IWAKI PUMPS MDM Series User manual

IWAKI Magnetic Drive Pump
MDM Series (Long coupling type)
Instruction Manual
Read this manual before use of product
This is patent pending product.

Thank you for selecting IWAKI Magnetic Drive Pump MDM Series.
This instruction manual, which is divided into five sections, name-
ly "Safety", "Outline of Product", "Installation", "Operation" and
"Maintenance", deals with the correct handling and operation procedures
for the pump. To make maximum use of the pump and to ensure safe and
long time operation of the pump, please read this manual thoroughly and
carefully prior to operating the pump.
Contents
SAFETY SECTION .......................................................................... 1
OUTLINE OF PRODUCT ................................................................. 4
1. Unpacking and inspection ........................................... 5
2. Model code ................................................................. 6
3. Conditions to be used ................................................. 7
4. Structure and names of parts ..................................... 8
INSTALLATION ................................................................................ 9
5. Installation..................................................................10
6. Piping.........................................................................11
7. Electrical wiring ..........................................................13
8. Protection...................................................................13
OPER ATION ...................................................................................14
9. Precautions on operation ...........................................15
10. Operation...................................................................16
11. Pump stopping ...........................................................16
MAINTENANCE ..............................................................................17
12. Troubleshooting .........................................................18
13. Maintenance & inspection......................................... 20
14. Disassembling & assembling .................................... 23
15. Repair parts list..........................................................31
EC DECLARATION OF CONFORMITY ......................................... 36
Information on CE conformity ..........................................................37

- 1 -
Safety Section
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.
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 dam-
age 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 with-
out fail is indicated. Inside this circle, a concrete
activity to be performed is depicted.
Export Restrictions
Technical information contained in this instruction manual might be treated as con-
trolled 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 manu-
al is provided, due to export control regulations of your country.
For Use of Our ATEX-Certifed Models in Explosive Environments
Use the attached additional instructions as well as this standard manual.

- 2 -
Safety Section
● Access limitation
The magnet drive pump has a pair of strong magnets (the magnet capsule
unit and drive magnet). The strong magnet field could adversely affect the
persons who are assisted by electronic devices such as the pacemaker.
● Turn off power before work
Be sure to turn off power to stop the pump and related devices before work.
Make sure no one turns on power by mistake while working on the pump,
otherwise it may result in a serious accident. If your working area is noisy or
dark, let other people know about the situation by displaying a notice such
as "POWER OFF (Maintenance)" near a power switch.
● Wear protective clothing
Always wear protective clothing such as an eye protection, chemical resist-
ant gloves, a mask and a face shield during disassembly, assembly or main-
tenance work.
● Use the eye bolt or lifting holes
Use the eye bolt when lifting the pump unit only or use lifting holes on the
base if the pump unit is mounted on it. In the latter case, do not use the eye
bolt. Use an overhead crane or any other proper transporting machine. Two
or more operators may be needed for ensuring safe transport depending on
the pump size and weight.
● Do not modify the pump
Alterations to the pump carries a high degree of risk. It is not the manufactur-
er’s responsibility for any failure or injury resulting from alterations to the pump.
● When handling harmful liquid
When a harmful liquid as mentioned below is used, be sure to conduct daily
inspection and maintenance for the prevention of liquid/gas leakage.
1. Explosive or flammable liquid
2. Corrosive chemicals
3. Harmful liquid or gas
● Ventilation
Fumes or vapours can be hazardous with certain solutions. Ensure proper
ventilation at the operation site.
Turning off power
WARNING
Wear
protectors
Prohibition
Do not remodel

- 3 -
Safety Section
CAUTION
● Do not catch the finger
Magnetic force of the pump is powerful. Take care not to catch the finger in
the bracket. Observe the instructions on the later pages for disassembly and
assembly.
● Do not run pump dry
Do not run pump dry (operation without priming water or with a suction valve
closed). Internal parts are excessively worn by friction heat and fatal pump
damage results.
● Qualified personnel only
The pump should be handled or operated by qualified personnel with a full
understanding of the pump. Any person not familiar with the product should
not take part in the operation or management of the pump.
● Do not use the pump/motor in any condition other than its intended purpose
The use of the pump/motor in any conditions other than those clearly specied
may result in failure or injury. Use this product in specied conditions only.
● Static electricity
When low electric conductivity liquids such as ultra-pure water and fluor inac-
tive liquid (e.g. FluorinertTM) are handled, static electricity may generate in
the pump and may cause static discharge. Take countermeasures to remove
static electricity.
● Commissioning
Friction heat builds up and damages the internal parts. Break in the pump to
expel gas from the pump and piping, especially when handling liquids that
generate gas bubbles (sodium hypochlorite or hydrogen peroxide).
●Spill precautions
Ensure protection and containment of solution in the event of plumbing or
pump damage (secondary containment).
●Disposal of a used pump
Remove a chemical and ush it out before the pump is disconnected from
piping. Dispose of any used or damaged pump in accordance with local rules
and regulations. If necessary, consult a licensed industrial waste disposal
company.
Prohibition
Prohibition

- 4 -
1. Unpacking and inspection ........................5
2. Model code ..................................................6
3. Conditions to be used ...............................7
4. Structure and names of parts..................8
OUTLINE OF PRODUCT

