IWAKI AMERICA MD-15RT, MD-15R, WMD-15R, WMD-15RT, MD-20RT Instruction Manual

IWAKI AMERICA

MAGNETIC DRIVE PUMP

MD/WMD SERIES

Thank you for having selected an Iwaki America MD/WMD Series magnetic drive pump. This

instruction manual deals with the correct handling, maintenance, inspection and troubleshooting

optimum performance, safety and long service of your pump.

procedures for the MD/WMD magnetic drive pump. Please read through it carefully to ensure the

Contents

1 SAFETY INSTRUCTION ................................................................................................................. 1

2 UNPACKING AND INSPECTION ................................................................................................... 3

3 OPERATING PRINCIPLE ................................................................................................................ 3

4 MODEL IDENTIFICATION GUIDE ................................................................................................ 4

5 SPECIFICATIONS ............................................................................................................................ 5

Construction/Materials ....................................................................................................................... 6

6 HANDLING INSTRUCTIONS ......................................................................................................... 7

7 INSTALLATION, PIPING, AND WIRING ...................................................................................... 8

7.1 Installation ............................................................................................................................... 8

7.2 Piping instructions .................................................................................................................. 9

7.3 Wiring ...................................................................................................................................... 9

8 ASSEMBLY ................................................................................................................................... 11

9 OPERATION ................................................................................................................................... 12

10 MAINTENANCE/INSPECTION AND CONSUMABLE PARTS ............................................... 14

11 PARTS DESCRIPTION AND EXPLODED VIEW ...................................................................... 14

12 DIMENSIONS ................................................................................................................................ 15

13 TROUBLESHOOTING .................................................................................................................. 16

P/N 180243 Rev. E Aug 2012

1

1 SAFETY INSTRUCTIONS

Turn off the power supply

Working without disconnecting the power supply may cause an electrical shock. Before performing
any assembly or maintenance procedures involving the pump, make sure to turn the power supply
switch off and to stop the pump and other related devices.

Terminate operation

When you detect any signs of abnormal operation, terminate pump operation immediately.

For specified application only

The use of a pump in any applications other than those clearly specified may result in injury or damage
to the pump. Use the pump strictly in accordance with the pump specifications and application
capabilities.

Modification

Never modify the pump. Iwaki America will not be responsible for any accident or damage of any kind
caused by the user remodeling the pump without first obtaining permission or instructions from Iwaki
America.

Protective clothing

If application involves the handling of hazardous liquids, protective gear (gloves, glasses, clothing, etc)
must be worn before performing any maintenance on the pump. Please follow safety guidelines
established for such applications.

Operation

Operation of the pump and related system must be by experienced or knowledgeable personal. The
pump operator or pump operation supervisor must not allow any personal who have little or no
knowledge of the pump to operate the unit.

Power

Do not operate the pump at a different voltage than specified on the nameplate. This may result in
damage to the unit or fire. Only the specified voltage must be used.

Do not submerge

If the motor or power cable becomes wet or damp fire or electric shock may occur. The unit should be
installed in such a manner to prevent contact with fluids or in a wet environment. Follow all local,
state and government regulations for the installation and wiring of the pump.

Spill accident

Protective measures should be taken against any accidental spill or leakage of any hazardous liquids as
a result of unexpected damage to the pump or the related piping. Please follow safety guidelines
established for such occurrences.

Operating site must be free of water and humidity

The pump is not designed to be water-proof or dust-proof. The use of the pump in places with
splashing water or humidity above 90% may result in an electrical shock or short circuit.

2

Do not damage power cord

Do not cut, abrade or forcibly pull the power cord. Excessive heat or heavy load applied to the cable
may damage the cable and finally result in a fire or an electrical shock.

Do not cover the motor

Covering the motor during operation may result in an accumulation heat inside the motor and cause a
fire or a mechanical failure. Proper ventilation is necessary for the motor.

Grounding

Do not operate the pump without proper grounding; otherwise an electrical shock may result. Follow
all local, state and government regulations for the installation and wiring of the pump.

Power cord cannot be replaced

Never use a damaged power cable; otherwise, a fire or an electrical shock may result. Handle the power
cord carefully, as it cannot to be replaced by a new cable. (The complete motor must be replaced if
damaged).

Location and storage

Do not install or store the pump in the following places:

* Places where a flammable gas or material is used or stored.
* Places where the ambient temperature is extremely high (104°F or higher) or extremely low

(32°F or lower).

Static Electricity Hazard

When low electric conductivity liquid such as ultra-pure water is handled, static electricity may be
generated in the pump, which may cause static discharge and damage the pump. Take appropriate
countermeasures to avoid and remove any potential static electricity.

3

Open the package and check that the product
conforms to your order. Also, check each of the
following points. For any problem or
inconsistency, contact your distributor at once.

1. Check that the model number indicated on the
nameplate conforms to the specifications of
your order.

2. Check that all the accessories you ordered are
included.

3. Check that the pump body and parts have not
been accidentally damaged or that any bolts
have not been loosened in transit.

IWAKI
MAG DRIVE PUMP

MODEL
MAX. CAPACITY GAL/MIN
MAX.HEAD FT.
VOLTAGE AMPS
SERIAL NO.

IWAKI AMERICA

5 BOYNTON ROAD HOPPING BROOK PARK

HOLLISTON, MA 01746 USA

TEL: [phone] www.iwakiamerica.com

Drive Magnet

Impeller

Spindle

Driven Magnet

Discharge

Suction

2 UNPACKING AND INSPECTION

3 OPERATING PRINCIPLE

A sealless magnet drive pump uses magnet torque to transmit energy from the motor to the impeller. A
magnet coupling is formed using an inner, or driven magnet, attached to the impeller and an outer, or
drive magnet, attached to the motor shaft. This design eliminates mechanical shaft seals or packing,
since there is no direct connection between the motor shaft and the impeller. The front and rear
casings, sealed with a static o-ring, form the pump or liquid end. The magnetic field is transmitted
from the drive magnet through the rear casing to the driven magnet that is attached to the impeller. The
combined coupling torque of the drive magnet and impeller magnet provides the driving power to the

fluid being pumped.

4

L

-

WMD/MD

115

NL

20

R

X(Z)

T

-

4 MODEL IDENTIFICATION GUIDE

1 2 3 4 5 6 7 8

1. Series name (WMD specifies US motor design)

2. Pump Size (6, 10, 15, 20, 30, 55, 70, 100)

3. R = Rotating Spindle (omit for MD-6 and MD-10)

4. L = UL Listed Motor, included in 6, 10, 55, 70, 100 115V model

(also on older 15/20/30/40 models)

5. Pump type
Blank: Standard Impeller
Z: High Head Impeller
X: High Flow Impeller

6. Suction/Discharge Port Connections

Blank: Hose Connection
T: Threaded Connection

7. Power source voltage:

115: 115V (50.60Hz) 230: 230V (50/60Hz)
220: 220/240V(50/60Hz)

8. NL = UL Listed 115V Motor (applies to 15, 20, 30, 40 sizes)