Ole Op at Or

Operating and maintenance

instructions for

ACO light-oil separators

Oleotop

Oleomax

Oleopator

Oleopator-CCB Akkumat

Oleopator-CRB

Oleopator-PR

Oleopass

2

3

Inhaltverzeichnis

1 Introduction ................................................................. 5

1.1 General .................................................................................................... 5

1.2 Technical changes ................................................................................... 5

1.3 General symbols ...................................................................................... 6

2 Safety ................................................................. 7

2.1 Area of application ................................................................................... 7

2.2 Improper usage violating the regulations ................................................. 7

2.3 Climbing into the separator ...................................................................... 7

2.4 General safety instructions....................................................................... 8

2.5 Instructions on the installed devices......................................................... 9

2.6 Authorised operatives .............................................................................. 9

3 System description of the separator types............................................... 11

3.1 Oleomax and Oleopator ......................................................................... 11

3.2 Oleopator-CRB ...................................................................................... 13

3.3 Oleopator-CCB Akkumat........................................................................ 15

3.4 Oleopator-PR NS 80 and NS 100 .......................................................... 17

3.5 Oleopass................................................................................................ 19

4 Commissioning ............................................................... 23

4.1 General .................................................................................................. 23

4.2 Filling the separator................................................................................ 24

5 Self-checking, maintenance, disposal and inspection ............................ 27

5.1 Self-checking and maintenance work..................................................... 27

5.1.1 Self-checking by the operator ......................................................... 28

5.2 Maintenance .......................................................................................... 29

4

5.3 Checking the coalescence unit............................................................... 30

5.3.1 Type Oleomax, Oleopator-CRB NS 3 to 20, Oleopator NS 30,

Oleopass, Oleopator-CCB Akkumat.............................................................. 30

5.3.2 Type Oleopator CRB NS 30 to 50 and Oleopator NS 40 to 50........ 31

5.3.3 Type Oleopator CRB NS 65 to 100 ................................................. 32

5.3.4 Oleopator-PR .................................................................................. 33

5.3.5 General hints for cleaning ............................................................... 34

5.4 Disposal ................................................................................................. 36

6 Entering the separator ............................................................... 37

7 ACO Civil Engineering service network and ordering wear and tear parts

............................................................... 39

5

1 Introduction

1.1 General

These operating and maintenance instructions provide detailed directions for the

safe and proper operation of a separator system. The instructions are an integral

part of the separator and must be available at all times.

Important

Please read these operating and maintenance instructions carefully before com-

missioning the separator. The directions specified in these operating and mainte-

nance instructions must be strictly complied with. This is for your benefit because it

will enable you to:

• ensure that the system will operate safely

• ensure that the efficiency and cost-effectiveness of the system will be en-

hanced to your satisfaction

• ensure that faulty operation and problems are avoided

• avoid costs for repairs and shut-downs

• make a valuable contribution to environmental protection

• maintain the warranty

1.2 Technical changes

ACO Beton GmbH reserves the right to make technical changes to the separators

as described and shown in the details and pictures in these operating and mainte-

nance instructions.

6

1.3 General symbols

Special directions are included throughout the operating and maintenance instruc-

tions wherever special aspects have to be taken into consideration. These special

directions consist of a symbol, a signal word, and the accompanying text. The

general symbols used are as follows:

WARNING

This symbol accompanies all the operational safety instructions in this manual

which could be associated with a risk to human life and health. It is very important

in these cases to observe the instructions and to act cautiously. All of the opera-

tional safety instructions must be passed on to other persons operating the sys-

tem. The instructions in this manual must be observed in addition to the general

safety and accident prevention regulations.

CAUTION

This symbol highlights those positions in the instruction manual where special care

has to be taken to ensure compliance with the regulations, standards, stipulations,

instructions and the proper sequence of the work carried out, as well as where

there is a risk of damaging the system, the components and the surroundings, and

to ensure smooth operations.

ENVIRONMENTAL PROTECTION

This symbol highlights environmental protection measures.

7

2 Safety

2.1 Area of application

These instructions apply to separators for mineral light liquids. The separators are

classified as separator Class I or II pursuant to EN 858. The separator tank con-

sists of reinforced concrete. It is designed for ground installation.