- 5 -
After unpacking of the pump, check the following
points.
(1) If the product is ordered one.
Check model code, discharge capacity, discharge
pressure, voltage which are written on nameplate
of pump and motor to see if they conform to your
order.
(2) If the product is not damaged or bolts are not loos-
ened during transportation. Tighten especially the
bolts which are holding a rear casing support to
the specific tightening torque subsequent to the
first tightening. Refer to the "13. Disassembling &
assembling" for the specific torque value.
(3) If accessories are attached.
Standard accessories:
Bolts for back pull-out M12 × 90: 2pcs
Optional accessories if ordered.
1. Unpacking and inspection
Eye bolt
Motor nameplate
Bracket
Pump nameplate
Baseplate
Suction port
Discharge port
*The CE marking on our product(s) is for us to market
the product(s) into the European market, however, the
CE marking does not ensure any safety or conformity
of the product(s) outside the European market.
When the pump is incorporated into the equipment
marketed in the European market, such equipment
must meet all the requirements of applicable directives.
In such a case, any person who places the equipment
on the market must carry a CE mark on the equipment
as a manufacturer.

- 6 -
MDM 80-50-160 P KK C 075 I - D 2 H
Pump sizes Suction Discharge Nominal impeller diameter
50 × 32 160/200
65 × 40 160
80 × 50 160
Casing material P: PFA
Bearing/spindle material KK: SiC/SiC
Type of motor to be mounted C: Foot mounted motor type
Motor output
022: 2.2 kW, 040: 4.0 kW, 055: 5.5 kW,
075: 7.5 kW, 110: 11 kW, 150: 15kW
Standard for connection flange/motor
I: ISO pump flange + IEC motor
Drain/special version
2. Model code
Baseplate Standard or Special version
A
With baseplate
Standard
S
D
XSpecial version
B
Without baseplate
Standard
Y
E
Z
Drain
Without drain Special version
With drain Standard
Without drain Special version
With drain Standard
Special version
Note: For PFA material type, air vent is always equipped for "with drain" type.
Motor pole 2 : 2 pole motor
4 : 4 pole motor
High temperature type: No code : Standard
H : High temperature type (80 to 120 deg.C)
T : High temperature type (120 to 150 deg.C)
Note: See the nameplate for the actual impeller outer diameter.

- 7 -
1. Permissible pressure
Permissible pressure of the pump is 1.6 MPa. Pay attention so that the pump discharge pressure does not exceed this
figure.
2. Slurry containing liquid
Basically slurry containing liquid can not be handled but SiC bearing type (KK type) can handle it in the following
conditions:
• Slurry concentration up to 5 wt%
• Slurry hardness up to 80 Hs
• Slurry size up to 50 µm
3. Performance change caused by specific gravity and viscosity of liquid
When specific gravity and viscosity are larger than water, shaft power, discharge capacity and discharge head will
change depending on specific gravity and viscosity of pumped liquid. The pump was made and shipped according
to the information given to IWAKI. If the liquid condition is changed, ask and confirm IWAKI to use the pump
without problem.
4. Influence by liquid temperature
The chemical liquid changes its viscosity, vapour pressure and corrosively according to the temperature change.
Pay attention to the change of liquid characteristics.
3. Conditions to be used
Note: For liquid temperature below zero deg. C and above 120 deg. C, please contact IWAKI because
detailed operating condition must be considered for these temperature ranges.
Ambient temperature range: 0 - 40 deg. C
Ambient humidity range: 35 - 85% RH
Liquid temperature range
-20 0 80 120 150
Pumped liquid
temperature (deg. C)
PFA material (All models) H type T type

- 8 -
4. Structure and names of parts
Note 1: Q'ty in parentheses (10) is for MDM50-32-200 & MDM80-50-160.
2: H type and T type have different structure in a part of the component parts. Refer to the dimension
of H type and T type for further information.
NO. Parts name Q'ty NO. Parts name Q'ty
500.3 Plain washer 2
551 Wave washer 1
5 5 4.1 Spring washer 2
554.3 Spring washer 2
554.4 Spring washer
554.5 Spring washer 4
554.6 Spring washer 4
321.2 Ball bearing 1
330 Bracket 1
350 Bearing housing 1
360 Bearing cover 1
40 0.1 Gasket, casing 1
400.2 Gasket, drain 1
400.3 Gasket, air vent 1
8(10)
420 350
901.6 903.2 940.1 908.1
159 158 900
901.5
858 161 400.1 942 230
100.1
122.2
901.3
400.3
314.2
314.1
210
122.1
901.1
400.2
310
859
330
314.4314.3
360
321.1 213
554.5
554.6
554.3 500.3
554.1 500.1
901.8
321.2
551
554.8
901.4
554.4
183
100.1 Front casing 1
12 2.1 Drain plate 1
122.2 Air vent plate 1
158 Rear casing 1
159 Rear casing cover 1
161 Rear casing support 1
183 Support 1
210 Spindle 1
213 Drive shaft 1
230 Impeller 1
310 Bearing 1
314.1 Liner ring 1
314.2 Mouth ring 1
314.3 Rear thrust ring 1
314.4 Rear ring 1
321.1 Ball bearing 1
554.8 Spring washer 2
858 Drive magnet unit 1
859 Magnet capsule unit 1
900 Eye bolt 1
9 01.1 Hex. head bolt 2
901.3 Hex. head bolt 2
901.4 Hex. head bolt 8(10)
901.5 Hex. head bolt 4
901.6 Hex. head bolt 4
901.8 Hex. head bolt 2
903.2 Hex. soch head bolt 6
9 0 8.1 Hex. soch set screw 2
940.1 Key 1
942 Pin impeller 2
420 Shaft seal 1
50 0.1 Plain washer 2