IWAKI EH-E User manual

IWAKI
Electromagnetic Metering Pump
Instruction Manual
EH-E Type
Read this manual before use of product
IWAKI CO., LTD
6-6 Kanada-sudacho, 2-chome, Chiyoda-ku
Tokyo 101-8558 Japan
Tel: [phone] Fax: [phone]
T308-1 99/2

Thank you for choosing an Iwaki’s EH-E Series metering pump. This instruction manual deals with
the correct installation, operation, maintenance, and troubleshooting procedures for the EH-E model
metering pump. Please read through it carefully to ensure the optimum performance, safety and
service of your pump.
Contents
IMPORTANT INSTRUCTION ------------------------------------------1
Safety Section ------------------------------------------2
1.INTRODUCTION ------------------------------------------5
1.Unpacking ------------------------------------------6
2.Operation Principle ------------------------------------------6
3.Specifications ------------------------------------------7
4.Dimensions ----------------------------------------10
2.INSTALLATION ----------------------------------------14
1.
Before Use ----------------------------------------15
2.
Location ----------------------------------------16
3.
Supply Tubing ----------------------------------------16
4.
Discharge Tubing ----------------------------------------17
5.
Electrical ----------------------------------------17
3.OPERATION ----------------------------------------18
1.Priming ----------------------------------------19
2.
Adjustment ----------------------------------------20
3.
Calibration ----------------------------------------20
4.
External Control
4,1Display/Keypad and Wiring Overview -----------------------------21
4,2 Quick Reference ----------------------------------------22
4,3 Digital Mode ----------------------------------------25
4,4 Analog Mode / STOP Function ---------------------------------------26
4,5 AC Power Interruption ----------------------------------------28
5.MAINTENANCE ----------------------------------------29
1.
Maintenance ----------------------------------------30
2.
Diaphragm Replacement ----------------------------------------30
3.
Valve Replacement ----------------------------------------30
4.
Tubing ----------------------------------------30
5.
Names of Part and Structure ----------------------------------------31
6.
Troubleshooting ----------------------------------------35
1.Troubleshooting ----------------------------------------36

Important Instruction
For the Safe and Correct Handling of the Pump
 Read the "Safety Instructions" sections carefully to prevent accidents involving your customers
or other personnel and to avoid damage or loss of other assets. Always follow the instructions
and advice found in these sections.
 Observe and abide by the instructions described in this manual．These instructions are very
important for protecting pump users from dangerous conditions and situations related with the
use of the pump system．
 The symbols relate to the following meanings described below.
Warning.
Nonobservance or misapplication of the contents of the
"Warning" section could lead to a serious accident,including
death or injury.
Caution.
Nonobservance or misapplication of the contents of the
"Caution" section could lead to serious physical injury to the
user or serious damage to the product.
Types of Symbols
Indicates that "Warning" or "Caution" must be exercised. Inside this triangle, a
concrete 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.
- 1 -

Safety Section
Warning.

 
 Turn off the power supply
Working without disconnecting the power supply 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．Electrical shock

 
 Terminate operation！
！！
！
When you detect or become aware of a dangerous sign or abnormal condition
during operation , terminate the operation immediately and start 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．Prohibited

 
 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
lwaki ．No remodeling

 
 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．
Wear protective
gear

 
 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. Prohibited
- 2 -

Safety Section
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 and operate the pump . Pump
operators must have a sound knowledge of the pump and its operation．Prohibited

 
 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．Prohibited

 
 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．Prohibited

 
 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
spillage or leakage . Do not wet or
dampen

 
 Ventilate！
！！
！
Poisoning may result during an operation which involves, toxic or odorous liquid.
Ventilate the operating site sufficiently．
Caution

 
 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．Caution

 
 Damaged pump
Never operate a damaged pump. A damaged pump may cause leakage or
electrical shock.
Prohibited

 
 Do not damage or change 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. Caution
- 3 -

Safety Section
Caution.

 
 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
grounding terminal．Grounding

 
 Install an earth leakage breaker (option)！
！！
！
The operation of a pump without using an earth leakage breaker may cause an
electrical shock . Please purchase an optional leakage breaker and install in the
system．Electrical
Shock

 
 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

 
 Follow the instruction manual
Replace the consumable part 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(40℃or higher）or
extremely low (0℃or lower)．Prohibited

 
 Disposal of used pump
Disposal of used or damaged pumps must be done in accordance with the
relevant local law and regulations .(Consult a licensed industrial waste products
disposing company.)
- 4 -

1.INTRODUCTION
1. Unpacking -----------------------------6
2. Operation Principle ------------------6
3. Specifications--------------------------7
4. Specifications of Control Unit------9
5. Dimensions---------------------------10
- 5 -

