IWAKI PUMPS MD-6 User manual

Read this manual before use of product
IWAKI Magnetic Drive Pump
MD-6/10 type
Instruction Manual

Thank you for selecting an Iwaki MD-6/-10 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 ················· 10
Operation 1. Before operation·················································· 13
Maintenance 1. Troubleshooting ·················································· 15
2. Maintenance & Inspection ································· 15

- 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 run pump dry.
If the pump runs without a liquid, the pump
is damaged by friction heat.
● 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 is beyond the range of 0-40°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.
● Do no use a damaged pump.
Using a damaged controller could lead to an
electric leak or shock.
● Wear part replacement
Follow instructions in this manual for wear
part replacement. Do not dismantle the
pump beyond the extent of the instructions.
Caution
Prohibited
Prohibited
Electrical shock
Prohibited
Caution
Earthing
Prohibited

- 3 -
2. Operating principle
The MD-6 & -10 are magnetic drive centrifugal pumps.
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
Front casing

- 4 -
3. Specification & Identification code
Identification code
Shaded-pole motor
MD - 6Z - 230GS
a b
a. Series model MD-6: Low flow
MD-6Z: High head
MD-10: High flow
b. Power voltage 230V (50/60Hz)
Capacitor motor
MD - 6Z - 220 E N 01
a b c d e
a. Series model MD-6: Low flow
MD-6Z: High head
MD-10: High flow
b. Power voltage 220: 220/240V (50/60Hz)
c. O ring material E: EPDM
No code: FKM
d. Motor N: Capacitor motor
e. Special version No code: Standard
01-99: Special design
Outline
Specification 50/60Hz
Model
Pump connection
bore (mm)
Max ow
(L/min)
Max
head
(m)
Norm
ow
(m-L/min)
Max SG
Motor
Mass
(kg)
Max
operating
pressure
(MPa)
Inlet Outlet Power
(V)
Rated
output
(W)
MD-6
14 14
8/9 1.0/1.4 0.8-2.8/
0.8-5 1.2
220/240
30.8 0.02
MD-6-N 50.9
MD-6Z 5.5/6.0 2.1/2.7 1.5-3.2/
1.5-4.5 1.1 30.8 0.04
MD- 6Z- N 50.9
MD-10 11/12 1.5/2.1 1-5/1-8 1.1 60.8 0.03
MD-10- N 50.9
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 as follows.
Liquid temp. Model
0-80C° MD-6/MD-6-N/MD-6Z/MD-6Z-N/MD-10-N
0-75C° MD-10
*Note that the liquid temperature is based on pumping clean
water and it changes with liquid property and operating con-
ditions.
e. Non freezing
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.

- 5 -
Model W
MD-6-N, 6Z-N·10-N
H L abc d e f
74 82
129 73 30 60 35 31 17
●MD-6 · 6Z · 10
Model W
MD-6, 6Z·10
H L abc d e f
74 92
105 73 30 60 45 31 17
●MD-6-N · 6Z-N · 10-N
g. Motor type
Single-phase shaded-pole motor with thermal protection
or Single-phase capacitor-run induction motor with thermal
protection
*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.
CAUTION
If pump stops frequently, turn off power and check for
impeller damage or clogging. See “Troubleshooting” on
page 15.
Outline
4. Outer dimensions

- 6 -
50Hz
10
6
6Z
123 4 5 6 78 9 10 12
11
3
2.5
2
1.5
1
0.5
L/min
m
60Hz
10
6Z
123 4 5 6 78 9 10 12
11
3
2.5
2
1.5
1
0.5
L/min
m
6
Motor (drive unit)
Do not wet the
pump and motor
units.
Outline
5. Performance curves 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.

- 7 -
Outline
7. Part names & Structure
No. Part names Q'ty Materials Remarks
1 Front casing 1 GFRPP
3 Rear casing 1
5 O ring 1 FKM, EPDM AS568-031
6Impeller 1GFRPP
8Spindle 1 Alumina ceramic
9 Thrust ring 1 UHMW-PE
15 Machine screw 4 Stainless steel
M4×28 with PW/SW
101 Motor 1
5
15
6
1
9
8
3
101

- 8 -
WARNING
● Risk of electrical shock. Turn off the power when the
pump or its electrical parts get wet by mistake. Do
not touch directory.
● No fire
Keep the pump away from dangerous or flammable
object.
● The pump is not designed for the use in food or bev-
erage industries. Contact us for detail.
CAUTION
● A strong magnet is inside the pump. Do not bring a
watch or floppy disk which may be adversely affected
by a magnetic force.
● Do not run pump dry. If the pump runs without a liq-
uid, friction heat damages the pump.
Installation
1. Before Installation
Read through this instruction manual before use. Carry
out installation work with a full understanding.
● 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.
● 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.

