IWAKI PUMPS EJ-B Series User manual

2013 IWAKI CO., LTD.
Iwaki
Electromagnetic Metering Pump
EJ-B(R) (Europe)
Instruction manual
Thank you for choosing our product.
Please read through this instruction manual before use.
This instruction manual describes important precautions and
instructions for the product. Always keep it on hand for quick
reference.

2Order conrmation
Order conrmation
Open the package and check that the product conforms to your order. If
any problem or inconsistency is found, immediately contact your distribu-
tor.
a. Check if the delivery is correct.
Check the nameplate to see if the information such as model codes, dis-
charge capacity and discharge pressure are as ordered.
b. Check if the delivery is damaged or deformed.
Check for transit damage and loose bolts.

3
Contents
Contents
Order conrmation ............................................................................................. 2
Safety instructions ....................................................................... 6
Warning............................................................................................................. 7
Caution.............................................................................................................. 8
Prec aut ions fo r u se ........................................................................................10
Overview...................................................................................... 12
Introduction.....................................................................................................12
Pump structure & Operating principle .........................................................12
Features.......................................................................................................13
Operational functions ....................................................................................13
Manual mode...............................................................................................13
EXT mode....................................................................................................14
STOP func tio n .............................................................................................14
Part names.......................................................................................................15
Pump............................................................................................................15
Operational panel ........................................................................................16
Basic displays & Pump states ................................................................17
Identication codes........................................................................................18
Installation .................................................................................. 19
Pump mounting...............................................................................................19
Pipework ......................................................................................................... 20
Tube connection ......................................................................................... 20
Check valve mounting ................................................................................ 22
Wiring.............................................................................................................. 24
Power voltage/Earthing ...............................................................................24
Signal wire connection ............................................................................... 26
Input signal ............................................................................................ 27

4Contents
Operation..................................................................................... 28
Before operation ............................................................................................ 28
Points to be checked .................................................................................. 28
Retightening of pump head xing bolts ...................................................... 28
Use of hexagon wrench instead of a torque wrench ............................. 29
Degassing................................................................................................... 29
Flow rate adjustment .................................................................................. 32
Before a long period of stoppage (one month or more).............................. 34
Operation programming ............................................................................... 35
Programming ow....................................................................................... 35
Manual operation ........................................................................................ 36
EXT operation............................................................................................. 38
STOP function ............................................................................................ 39
Keypad lock ................................................................................................ 40
Keypad lock activation........................................................................... 40
Keypad lo ck relea s e .............................................................................. 40
Maintenance................................................................................ 41
Troubleshooting............................................................................................. 42
Inspection....................................................................................................... 43
Daily inspection .......................................................................................... 43
Periodic inspection ..................................................................................... 43
Wear part replacement.................................................................................. 44
Wear par t list............................................................................................... 44
Before rep lac e me nt .................................................................................... 45
Valve set replacement ................................................................................ 46
Discharge valve set dismantlement/assembly ...................................... 46
Suction valve set dismantlement/assembly .......................................... 48
Diaphragm replacement ............................................................................. 49

5
Contents
Exploded view................................................................................................ 52
Pump head & Drive unit...............................................................................52
Pump head ................................................................................................. 53
Specications/Outer dimensions ................................................................ 54
Specications ............................................................................................. 54
Pump unit .............................................................................................. 54
Control unit............................................................................................ 55
European power cable .......................................................................... 55
Australian power cable .......................................................................... 55
Pump colour .......................................................................................... 55
Outer dimensions........................................................................................ 56
EJ-B09/-B11/-B16/-B21 VC/VH............................................................. 56
EJ-B11/-B16/-B21 TC ............................................................................ 57
EC Declaration of Conformity..................................................................... 58

6Safety instructions
Read through this section before use. This section describes
important information for you to prevent personal injury or
property damage.
■ Symbols
In this instruction manual, the degree of risk caused by incorrect use is noted
with the following symbols. Please pay attention to the information associated
with the symbols.
Indicates mishandling could lead to a fatal or seri-
ous accident.
WARNING
A symbol accompanies each precaution, suggesting the use of "Caution", "Pro-
hibited actions" or specic "Requirements".
Indicates mishandling could lead to personal injury
or property damage.
CAUTION
Caution marks Prohibited mark Requirement mark
Electrical
shock
Caution
Requirement
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.
Prohibited Do not rework
or alter
Wear
protection
Grounding
Safety instructions

