background image

 

 

 

Jowa AB 

TELEFON INTERNET  

Tulebo 865 

+46(0)31-795 00 40 

www.jowa.se 

 

S-428 34  KÅLLERED 

 

GÖTEBORG TELEFAX 

EMAIL 

 

 

+46(0)31-795 45 40 

info@jowa.se 

 

 
 

 

 

JOWA  

BIO – STP-2  

SEWAGE TREATMENT PLANT 

 

 

 

 

OPERATION AND TECHNICAL MANUAL 

 

 

 

 

 

 

 

 

 

 

 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

Table of Contents

 

1.1

 

G

ENERAL

 

1 

SYSTEM DESCRIPTION 

2 

SPECIFICATIONS 

3 

INSTALLATION INSTRUCTIONS 

3.1 D

ELIVERY

 

3.2 JOWA

 

BIO

 

STP

 LOCATION

 

3.3 E

XTERNAL PIPE CONNECTIONS

 

3.4 E

LECTRIC CONNECTIONS

 

3.5 E

XT

.

 ALARM CONNECTION

 

3.6 E

XTERNAL VALVES INSTALLED BY YARD 

(N

OT INCLUDED

3.7 V

ACUUM SYSTEM

 

4 

OPERATIONS 

4.1 S

TART UP

 

4.2 N

ORMAL OPERATION

 

4.3 N

ORMAL OPERATION WITH STERILISATION OF THE DISCHARGE WATER

 

4.4 D

ISCHARGE OF BIOREACTOR AND SETTLING TANK

 

4.5 M

AINTENANCE

 

5 

TROUBLESHOOTING 

6 

P&I DIAGRAM 

7 

MECHANICAL GA DRAWINGS 

8 

ELECTRICAL WIRING DIAGRAMS 

9 

DISCHARGE PUMP 

10 

MACERATING PUMP 

11 

METERING PUMP (OPTIONAL) 

12 

AIR BLOWER 

13 

JOWA UV (OPTIONAL) 

14 

LEVEL SWITCHES 

15 

SPARE PART LIST 

16 

CERTIFICATES 

17 

VACUUM SYSTEM (OPTIONAL) 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

Introduction 

 
The JOWA BIO STP (Sewage Treatment plants) are designed for automatic operation 
onboard ships in accordance with

 

IMO MEPC2(VI) and meets all the requirements in Marpol 

73/78 annex IV. 
 
The JOWA BIO STP is an aerated, submerged, fixed-film unit with a proprietary aeration 
system that provides major advantages for the operators. The Bioreactor contains a cross-
fluted structured matrix, on which the degrading bacterial biomass adheres and rapidly grows. 
The Bioreactor ensures maximum optimum biological treatment and the efficient aeration 
system ensures that the Bioreactors produce no offensive odours. 
 
1.1 General 
To obtain all advantages operating the JOWA BIO STP, be assured all users have adequate 
education for the equipment. 
That the installation is correct maintained and operated in accordance with the instruction in 
this manual.  
Otherwise the functions of the equipment cannot be guaranteed. 
 
Before installation and start up, read this manual carefully. 
 
Supplier and manufacturer: 

Jowa AB 

   Tulebo 

865 

   S-428 

34 

Kållered, 

Gothenburg 

   Sweden 
 

 

 

Phone: 

+46 31 795 00 40 

 

 

 

Fax: 

+46 31 795 45 40 

   E-mail: 

info@jowa.se 

 

 

  www.jowa.se 

 
 

background image

Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

1   System description 

The JOWA BIO STP is an aerated, submerged, fixed-film unit with a proprietary aeration 
system that provides major advantages for the operator.  
 
The raw sewage is led to the pre-treatment chamber. In the pre-treatment chamber there is a 
submerged macerating pump. The pump macerates the raw sewage to very small pieces 
before it enters the bioreactor. The macerating pump is constantly running and when there is 
no inlet water it collects water and sludge from the bottom of the bioreactor. The macerating 
of the bottom sludge in the bioreactor prevents the bioreactor matrix from clogging.    
 
The Bioreactor contains a polypropylene, cross-fluted structured matrix, as its media, on 
which the degrading bacterial biomass adheres and rapidly grows. This matrix is 
manufactured so that constant inter-mixing of the wastewater occurs in each vertical column 
of the media, ensuring maximum contact between the effluent and the surfaces on which the 
biomass is fixed. The wastewater is driven upwards by strategically placed aerators over 
alternate columns of the matrix and it flows downwards in the adjacent column. In this way, 
the effluent moves in a serpentine fashion through the whole of the Bioreactor to ensure the 
maximum contact time and optimum biological treatment. 
  
There are no moving parts inside the Bioreactor, and the self-cleaning aeration system, fed by 
the air blower, provides:  

(i) 

The required amount of dissolved oxygen for the biomass to feed on and degrade 
the waste.  

(ii) 

The motive force for the serpentine passage of the wastewater through the aeration 
chamber with maximum contact with the degrading bacteria.  

(iii) 

The removal of solids from the Bioreactor without the need for back washing or 
desludging procedures.  

(iv) 

The efficient aeration system also ensures that the Bioreactors produce no 
offensive odours, unlike other biological treatment plants. 

  
Solids are produced in all biological degradation processes due to the development of the 
bacterial biomass by absorption of organic materials, nitrogen and phosphorus nutrients, 
micronutrients and oxygen to perform the organic degradation to carbon dioxide and water. 
During this process, which removes the organic contamination from the water, the biomass 
film thickens on the matrix and eventually this slime layer becomes too deep for nutrients and 
oxygen to penetrate right through it. At this stage, it stops producing sticky polysaccharides, 
loses its adhesion to the plastic matrix, is detached by the sheering force of the air and water 
in a sloughing process, and passes into the water stream which gravity flows out of the 
Bioreactor. These fully digested, odouress, biological solids, or dead cells, is settled in the 
settling chamber. The solids will be recycled back to the inlet and degraded like any other 
organic material, providing that sufficient biodegradation capacity and residence time has 
been built into the system. 
  
For sewage treatment, the Bioreactors need no nutrient addition or pH correction and 
chemicals are not required, hence there are no added costs or environmental problems 
associated with the use of chemicals. Primary settlement of sewage is not needed as the 
Bioreactor can take the complete waste, via pre-treatment chamber and the macerating pump, 
removing the requirement for the handling of septic solids and their costly disposal. In 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

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K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
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addition, the Bioreactor can accept all normal kitchen greases and fats in the wastewater and 
successfully degrade them, removing the requirement for a grease trap and its associated 
smells and costly emptying and disposal. The intensive bacterial activity that takes place in 
the Bioreactor ensures that pathogenic bacteria, originally present in the sewage, are 
competitively inhibited. Thus, a discharge to surface waters meets stringent quality standards. 
  
Should it be required, ultra-violet light (UV) disinfection of the discharged waters and the 
solids can be achieved in a compact flow-through unit to remove all microbiological 
contamination. Where it is permitted, chlorine disinfection of the discharged waters is an 
alternative, if required. 
  