1.Unpacking
After unpacking the goods, 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, voltage, etc., shown on the nameplate
represent what you ordered?
(2)Has the goods been damaged in transit? Are the
bolts and nuts loose?
2.Operation Principle
The EH Series electronic metering pump consists of a
pump unit, a drive unit, and a control unit. The drive
unit is an electromagnetic solenoid. When the
solenoid coil is energized by the control unit the
armature shaft moves forward due to the magnetic
force of the solenoid. The shaft is attached to a PTFE
faced diaphragm which is part of the pump unit. The
diaphragm is forced into the pump head cavity
decreasing volume and increasing pressure which
forces liquid in the pump head out though the
discharge check valves. When the solenoid coil is de-
energized, a spring returns the armature to its starting
position. This action pulls the diaphragm out of the
head cavity increasing volume and decreasing
pressure. Atmospheric pressure then pushes liquid
from the supply tank through the suction check valves
to refill the pump head.
- 6 -

3.Specifications

 
 Pump identification
EH -E30 PC - 23U P E 8 -
①②③④⑤⑥⑦⑧⑨
①Series name EH Series
②Drive component E: 48 W
③Diaphragm effective diameter 30:30mm 35:35mm 45:45mm 55:55mm
④Material of liquid end
Symbol Pump head
& Fittings
Valve Balls Valve seat &
O-ring(Gasket)
Diaphragm Gasket
VC PVC CE FKM
V6 PVC SUS316 EPDM
PC GFRPP CE FKM
VM M-PVC CE FKM
FC PVDF CE PCTFE(PTFE)
SH SUS316 HC276 SUS316(PTFE)
PTFE
(bonded to EPDM)
PTFE
PVC : Polyvinyl chloride (Transparent)
GFRPP : Glass fiber reinforced polypropylene
M-PVC : Polyvinyl chloride (Machined)
CE : Alumina ceramics
SUS316 : 316 Stainless steel
FKM : Fluoroelastomer
EPDM : Ethylene propylene diene methylene
PTFE : Polytetrafluoroethylene
PVDF : Pplyvinylidenefluoride
HC276 : Hastelloy C276
⑤Voltage symbol
Symbol Voltage Input voltage Frequency
100 AC100V AC 90 ～110V 50-60 Hz
11U AC 110V, 115V AC 90 ～126V 50-60 Hz
20J AC 200V AC 180 ～220V 50-60 Hz
23U AC 230V AC 207 ～253V 50-60 Hz
20E AC 220,230,240V AC 198 ～264V 50-60 Hz
20E AC 220,230,240V AC 198 ～264V 50-60 Hz
-7-

⑥Power code
P with plug
No symbol without plug
⑦Controller E : E type
⑧Connection
Symbol Applicable hose dia. (ID×OD) Type
4φ8 ×φ13 (mm) VC,V6,PC,VM
5φ9 ×φ12 (mm) VC,V6,PC,VM
6φ10 ×φ12(mm) FC
8φ1/2” ×φ3/8”(inch) VC,V6,PC,VM,FC
9 Rc 1/4” SH
10 NPT 1/4” SH
11 φ10 ×φ16(mm) VC,V6,PC,VM
14 Rc 3/8” SH
15 NPT 3/8” SH
⑨Special configuration
01~99: Special material , special connection port diameter , etc.
 Controller identification
EHC - 100
P E- ＊＊
＊＊＊＊
＊＊
① ② ③④ ⑤
①Controller name EH
②Voltage symbol
10 0
11 U
20 J
20 E
23 U
AC100V
AC110V,AC115V
AC200V
AC220V,AC230V,AC240V
AC230V
AC 90 ~126V
AC 90 ~ 126V
AC180 ~ 220V
AC198 ~ 264V
AC207 ~ 253V
50-60
Hz
③Lead wire P：with plug
No symbol：without plug
④Controller E
⑤Special configuration 0 ~ 99
Points to be noted in handling
1.Do not detach the control unit unless unavoidable.
2.Never use the control unit with pumps having different symbols for driving unit and power source
voltage specified on the control unit. (Check the nameplate.)
Caution
Operation with a pump having different symbols for driving unit and power source voltage other than
those specified may cause failure or trouble in the electronic circuit of the control unit or the driving
unit of the pump.
- 8 -


 
 Pump specifications
Model
Output
capacity
(ml/min)
Output per
Stroke
(ml/stroke)
Maximum
Pressure
(MPa)
Stroke
frequency (spm)
Stroke
length %
(mm)
30 340 0.19~0.94 1
35(SH) 520 0.29~1.44 0.7(0.6)
45 750 0.42~2.08 0.4
E
55 1250 0.69~3.47 0.2
0~360 20~100
(0.3~1.5mm)
Note 1. The performance data is based on clean water at 25℃under rated voltage.
Note 2. Capacity is that at the max. pressure.(at max.stroke length and max.stroke frequency)
Capacity exceeds the value at max.pressure when pump operates under low pressure.
Note 3. Operating ambient temperature : 0 ~ 40℃
Relative humidity : 30% to 90% non-condensing
Note 4. Liquid temperature : PVC/PVDF 0℃~ 40℃(PC/SH : 0℃~ 60℃)
Note 5. Permissible voltage fluctuation : Within ±10% of rating
*Please note that for the purpose of improvement,parts which have no effect on specifications
and fitting sizes are subject to change without prior notice.
*For SH type, install air chamber of approx. 500 ml volume at the location as close to pump
discharge port.
Adjustment Range Recommended stroke length adjustment range 20% to 100%
Recommended frequency adjustment range 0 to 360 stroke per minute

