use the recommended wiring accesso-
ries and follow electrical installation requirements.
3. Apply the specified power voltage. See the spec label.
4. The pump doesn't have the ON-OFF switch. The pump
starts as the power cable is plugged in.
5. Earth the pump by an earthing wire.
6. When a leakage breaker is used.
Always solve the root cause when a leakage breaker oper-
ates. Replace the fuse and resume operation. Be sure to
unplug the pump before investigation.
Brown
Blue
Thermal protector
Power source
Yellow/Green
Auxiliary coil
Capacitor
Main coil
Thermal protector
Thermal
protector
Power
source Rotor
(220V)
Red
Gray
W2
U1
White
Blue
U2
V1
Black
Yellow
V2
W1

- 14 -
■Rated current & Starting current (50/60Hz)
Model Rated current Starting current
220/240V
Single phase 220/380V 3 phases 400/440V 3 phases 220/240V Single phase 220/380V 3 phases 400/440V 3 phases
MD-15FX-220N 0.18 / - - - 0.3 / 0.29 - -
MD-15FY-220N 0.18 / 0.2 - - 0.4 / 0.4 - -
MD-15FZ-220N - / 0.2 - - 0.4 / 0.4 - -
MD-30FX-220N 0.41 / 0.49 - - 0.4 / 0.4 - -
MD-30FY-220N 0.37 / 0.37 - - 1.2 / 1.25 - -
MD-30FZ-220N - / 0.32 - - 1.2 / 1.25 - -
MD-55FX 1.0 / - - - 1.2 / 1.25 - -
MD-55FY 1.0 / 0.9 - - 1.1 / 1.0 - -
MD-55FZ - / 0.9 - - 1.1 / 1.0 - -
MD-100FX 1.93 / - 1.18-0.69 / - 0.62-0.6 / - 3.8-4.3 / - 3.8-2.2 / - 1.9-2.2 / -
MD-100FY 1.93-1.93 /
1.85-1.83 1.18-0.69 / 1.17-0.67 0.62-0.6 / 0.6-0.58 3.8-4.3 / 3.6-4.0 3.8-2.2 / 3.7-2.1 1.9-2.2 / 1.85-2.1
MD-100FZ - /
1.85-1.83 - / 1.17-0.67 - / 0.6-0.58 - / 3.6-4.0 - / 3.7-2.1 - / 1.85-2.1
Installation
● 400/440V 3-phase motor
(MD-100F type)
Thermal protector
Thermal
protector
Power
source
(380V)
Red
Gray
W2
U1
White
Blue
U2
V1
Black
Yellow
V2
W1
Thermal protector
Thermal
protector
Power
source

- 15 -
■Operation
After installation, piping and wiring work are completed, oper-
ate the pump in accordance with the following procedures.
No. Procedure Points to be checked
1 Check piping, wir-
ing and voltage. • See "2.2 Piping" and "2.3 Electrical wiring" sections.
• Check the spec label to see if the
power supply voltage is correct.
2 Open or close a
valve. • Fully open a suction-side valve. • Fully close a discharge-side valve.
3 Prime the pump
chamber. • Prime the pump with liquid (In suc- tion lift application).
4 Supply power to the
pump. • Check the item 1, 2 and 3. Then turn on power and start the pump.
5 Adjust discharge
capacity & dis-
charge head to
specified level.
Open a discharge-side valve gradu-
ally till the flow and head reach
a specified level. Do not open or
close the valve at once.
Note: Do not keep the discharge-
side valve closed more than 1
minute.
Note: Check that the pump trans-
fers a liquid without trouble.
If there is a problem, turn
off the power immediately
and solve the cause. See
"Troubleshooting" section.
● Before operation, check that the pump is firmly
installed in piping via the inlet and outlet and the
pump is securely fixed.
● Do not run pump dry. If the pump runs without a liq-
uid, the pump is damaged by friction heat.
● Do not run the pump with a discharge/suction valve
closed.
● Do not open the discharge valve or suction valve at
once, otherwise the magnetic coupling may discon-
nect (In this case turn off the power.).
Operation
1. Before operation
CAUTION