The Bioreactor based treatment systems is designed so that the discharged water is better in 
quality than 50 mg/l BOD

5

 (biochemical oxygen demand), 50 mg/l Suspended Solids and 250 

faecal coliforms/100 ml. 
  
Due to the high de-gradative power of the JOWA BIO STP, they are much smaller than 
comparable biological degradation methods using suspended growth (rather than fixed-film) 
systems. Such systems include activated sludge, extended aeration activated sludge, and 
sequencing batch reactors (SBR). In these aerated systems, the biomass concentration cannot 
be as high as in a fixed-film system, so the aeration volume has to be much larger. As a 
consequence, the Bioreactor is much smaller than suspended growth systems and has a 
smaller footprint. This makes the JOWA BIO STP very suitable for marine use. The 
Bioreactors has a quick biological start period and is also non-sensitive to long shutdown 
periods due to continuous sludge return.  
  
In addition, because the Bioreactor is a submerged, fixed-film unit, the biomass is more stable 
and able to tolerate both hydraulic and organic shock loadings better than the alternatives. 
Low flows and loadings can, therefore, be accepted for extended periods. As a result, they are 
not susceptible to having periodic failures of wastewater degradation and should continuously 
achieve the required effluent consent levels. 
  
The high stability of the Bioreactor means that it does not need regular attention. As there are 
no sludge wasting and recycling procedures, which are required by suspended growth 
systems, there is no need for a dedicated operator. It also has a low requirement for 
maintenance and minimal spare parts usage. 
  
Location on remote sites and unattended running is possible (optional), providing that there is 
an electricity supply. All electromechanical equipment, including pumps and blowers, can be 
supplied in duplex (optional), in duty and standby configuration, with automatic switchover 
for even wear and, in the event of a failure of one of the dual units (optional), continuous 
effluent treatment is assured. 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

2  Specifications 

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Date: 080409 
Rev:  
Sign: Jim 

JOWA BIO - STP 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\manual 
delar\tech spec stp.doc 

Specification all sizes 
 
TYPE: 

STP 1 

STP 2 

STP 3 

STP 4 

STP 5 

STP 6 

Capacity: 
(At black water 
gravity system) 

10 P.E 

25 P.E 

35 P.E 

50 P.E 

75 P.E 

200 P.E 

Certified 
hydraulic load: 
(m3/d) 

0,7 1,75 

2,45 

3,5  5,25 

14 

Certified 
organic load: 
(BOD

5/day) 

0,51kg 1,29kg 1,8kg  2,57kg 3,86kg 

10,29kg 

Sterilization 
Method: 

Chlorine. (Std) 

UV light. (option)  

Ambient 
temperature: 

5-45

°C 

Operation 
pressure: 

Atmospheric pressure 

Dry COG: 

X:381,06 
Y:490,63 
Z:577,59 

X:398,29
Y:725,78
Z:828,11

X:395 
Y:1043 
Z:819 

X:470,77 
Y:1081 
Z:935,860

X:407 
Y:1441 
Z:817 

X:788 
Y:2346 
Z:933 

Weight 
(empty / full 
kg) 

510/ 
1050 
 

792/ 
2172 

965/ 
2965 

1126/ 
3976 

1435/ 
5672 

2450/ 
13203 

Power supply: 

3 X 380  -  480 VAC / 50 / 60 Hz (Std. power supply) 

Other as option. 

Power 
consumption: 

4,1 kW

 

Protection 
class: 

IP54 

Air supply: 

4-6 Bar (instrument air) 

Alarm: 

Relay output, normally open/closed 

Tank material: 

Mild steel (stainless steel is option) 

Painting: Acc. 

to 

Internationals paint spec. 

Dimension: 

Refer to chapter 8. MECHANICAL GA DRAWINGS 

External pipe 
connection: 

Refer to P&I Diagram Chapter 7 and MECHANICAL GA 
DRAWINGS chapter 8. 

 

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Date: 080409 
Rev:  
Sign: Jim 

JOWA BIO - STP 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\manual 
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BLOWER:  

STP 1  STP 2  STP 3  STP 4  STP 5  STP 6 

Type: Becker 

DT 4.10 

Becker 
DT 4.10 

Becker 
DT 4.25 

Becker 
DT 4.25 

Becker 
DT 4.25 

Becker 
DT 4.40 

Inlet capacity: 

10-12 
m3/h 

10-12 
m3/h 

25-30 
m3/h 

25-30 
m3/h 

25-30 
m3/h 

40-48 
m3/h 

Pressure: 1000 

mbar. 

Voltage: 175-520 

VAC 

175-520 
VAC 

190-500 
VAC 

190-500 
VAC 

190-500 
VAC 

190-500 
VAC 

Frequency: 

50 / 60 Hz 3 phase 

Power 
Consumption: 

0,37-
0,45 kW 

0,37-
0,45 kW 

1,1-1,3 
kW  

1,1-1,3 
kW 

1,1-1,3 
kW  

1,9-2,2 
kW 

Current: 1,33-

2,35 A 

1,33-
2,35 A 

2,8-6,2 

2,8-6,2 

2,8-6,2 

4,5-10 

R.P.M 1420-

1700 

1420-
1700 

1420-
1690 

1420-
1690 

1420-
1690 

1420-
1690 

Protection 

class:  IP54 IP54 IP55 IP55 IP55 IP55 

Macerating 
pump:
 

 

Type: 

Zenit. GRS 100/2/G40H AOCT 

H: 18M 

Q: 1L/S 

Voltage: 460 

VAC 

Frequency: 

60 Hz 3 phase 

Power 
Consumption: 

0,9kW 

 

Current: 1,99 

R.P.M 3480 

Protection class: 
 

IP68 

 
 
 

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Date: 080409 
Rev:  
Sign: Jim 

JOWA BIO - STP 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\manual 
delar\tech spec stp.doc 

 
 
 

Discharge 
pump:
 

STP 1  STP 2  STP 3  STP 4  STP 5  STP 6 

Type: 

Herborner 4/HK50-1-120-F-WI 

H: 18M 

Q: 24m3/h 

Voltage: 380-690 

VAC 

Frequency: 

50 / 60 Hz 3 phase 

Power 
Consumption: 

3-3,6kW 

 

Current: 3,75-6,5 

R.P.M 2840-3470 

Protection class: 

IP55 

Dosing pump: 

 

Type:  

IWAKI. ES-B15VC-3 

Max capacity: 

3,9L/h 

Max pressure: 

0,7mpa 

Stroke rate:  

0-360 SPM 

Voltage: 230 

VAC 

Frequency: 

50 Hz single phase 

Power 
Consumption: 

16 W 

 

Current: 0,5 

A

 

                                                                                                                                                     
 

background image

Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

3  Installation instructions 

 
3.1  Delivery 
By deliverance this JOWA BIO STP Sewage Treatment Plant is tested and controlled. 
 
3.2  JOWA BIO STP location 
Locate the unit so there is enough space around it for maintenance and service, on top of the 
tank it should be at least 500 mm to dismount the tank cover.  
Mount the unit sufficiently by bolts or welding. 
 
