IWAKI PUMPS MD-55F User manual

Read this manual before use of product
IWAKI Magnetic Drive Pump
MD-55F/-100F type
Instruction Manual

Thank you for selecting an Iwaki MD-55F/-100F 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.
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.
Contents
Safety Instructions ······················································· 1
Outline 1. Unpacking & Inspection····························· 3
2. Operating principle ·································· 3
3. Identification code···································· 4
4. Specification ·········································· 4
5. Outer dimensions ···································· 5
6. Performance curves ································· 5
7. Overview & Label ···································· 6
8. Part names & Structure······························ 7
Installation 1. Before installation ···································· 8
2. Installation/Piping/Electrical wiring············· 10
Operation 1. Before operation ····································· 15
2. Operation ············································· 15
Maintenance 1. Troubleshooting······································ 18
2. Maintenance & Inspection ························· 18
3. Drainage ·············································· 20
Important Instruction
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
personal injury or property damage.
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:
Export Restrictions
Technical information contained in this instruction manual might be
treated as controlled technology in your countries, due to agreements
in international regime for export control.
Please be reminded that export license/permission could be required
when this manual is provided, due to export control regulations of your
country.

- 1 -
Power off
Safety Instructions
Prohibited
Prohibited
Prohibited
No modification
No dismantlement
Caution
Caution
Wear protectors
WARNING
● Turn off power.
Risk of electrical shock. Dismantling/assem-
bling the pump unit without turning off power
may cause an electrical shock. Before
engaging in any maintenance or inspec-
tion 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 speci-
fied 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 protective measures 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 -
Safety Instructions
CAUTION CAUTION
Prohibited
● 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 an 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 a power cable.
Risk of fire or electrical shock. Do not
scratch, modify, or pull a power cable. The
cable can also be damaged when it is heat-
ed or loaded with a heavy thing.
● Earthing
Risk of electrical shock. Always earth the pump.
●Do not pressurize the pump over the
maximum discharge pressure.
A leak may result from the sealing surface
of O ring, or the pump fails at worst.
●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:
1. Where ambient temperature can exceed
40°C or falls below 0°C.
2.
Under a flammable/corrosive atmosphere.
3. Under direct sunlight or rainwater
●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, static elec-
tricity may generate in the pump and may
cause static discharge. Take countermeas-
ures to remove static electricity.
● Fasten the front casing tight
Liquid may leak if front casing xing screws
are loose. Tighten the screws before initial
operation or at intervals.
Caution
Prohibited
Electrical shock
Earthing
Caution
Prohibited
Electrical shock
Prohibited

- 3 -
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, discharge
capacity, discharge head and volt-
age to see that the product is deliv-
ered as per order.
2. Check for transit damage, deformation, and loose bolts.
Outline
Inlet
Outlet
Driven magnet
Impeller
Drive magnet
Spindle
2. Operating principle
The MD-F is a compact magnetic drive centrifugal pump with
fluoroplastic and fine ceramic wet ends and is capable of handling
a strong acid and alkali.
The magnetic force between drive and driven magnets rotates the
impeller in the pump chamber, where a liquid is transferred from
the inlet to outlet.

- 4 -
3. Identification code
MD-55F/-100F
MD - 55 F G X K - 01
a b a c d e f
a. Series model
CFRETFE casing material
b. Pump size (motor output)
55(90W)/ 100(260W)
c. Connection
No code : R thread
d. Impeller type
X : Low viscosity
Y : Medium viscosity
e. Purpose
No code : Standard
K : Gold coating
f. Special version
No code : Standard
01-99 : Special design
Outline
4. Specification 50Hz
Model Impeller
type
Connec-
tion size
Max ow
(L/min)
Max
head
(m)
Norm ow Max SG
Motor
Mass
(kg)
Rated
output
(W)
Power
MD-55FX XR1 65 7.8 5.4m-30L/min 1.3 90 1-phase 100V/
1-phase 200V 5.4
MD-55FY Y60 5.4 3.8m-30L/min 2.0
MD-100FX XR1 125 10.5 7.5m-65L/min 1.2 260 1-phase 100V/
3-phase 200V 8.5
MD-100FY Y115 8.5 6m-60L/min 2.0
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 specific gravity is obtained at or near the maximum
flow. Note that the limitation varies with a duty point, ambient/
liquid temperature or liquid viscosity.
d. The maximum viscosity at SG.1.0 is up to 30mPa•s for all the models.
e. Allowable liquid temperature range is 0-80°C.
*Note that the liquid temperature range is based on pumping clean
water and it changes with liquid property and operating condi-
tions. Frozen liquid can not be transferred.
f. All the single-phase motors used for the MD-55F/-100F series are
capacitor-run induction motor.
g. See the specification label for information other than that articu-
lated above.

