IWAKI EK Series User manual

Read this manual before use of product
IWAKI
Electromagnetic Metering Pump
EK Series
Instruction Manual

Contents
IMPORTANT INSTRUCTION ....................................................... 1
Safety Instructions ........................................................................ 2
Outline........................................................................................ 5
1. Unpacking & Inspection ............................ 6
2.OperationPrinciple
................................... 6
3. Identification Codes
.................................. 7
4.Features
................................................... 8
5.MainParts
................................................ 8
6.Specifications
........................................... 9
7.OperatingFunction
.................................. 11
8.STOPFunction
....................................... 11
Installation .................................................................................. 12
1. Before Use
.............................................. 13
2.NotesonOperation................................. 13
3. Installation
.............................................. 14
4.Dimensions
............................................. 15
5. Piping
..................................................... 18
6.ElectricalWiring
...................................... 19
Operation ................................................................................... 21
1. Bleeding
.................................................. 22
2. Flow rate Adjustment .............................. 24
3.Operation
................................................ 25
4. Waterproof cover Mounting
..................... 29
Maintenance ............................................................................... 30
1. Troubleshooting
...................................... 31
2. Maintenance & Inspection ....................... 32
3. Wear Parts
............................................. 33
4. Disassembly & Assembly ........................ 34
5. Exploded View ........................................ 38
6. Accessories
............................................ 42
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 EK 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
“Caution” section could lead to a personal injury or
damage to the product.
For the Safe and
Correct Handling of the pump
●"Safety Instruction" section deals with important details about handling of the product. Before
the use of the 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 dangerous situations.
●The symbols on this instruction manual have the following meanings:
WARNING
Nonobservance or misapplication of the contents of
“Warning” section could lead to a serious accident
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
CAUTION
●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 during
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.
●Do not submerge
The pump is not a submergible pump. Do not submerge the pump in the water or liq-
uid.
●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.
●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 operators
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.
●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 dam-
age the inside of the pump.
No Remodeling
Prohibited
Electrical Shock
Prohibited
Prohibited
Prohibited
Prohibited
Wear protective
gear
Safety instructions

- 3 -
CAUTION
●Ventilate
Poisoning may result during an operation which involves toxic or odorous liquid.
Ventilate the operating site sufficiently.
●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 electri-
cal shock may result. Make sure the grounding wire is connected with the grounding
terminal.
●Install an earth leakage breaker (option)
The operation of a pump without using an earth leakage breaker may cause an electri-
cal shock. Please purchase an optional leakage breaker and install 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.
●Follow the instruction manual
Replace the consumable parts by following the descriptions in the instruction manual.
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 (50°C or higher) or extreme-
ly low (0°C or lower).
* Locations which receive direct sunlight.
* Locations subject to high temperatures and high humidity.
●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.)
Prohibited
Electrical Shock
Prohibited
Electrical Shock
Caution
Grounding
Caution
Safety instructions

- 4 -
CAUTION
●Waterproof cover mounting
The waterproof property of IP67 is maintained as long as the waterproof cover is prop-
erly mounted. The waterproof cover has the direction for mounting. Do not mount it
upside down. The cover must be fixed securely with six thumb bolts.
If the pump is used without the waterproof cover or with the cover wrongly mounted,
the waterproof property of IP67 is not maintained resulting in pump failure. Water tight-
ness is not maintained either when the six bolts are not tightened securely.
●Frequent ON and OFF of pump must be done by STOP function (ON and OFF to
STOP terminal). If you are forced to stop and start pump by turning on and off
of power source, turning on and off must be limited to less than six times an
hour.
●Do not make key operation with wet hand
If the control panel gets wet and liquid enters the controller, the pump may malfunction.
Wipe the control panel immediately if it gets wet.
Safety instructions

- 5 -
1.Unpacking & Inspection ........................ 6
2.Operation Principle .............................. 6
3.Identification Codes ............................. 7
4.Features................................................ 8
5.Main Parts............................................ 8
6.Specifications ....................................... 9
7.Operating Function.............................. 11
8.STOP Function................................... 11
Outline