3.3  External pipe connections 
The sewage treatment plant has the following external connections, which should be 
connected to the vessels piping systems. We refer to 

P&I Diagram, chapter 7

 and 

GA 

drawings, chapter 8

 for more info. All pipes have flange connections.  

 

3.3.1  Black, grey and galley water inlet 
Location  

Bioreactor, 

 

Pipe dimension 

DN100 

Standard  

DIN 

PN16 

Nos. of inlets  

1 off 

 

3.3.2  Grey water inlet (For system with black water treatment only) 
Location  

Outlet 

chamber 

Pipe dimension 

DN50 

Standard  

DIN 

PN16 

Nos. of inlets  

1 off 

 

3.3.3  Ventilation (to be connected to funnel) 
Location 

 

Bioreactor and settling chamber 

Pipe dimension 

DN65 

Standard  

DIN 

PN16 

Nos. of inlets  

1 off 

 
3.3.4  Discharge 
Location 

 

After the UV or the discharge pump 

Pipe dimension 

DN50 

Standard  

DIN 

PN16 

Nos. of inlets  

1 off 

 

IMPORTANT! 
If the discharge point is below the tank top, a swan neck must be installed and 
its top should be at least 400 mm above the tank top. 

 

3.3.5  Overflow (Not included, to be installed by yard) 
Location 

Direct to bilge tank or other dedicated tank. Install max. 400 mm 
above tank top!   

Pipe dimension 

DN50 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

3.4  Electric connections 
The electric power supply is 3 x 400 VAC / 50 Hz and it should be connected to the main 
switch and ground in the control cabinet, see specifications 

chapter 9, Electrical wiring 

diagrams

 for more information. 

For internal control a power supply of 230 VAC / 50 Hz is necessary and should be connected 
to terminal L, N and ground in the control cabinet. 
Connections between control cabinet and pumps, UV etc. refer to 

chapter 9, Electrical wiring 

diagrams

 
3.5  Ext. alarm connection 
The external alarm has a normally closed contact or a normally open contact. 
For more info we refer to 

chapter 9, Electrical-wiring diagrams

 
3.6  External valves installed by yard (Not included) 
The following valves to be installed by the Yard/Customer: 

•  Black, grey and galley water inlet 

1 off sluice valve per inlet.  

 
3.7  Vacuum system 
If the sewage treatment plant is connected to a vacuum system, see separate instructions from 
the Supplier. 
 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

4  Operations 

For easy understanding please see 

chapter 7, P&I Diagram and valve designation list

 and 

chapter 9, Electrical-wiring diagram

4.1  Start up 

•  Close valves V02 (Settling tank), V03 (Bioreactor), V50 (Bioreactor drain cock) and 

V51 (Discharge chamber drain cock). 

•  Open valve V01 (Discharge) and V05 (UV bypass). 
•  Fill up the unit with water.  
•  Open all valves between the water outlet and the overboard. 
•  Turn the main switch in position “ON”. 
•  Turn the switch S0 in position start. 
•  Turn the switch S1 in position Manual. 
•  Turn the switch S2 to start the discharge pump and check that the motor has the 

correct rotation. 

•  Turn the switch S3 to start the macerating pump and check that the motor has the 

correct rotation. 

•  Turn the switch S4 and start the Air blower and check that the motor has the correct 

rotation.  

•  Turn the switch S1 in position “AUTO”. 

 
4.2  Normal operation 

•  The valves V02 (Settling tank), V03 (Bioreactor), V50 (Bioreactor drain cock) and 

V51 (Discharge chamber drain cock) should be closed. 

•  The valves V01 (Discharge) and V05 (UV bypass) should be opened. 
•  All valves between the water outlet and the overboard must be open. 
•  The main switch in position “ON”. 
•  The switch S1 in position “AUTO”. 

 
Under normal operation are the P01 (macerating pump) and P03 (air blower) running 
constantly. The level switches control the pump P02 (discharge pump); the discharge pump 
starts when LS02 (high level) is indicated and stops when LS01 (low level) is indicated. 
The solenoid valve V30 opens once every hour for 2 min, when the valves opens it will start 
the solids airlift from the settling tank back to bioreactor. 
 
4.3   Normal operation with sterilisation of the discharge water 
Follow the points above in chapter 5.2 and turn the switch S6 to “Chemical dosing” or “UV 
sterilisation” 
 
4.3.1  Start up of sterilisation with chemical dosing (optional) 
The producer prior to the delivery adjusts the metering pump do not change the adjustments.  

•  Fill the plastic chemical container with the sterilisation chemical. 
•  Turn the switch S6 to the position “Chemical dosing” 

The metering pump starts after every discharge when the level switch LS01 (low level) is 
indicated.  The metering pump adds sufficient amount of chemicals for sterilisation of a full 
discharge chamber.   

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
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4.3.2  Start up of sterilisation with UV light (optional) 
For detailed information regarding the operation of the UV please read the JOWA UV 
manual, chapter 14. Note that this UV is not supplied with a solenoid valve.  

•  Open valves V04 UV inlet. 
•  Close valve V10 (UV bypass). 
•  Fill up the chamber via manually running of the discharge pump. De-air the UV via 

the valve V07. 

•  Turn on the main power on the UV control cabinet. 
•  Turn the switch S6 on the main control cabinet to the position “UV sterilisation”. 

Note! Never run the UV without water in the UV chamber, this can destroy the UV lamps. 
4.4  Discharge of bioreactor and settling tank 
Never discharge sewage and sludge when the ship is in harbour or in a restricted area. This 
has to be done when the ship is in an unrestricted zone or to shore facilities via the Marpol 
flange 
To empty the bioreactor and the settling tank, proceed as follows: 

•  Set the switch S1 into “Manual”. 
•  Close valve V01 and if the unit is supplied with a UV close also VO4. 
•  Open valve V02 (settling tank), V03 (bioreactor tank) and V05. 
•  Turn the switch S4 to start the Discharge pump. 
•  Make the reverse of the points above before the start of filling up the plant. 

 
The degradation process in this plant is done mostly on the submerged plastic matrix on 
which the degrading bacterial biomass adheres and rapidly grows. When the bioreactor tank is 
emptied, there is therefore no total loss of the degradation process. The plant will work 
normal just after a few hours after it has been filled again. 
 
4.5  Maintenance 
4.5.1  Daily inspections 
 

•  Check that there are no alarm indications. 

 
4.5.2  Weekly inspection 
 

•  Check the sludge return from the settling chamber to the inlet through the plastic hose. 