- 5 -
Outline
5. Outer dimensions
MD-55F
MD-100F
(62)
(178)
(63)
(99.3)
(43)
(152)
(58.3)
60 (90)
(39.5)
6. Performance curves
MD-55F/-100F
NOTE: This performance curve is collected when pumping clear
water at ambient temperature under a flooded suction system.
15
10
5
0 25 50 75 100 125 150
Head (m)
Capacity (l/min)
50Hz
MD-100FX
MD-100FY
MD-55FX
MD-55FY

- 6 -
Outline
7. Overview & Label
Motor (drive unit)
Do not wet the
pump and motor
units.
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
101 820 19
7
6
3 175
15
1
9 13 1112 221 14
101 20 12 19 3 5 9
6
2
21 14 1113 8 17
15
1
7
8. Part names & Structure
MD-55F
No. Part names Q'ty Materials
MD-55F MD-100F
1Front casing 1CFRETFE
2Bearing 2SiC
3Rear casing 1CFRETFE
5 O ring 1 FKM-A
6Impeller 1CFRETFE
7Shroud 1CFRETFE
8Spindle 1SiC
9Thrust ring 2SiC
11 Driven magnet 1FERRITE
MD-100F
No. Part names Q'ty Materials
MD-55F MD-100F
12 Magnet housing 1Aluminium alloy
13 Drive magnet 1FERRITE
14 Hex socket set screw 2 Steel
15 Hex head bolt 6 Stainless steel
17 Retainer ring 1SUS304
19 Bracket 1FC200
20 Spacer 1Aluminium
21 Hex socket set screw 1(2)* Steel
101 Motor 1 -
*The MD-100F has two hexagon socket set screws.

- 8 -
1. Before Installation
Read through this instruction manual before use. Carry out instal-
lation work with a full understanding.
WARNING
● Risk of electrical shock. Dismantling/assembling
the pump unit without turning off 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 or subject it to strong impact
during installation or transport.
● 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.
● Dropping or subjecting the pump to
strong impact, failure may result.
Handle the pump with care.
● The pump is not capable of self-prim-
ing. Always prime the pump before
operation.
● The motor is not water-/dust-proof. Do
not wet the motor, or it may fail.
● The pump doesn't have an ON-OFF
switch. The pump starts as a power
cable is plugged in.
Installation

- 9 -
Installation
● Banned solutions
• Halogenated hydrocarbons such as
trichloroethylene and carbon tetra-
chloride
• Ether and low-grade ester
• Slurry (Never use slurry, which
wears out the pump bearings.)
● A strong magnet is inside the pump.
Do not use the pump with any liquid
which contains metals such as iron
and nickel.
●Do not pull or knot a power cable or
place a heavy stuff on it. Damage to
a power cable could lead to a re or
electrical shock.
● Do not use any damaged pump. Using
a damaged pump may lead to an elec-
tric leak or shock.
CAUTION
Do not install or store the pump in the
following places:
1. Where ambient temperature
exceeds 40°C or falls below 0°C.
2. In a dusty/humid place.
3. Under direct sunlight or wind &
rain.
● Install the pump as close to a supply
tank. Keep a liquid level in the tank
higher than the pump at any time.
● An electrical failure of the pump may
result in electric shock. Purchase and
install an earth leakage breaker sepa-
rately.
Nickel
Iron

- 10 -
Installation
2. Installation/ Piping/ Electrical wiring
Stop working upon sensing danger or abnormality.
2.1 Installation
1. Installation location
Select a convenient place for maintenance and inspection. Observe
the allowable room temperature range of 0-40°C and the allowable
maximum ambient humidity of 90%RH. Ensure proper ventilation
at the operation site. Install the pump where it can be kept dry.
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 a suc-
tion liquid level, or a bearing may
be worn soon by entrained air.
3. Outlet direction
Always direct the outlet upward or
entrained air can not be expelled.
4. Do not mount the pump vertically.
5. Pump fixation
Secure the pump by fixing its base
on a flat and a stable foundation.
NOTE: Use corrosive resistant fixing
screws.
Direct the outlet upward
30cm
or
more

