IWAKI PUMPS EH-E Series User manual

Read this manual before use of product
IWAKI
Electromagnetic Metering Pump
EH-E Type
Instruction Manual
T308-3 02/06
( )Country codes
IWAKI CO.,LTD. 6-6 Kanda-Sudacho 2-chome Chiyoda-ku Tokyo 101-8558 Japan
TEL:[phone] FAX:[phone](http://www.iwakipumps.jp)
U.S.A. : IWAKI WALCHEM Corporation
Australia : IWAKI Pumps Australia Pty. Ltd.
Singapore : IWAKI Singapore Pte. Ltd.
Indonesia : IWAKI Singapore (Indonesia Branch)
Malaysia : IWAKIm Sdn. Bhd.
Taiwan : IWAKI Pumps Taiwan Co., Ltd.
Thailand : IWAKI (Thailand) Co.,Ltd.
Hong Kong : IWAKI Pumps Co., Ltd.
China : IWAKI Pumps Co., Ltd. (Guangzhou office)
China : IWAKI Pumps Co., Ltd. (Beijing office)
China : IWAKI Pumps (Shanghai) Co., Ltd.
Philippines : IWAKI Chemical Pumps Philippines, Inc.
Korea : IWAKI Korea Co.,Ltd.
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
Germany : IWAKI EUROPE GmbH
Italy : IWAKI Italia S.R.L.
Denmark : IWAKI Pumper A/S
Sweden : IWAKI Sverige AB
Finland : IWAKI Suomi Oy
Norway : IWAKI Norge AS
France : IWAKI France S.A.
U.K. : IWAKI PUMPS (UK) LTD.
Switzerland: IWAKI (Schweiz) AG
Austria : IWAKI (Austria) GmbH
Holland : IWAKI Holland B.V.
Spain : IWAKI Iberica Pumps, S.A.
Belgium : IWAKI Belgium n.v.
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]
TEL : [phone] FAX : [phone]

Thank you for choosing an Iwaki's EH-E Series metering pump. This instruction
manual deals with the correct installation, operation, maintenance, and trou-
bleshooting 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. Operation Function .............................................................10
5. Controller Display ...............................................................12
6. Dimensions ........................................................................14
2. INSTALLATION ......................................................................................18
1. Notes on Installation ...........................................................19
2. Location .............................................................................21
3. Tubing ................................................................................22
4. Electrical Wiring ..................................................................25
3. OPERATION ..........................................................................................28
1. Precaution for Operation .....................................................29
1-1. Bleeding .....................................................................29
1-2. Adjustment of Discharge Capacity ...............................31
2. Operation ...........................................................................33
2-1. Overview Operating Scheme .......................................33
2-2. Setting and Operation of Controller .............................35
4. MAINTENANCE .....................................................................................45
1. Maintenance .......................................................................46
2. Diaphragm Replacement ....................................................46
3. Valve Replacement .............................................................46
4. Tubing ................................................................................46
5. Consumable parts ..............................................................46
6. Names of Part and Structure ...............................................47
7. Troubleshooting ..................................................................49

-
1
-
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 cir-
cle, a concrete and practical image of the activity to be avoided is
depicted.
Indicates an important action or procedure which must be per-
formed or carried out without fail. Failure to follow the instructions
herein can lead to malfunction or damage to the pump.
For the Safe and Correct Handling of the Pump
• Read the "Safety Instructions" sections carefully to prevent accidents involving your
customers or other person 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
Caution
Important Instruction
Nonobservance or misapplication of the contents of
the "Warning" section could lead to a serious acci-
dent, including death or injury.
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.

-
2
-
Safety Section
Warning
•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
•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 dur-
ing 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
•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

Safety Section
-
3
-
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
•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
•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
•Ventilate
Poisoning may result during an operation which involves, toxic or odorous liquid.
Ventilate the operating site sufficiently.
Caution
•Damaged pump
Never operate a damaged pump. A damaged pump may cause leakage or electri-
cal shock.
Prohibited

-
4
-
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
The operation of a pump without using an earth leakage breaker may cause an
electrical shock. Please install a leakage breaker 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.
•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.)
•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).
Prohibited

-
5
-
1. INTRODUCTION
1. Unpacking
...........................................
6
2. Operation Principle
.............................
6
3. Specifications
......................................
7
4. Operation Function
...........................
10
5. Controller Display
..............................
12
6. Dimensions
.......................................
14

1. Unpacking
-
6
-
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 name-
plate 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 increas-
ing 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.
Control unit
Stroke length
adjusting dial
Drive unit
Pump
head
Valve
SpringPlunger Diaphragm