The manufacturer pre set this airlift of the solids to once every hour for 2 minutes.  

o

  If there is still sludge in the water from the settling chamber, increase the 

opening time with further 2 minutes of the solenoid valve V30, by changing 
the time T2 in the PLC (Please check the PLC manual for information of how 
to do this). The amount of sludge build up varies from time to time and from 
ship to ship. 

o

  If there is no water or sludge the airlift pipe or hose can be clogged. Clean the 

pipe and hose with fresh water and check the airlift again.    

•  Check if there is or have been any leakage, in pipe, hose or tank connections.  
•  If the plant is supplied with a chemical dosing system, check that the chemical tank 

has a sufficient amount liquid.   If liquid is to be added, ensure that; 

ƒ  Gloves and safety goggles are used. 
ƒ  If any spilling of chemicals, wash away by using water. 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
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ƒ  If chemicals come in contact with skin, follow instructions in Safety 

and Health Data Sheets. 

•  If the plant has duplicate Pumps, Air blowers etc. Change the stand by pump to 

service pump, to get balance the running time. 

 

4.5.3  Monthly inspection 
 

•  When a UV steriliser is installed the chamber needs to be cleaned. Follow the steps in 

the 

UV Manual (chapter 5.1), chapter 14.

 

•  Check the sludge content in the bioreactor. 

o

  Fill an Imhof conical glass 0 – 1000 ml with 1000 ml sample from the test 

cock V50. 

o

  Leave the Imhof conical glass still for 30 minutes to let the sludge to settle. 

o

  After 30 minutes check the level of sludge content. 

o

  If the reading is below 500 ml the system is OK. 

o

  If the reading is above 500 ml there is too much of sludge in the bioreactor, the 

bioreactor needs to be emptied next time the ship is in an unrestricted zone. 
Follow the steps in chapter 5.4.   

 

4.5.4  Annual inspection 
 
Due to the build up of mineral sludge, the bioreactor needs to be emptied once every year. 
This has to be done when the ship is in an unrestricted zone or to shore facilities via the 
Marpol flange. Never discharge sludge when the ship is in harbour or in a restricted area.  
Follow the steps in chapter 5.4. 

•  When the bioreactor and the settling chamber are empty following can be done: 

o

  Control the inner paint system. 

o

  Control the diffusers, unscrew them and check if the membrane is all right. 

They should be tightly fitted in both ends of the pipe.   

 

4.5.5  Sewage treatment plant accessories maintenance 

 
All the STP accessories needs different maintenance, read about their requirements in the 
enclosed manuals.   
 
 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

5  Troubleshooting 

The alarm indication lamp on the front of the control cabinet and the external alarm output is 
affected by the high level alarm and if an over-current relays that have released. Open the 
control cabinet and check the display on the PLC what have caused the alarm. 
 

 

Inside control cabinet there is four glass fuses 5x20mm. Each fuse relate to it’s specific unit 
as list below: 
 
 F1-F2: 

 1A: 

Transformer 

TR1 

 

F3-F4: 

 

1A: Internal manoeuvre voltage 220 VAC 

 
The over current relays are adjusted as follows: 
 
 Q01: 

 A: 

Macerating 

pump 

 Q02: 

 A: 

Discharge 

pump 

 Q03: 

 A: 

Air 

blower 

 
Procedure to reset: Open the control cabinet door and look visually at the Q01-Q03 and see 
which of the over-current relay that is released, reset by push reset button. Check also if any 
phase is missing by control the related terminals.  
 
It could also be high level alarm in the unit, check what have caused the overflow in the 
system.  
 
If there is failure in specific units mounted on the skid. Consult the table of contents for each 
unit’s specific manual in the binder. 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

6  P&I Diagram 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

7  Mechanical GA drawings 

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A-A 

1

1

2

2

3

3

4

4

5

5

6

6

A

A

B

B

C

C

D

D

CHECK

REV

APPR.

DRAWN

FILE NAME

SIZE

ID NO

MODEL ID

SCALE

JOWA AB

TULEBO 865

Göteborg-SWEDEN

Teleph. +46 31 795 00 40

jowa bio stp2.iam

A3

Per Blad

 

 

#2 080206 ES

26-0002-01-

 

26-0002-01-

2003-02-10
 
 

GA

JOWA BIO STP 2

 

01

A

A

16

09

1475

850

124

20

0

34

6

1605

15

0

35

0

130

150

315

834

42

5

60

0

11

84

28

4

48

3

2

11

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1

1

2

2

3

3

4

4

5

5

6

6

A

A

B

B

C

C

D

D

CHECK

REV

APPR.

DRAWN

FILE NAME

SIZE

ID NO

MODEL ID

SCALE

JOWA AB

TULEBO 865

Göteborg-SWEDEN

Teleph. +46 31 795 00 40

jowa bio stp2.iam

A3

Per Blad

 

 

#2 080206 ES

26-0002-01-

 

26-0002-01-

2003-02-10
 
 

ISO

JOWA BIO STP 2

SINGLE DISCHARGE & AIR BLOWER

02

26001-00006

1.721 kg

PVC

DOSAGE PUMP 

1

33

26-0002-01-09

1.500 kg

PP

SETTLING LAMELLAS STP 2

1

12

26-0002-01-10

5.000 kg

PP

BIOREACTOR MATRIX STP 2

1

11

26001-00004

36.500 kg

 

AIR BLOWER DT 4.25

1

10

20054-25252

0.5 kg

PP

CONTAINER 25L

1

9

26001-00007

0.2 kg

BRASS

DRAIN COCK

1

8

26001-00008

5.530 kg

 

Ball Valve DN50

3

6

26000-00201

15.0 kg

 

CONTROL CABINET

1

5

26001-00001

49 kg

GG-25

DISCHARGE PUMP

1

4

26001-00002

21.120 kg

GG-25

MACERATING PUMP

1

3

26-0002-01-27

1.057 kg

 

DIFUSOR

2

2

26000-20120

665.012 kg

S235

JOWA BIO TANK STP2

1

1

ID NUMBER

MASS

MTRL

DESCRIPTION

QT

ITE

GRAVITY WATER INLET DN100

VACUUM WATER INLET DN50

HOSPITAL WATER INLET DN50

VENTILATION DN65

GREY WATER FOR STERILISATION ONLY INLET DN50

DISCHARGE DN50

INSTRUMENT AIR INLET

5

10

1

8

6

4

9

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

8  Electrical wiring diagrams 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

9  Discharge pump 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

10 Macerating Pump 

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General

Available 

Options

Liquids - 

Dest. Market

Curve - 

Graphs

Dimensions

 

GRS 100/2/

General Product Information
Impeller Type:

High head impeller and grinder on

Motor Power:

0.9 kW

Motor Revolutions:

2900 1/min

Diameter of Outlet:

1 ½" horizontal gas threaded open

Motor Phases:

Three-phase

Explosion-proof 
Product:

Pump in NOT ex-proof version

Exploded drawing

Explain Name 

Hydraulic Product Information

Max. Head: 20 m

Max. Capacity: 4 l/sec

Free Passage: Not applicable

Max. Temp. of Liquid Handled: 40 °C

PH of liquid handled: 6 to 10

Density of liquids handled: 1 kg/dm³

Viscosity of liquid handled: 1 mm²/s

Electrical / Motor Information 

Rated Supplied Power: 0.9 kW

Rated Absorbed Power: 1.28 kW

Rated Absorbed Current 2.05A

Starting Current: Not available 

Starting torque: Not available 

Rated Cos Ø: 0.9

Max number of start-ups/hours: 20

Service Type: S1 submersible or w/sleeve

Motor Protection: IP 68

Insulation Class: F

Winding Type: Induction motor with dry winding and automatic overload 

Impregnation Type: Doubly impregnated humidity-resistant winding

Direction of Rotation: Clockwise seen from top of electric pump

Rated yield: 70%

Number of ball bearings

installed:

Upper and lower permanently lubricated ball bearings

Lifting: With handle on motor cover

Cable type in Standard version: H07RN-F 4G1

Capacitor capacity: 0 mF

EX Certification Type:  

Nr. EX Certificate:  

Material of Manufacture

Motor Wrapping Material: EN-GJL-250 cast iron

Hydraulic Unit Mat.: EN-GJL-250 cast iron

Bolts and Screws Material: INOX A2 steel

OR Material: NBR-SBR rubber

 

Guided Search
Advanced Search
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Grinder

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Accessories Cat.

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Check Valves
Gate Valves
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Sida 1 av 2

Zenit - Products

2002-12-18

http://www.zenit.net/products/AlberoProdottiG.asp?Page=Pompe&IDArticolo=02030...

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Grinder Material: X102CrNiMo17Ku steel

Motor Shaft Material: X30Cr13 (AISI420) steel 

Cooling jacket Material: Not applicable

General / Commercial Information

Motor Wrapping Material: EN-GJL-250 cast iron

Hydraulic Unit Mat.: EN-GJL-250 cast iron

Bolts and Screws Material: INOX A2 steel

OR Material: NBR-SBR rubber

Grinder Material: X102CrNiMo17Ku steel

Reference standards

EN 292-1; EN 292-2; CEI EN 60529; ISO 9906; CEI EN 60034-1.
CEI EN 60204; UNI ISO 6009; UNI EN 1561-1563; UNI EN 10098.
Low voltage directive 73/23/CEE.
Procedures specified by Zenit S.p.a. Quality System, UNI EN ISO 9001 (ISO 9001) certified,
certified.
Machines directive 89/392/CEE and successive amendments thereto (directives 91/368/CEE
electromagnetic compatibility directive 89/336/CEE 

 

© Zenit s.p.a. - Tutti i diritti riservati | Powered by Apex

 

Sida 2 av 2

Zenit - Products

2002-12-18

http://www.zenit.net/products/AlberoProdottiG.asp?Page=Pompe&IDArticolo=02030...

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1

HANDLE 

2

CABLE

3

CABLE CLAMP PLUG

 

4

CABLE GLAND

5

RUBBER GASKET

 

6

MOTOR COVER

7

BEARING SUPPORT

 

8

UPPER BALL BEARING

 

9

SHAFT WITH ROTOR

 

10 O-RING
11 WINDING
12 STATOR
13 MOTOR CASE
14 LOWER BEARING HOLDER

 

15 O-RING 
16 SUPPORT WASHER

 

17 SEEGER
18 LOWER BALL BEARING

 

19 LIP SEAL
20 O-RING
21 SEALING FLANGE

 

22 SEEGER
23 SEEGER
24 GASKET
25 MECHANICAL SEAL

 

26 O-RING
27 INTERMEDIATE SUPPORT

 

28 PUMP BODY
29 IMPELLER
30 KEY 
31 FOOT BASE SUPPORT

 

32 REGISTERING GRUB SCREW

 

33 CUTTING DISK
34 CUTTER
35 BOX NUT
36 IMPELLER BUSH

 

37 STRAINER
38 WASHER

  
  

Sida 1 av 1

Famiglia Dreno

2002-12-18

http://www.zenit.net/html/Esplosi/EN/Esploso28.htm

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

11 Metering pump (Optional) 

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Read this manual before use of product

IWAKI

Electromagnetic Metering Pump

ES Type

Instruction Manual

T324-2  02/06

(   )Country codes

IWAKI CO.,LTD. 6-6 Kanda-Sudacho 2-chome Chiyoda-ku Tokyo 101-8558 Japan

TEL:(81)3 3254 2935 FAX:3 3252 8892(http://www.iwakipumps.jp)

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 : (49)2154 9254 0 FAX : 2154 1028
TEL : (39)02 990 3931 FAX : 02 990 42888
TEL : (45)48 24 2345

FAX : 48 24 2346

TEL : (46)8 511 72900 FAX : 8 511 72922
TEL : (358)9 2742714

FAX : 9 2742715

TEL : (47)66 81 16 60

FAX : 66 81 16 61

TEL : (33)1 69 63 33 70 FAX : 1 64 49 92 73
TEL : (44)1743 231363 FAX : 1743 366507
TEL : (41)32 3235024

FAX : 32 3226084

TEL : (43)2236 33469

FAX : 2236 33469

TEL : (31)297 241121

FAX : 297 273902

TEL : (34)943 630030

FAX : 943 628799

TEL : (32)1430 7007

FAX : 1430 7008

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 : (1)508 429 1440 FAX : 508 429 1386
TEL : (61)2 9899 2411 FAX : 2 9899 2421
TEL : (65)763 2744

FAX : 763 2372

TEL : (62)21 690 6607 FAX : 21 690 6612
TEL : (60)3 7803 8807 FAX : 3 7803 4800
TEL : (886)2 8227 6900 FAX : 2 8227 6818
TEL : (66)2 320 1303

FAX : 2 322 2477

TEL : (852)2 607 1168 FAX : 2 607 1000
TEL : (86)20 8130 0605 FAX : 20 8130 0601
TEL : (86)10 6442 7713 FAX : 10 6442 7712
TEL : (86)21 6272 7502 FAX : 21 6272 6929
TEL : (63)2 888 0245

FAX : 2 843 3096

TEL : (82)2 3474 0523 FAX : 2 3474 0221

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Thank you for choosing an Iwaki s ES Series pump. This instruction manual deals with the correct 
installation, operation, maintenance, and troubleshooting procedures for the ES model pump. Please 
read through it carefully to ensure the optimum performance, safety and service of your pump. 