7
Safety instructions
WARNING
Turn off power before service
Risk of electrical shock. Be sure to turn off power to stop the pump
and related devices before service is performed.
Stop operation
If you notice any abnormal or dangerous conditions, suspend op-
eration immediately and inspect/solve problems.
Do not use the pump in any condition other than its intended purpose
The use of the pump in any conditions other than those clearly
specied may result in failure or injury. Use this product in specied
conditions only.
Do not modify the pump
Alterations to the pump carries a high degree of risk. It is not the
manufacturer's responsibility for any failure or injury resulting from
alterations to the pump.
Wear protective clothing
Always wear protective clothing such as an eye protection, chemi-
cal resistant gloves, a mask and a face shield during disassembly,
assembly or maintenance work. The specic solution will dictate the
degree of protection. Refer to MSDS precautions from the solution
supplier.
Do not damage the power cable
Do not pull, knot, or crush the power cable. Damage to the power
cable could lead to a re or electrical shock if cut or broken.
Do not operate the pump in a ammable atmosphere
Do not place explosive or ammable material near the pump.
WARNING
Requirement
Electrical
shock
Prohibited
Prohibited
Prohibited
Do not rework
or alter
Wear
protection

8CAUTION
CAUTION
Requirement
Caution
Caution
Prohibited
Prohibited
Prohibited
Requirement
Qualied personnel only
The pump should be handled or operated by qualied personnel with a
full understanding of the pump. Any person not familiar with the prod-
uct should not take part in the operation or maintenance of the pump.
Use specied power only
Do not apply power other than that specied on the nameplate. Other-
wise, failure or re may result. Ensure the pump is properly grounded.
Do not run pump dry
Do not run pump dry for more than 30 minutes (even when the
pump runs for degassing). Otherwise, the pump head xing screws
may loosen and liquid may leak. Optimise your system. If the pump
runs dry for a long period (for more than 30 minutes), the pump
head and the valve cases may deform by friction heat and conse-
quently leakage results.
Keep electric parts and wiring dry
Risk of re or electric shock. Install the pump where it can be kept dry.
Observe an applicable MSDS
Take account of installation environment. Chemicals should be
controlled in accordance with a MSDS. Do not send potable water
or circulate heated water with this pump.
Do not install /store the pump:
• In a ammable atmosphere or a dusty/humid environment.
• Where ambient temperature can exceed 0-40ºC.
• In direct sunlight or wind & rain.
Spill precautions
Ensure protection and containment of solution in the event of
plumbing or pump damage (secondary containment).

9
Safety instructions
CAUTION
Do not use the pump in a wet location
The pump is not waterproof. Use of the pump in wet or extremely
humid locations could lead to electric shock or short circuit.
Grounding
Risk of electrical shock! Always properly ground the pump. Con-
form to local electric codes.
Install a GFCI (earth leakage breaker)
An electrical failure of the pump may adversely affect other de-
vices on the same line. Purchase and install a GFCI (earth leakage
breaker) separately.
Preventative maintenance
Follow instructions in this manual for replacement of wear parts. Do
not disassemble the pump beyond the extent of the instructions.
Do not use a damaged pump
Use of a damaged pump could lead to an electric shock or death.
Disposal of a used pump
Dispose of any used or damaged pump in accordance with local
rules and regulations. If necessary, consult a licensed industrial
waste disposal company.
Check pump head bolts
Liquid may leak if any of the pump head bolts become loose.
Tighten the bolts diagonally and evenly by 2.16N•m before initial
operation and at regular intervals.
Solution compatibility
This pump has been evaluated for use with water only. The suitabil-
ity of this pump for use with liquids other than water, such as acid
and alkaline, is the responsibility of the user. For liquids other than
water, select the best-suited liquid end material combination using a
chemical compatibility chart.
Requirement
Caution
Requirement
Requirement
Electrical
shock
Prohibited
Grounding
Prohibited

10 Precautions for use
• Electrical work should be performed by a qualied electri-
cian. Otherwise, personal injury or property damage could
result.
• Do not install the pump:
–In a ammable atmosphere.
–In a dusty/humid place.
–In direct sunlight or wind & rain.
–Where ambient temperature can exceed 0-40ºC.
Protect the pump with a cover when installing it out of
doors.
• Select a level location, free from vibration, that won't hold
liquid. Anchor the pump with four M5 bolts so it doesn't
vibrate. If the pump is not installed level, output may be
affected.
• When two or more pumps are installed together, vibration
may be signicant, resulting in poor performance or failure.
Select a solid foundation (concrete) and fasten anchor bolts
securely to prevent vibration during operation.
• Allow sufficient space around the pump for easy access
and maintenance.
• Install the pump as close to the supply tank as possible.
• When handling liquids that generate gas bubbles (sodium
hypochlorite or hydrazine solution), install the pump in a
cool and dark place. Flooded suction installation is strongly
recommended.
Precautions for use
Caution
Caution
Caution
Caution
Caution