- 16 -
Operation
No. Procedure Points to be checked
6 Points to be
checked during
operation
• Do not allow foreign matters to
enter the pump. Foreign matters
may cause impeller to be locked,
hindering liquid circulation. In this
case turn off power immediately
(Contact us).
• Turn off power when the leakage
breaker operates. Investigate the
root cause on the Trouble shooting
section of page 17.
■Shutdown
No. Procedure Description
1 Close a discharge-
side valve. Close the discharge-side valve gradually. Do not use the solenoid
valve.
2 Turn off power. Check if the motor stops rotating
smoothly as turning off power. If
it is not smooth, check the motor.
Contact us for detail.
■Before a long period of storage
Remove the liquid from the pump before it is stored for a long
time. In addition, run the pump with clean water for 5 minutes
every 3 months to prevent the motor bearing from being stuck.
■Drainage
WARNING
● Turn off power before work.
● Always wear protective clothing such as safety gog-
gles and protective gloves during pipework or dis-
mantlement.
CAUTION
● Do not get wet with chemical when removing the
hose. Do not wet the motor or electric parts.
● Do not drain a harmful chemical liquid directly on
the ground or the floor. Always use a container.
■Procedure
1. Turn off power. Make sure no one turns on the power while
working on the pump.
2. Close the discharge- and suction-side valves fully.
3. Place a container under the pump and loosen the hose
clamp. Pull out hoses from the inlet and outlet. Be careful
not to get wet with chemicals.
4. Unfix and take out the pump.
5. Drain residual chemicals through the inlet. Do not drain a
harmful chemical liquid directly on the ground or the floor.
Use a container.

- 17 -
2. Maintenance & Inspection
WARNING
● Always wear protective clothing such as safety gog-
gles and protective gloves during pipework or dis-
mantlement.
CAUTION
● Do not get wet with chemical when removing the
hose. Do not wet the motor or electric parts.
● Do not drain a harmful chemical liquid directly on
the ground or the floor. Always use a container.
■Retightening
After a long period of operation or storage, the pump head
mounting screws may be loose. Tighten the mounting screws
as necessary, but then do not deform the plastic pump head.
■Daily inspection
Always check for abnormality in vibration, noise, current value,
and discharge capacity. Stop operation on sensing any abnor-
mality. And solve problems on the trouble shooting section.
Maintenance
Phenomenon
Causes
The pump does not run. Poor discharge head Overcurrent Noise and vibration problem Leakage Measure
Wrong wiring Inspect wiring. Rewire as
necessary.
Motor failure Contact us.
Air is trapped. Eliminate air.
Air suction from the inlet Check suction piping.
Dry running Prime the pump before
operation.
Too high SG or viscosity Replace with suitable pump.
Impeller magnet hits the
rear casing Contact us.
Impeller is damaged. Contact us.
Foreign matters on the
impeller. Contact us.
O ring is damaged Contact us
Pump head mounting
screws are loose. Tighten the mounting
screws.
1. Trouble shooting
Handling of the pump, maintenance and inspection should
be carried out within this instruction manual. Do not han-
dle the pump beyond the descriptions in this manual.
We are not responsible for any personal injury or property
damage due to nonobservance of this warning. Contact us
or your nearest distributor as necessary.

- 18 -
■Wear parts
● Replace wear parts before the end of estimated life.
● The estimated life is calculated based on the continuous
operation with ambient temperature clean water and chang-
es with operating conditions.
●We are note responsible for damage due to use of slurry.
● Replace O ring with new one every time dismantling the
pump despite of the estimated life.
No. Parts Estimated life
1 Front casing
10,000hours
3 Rear casing
5 O ring
6Impeller
101 Motor
Maintenance
15
15
3
6
11
101