IWAKI MDM 50 User manual

IWAKI Magnetic Drive Pump
MDM Series (Asia Edition)
Instruction Manual
Read this manual before use of product

Thank you for selecting IWAKI Magnetic Drive Pump MDM Series. This instruction man-
ual, which is divided into five sections, namely "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 opera-
tion 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 (Starting) ........................................................................................ 16
11. Pump stopping ........................................................................ 16
MAINTENANCE ............................................................................................. 17
12. Trouble shooting...................................................................... 18
13. Maintenance & inspection .......................................................20
14. Disassembling & assembling................................................... 21
15. Repair parts list .......................................................................27
16. Mass of pump ......................................................................... 42

- 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 instruc-
tions 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.
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.

- 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 dangerous liquid
For the transfer of the harmful liquid as mentioned below, 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
Prohibited
Wear protective
gear
No Remodeling
WARNING

- 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 liquid). Friction heart builds up during
dry running operation and damages internal parts. If the pump is operated
with a suction side valve closed or without priming, the pump runs dry.
*The pumps with the carbon bearing (CF type) can run dry up to 1 hour without damaging internal
sliding parts (see page 15 as well).
● 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 pip-
ing. Dispose of any used or damaged pump in accordance with local rules and
regulations. If necessary, consult a licensed industrial waste disposal company.
Prohibited
Prohibited

- 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 & assem-
bling" for the specific torque value.
(3) If accessories are attached.
Standard accessories:
Bolts for back pull-out M12 × 100: 2pcs
(M10 × 50 : 2pcs for MDM25-1)
Optional accessories if ordered
1. Unpacking and inspection
Eye bolt
Motor nameplate
Foot support
Pump nameplate
Baseplate
Suction port
Discharge port

- 6 -
MDM40 - 150 1 E KK F 075 J - D 2 H
1 2 3 4 5 6 7 8 9 10 11
1 Pump discharge bore Suction Discharge
25: 40 × 25
40: 50 × 40
50: 65 × 50
65: 80 × 65
2 Nominal impeller diameter: 100 - 225 (mm)
3 Impeller range: 1: Low head impeller type 2: High head impeller type (Available for MDM25 and MDM40)
3: High head impeller type (Available for MDM25 only)
4 Main material: E: CFRETFE P: PFA N: PFA (MDM25-2 and MDM40-1)
Note) Pumps with the "P" and "N" codes have PFA main materials, but then casing design is different from each other.
See the section 15. Spare parts list for detail.
5 Bearing/spindle material: KK:SiC/SiC CF:High density carbon/High purity ceramic
6 Type of motor to be mounted: F : Flange mounted motor type
7 Motor output: 004 : 0.4 kW, 007 : 0.75 kW, 015 : 1.5 kW, 022 : 2.2 kW,
037 : 3.7 kW, 055 : 5.5 kW, 075 : 7.5 kW, 110 : 11 kW, 150 : 15 kW, (185 : 18.5 kW)
8 Standard for connection flange/motor
J : JIS pump flange + JIS motor I : ISO pump flange + IEC motor A : ANSI pump flange + JIS motor
9 Drain/special version
2. Model code
Note: For the pumps with the main material code of "P", an air vent is always equipped for "with drain" type.
10 Motor pole : 2 : 2 pole motor
4 : 4 pole motor
11 High temperature type
No code : Standard
H : High temperature type
(Available for MDM25-3 and MDM40-2)
Note) In this manual, model code is simplified by using pump discharge bore code (1) and impeller range code (3). For
example, when you see MDM25-1, MDM25-2, MDM25-3, MDM40-2, the figures 25 or 40 are pump discharge
bore and 1, 2 or 3 are impeller range.
Baseplate Standard or Special version
A
With baseplate
Standard
S
D
X Special 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

- 7 -
1. Maximum operating pressure
Maximum operating pressure of the pump is 1 MPa (1.6 MPa for MDM25-3 and MDM40-2). 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, vapor pressure and corrosivity according to the temperature change. Pay
attention to the change of liquid characteristics.
3. Conditions to be used
Note 1) The code "E", "P" and "N" represents main materials.
2) For temperature range of each chemical liquid, refer to Chemical Resistant Table on booklet "Technical
Information on MDM Series".
3) 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 0 100 150
Pumped liquid
temperature (deg. C)
E (all models)
P (MDM25-1/ 25-2/ 40-1/ 50-1/ 65-1)
P (MDM25-3/ 40-2)
12080
N (MDM25-2/ 40-1)

- 8 -
4. Structure and names of parts
Note (1): Q'ty in parenthesis (6) is for MDM25-1 and (10) is for MDM25-3 & MDM40-2.
(2): For high temperature type "H" of MDM25-3 & MDM40-2.
(3): For pumps with the main material codes of "E" (all models), "P" (MDM25-1) and "N" (MDM25-2/40-1).
NO. Parts name Q'ty NO. Parts name Q'ty
100.1 Front casing 1554.1 Spring washer 2
100.2 Cover 1554.2 Spring washer 2
122.1 Drain plate 1554.3 Spring washer 2
122.2 Air vent plate 1554.4 Spring washer 8 (6) or (10) Note (1)
158 Rear casing 1554.5 Spring washer 4
159 Rear casing cover 1554.6 Spring washer 4
159.1 Reinforce pipe Note (2) 1554.7 Spring washer 2
161 Rear casing support 1801 Motor 1
210 Spindle 1858 Drive magnet unit 1
230 Impeller 1859 Magnet capsule unit 1
310 Bearing 1890 Base plate 1
314.1 Liner ling 1900 Eye bolt 1
314.2 Mouth ring 1901.1 Hex. head bolt 2
314.3 Rear thrust 1901.2 Hex. head bolt 2
314.4 Rear ring 1901.3 Hex. head bolt 2
330 Bracket 1901.4 Hex. head bolt 8 (6) or (10) Note (1)
400.1 Gasket 1901.5 Hex. head bolt 4
400.2 Drain gasket 1901.6 Hex. head bolt 4
400.3 Air vent gasket 1901.7 Hex. head bolt 2
500.1 Plain washer 2903.1 Hex. head bolt Note (3) 5
500.2 Plain washer 2908.1 Hex. socket head bolt 2
500.3 Plain washer 2942 Impeller pin 2
500.3
554.3
901.3
400.3
122.2
901.1
554.1
400.2
500.1
122.1
500.2
554.2
554.4
901.7
554.5 554.6
901.2
903.1
901.4
890
554.7
901.6
330159.1
908.1
314.3
314.4
858
161
859
310
210
801
900
159158
901.5
400.1
942
314.1
314.2
100.1100.2 230