 
 

TABLE OF CONTENTS       

 
IMPORTANT INSTRUCTION 

------------------------------------------1  

    Safety Section 

------------------------------------------1  

 
1.0 INTRODUCTION ------------------------------------------5 
 1.1 

Welcome 

------------------------------------------5  

 

1.2 

Safety and Caution Notes 

------------------------------------------5  

 1.3 

Principle 

of 

Operation 

------------------------------------------5  

 1.4 

Specifications 

------------------------------------------6  

 
2.0 INSTALLTION 

------------------------------------------7 

 2.1 

Unpacking 

------------------------------------------7  

 2.2 

Location 

------------------------------------------7  

 2.3 

Supply 

Tubing 

------------------------------------------8  

 2.4 

Discharge 

Tubing 

------------------------------------------8  

 2.5 

Electrical 

------------------------------------------8  

 

3.

0 OPERATION 

------------------------------------------9 

 3.1 Priming 

 

------------------------------------------9 

 3.2 Adjustment 

------------------------------------------9 

 

3.3 

Calibration 

  ----------------------------------------10 

 

4.

0 MAINTENANCE 

----------------------------------------11  

 4.1 Diaphragm 

Replacement 

----------------------------------------11  

 4.2 Valve 

Replacement 

----------------------------------------11  

 4.4 Consumable 

parts 

----------------------------------------11  

 

5.

0 Troubleshooting 

----------------------------------------12  

 

6.

0 Model Code & Exploded View  ----------------------------------------13  

 6.1 Model 

Code 

----------------------------------------13  

 6.2 Dimensions 

----------------------------------------14  

 6.3 Exploded 

View 

----------------------------------------15  

4.3 Tubing 

----------------------------------------11  

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-

-

 

Important Instruction

¡

Read the "Safety Instructions" sections carefully to prevent accidents involving you 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. 

For the Safe and Correct Handling of the Pump

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-

-

 

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 
IWAKI .  

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 complete water-proof or dust – proof. The use 
of the pump in places where water splashes or humidity is high may result in an 

Prohibited

 

electrical shock or short circuit. 

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-

-

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 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 

 

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 lode 
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 

spillage or leakage.

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-

4

-

 

Safety Section

  Caution.

 

 

¡

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

°

C or higher) or

extremely low (0

°

C 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.)

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-

5

-

 

1.0 Introduction 

 
1.1 Welcome 

Thank you for choosing an IWAKI ES Series metering pump.  This instruction manual 
deals with the correct installation, operation, maintenance and troubleshooting 
procedures for the ES model metering pumps. Please read through it carefully to 
ensure the optimum performance, safety and service of your pump. 

1.2 Safety 

and 

Caution 

Notes 

Avoid areas where ambient temperature exceeds 40

°

C or falls below 0

°

C, or where 

the pump or tubing would be exposed to direct sunlight. 

Disconnect the pump from electrical power source before performing any 
maintenance. 

When working on or around a metering pump, always wear proper protective 
clothing and equipment as recommended by the supplier of the liquid being pumped. 

Depressurize the discharge tubing before disconnecting the tubing or performing any 
maintenance on the pump. 

1.3 Principle 

of 

Operation 

The ES 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 
through 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. 

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6

-

 

1.0 Introduction 

1.4 Specifications 

Capacity/Pressure Rating 

 

Size 

Maximum Output 

Capacity 

(L/hr) (ml/min) 

Output Per   

 Stroke  (ml) 

Connection 

Size 

Tubing (mm) 

B10 2.28  38 

0.11 

1.0

 

φ

4 x  6 

B15 3.9  65 

0.18 

0.7  

φ

4 x  6 

B20 5.7  95 

0.26 

0.4  

φ

4 x  6 

B30 12.0  200 

0.56 

0.2  

 

φ

φ

φ

φ

φ

9 x  12 

Adjustment Range 
    Recommended frequency adjustment range 

0 to 360 strokes per minute 

Materials of Construction 

Liquid End 

Code 

Pump Head 

& Fitting 

Diaphragm 

Valve 

Ball 

Valve 

Seat 

O-Ring Gasket 

VC PVC 

PTFE 

(bonded to EPDM) 

CE FKM FKM  PTFE 

CE Ceramic 

EPDM 

: Alumina 
: Polytetrafluoroethylene 
: Polyvinylchloride 

Ethylene propylene diene monomer 

PTFE FKM 

Fluoroelastmer 

PVC (translucent) 

Electrical 

ESB-N3 230 

VAC 

±

 10% 0.3 Amp max.    16 watt avg. 

50 Hz, single phase 

Operating Conditions 

Ambient temperature 

0

°

C to 40

°

Relative humidity 

35% to 90% non-condensing 

Maximum

Pressure

MPa

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7

-

 

2.0 Installation 

2.1 Unpacking 

Open the shipping carton and inspect contents for damage.    If any items are 
missing or damaged contact your local distributor to arrange for replacement. 

2.2 Location 

Choose a location for the pump which is clean, dry, close to an electrical outlet, and 
allows convenient access to frequency control and tubing connections.    Avoid areas 
where ambient temperature exceeds 40

°

C or falls below 0

°

C, 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 case, the total suction lift should not exceed    (1.0 m). 

Figure 1 

Figure 2 

Figure 3 

Flooded Suction  

Shelf Mount 

Tank Mount  

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8

-

 

2.0 Installation 

2.3 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 from the coil supplied 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 PVC pipe will help to 
keep tubing straight. 

2.4 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. Install a check valve (optionally available) 
at the injection point and connect the discharge tubing to the check valve. 
 

Caution. 

Any check valve using Hastelloy or other metal springs in liquid end is not 
usable for chemicals (such as HCL) which corrode the Hastelloy or other 
metal springs. Ask IWAKI for a special check valve for this application. 

2.5 Electrical 

Connect the pump power cord to a GROUNDED outlet supplying proper voltage.   
Avoid branch circuits that also supply power to heavy machinery or other equipment 
that could generate electrical interference. 

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9

-

3.0 Operation 

Caution. 

¡

Do not operate the pump with a completely closed discharge-side 
valve. 
Operating the pump with the discharge-side valve fully closed may 
lead to liquid leakage or pipe rupture. Make sure not to operate the 
pump with the discharge-side valve closed. 

¡

Do not run the pump dry. 
A pump, which has been run dry, may experience liquid leakage during 
its liquid feeding operation. Make it a rule to run the pump after 
supplying liquid inside the pump. 
* Dry operation of the pump over a long time (longer than 30 minutes) 
  causes the pump to overheat and the pump unit (pump head, valve   
  guide etc.) to become deformed or the pump head attachment to 
  become loose, which may result in liquid leakage trouble. 

¡

Keep the pump head firmly assembled. 
If the installation bolts on the pump head are loosened, liquid leakage 
may result. 
* Fasten the 4 hex. socket bolts tightly before starting the initial pump 
  operation. (The bolts may be loosened during storage or   
  transportation of the pump, depending upon the condition of each.) 
* Fastening torque: 2.16 N• m    
  Tighten all the bolts fully by applying an equal amount of torque in a   
  diagonal order among the bolts. 