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

-
8
-
hPower code
P with plug
No symbol without plug
jController E : E type
kConnection
lSpecial configuration
01~99: Special material, special connection port diameter, etc.
•Controller identification
Symbol
4
Applicable hose dia. (ID ×OD) Type
φ 8 × φ 13 (mm) VC, V6, PC, VM
5
φ 9 × φ 12 (mm) VC, V6, PC, VM
6
φ 10 × φ 12 (mm) FC
8
φ 1/2” × φ 3/8” (inch) VC, V6, PC, VM, FC
14 Rc 3/8” SH
15 NPT 3/8” SH
9 Rc 1/4” SH
10 NPT 1/4” SH
11
φ 10 × φ 16 (mm) VC, V6, PC, VM
EHC - 100 P E - ****
asdfg
aController name
sVoltage symbol
50-60
Hz
dLead wire
fController
gSpecial configuration
EH
10 0 AC 100 V AC 90 ~ 126 V
11 U AC 110 V, AC 115 V AC 90 ~ 126 V
20 J AC 200 V AC 180 ~ 220 V
20 E AC 220 V, AC 230 V, AC 240 V AC 198 ~ 264 V
23 U AC 230 V AC 207 ~ 253 V
P : with plug
E
0 ~ 99
No symbol : without plug
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.

-
9
-
Mode Mode MAN (Manual)
EXT (External)
Changeover Entering by keys (EXT, START/STOP)
Function Parameters EXT :
Digital input pulse multiply 1 : n n = 1 - 999
Digital input pulse dividing n : 1 n = 999 - 1
Analog input SET point1 : Current 0 - 20 mA
Stroke rate 0 - 360 spm
SET point2 : Current 0 - 20 mA
Stroke rate 0 - 360 spm
MAN : Stroke rate 0 - 360 spm
Keys 4 keys (START/STOP, EXT, ▲, ▼)
Upper limited spm 360 spm
Stop By receiving stop signal from outside
Indication Display 4 digit 14 segment LCD
Stroke Green LED
Input Stop signal No voltage contact pulse signal
Pulse No voltage contact pulse signal
Output Power source for sensor 12VDC 10 mA or less
Power
source AC 100 : AC 90 - 127 V, AC 110/AC 115 : AC 90 - 127 V,
AC 200 : AC 180 - 242 V, AC 230 : AC 198 - 264 V
•Pump specifications
Output Stroke
Model capacity length %
(ml/min)
E
340
520
750
1250
Output per Maximum Stroke
Stroke Pressure frequency
(ml/stroke) (MPa)
0.19 ~ 0.94 1
0.29 ~ 1.44 0.7 (0.6)
0.42 ~ 2.08 0.4
0.69 ~ 3.47 0.2
30
35 (SH)
45
55
(spm) (mm)
0 ~ 360 20 ~ 100
(0.3~1.5 mm)
Note 1. The performance data is based on clean water at 25 °C 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 °C
Relative humidity : 30 % to 90 % non-condensing
Note 4. Liquid temperature : PVC/PVDF 0 °C ~ 40 °C (PC/SH : 0 °C ~ 60 °C)
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

-
10
-
run stop run
ON ON ON
Operation chart
START/STOP key
Operation
•Analog input operation (0 - 20 mA)
0 - 360 spm operation in proportion to 0 - 20 mA current input. Pump is fixed at 360 spm when came the
input signal exceeding 360 spm.
Straight line is automatically made by setting two points. So, the pump may not come to 0 spm even if 0
mA current comes.
(Condition)
1. A1, A2≤20 mA
2. P1, P2≤360 spm
3. A1≠A2
4. P1≠P2
0A1
SET point 1
Current
A2
SET point 2
Current
20 mA
360 spm
SET point 2 spm
SET point 1 spm
4. Operation Function
•Manual operation
Stroke rate can be set from 0 to 360 spm with keys ▲and ▼, and pump start and stop can be done with
keys START/STOP. Both setting can be done while the pump stops or operates.

