IWAKI EW Series User manual

Read this instruction manual before use of product
IWAKI
Electromagnetic Metering Pump
EW Series
Instruction Manual
T412-9 '07/10
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: IWAKI EUROPE GmbH
: IWAKI Italia S.R.L.
: IWAKI Nordic A/S
: IWAKI Sverige AB
: IWAKI Suomi Oy
: IWAKI Norge AS
: IWAKI France S.A.
: IWAKI PUMPS (UK) LTD.
: IWAKI (Schweiz) AG
: IWAKI (Austria) GmbH
: IWAKI Holland B.V.
: IWAKI Iberica Pumps, S.A.
: IWAKI Belgium n.v.
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FAX : 1367 2030
: IWAKI America Incorporated
: IWAKI Pumps Australia Pty. Ltd.
: IWAKI Singapore Pte. Ltd.
: IWAKI Singapore (Indonesia Branch)
: IWAKIm Sdn. Bhd.
: IWAKI Pumps Taiwan Co., Ltd.
: IWAKI (Thailand) Co.,Ltd.
: IWAKI Pumps Co., Ltd.
: IWAKI Pumps (Guandong) Co., Ltd.
: GFTZ IWAKI Engineering & Trading (Guangzhou)
: IWAKI Pumps Co., Ltd. (Beijing)
: IWAKI Pumps (Shanghai) Co., Ltd.
: IWAKI Chemical Pumps Philippines, Inc.
: IWAKI Korea Co.,Ltd.
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IWAKI CO.,LTD. 6-6 Kanda-Sudacho 2-chome Chiyoda-ku Tokyo 101-8558 Japan
TEL:[phone] FAX:[phone](http://www.iwakipumps.jp)

Contents
IMPORTANT INSTRUCTION ........................................................ 1
Safety Instructions ......................................................................... 2
Outline ........................................................................................... 5
1. Unpacking & Inspection ............................ 6
2. Operation Principle ................................... 6
3. Identification Codes .................................. 7
4. Specifications ........................................... 8
5. External Dimensions .............................. 11
6. Main Parts & Label ................................. 15
Installation .................................................................................... 16
1. Before Use ............................................. 17
2. Notes on Operation ................................ 17
3. Installation, Piping, & Wiring ................... 20
Operation ..................................................................................... 26
1. Bleeding ................................................. 27
2. Flow rate Adjustment .............................. 29
3. Operation ............................................... 31
Maintenance ................................................................................ 35
1. Causes of Trouble &
Troubleshooting ...................................... 36
2. Maintenance & Inspection ...................... 37
3. Disassembly & Reassembly ................... 38
4. Accessories ............................................ 42
5. Names of Parts & Structure ................... 43
This instruction manual should be kept on hand by the end user for quick reference. It is
recommended that each user, after reading the instruction manual thoroughly, place it in a
position close to the pump system and where it may be easily accessed by any user at any
time whenever necessary.
Thank you for selecting the electromagnetic metering pump EW series. This instruction
manual deals with “Safety Section” “Product outline” “Installation Section” “Operation
Section” and “Maintenance Section”.
Please read through this manual carefully to ensure the optimum performance, safety and
service of the EK series.

- 1 -
Nonobservance or misapplication of the contents
of the “Caution” section could lead to the personal
injury to users or serious damage to the product.
For the Safe and
Correct Handling of the Pump
● "Safety Instruction" section mentions important details about the handling of the product. Before
the use of pump, read this section carefully for the prevention of personnel injury or loss.
● Observe the instructions accompanied with "WARNING" or "CAUTION" in this manual. These
instructions are very important for protecting pump users from the dangerous situations.
● The symbols on this instruction manual have the following meanings:
WARNING
Nonobservance or misapplication of the contents of
the “Warning” section could lead to a serious acci-
dent which may result in death.
CAUTION
Types of Symbols
Indicates that “Warning” or “Caution” must be exercised. Inside this triangle, a con-
crete and practical image provided as a warning or caution message is depicted.
Indicates a prohibited action or procedure. Inside or near this circle, a concrete and
practical image of the activity to be avoided is depicted.
Indicates an important action or procedure which must be performed or carried out
without fail. Failure to follow the instructions herein can lead to malfunction or
damage to the pump.
Important Instructions

- 2 -
WARNING
• Turn off the power supply
Working without disconnecting the power supply may cause an electrical shock.
Before engaging upon any working 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 or become aware of a dangerous sign or abnormal condition dur-
ing operation, terminate the operation immediately and start it from the beginning
again.
• For specified application only
The use of a pump in any application 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 range.
• No remodeling
Never remodel a pump. Otherwise, a serious accident may result. Iwaki will not be
responsible for any accident or damage of any kind which is caused by the user
remodeling the pump without first obtaining permission or instructions from Iwaki.
• Wear protectors
If you touch or come in contact with any type of hazardous chemical liquid, including
but not limited to chemicals, you may experience a serious injury. Wear protective
gear (protective mask, gloves, etc.) during the pump operation.
• 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 where water splashes or humidity is high may result in an electrical shock or
short circuit.
CAUTION
• Qualified operators only
The pump operator and pump operation supervisor must not allow any operators
who have little or no knowledge of the pump to run operate the pump. Pump opera-
tors must have a sound knowledge of the pump and its operation.
• Specified power only
Do not operate the pump on voltage which is not specified on the nameplate.
Failure to do so may result in damage or fire. Only the specified power level is to be
applied.
Wear protective
gear
Electrical Shock
Prohibited
Prohibited
No Remodeling
Prohibited
Prohibited
Safety Instructions