- 11 -
Installation
2.2 Piping
■Before tubing
• Using a high ow pump and a small supply tank, a liquid level in
the tank changes greatly.
• Do not allow a drop of adhesive agent or sealant into pipework.
They may cause fatal damage to the pump.
• If pipework directory weighs on the pump, deformation or damage
may result. Be sure to install pipe supports.
Plumbing layout
1. Flow/head adjustment & maintenance valves
Install a ball valve on a discharge line for flow rate adjustment and
on a suction line for the convenience of maintenance, as close to
the pump as possible.
2. Pressure gauge
Install a pressure gauge for monitoring discharge line pressure.
3. Drain valve
Install a drain valve in between the pump inlet and a suction valve
for blowing down liquid.
4. Air vent line and air vent valve
Install an air vent line and an air vent valve when a discharge line
is laid long in a horizontal direction.
5. Check valve
Install an check valve when a discharge line is laid long in a verti-
cal direction.
Discharge-side valve
Suction-side valve
Discharge pressure
monitoring gauge
Three way joint
Pipe support
Check valve
(Backflow prevention)
Discharge valve
(Shout off valve)
Flooded suction
Air vent valve
Drain valve
Air vent line
Pipe support
Suction valve (Shut off valve)

- 12 -
Installation
■ Suction line
•Avoid any loops in a plumbing run that could form a vapour trap. A
suction line should be laid on a rising gradient of 1/100 toward the
pump so as to expel air easily.
Suction line examples
Acceptable Unacceptable
•In order to minimize plumbing resistance, have plumbing shortest
with the minimum bends. Note cavitation*¹ tends to occur when
plumbing length is too long.
•A liquid level should be at least 30cm higher than the tank outlet for
the prevention of air ingress.
•Keep liquid in the supply tank free from foreign matters. Clean the
supply tank at intervals.
•Be sure to secure connections on a suction line for the prevention
of entrained air. The presence of air in a suction line may prevent
liquid delivery.
■ Discharge line
•Piping resistance changes with properties of liquid, specific gravity,
liquid temperature and pipe length, and may adversely affect pump
operation when the resistance is too great. In order to minimize the
piping resistance, have piping length shortest with the minimum
bends. Contact us for detail.
•When a discharge line is too long, water hammer*² phenomenon
may occur and damage the pump with impact pressure when the
pump stops running. Provide a check valve to prevent water ham-
mer.
Word & Terms:
*1 Air bubbles caused by a negative pressure in the pump, accompanied with vibration and
noise: Performance deterioration or parts corrosion results.
*2 Shutting off a discharge line at once, liquid pressure change causes an impact pressure,
accompanying impact noise and vibration. This phenomenon is called water hammer.
Water hammer damages the pump & pipework and may cause leakage.
Ascending gradient
Descending gradient
U-shaped piping Arched piping
Air trap
Flooded suction
Suction lift

- 13 -
Installation
<Thread connection>
• Use of a Teflon pipe or a Teflon-lined
pipe is recommended.
• Select a suitable pipe bore for secure
connection. See page 4 for applicable
connection size.
• Wrap a thread seal tape around the
exposed threads of pipes, a pump inlet
and outlet to create an air- and water-
tightness before connection.
CAUTION
Do not tighten a pipe too much, or a
plastic inlet or outlet may break.
CAUTION
Imperfect connection on a suction
line introduces air into the inside. Air
ingress may cause a poor flow, dry
running and consequently impeller
seizing.
Threads
• Be sure to remove a cushion from the
outlet before pipework. Be careful not
to damage the wet ends.

- 14 -
Installation
2.3 Electrical wiring
Electrical wiring must be done by a 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
CAUTION
Risk of electric shock. Do not handle this product with wet
hands.
CAUTION
Be sure to turn off power before wiring work.
1. Observe the power voltage, number of phases, and power frequen-
cy specified on a spec label.
2. Three phase motors rotate clockwise when U, V and W motor
terminals are connected in line with R, S and T power supply ter-
minals. The motors rotate anticlockwise if two out of these three
terminal combination are interchanged.
3. In order to secure earthing, purchase an earthing wire and connect
it to a screw with an engraved "E".
4. Install a leakage breaker to reduce the possibility of a fire or
motor burnout.
5. Check for miswiring to reduce the risk of a short circuit or an
electrical leak.