3.1 Priming 

Install the pump as described above.    With the pump turned on, set frequency at 
100%.    If the pump is equipped with an air vent valve, open the knob 1/2 turn. 
Liquid should move through the suction tubing and into the pump head.    When 
liquid starts running through the vent tubing, close the air vent knob and continue 
with output adjustment described below.    If the pump has no air vent valve, 
disconnect the discharge tubing from the injection valve.    When liquid enters the 
discharge tubing at the pump head, set frequency to 0% to stop the pump and 
reconnect the discharge tubing to the injection valve. 

3.2 Adjustment 

If less than full output is required, set the frequency to the approximate percentage 
of maximum desired.     

3.3 Calibration 

I

If exact output calibration is required, first prime and adjust the pump as above. 

Then connect a calibration column to the suction side of the pump.    Turn  the pump 
on for one minute and read the amount of liquid pumped from the column.    Adjust 
the frequency up or down as necessary and check the output again.   When the

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10

-

desired output is reached, disconnect the calibration column and reconnect the 
suction tubing. (See Figure 4.) 

Figure 4 

 Calibration 

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-

11 

-

 

 

4.0 Maintenance 

 

Caution:    Before working on the pump, disconnect the power 
cord, depressurize the discharge tubing and drain or flush any 
residual liquid for the pump head and valves. 

 
4.1 Diaphragm 

Replacement 

 

Remove the power cord from the electrical outlet and disconnect the suction tubing, 
discharge tubing, and air vent tubing.    Remove the four head bolts with a 4mm or 
5mm hex wrench.    Unscrew the diaphragm and remove its retainer (small disk 
behind the diaphragm).    Install the new retainer and diaphragm on the shaft.    Turn 
the diaphragm clockwise until it bottoms on the shaft.    Replace the pump head and 
tighten the head bolts to a torque of 2.16 N-m. 

 
4.2 Valve 

Replacement 

 

Remove the suction and discharge tubing.    Remove the suction fitting, the valve 
ass y (consists of 2 x valve ball, 2 x valve seat, 2 x valve guide, 1 x gasket & 1 x 
o-ring). Install the new valve ass y.    Be sure both valve seats are in the same 
orientation. Refer to Figure 5, below.    Tighten the suction fitting.    Similarly remove 
and replace the discharge valve ass y.   

Figure 5 

Valve Ass y Orientation 

4.3 Tubing 

Check ends of tubing for splits, cracks or thin spots.    Examine the full length of 
tubing for damage due to chafing, abrasion, stress cracks, excessive temperature or 
exposure to ultraviolet light (direct sunlight or mercury vapor lamps).    If any signs of 
deterioration exist, replace the entire length of tubing.    It is a good idea to replace 

FLOW

Valve Guide

Ball

Valve Seat

Gasket

discharge tubing on a regular preventive maintenance schedule every 12 months.

Part

Qty.

Replacement

Timing

Valve set

Diaphragm

2 sets

1

Approx.

8,000 hrs.

4.4 Consumable 

parts 

The durability of expendable parts depends on the pressure, temperature, and 
properties of the liquid handled. The value in the above table is obtained from a 
continuous run of the pump using clean water at ambient temperature. Take the value
as a guideline for replacement.

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12

-

5.0 Troubleshooting 

Caution:    Before Working on the pump disconnect the power cord, 
depressurize the discharge tubing and drain or flush any residual 
liquid from the pump head and valves. 

Problem 

Possible Cause

Corrective Action

- Faulty wiring 

- Correct wiring 

- Improper voltage 

- Connect to proper voltage source

Pump does not 
start 

- Electronic control unit is 
 damaged 

- Replace control unit 

- Air in suction tubing 

- Reroute suction tubing to   
 eliminate air trap 

- Valve  gasket is not installed 

- Install valve gasket 

- Valve  ass’y direction is wrong. 

- Reassemble valve ass’y 

- Pump is air locked 

- Open air vent valve 

- Suction or discharge valve is   
 clogged with foreign matter 

- Disassemble, inspect, clean 

Pump does not 
prime 

- Adhesion of valve onto valve 
 seat 

- Disassemble, inspect, clean 

- Suction or discharge valve is 
 clogged with foreign matter 

- Disassemble, inspect, clean 

- Air is trapped in pump 

- Open air vent valve 

- Overfeeding 

- Install injection valve or back   
 pressure valve 

Output fluctuates 

- Diaphragm is damaged 

- Replace diaphragm 

- Fitting or coupling nut is loose 

- Tighten 

- Pump head is loose 

- Tighten pump head bolts 
- Torque:  2.16 N-m 

- Diaphragm is damaged 

- Replace diaphragm 

Liquid leaks 

- O-ring or valve gasket missing 

- Install o-ring or valve gasket 

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13 

-

6.0  Model Code, Dimensions &  Exploded View

6.1 Model 

Code 

ES – B15 VC N – 3 

q

w

e r

t

q

: Pump 

Series 

ES : 

Electronic metering pump with manual speed control   
(adjustable to 360 strokes per minute) 

w

 :  Capacity/Pressure Rating 

 

Size 

Maximum Output 

Capacity 

(L/hr) (ml/min) 

Output 

Per Stroke (ml) 

 

Connection 

Size 

Tubing (mm) 

B10 2.28  38 

0.11 

1.0 

 

φ

 4 x 

φ

 6 

B15 3.9  65 

0.18 

0.7 

 

φ

 4 x 

φ

 6 

B20 5.7  95 

0.26 

0.4 

 

φ

 4 x 

φ

 6 

B30 12  200 

0.56 

0.2 

 

φ

9 x 

φ

 12 

e

: Liquid End 

 

Liquid End 

Code 

Pump Head 

& Fitting 

Diaphragm 

Valve 

Ball 

Valve 

Seat 

O-Ring Gasket

VC PVC 

PTFE 

(bonded to EPDM)

CE FKM FKM PTFE 

r

: Control Module 

N: 

For all ES-B models with plug, Fixed stroke length only. 

t

: Voltage 

3: 

230 VAC,  50 Hz 

Maximum

Pressure

MPa

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-

14 

-

6.0  Model Code, Dimensions & Exploded View

6.2 Dimensions 

mm]

[

 

Model 

A B C D E F G H J  L 

P&Q 

Tubing 

ES-B10VC N-3 

ES-B15VC N-3 

ES-B20VC N-3 

81.5

22 2 90 37 5 150

184

28 

175 

φ

 4 x 

φ

 6 

 

100

ES-B30VC 

N-3 

81.5

26 2 90 16 5  - 172

8 158 

φ

 9 x 

φ

 12 

 

100

Mounting Dimensions 

ES all variations 

88 

16 

32 

6.2 

10

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15

-

6.0  Model Code, Dimensions & Exploded View

 
6.3Exploded View (for B-10/15/20)
 
Models with thermoplastic liquid end materials and air vent valve 

4

4

23

26

25

10

27

5

A

B

6

14

1

11

13

12

1

11

13

12

19

17

7

9

18

1

17

14

1

11

13

12

1

11

13

12

B

3

4

D

47

44

45

46

55

56

38

42

41

39

43

48

53

52

C

ES-B30

A : Air Vent Ass y

B : Valve  Ass y

D : Control Unit

C : Drive Unit

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-

16 

-

Q’ty per Item 

Item Description  Material 

B10

B15

B20 B30 

1 Head, 

10 

 