- 3 -
CAUTION
• Do not run the pump dry
Do not run the pump dry (without liquid inside the pump). Heat generated as a result
of abrasion between elements inside the pump during operation without liquid may
damage the inside of the pump.
• Do not wet or dampen
If an electric part or wiring gets wet with the liquid spilled over accidentally, a fire or
electrical shock may be caused. Install the system in a place free from liquid spill-
age or leakage.
• Ventilate
Poisoning may result during an operation which involves toxic or odorous liquid.
Ventilate the operating site sufficiently.
• Spill-out accident
Protective measures should be taken against any accidental spill-out or leakage of
the operating liquid as a result of unexpected damage on the pump or the related
piping.
• Damaged pump
Never operate a damaged pump. A damaged pump may cause leakage or electrical
shock.
• Do not damage power cable
Do not scratch, damage, process, or pull the power cable forcibly. An extra load
onto the cable, such as heating the cable or placing something heavy on the cable,
may damage the cable and finally cause a fire or an electrical shock.
• Arrange grounding
Do not operate the pump without connecting the grounding wire. Otherwise, an
electrical shock may result. Make sure the grounding wire is connected with the
grounding terminal.
• Install an earth leakage breaker
The operation of a pump without using an earth leakage breaker may cause an
electrical shock. Please install an optional leakage breaker in the system.
• Handling of power cable
Use of a defective or damaged power cable may result in a fire or electrical shock.
Handle the power cable carefully.
Electrical Shock
Electrical Shock
Prohibited
Prohibited
Caution
Caution
Caution
Do not wet
or dampen
Grounding
Safety Instructions

- 4 -
CAUTION
• Follow the instruction manual
Replace the consumable parts by following the descriptions in the instruction manu-
al. Do not disassemble any part of the pump if the disassembling procedure for the
part in question is not included in the instruction manual.
• Limited operating site 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 (40°C or higher) or
extremely low (0°C or lower).
• Disposal of used pump
Disposal of used or damaged pumps must be done in accordance with the relevant
local laws and regulations. (Consult a licensed industrial waste products disposing
company.)
• Frequent stop and start of pump should be done by using STOP function (ON and
OFF of STOP terminal). If you can not use STOP function and are forced to oper-
ate pump by turning OFF and ON of power source, ON and OFF of power source
should be limited to six times an hour.
Prohibited
Safety Instructions

- 5 -
1.Unpacking & Inspection ....................... 6
2.Operation Principle .............................. 6
3.Identification Codes ............................. 7
4.Specifications ....................................... 8
5.External Dimensions .......................... 11
6.Main Parts & Label ............................ 15
Outline

- 6 -
After unpacking the pump, check the following
points to ascertain that the product is exactly
as you ordered. If you find anything wrong,
please get in touch with your dealer.
[1] Do the model, discharge pressure, voltage,
etc., shown on the nameplate represent
what you ordered?
[2] Has the pump been damaged in transit?
Are the bolts and nuts loose?
The Iwaki EW series electromagnetic
pump is a diaphragm metering pump of
the 'linear electromagnetic drive system',
which means electromagnetic force drives
the diaphragm directly. It consists of a
pump unit, a drive unit and a control unit.
Reciprocating movement is caused by the
electromagnetic force produced by the
pulse current sent from the control unit,
and the force of a spring. The reciprocating
movement is transmitted to the diaphragm
directly connected to a plunger, to change
the capacity of the pump chamber. The
changed capacity and the functioning of
the valves in the pump unit drive the pump.
Outline
1. Unpacking & Inspection
2. Operation Principle

- 7 -
3. Identification Codes
■ Pump Identification
EW - F 11 VC - 20E P F 2 -
Series code
Drive unit type
Diaphragm diameter
Wet end material
Material PVC : Transparent polyvinyl chloride
GFRPP: Glassfiber reinforced polypropylene
CE: Alumina Ceramic
HC: Hastelloy C 276
FKM: Fluoroelastomer
EPDM: Ethylene propylene diene methylene
PTFE: Polytetrafluoroethylene
Power source voltage
Code Pump head Valve Valve seat Diaphragm Gasket
VC PVC CE FKM
PTFE/EPDM PTFE
VH HC EPDM
PC GFRPP CE FKM
TC PVDF CE FKM
PH HC EPDM
SH SUS316 HC SUS316
Code Power source Frequency (Hz)
20E AC220/230/240V 50/60
31 30
36 35
35 3546 45
Code Effective diameter [mm]
11 10
16 15
21 20
Code Power consumption Stroke length
F 16 W 1.25 mm
G 24 W 1.5 mm
Outline

- 8 -
Controller code
F : F type controller
Connection hose
4. Specifications
■ Pump specifications
<VC, VH, PC, PH>
Code Cord end
Code Hose diameter
2ø4 × ø6
3ø6 × ø8
9 Rc1/4” (Female)
5ø9 × ø12
6ø10 × ø12
No code Crimp-style terminals
PWith plug
1 - 180EW-F11 1.5 ( 26) 0.142
EW-F16 2.5 ( 42) 0.233
EW-F21 3.6 ( 60) 0.333
EW-G31 9.9 (165) 0.917 0.6
EW-G46 24.0 (400) 2.200
Model
Max. discharge
capacity
L/H (ml/min)
Discharge
capacity/shot
ml
Max.
discharge
pressure
MPa
Stroke
rate
spm
Stroke
length
mm
1.0
1 - 1801.0
1 - 1800.7
1 - 180
1 - 180
0.2
EW-F31 9.0 (150) 0.833 0.3
1 - 180EW-G21 4.7 ( 78) 0.433 1.0
1 - 180
1.25
1.50
EW-G36 15.1 (252) 1.400 0.4
1 - 180
Power cord
Special version code
Outline