- 15 -
Operation
1. Before operation
Read through this section before use.
CAUTION
● Do not keep a discharge or a suction line little open
or closed in operation.
● Do not open/narrow a discharge or a suction line
sharply, otherwise the magnetic coupling*1may be
disconnected*2(In this case turn off power.).
● If foreign matters enter the pump, turn off 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.
Word & Terms:
*1 A pair of drive and driven magnets
*2 A state that a driven magnet (combination of impeller and magnet capsule units) does not
rotate in sync with the drive magnet.
■ Preparations for operation
1. Check that the pump is under a flooded suction system and a liquid
in a supply tank is at an appropriate level.
2. Check the connection between the pump and piping.
3. Check the pump is securely anchored.
2. Operation
•Do not run the pump in closed-discharge operation. Always keep
the rated minimum flow rate (a tenth of the max flow rate).
•The pump should never be operated for a lengthy period (1 minute
or more) with a discharge valve closed. Operation below the mini-
mum flow can reduce lubricant and cooling effects on sliding parts.
This could lead to failure.
•Do not send any medium other than fluid.
•Be sure to secure connections on a suction line for the prevention
of entrained air. The presence of air in a suction line may prevent
liquid delivery.
•Do not turn ON and OFF power in a short time. Before resuming
operation, wait 30 minutes to turn on power after a motor has com-
pletely stopped rotating. Otherwise, motor may fail.

- 16 -
■Operating procedure
After installation, piping and wiring work are completed, operate the
pump in accordance with the following procedures.
No. Procedure Points to be checked
1Check piping, wir-
ing and voltage.
• See "2.2 Piping" and "2.3
Electrical wiring" sections.
• Check the spec label to see if
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 wheth-
er flooded suction application or
suction lift application.
Note: If the pump chamber is not
filled with liquid due to resid-
ual air in it, run the pump for
degassing and eliminate air
completely. See "■ Degassing"
on the next page.
4 Supply power to the
pump.
• Check the item 1, 2 and 3. Then
turn on power and start the pump.
Note: Do not keep a discharge-
side valve closed more than 1
minute.
Operation
No. Procedure Points to be checked
5Adjust discharge
capacity & dis-
charge head to
specified level.
• Open a discharge-side valve grad-
ually till a flow and a head reach
a specified level. Do not open or
close the valve sharply.
Note: Check that the pump trans-
fers a liquid without trouble.
If there is a problem, turn off
power immediately and solve
causes. See "Troubleshooting"
section.
6 Points to be
checked during
operation
• Do not allow foreign matters to
enter the pump. Foreign mat-
ters may cause an impeller to be
locked, hindering liquid circulation.
In this case turn off power immedi-
ately (Contact us).
• Turn off power when a leakage
breaker operates. Investigate a
root cause on the basis of the
Trouble shooting section.

- 17 -
Operation
■Shutdown
No. Procedure Description
1Close a discharge-
side valve.
Close a discharge-side valve gradu-
ally. Do not cause sudden closure
by using a solenoid valve.
2 Turn off power. Check if a 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
Empty 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.
Follow "■ Operating procedure" on page 16 for resuming operation.
■Degassing
Open a discharge line. The end of the line immersed in liquid is not
ideal for degassing. Take it out from liquid as necessary. Then run the
pump for one second. Repeat the one-second operation from three to
five times to expel air completely.
If an air vent line is laid on, open it instead of a discharge line before
degassing.
P
Discharge line
P
Air vent valve
Air vent line
Discharge line

- 18 -
Maintenance
1. Trouble shooting
Upon sensing abnormality, stop operation immediately and remove
problems according to this section.
If the following measures do not help removing problems, contact
us or your nearest distributor.
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.
2. Maintenance & Inspection
Handling of the pump, maintenance and inspection should be car-
ried out within this instruction manual. Do not handle 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.
2.1 Maintenance
■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.
Tightening torque
MD-55F 3.0N•m
MD-100F 3.5N•m
■Use with an earth leakage breaker
When an earth leakage breaker is used and it has worked, always
solve the root cause of problems. Be sure to unplug the pump before
investigation.