11
Safety instructions
Precautions for use
• Use care handling the pump. Do not drop. An impact may
affect pump performance. Do not use a pump that has
been damaged to avoid the risk of electrical damage or
shock.
• The pump has a rating of IP65 equivalent, but is not water-
proof. Do not operate the pump while wet with solution or
water. Failure or injury may result. Immediately dry off the
pump if it gets wet.
• Do not close discharge line during operation. Solution may
leak or piping may break. Install a relief valve to ensure
safety and prevent damaged plumbing.
• Solution in the discharge line may be under pressure.
Release the pressure from the discharge line before dis-
connecting plumbing or disassembly of the pump to avoid
solution spray.
• Wear protective clothing when handling or working with
pumps. Consult solution MSDS for appropriate precautions.
Do not come into contact with residual solution.
• Do not clean the pump or nameplate with a solvent such
as benzine or thinner. This may discolor the pump or erase
printing. Use a dry or damp cloth or a neutral detergent.
• Install a relief valve on a discharge line near the pump so
as to release the discharge pressure when it exceeds the
maximum level.
Caution
Caution
Caution
Requirement
Benzine
Thinner
Requirement

12
Overview
Introduction
Pump characteristics, features and part names are described
in this section.
Introduction
Pump structure & Operating principle
The EJ series is a diaphragm metering pump which consists of a pump head
and a drive unit with a built-in controller. A diaphragm is directly driven by elec-
tromagnetic force.
Principle of operation
The pulse signal via the PCB generates the electromagnetic force to make
reciprocating motion with the assistance of the spring force. The reciprocating
motion is transferred to a diaphragm through a plunger and then volumetric
change occurs in the pump head. This action transfers liquid along with pump
head valve action.
Control unit Pump head
Pump head valve
Diaphragm
OUT
IN
Spring
Pump head valve
Plunger

13
Overview
Operational functions
Features
● Multivoltage operation
The EJ series is a multivoltage type (100-240VAC) and can be selected with-
out local power limitations.
● High turndown ratio
Digitally-controlled spm range is 1-360spm.
● IP rating of 65 equivalent
This pump is not waterproof. Protect the pump with a cover when installing it
out of doors.
Operational functions
Manual mode
Run/stop the pump by the start/stop key. A stroke rate (MAN speed) can be
changed in the range of 1-360spm by the up key at any time during operation
or stop. See page 36 for detail.
*The pump can also be turned ON/OFF by switching the main power.
Run Run
Stop Stop
Key operation
(Start/Stop key)
Pump operation

14 Operational functions
EXT mode
The pump operation by the external signal. In this mode, the multiplier is xed
to 1 and the pump makes one shot at every input of the signal. See page 38 for
detail.
Example) The pump makes one shot per signal.
STOP function
The start/stop of the pump can be controlled by the external STOP signal. See
page 39 for detail.
*The pump resumes operation when the STOP signal is released.
The pump stops running while
the STOP signal is inputted.
Pulse signal input
Pump operation
Run Run
Stop
STOP signal input
Pump operation

15
Overview
Part names
Part names
Pump
Control unit
Used for the start/stop of
the pump and stroke rate
adjustment/programming.
Air vent port
Always connect a tube. Be sure
to return the tube end to a supply
tank or a container.
A circumferential direction of the
port can be changed up to 90
degrees counterclockwise from
the original position.
Adjusting screw
Used for opening the air vent port.
Nameplate
Describes the pump
specifications.
Base
Always fix with bolts.
Pump head
Inlet
Outlet
Air vent body
EXT terminal
(5-pin DIN connector)
Remove the protective
cap before use.
Power cable

16 Part names
Operational panel
ON
START
STOP
UP key
Used for increasing numeric val-
ues. If this key is kept pressed, the
value rises faster. The EJ doesn't
have the DOWN key, so if you
want a lower spm, first get to the
max 360 spm and then push this
key once. The spm will return to 1.
Display
Stroke rate and operational
status are shown here.
START/STOP key
Used for starting/stopping the pump. If
pushed while the UP key is depressed,
the pump enters EXT mode.
ON LED
Lights as turning on power
and flashes at each stroke.