-
11
-
•Digital input (pulse multiply) operation
Pump makes strokes from 1 to 999 responding to external pulse signal. Stroke rate is the spm set for man-
ual operation. The pulses which came while operation are put in memory up to 255 pulses. (It is possible to
make the pulses not to be put in memory.)
Digital input (multiplying) example (X 5)
Pump stroke
Ext. pulse
12345 12345
•Digital input (pulse dividing) operation
Pulse dividing operation by external pulse signals for 999 : 1 to 1 : 1. Stroke rate is the one set for manual
operation. When the signals exceeding the set stroke rate came, excessive signals can be put in memory up
to 255 pulses.
Digital input (Dividing) example (/ 5)
Ext. pulse
Pump stroke
123451234512345

-
12
-
•Controller display and panel
EXT
START/STOP
EH-E
ON
WAIT EXT STOP OVER SET
Alpha/numeric display
1
2
STOP indicator Over indicator
EXT indicator
WAIT indicator
START/STOP key
ON light
EXT key
SET indicator
DOWN key
UP key
Visible when pump is
operating via external
input.
Visible when pump
is in WAIT mode.
Indicates stroke frequency, or
external mode or external
settings.
Visible when the
pump is stopped via
external signal. The
pump stops when
visible.
Visible when signal exceeds
the 360 spm capability.
Increases numeric values. 
Used with EXT key to select
external modes.
SET point indicator
Visible when SET point 1 and
2 are set at EXT mode and
analog input (0 - 20mA)
operation.
Decreases numeric values. 
Used with EXT key to select
external setting mode.
Visible when pump
external mode
and/or settings are
being selected.
Push to set pump
for external input
operation.
Manually starts or
stops the pump. 
This key is used in 
setting external modes.
Indicates power to
the pump and blinks
with each stroke.
•Basic display
Display examples Meanings
Running at manual operation mode.
Value shows set spm.
Waiting at WAIT mode.
Displayed value is set value at manual operation mode.
Running at EXT operation mode (Pulse multiply).
Display shows running at 1 : 5 multiply.
WAIT EXT STOP OVER SET
1
2
360
EXT STOP OVER SET
1
2
360
WAIT
EXT STOP OVER SET
1
2
X 5
WAIT
5. Controller Display

-
13
-
Display examples Meanings
EXT STOP OVER SET
1
2
WAIT
5 I
Running at EXT operation mode (Dividing).
Display shows running at 5 : 1 dividing.
EXT STOP OVER SET
1
2
WAIT
Running at EXT operation mode (Analog input 0 - 20 mA).
Display shows running at 120 spm speed responding to input current.
EXT STOP OVER SET
1
2
WAIT
5 I
•Alarm display
Display examples Meanings
Display for excess spm at EXT operation (analog input operation).
In analog input operation, visible if external signal exceeding 360 spm opera-
tion comes. While visible, pump runs at fixed speed of 360 spm.
Display for excess spm at EXT operation (Pulse multiply operation).
In multiply operation, visible if next pulse comes when the pump is making
the strokes. While visible, max. 255 pulses can be put in storage. You can
set not to put them in storage.
Display for excess spm at EXT operation (Pulse dividing operation).
In dividing operation, visible if signal which exceeds max. preset number of
strokes comes. While visible, the pump runs at fixed max. number of
strokes. You can set so that excessive input pulses can be put in storage up
to 255 pulses.
EXT STOP OVER SET
1
2
360
WAIT
EXT STOP OVER SET
1
2
X 5
WAIT
EXT STOP OVER SET
1
2
WAIT
5 I
EXT STOP OVER SET
1
2
A A
WAIT
In setting mode.
EXT STOP OVER SET
1
2
I G
WAIT

-
14
-
6. Dimensions (Material symbol: VC/V6/PC/VM/FC)
(242)
197 16.5
154 27
114.3 25.4
132
17
(80)
(246)
163
77
146
•EH-E30
(242)
197 16.5
154 27
114.3 25.4
132
77
146
163
17
(80)
(246)
•EH-E35

-
15
-
6. Dimensions (Material symbol: VC/V6/PC/VM/FC)
(242)
197 19
17
(71)
(255)
163
29154 146
25.4
29
114.3
77
132
•EH-E45
(242)
197 21.5
17
(71)
(255)
163
154 29
114.3 25.4
132
77
146
•EH-E55

-
16
-
(249)
154 25 154
Rc 1/4
Rc 1/4
4
φ
OUT
IN
17
(97)
163 (300)
•EH-E30
Rc 1/4
Rc 1/4
4
φ
OUT
(249)
154 25
114.3 25.4
77
132
17
(94)
163
(303)
146
IN
•EH-E35
6. Dimensions (Material symbol: SH)

-
17
-
Rc 3/8
Rc 3/8
10
φ
OUT
IN
154
(254)
26 146
17
(92)
163 (327.5)
•EH-E45
Rc 3/8
Rc 3/8
10
φ
OUT
IN
17
(79)
163 (330.5)
132
77
114.3
154 31
(259)
146
25.4
•EH-E55
6. Dimensions (Material symbol: SH)

-
18
-
2. INSTALLATION
1. Notes on Installation
.........................
19
2. Location
............................................
21
3. Tubing
...............................................
22
4. Electrical Wiring
................................
25