 
 Control unit specifications
Control
function
Selection of Function.
The function is selected
with the operation key.
MAN : Manual control
EXT : External signal control
(EXT,START/STOP)
EXT Digital input dividing
Digital input counter
1 : n , n=1~999
n : 1 , n=999~1
Setting
Analog input
Analog input
MAN
DC 4~20 mA ,DC 0~20 mA
DC 20~4 mA ,DC 20~0 mA
Stroke rate 0~360spm
Setting method Operation 4keys START/STOP,EXT,
Max spm Fixed at stroke rate of 360 spm
Control
Stop(Input stop) Stopped when contact signal is input.
Data LCD,4-digit,State of drive,Set value etc.,Display
Pump operation Green LED(Flashes in sync with pump stroke)
Pules input No-voltage contactInput signal
Stop input No-voltage contact
Output Sensor power DC 12V , 10mA
Power supply AC 100 : AC 90 ~ 110 V , AC110V･
･･
･AC115V:AC 90 ~ 127V
AC 200 : AC 180 ~242 V , AC 230 : AC198 ~264 V
- 9 -

5. Dimensions (Material symbol: VC/V6/PC/VM/FC )
- 10 -

5. Dimensions ( Material symbol: VC/V6/PC/VM/FC )
- 11 -

5. Dimensions (Material symbol: SH )
- 12 -

5. Dimensions ( Material symbol: SH )
- 13 -

2. INSTALLATION
1. Before Use ---------------------------15
2. Location ---------------------------16
3. Suction tubing ---------------------------16
4. Discharge tubing ---------------------------17
5. Electrical ---------------------------17
- 14 -

1.Before Use
Operators and maintenance service staff must read the instruction manual thoroughly
before using the products．Do not operate the pump system unless all of the contents in
the manual are completely understood．
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.
 Specified power only．
．．
．
Do not operate the pump on voltage, which is not specified on the name plate.
Failure to do so may result in damage or fire．Only the specified power level is to be applied.
 Keep from heat or flame．
．．
．
Do not place any dangerous materials or flammable objects near the pump for the prevention of
fire or accident．
 Damaged pump
Never operate a damaged pump．A damaged pump may cause leakage or electrical shock.
1.Dropping the pump or subjecting it to strong impacts
may result in faulty performance. Handle the pump
with care.
2.When installing the pump ,avoid places exposed to
direct sunlight or direct rain with an ambient
temperature of above 400C ,or with a relative humidity
or above 90%.Though the pump has a simple
waterproof and dust proof structure, a sheltered
location is recommended.
- 15 -

2.Location
Choose a location for the pump which is clean, dry, close to an electrical outlet, and allows
convenient access to stroke length control, frequency control, and tubing connections. Avoid areas
where ambient temperature exceeds 40℃or falls below 0℃, or where the pump or tubing would be
exposed to direct sunlight. Flooded suction (mounting the pump below the level of liquid in the
supply tank) is strongly recommended, especially when pumping liquids that readily generate gas
bubbles. Sodium hypochlorite and hydrogen peroxide are common examples of such liquids.
(See Figure 1.)
If flooded suction mounting is not possible, a shelf adjacent to (but not directly above) the supply
tank often works well. (See Figure 2.) The supply tank or cover can also be used if it has provisions
for mounting a pump. (See Figure 3.) In any care, the total suction lift should not exceed 1.5m.
3.Supply tubing
The supply tubing run should be as short as possible. For flooded suction mounting, install a shut-
off valve with an appropriate tubing connector at the tank outlet. Cut a length of tubing and install
between the shut-off valve and the pump inlet fitting. For suction lift applications, install a foot
valve on one end of suction tubing and cut the tubing to a length such that the foot valve hangs
vertically about 25mm above the bottom of the tank. Avoid any loops in the tubing run that could
form a vapor trap. Running the tubing through a length of rigid pipe will help to keep tubing
straight.
CAUTION
Suction tube length must be less than 1m. If it goes more
than
1m, the discharge capacity drops.
-16-

4.Discharge tubing
The discharge tubing run is less critical and can be any length required to reach the application point.
Avoid sharp bends or kinks in the tubing and protect the tubing from sharp edges that could chafe or
cut it. If applicable, install the injection valve at the injection point and connect the tubing to the
injection valve.
5.Electrical
Connect the pump power cord to a GROUNDEDoutlet supplying proper voltage. Avoid branch
circuits that also supply power to heavy machinery or other equipment that could generate electri-
cal interference.
- 17 -

３．
OPERATION
1.Priming ----------------------------------------------19
2.Adjustment -------------------------------------------20
3.Calibration ----------------------------------------------20
4.External Control
4,1 Display/Keypad and Wiring Overview----------21
4,2 Quick Reference -----------------------------------22
4,3 Digital Mode -----------------------------------23
4,4 Analog Mode / STOP Function-------------------24
4,5 AC Power Interruption------------------------------26
- 18 -