17
Overview
■ Basic displays & Pump states
Display info ON LED lights ON LED ushes
(in sync with each shot)
A wait state in MAN mode:
The display shows the MAN
speed in spm.
Operation in MAN mode:
A current spm ashes (not in
sync with a pump shot).
―
Operation in EXT mode:
A current spm ashes (not in
sync with a pump shot).
STOP signal is entered in MAN
mode. If the spm ashes, it
means the pump is just suspend-
ed and will restart as the signal is
turned OFF.
―
STOP signal is entered in EXT
mode. If the spm ashes, it
means the pump is just suspend-
ed and will restart as the signal is
turned OFF.
―
―Keypads are locked and any key
operation is cancelled.
Keypads are locked in a sus-
pended MAN/EXT mode with the
STOP signal.
―
The pump is in maintenance
mode. When extending the dia-
phragm, the display ashes.
―
Part names
Represents the pump
is receiving the STOP
signal.
Represents keypads are locked.
Represents the pump
is in EXT mode.
Shows a pump speed in spm. The spm
flashes during operation in MAN and EXT
modes. The indication changes to "- - -"
when the pump enters maintenance mode.

18 Identication codes
Identication codes
The model codes of the pump/drive units represent the following information.
EJ - B 11 VC E R -
a b c d e f g h i
a. Series name
EJ: Multivoltage electromagnetic metering pump
b. Drive unit (Average power consumption)
B: 15W
c. Diaphragm effective diameter
09: 8mm 11: 10mm 16: 15mm 21: 20mm
d. Wet end materials
Code Pump head Valve O ring Valve seat Gasket Diaphragm
VC PVC Alumina ceramic FKM FKM
PTFE
PTFE
+ EPDM
(EPDM is not a
wet end.)
VH HC276 EPDM EPDM
TC PVDF Alumina ceramic FKM FKM
Material code
PVC : Transparent polyvinyl chloride PVDF : Polyvinylidene diuoride
HC276 : HASTELLOY C276 FKM : Fluorine-contained rubber
EPDM : Ethylene-propylene rubber PTFE : Polytetrauoroethylene
e. Tube I.D.
Area Europe Australia
Material VC VH TC VC VH TC
No code ø4×ø6 ø4×ø6 ø4×ø6 ø6×ø8 ø6×ø8 ø6×ø8
1ø4×ø9 ø4×ø9 ―ø4×ø9 ø4×ø9 ―
2ø4×ø6 ø4×ø6 ø4×ø6 ø4×ø6 ø4×ø6 ø4×ø6
3ø6×ø8 ø6×ø8 ø6×ø8 ø6×ø8 ø6×ø8 ø6×ø8
7ø1/4"×ø3/8" ø1/4"×ø3/8" ø1/4"×ø3/8" ø1/4"×ø3/8" ø1/4"×ø3/8" ø1/4"×ø3/8"
23 ø6×ø12 ― ― ø6×ø12 ― ―
24 ø5×ø8 ―ø5×ø8 ø5×ø8 ―ø5×ø8
f. Power cable
E: European type A: Australian type
g. Control unit function
R: With external control
h. Special version
i. Special conguration

19
Installation
Pump mounting
This section describes the installation of the pump, tubing and
wiring. Read through this section before work.
Observe the following points when installing the pump.
• Risk of electrical shock. Be sure to turn off power to stop the pump and
related devices before service is performed.
• If you notice any abnormal or dangerous conditions, suspend operation
immediately and inspect/solve problems.
• Do not place explosive or ammable material near the pump.
• Do not use a damaged pump. Use of a damaged pump could lead to an
electric shock or death.
Pump mounting
Select an installation location and mount the pump.
Necessary tools
• Four M5 bolts (pump mounting)
• Adjustable wrench or spanner
Select a suitable place.
Select a level location, free from vibration, that won't hold liquid. See
page 10 for detail. Flooded suction is recommended when handling a
gaseous liquid such as sodium hypochlorite.
Anchor the pump with the M5 bolts.
Be sure to x the pump at four points.
NOTE
Select a level location. If the pump is not installed level,
output may be affected.
1
2
Installation

20 Pipework
Pipework
Connect tubes to the pump and install a check valve.
Before operation
• Cut the tube ends at.
Necessary tools
• Adjustable wrench or spanner
Tube connection
a. Pass a tube into the tting nut and
hoes stopper and then slide it down to
the hose adapter as far as it will go.
b. Fit the tube end (hose adapter) to the
tting. Then hand tighten the tting nut.
c. Retighten the tting nut by turning it
180 degrees with an adjustable wrench
or spanner.
*The plastic tting nut may be broken if it is
tightened too much.
Tube end (Side view)
Tube
Fitting nut
Fitting
Hose stopper
Hose adapter
ab
O ring