PVC 

 

 

 

1 Head, 

15 

 

PVC 

 

 

 

1 Head, 

20 

 

PVC 

 

 

 

1 Head, 

30 

 

PVC 

 

 

 

Fitting, 

φ

 4 x 

φ

 6   

PVC 1 

 

Fitting nut, 

φ

 4 x 

φ

 6 

PVC 3 

 

Fitting, 

φ

 9 x 

φ

 12   

PVC 

 

 

 

Fitting nut, 

φ

 9 x 

φ

 12 

PVC 

 

 

 

Air vent body B 

PVC 

 

6 Lock 

nut 

PVC 

 

7 Diaphragm, 

10 PTFE+EPDM 

 

 

 

7 Diaphragm, 

15 PTFE+EPDM 

 

 

 

7 Diaphragm, 

20 PTFE+EPDM 

 

 

 

7 Diaphragm, 

30 PTFE+EPDM 

 

 

 

9 Retainer, 

10 

PPS 

 

 

 

9 Retainer, 

15 

PPS 

 

1    

9 Retainer, 

20 

PPS 

 

 

 

9 Retainer, 

30 

PPS 

 

 

 

10 

Air vent body A   

PVC 

 

11 Valve 

guide 

PVC 

12 

Valve seat, .   

FKM-A 

13 

Valve ball, . 

CE 

14 Gasket, 

 

 

PTFE 

17 O-ring, 

S14 

 

FKM 

18 Spacer:0.2,0.3,0.5,0.7mm 

Brass 

19 

Bolt, M4X34 

SUS304 equivalent 

 

19 

Bolt, M4X36 

SUS304 equivalent 

 

23 Adjusting 

Screw 

 

PVC 

 

25 O-ring, 

P4 

FKM-A 

 

26 O-ring, 

P10A 

  FKM-A 

 

27 O-ring, 

P7 

 

FKM-A 

 

38 Gasket 

EPDM 

39 Cord Gasket E 

φ

6mm 

NBR 1 

41 Cord 

Nut 

POM 

42 Case 

Gasket 

NBR 

43 

Control unit case 

PPE 

44 

Control unit cover 

PPE 

45 SF 

Gasket 

EPDM 

46 SF 

Knob 

PE 

47 

Screw 4x25 

SUS304 equivalent 

48 Terminal 

Gasket 

NBR 

53 Pump 

body 

PPG 

52 Plug 

 

55 Cap 

Gasket 

EPDM 

56 Screw, 

M3x35  SUS304 

equivalent 

 

 

 

 

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Read this manual before use of product

IWAKI

Electromagnetic Metering Pump

ES Type

Instruction Manual

T324-2  02/06

(   )Country codes

IWAKI CO.,LTD. 6-6 Kanda-Sudacho 2-chome Chiyoda-ku Tokyo 101-8558 Japan

TEL:(81)3 3254 2935 FAX:3 3252 8892(http://www.iwakipumps.jp)

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 : (49)2154 9254 0 FAX : 2154 1028
TEL : (39)02 990 3931 FAX : 02 990 42888
TEL : (45)48 24 2345

FAX : 48 24 2346

TEL : (46)8 511 72900 FAX : 8 511 72922
TEL : (358)9 2742714

FAX : 9 2742715

TEL : (47)66 81 16 60

FAX : 66 81 16 61

TEL : (33)1 69 63 33 70 FAX : 1 64 49 92 73
TEL : (44)1743 231363 FAX : 1743 366507
TEL : (41)32 3235024

FAX : 32 3226084

TEL : (43)2236 33469

FAX : 2236 33469

TEL : (31)297 241121

FAX : 297 273902

TEL : (34)943 630030

FAX : 943 628799

TEL : (32)1430 7007

FAX : 1430 7008

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 : (1)508 429 1440 FAX : 508 429 1386
TEL : (61)2 9899 2411 FAX : 2 9899 2421
TEL : (65)763 2744

FAX : 763 2372

TEL : (62)21 690 6607 FAX : 21 690 6612
TEL : (60)3 7803 8807 FAX : 3 7803 4800
TEL : (886)2 8227 6900 FAX : 2 8227 6818
TEL : (66)2 320 1303

FAX : 2 322 2477

TEL : (852)2 607 1168 FAX : 2 607 1000
TEL : (86)20 8130 0605 FAX : 20 8130 0601
TEL : (86)10 6442 7713 FAX : 10 6442 7712
TEL : (86)21 6272 7502 FAX : 21 6272 6929
TEL : (63)2 888 0245

FAX : 2 843 3096

TEL : (82)2 3474 0523 FAX : 2 3474 0221

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

12 Air blower 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

13 JOWA UV (Optional) 
 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

14 Level switches 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

15 Spare part list 

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Date: 2003-04-02 

JOWA 

Rev:   A 

BIO – STP 2 

Sign:  PB 

 

 

16 Spare part list 

 
 
 Description 

Part 

Number 

Designation 

 

 

Diffuser membrane  

26001-00009 

 

 

Pneumatic Valve, normally closed DN15  93003-15006 

V30 

 

 

Level switch JOLA SSP-3K 

27050-00001 

LS01, 02, 03 

 *  Fuse 

1A 

20600-00100  FU1 

 

 

 

 
For the Discharge pump 
 

 

Ball bearing - 27 

60000-60019 

P02 

 

 

Ball bearing - 28 

60000-60020 

P02 

   Mechanical 

Seal 

60000-60018  P02 

 

 

 

For the Air Blower 
 

 

Filter Cartridge - 72 

 

P03 

 

 

Filter Cartridge - 73 

 

P03 

 

 

Filter Cartridge - 74 

 

P03 

 

 

Carbon Vanes - 24 

 

P03 

 
For the Macerating Pump 
 

 

Ball bearing - Lower 

 

P01 

 

 

Ball bearing - Upper 

 

P01 

   Mechanical 

Seal 

 

P01 

 
For the Metering Pump 
   Injection 

nozzle 

22500-02011  P04 

   Membrane 

EH0562 

 

P04 

 

 

Double valve EH0070 

 

P04 

 
Recommended spare parts for 2 years of operation are items with an *. 
Items with an ** are consumables, and is recommended to be Included for 2 years of 
operation. 

K:\1-NYA K\1-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA Bioreactor 
STP manual STP 2.doc 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

16 Certificates 

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Date:  2008-04-09 

JOWA 

Rev:   B.080409 

BIO - STP 

Sign:  jim 

 

 

K:\1-NYA K\1.3-JOWA PROJEKT\Sewage unit\JOWA BIO STP\Manual\JOWA BIO STP 2 
manual revB.doc 

17 Vacuum system (Optional) 


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