- 9 -
Installation
● Banned solutions
• A liquid that significantly swells
the used plastics
• Paraffinic hydrocarbons such as
gasoline and kerosene
• Halogenated hydrocarbons such
as trichloroethylene and carbon
tetrachloride
• Ether and low-grade ester
• Slurry (Never use slurry, which
wears out the pump bearings.)
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.
3. Under direct sunlight or wind
& rain.
● A strong magnet is inside the
pump. Do not use the pump with
any liquid which contains met-
als such as iron and nickel.
● For risk reduction, purchase and
install the fuse.
● Do not use solvents such as ben-
zin, alcohol, thinner for mainte-
nance or cleaning, otherwise the
coating discolours or comes off.
● Do not use any damaged pump.
Using a damaged pump may lead
to an electric leak or shock.
● An electrical failure of the pump
may adversely affect related devic-
es. Purchase and install an earth
leakage breaker separately.

- 10 -
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.
• Install the pump in a clear and
flat place.
• The pump should always be
free from liquid spillage.
• Keep good ventilation, taking
account of the self-heating of
pump.
2. Mounting position
This pump is not capable of
self-priming. The pump should
be installed lower than the suc-
tion liquid level.
3. Outlet direction
Always direct the outlet upward
or entrained air can not be
expelled.
4. Pump fixation
Secure the pump by fixing the
base. Do not install the pump
vertically.
5. Hose preparation
Flat the tube end before tubing.
2.2 Piping
1. In order to minimize piping resistance, have the 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-resist-
ant vinyl tube, otherwise the suc-
tion hose can be crushed by the
suction force (especially for hot
liquid). A braided tube or teflon
tube is recommended.
Direct the outlet upward
30cm
or
more

- 11 -
Air
3. Do not allow piping system to
weigh heavily on the plastic inlet
or outlet, otherwise the plastic
parts may deform and result in
failure.
4. Be sure the connection between
the pump, joints and pipes are cor-
rectly sealed.
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.
6. Insert the tube into inlet or outlet
as far as it will go.
CAUTION
Air is entrained if a suction tube
connection is not secured.
This may cause performance
reduction, dry running and
impeller seizing.
7. Use a clamp to secure the tube
connection and eliminate the pos-
sibility of leakage. Do not use a
wire instead of the clamp.
CAUTION
The inlet and outlet are made of
plastics. Do not tighten the clamp
too much.
Discharge-
side valve
Suction-side valve
Installation

- 12 -
■Connection diagram
●MD-6, 6Z and 10 types ●MD-6-N, 6Z-N and 10-N types
■Rated current & Starting current
Model Rated current Starting current
MD-6 0.15A / 0.14A 0.23A/0.2A
MD-6-N 0.07A / 0.07A 0.1A /0.1A
MD-6Z 0.30A/0.30A 0.35A/0.34A
MD- 6Z-N 0.08A/0.08A 0.1A /0.1A
MD-10 0.30A/0.30A 0.35A/0.34A
MD-10-N 0.08A/0.09A 0.1A /0.1A
Power source
Thermal protector Main coil
Rotor
Power source Capacitor
Thermal protector Auxiliary coil
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.

- 13 -
■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 operating the pump, check that the pump is
securely fixed.
● If foreign matters enter the pump, turn off the power
and remove them, otherwise failure or malfunction
may result.
● Do not run pump dry. If the pump runs without a liq-
uid, the pump is damaged by friction heat.
Operation
1. Before operation
CAUTION
1. Before operation, check that the pump is firmly installed in
piping via the inlet and outlet.
2. Do not run the pump with a discharge/suction valve closed.
3. Do not open the discharge valve or suction valve at once,
otherwise the magnetic coupling may disconnect (In this
case turn off the power.).

- 14 -
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 15.
■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.

- 15 -
2. Maintenance & Inspection
■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 Check conditions 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.

- 16 -
■Disassembling and assembling
Do not dismantle the pump beyond the extent in this manual.
We are not responsible for any person injury or property dam-
age caused by nonobservance of this instruction.
CAUTION
Before dismantling the pump, be sure to completely
remove liquid from the pump. Do not wet the motor.
1. Remove the four screws (15).
2. Remove the front casing (1).
3. Remove the impeller (6) together with the thrust ring (9),
holding the rear casing. Be careful not to lose the thrust
ring.
4. Remove O ring (5) from the rear casing.
5. Pull out spindle (8), holding the rear casing.
CAUTION
Protect the motor from dust or liquid during dismantle-
ment.
CAUTION
Do not remove the rear casing from the motor. We do not
take any responsibility for damage caused by nonobser-
vance.
15
1
5
9
68
101
■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
5 O ring
10,000hours
6Impeller
8Spindle
9 Thrust ring
101 Motor
Maintenance

- 17 -
■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.
■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.
Maintenance

T386-4 '10/07
( )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)
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