- 6 -
1. Unpacking & Inspection
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?
NOTE: The pump is not designed for
submergible use. Do not sub-
merge the pump in the water or
liquid.
Outline
2. Operation Principle
Bleed valve
Discharge port
Suction port
Diaphragm
Pump head
Electromagnet
driving unit
Pump shaft
Stroke length
adjusting dial
Control unit
Waterproof cover
Thumb bolt
With bleed valve
A pump shaft put in the electromagnet driving unit makes reciprocating movement which is brought by pulse
current from controller. This reciprocating movement is transferred to the diaphragm which open and close
by turns the discharge and suction valves to discharge the liquid. The speed of reciprocating movement
(stroke rate per minute) can be changed by changing the pulse frequency of controller. The length of recip-
rocating movement (stroke length) can be adjusted by stroke length adjusting dial to adjust the discharge
capacity per stroke. These two adjustments of stroke length and stroke speed enable fine adjustment of
flow rate.

- 7 -
Outline
3. Identification Codes
(Example)
EK - B 11 PC - 20E P R 2 -
(1) (2) (3) (4) (5) (6) (7) (8) (9)
(1) Pump Series
(2) Drive unit : B Average power consumption 20W
C Average power consumption 22W
(3) Diaphragm diameter (Nominal mm)
11: 10mm, 16: 15mm, 21: 20mm, 31: 30mm, 36: 35mm
(4) Wet-end material
1. PTFE is coated on EPDM for the material of diaphragm.
2. Material symbol PVC : Transparent hard polyvinyl chloride
GFRPP : Glass fiber reinforced polypropylene
CE : Alumina ceramic
HC : Hastelloy C 276
EPDM : Ethylene propylene diene methylene
FKM : Fluoroelastomer
PTFE : Polytetrafluoroethylene
PCTFE : Polychlorotetrafluoroethylene
(5) Power source
100 : AC100V/110V/115V 50/60Hz
20E: AC220V/230V/240V 50/60Hz
(6) Power cord
(7) Controller type R : R type
(8) Connection hose
(9) Special version code
Symbol Cord end
Press-fit terminal
With plug
No symbol
P
Symbol Hose diameter (mm)
4 × 9
4 × 6
6 × 8
8 × 13
9 × 12
Rc1/4” (Female)
1
2
3
4
5
10 × 126
9
Parts Diaphragm type
VC
PVC GFRPP
PTFE PTFE
PTFE PTFE
VH PC PH SH
SUS316
HC
SUS316
PTFE
–
PTFE
TC
PVDF
CE
FKM
PTFE
FKM
PTFE
CE HC CE HC
FKM EPDM FKM EPDM
FKM EPDM FKM EPDM
Pump head
Valve
Valve seat
Valve gasket
O ring
Diaphragm

- 8 -
4. Features
1) EK Series pump is a totally enclosed and water-proof construction (IP67 certified) type electromagnetic
metering pump. The waterproof property of IP67 is maintained as long as the waterproof cover is prop-
erly mounted.
2) The pump is water-proof construction and can be installed outdoor. Electronics parts and print circuit
board are moulded by plastic resin to avoid the deterioration by humidity.
3) Many kinds of control can be done easily because of CPU built-in controller. Touch key operation ena-
bles easy setting of stroke rate.
Automatic control by external pulse signal.
Pump can be stopped by external contact signal.
4) The waterproof cover prevents liquid from entering the controller.
5. Main Parts
Discharge
port
Suction
port
Air vent port
Nameplate
Pump head
Control panel
Driving unit
50
70
60
90
100%
80
40
30
20
0
STOP
ON
STROKE RATE
STROKE LENGTH
IWAKI
360
Power cord
Stroke length
adjusting dial
Control panel
Base
Waterproof cover
Thumb bolt
Lock nut for external
signal terminal
Outline