2.2 Improper usage violating the regulations

The regulations governing the use of the separator are considered to have been

violated when the plant is not used or connected in accordance with the descrip-

tions defined in EN 858.

The manufacturer is not liable for any damage arising from improper use which

violates the regulations.

It is forbidden to make unauthorised changes or modifications to the plant, and

such actions lead to the immediate termination of the warranty rights!

Caution ENVIRONMENTAL PROTECTION

Problem-free operation and compliance with the safety regulations can only be

guaranteed by the installation when it complies one hundred per cent with the

model as produced by the manufacturer.

2.3 Climbing into the separator

WARNING

Climbing into the separator is only permitted when observing all of the relevant ac-

cident protection regulations in your country at the time planned for entry.

8

2.4 General safety instructions

WARNING

The safety instructions must be strictly implemented. Failure to follow the instruc-

tions properly can lead to material damage or injury.

WARNING

The separator system is defined as a zone 0 explosion hazard area. Only author-

ised properly trained staff are therefore allowed to carry out work on the electrical

components of the separator (where present).

WARNING

No one must be allowed to enter the separator without breathing apparatus or be-

fore previously testing the gas concentrations, and nobody must be allowed to en-

ter the separator without safety equipment (see the relevant accident prevention

regulations in your country).

WARNING

Smoking and naked lights are strictly forbidden anywhere in the area surrounding

the system.

CAUTION

Adhesive safety instruction labels must be replaced if they become detached or

illegible.

9

2.5 Instructions on the installed devices

CAUTION

The installed devices (e.g. inlet structure, outlet structure, coalescence element,

etc.) are designed for operation within a separator system. They must not be mis-

used as steps for operatives or as resting places for heavy cleaning equipment

etc. They are not designed to carry loads of this kind!

WARNING

Stepping onto any of the installed devices carries with it a risk of falling, especially

by the breakage of the installation device, because the strength of the installation

devices is not designed to carry the weight of operatives.

2.6 Authorised operatives

The system must only be operated and maintained by “properly qualified operati-

ves or properly qualified technicians”.

The operator is obliged:

• to make an operating manual available to the operator (supplied separately

or available upon request from your ACO service partner), as well as these

operating and maintenance instructions. The handing over of these instruc-

tions and manual must be recorded pursuant to the mandatory stipulations.

The operator must satisfy himself that the operatives have read and under-

stood these instructions

• to ensure that the plant operatives have been properly instructed and can

operate the plant safely

10

11

3 System description of the separator types

The following provides a short system description and important instructions for

each of the different separator types.

3.1 Oleomax and Oleopator

Fig. 1. Light-oil separator Oleomax and Oleopator Class I, and light-oil separator

Oleomax and Oleopator Class II (identical to Oleomax and Oleopator Class I, but

without the coalescence element (2))

1 Inlet pipe to the separator 2 Coalescence unit (knitted wire mesh or perforated metal sheet or polyure-

thane material) 3 Outlet pipe with float cage 4 Reinforced concrete tank 5 Integrated sludge trap

1 2

4

5

12

General description of the Oleomax and Oleopator light-oil separators

Oleomax and Oleopator Class I and Class II light-oil separators have an integrated

sludge trap (5). This allows sediments and light oils to be separated out simulta-

neously in one tank. This means that an additional sludge trap positioned up-

stream of the light-oil separator is no longer required.

The Oleomax light-oil separator has an optimised sludge trap according to the

German DIN 1999-100 compared to the Oleopator light-oil separator. The Oleo-

max light-oil separator is therefore particularly compact. Oleomax and Oleopator

light-oil separators are identical in all other respects.

Function of Class I light-oil separators

Light oils in the Oleomax and Oleopator Class I light-oil separators are separated

out by a coalescence unit which helps trap the finest oil drops and coalesce them

together to form larger oil drops capable of being separated out. This coalescence

unit (2) consists of a cylindrical coalescence element centrically positioned around

the float cage. It consists of a PE-HD supporting basket and usually a single or

double-layered coalescence mat made out of a mixture of knitted materials (stain-

less steel and polypropylene or polyurethane material (only from Oleopator NS 40

upwards), which is wrapped around the supporting basket and held in position by

tensioners with Velcro strips. In the NS 6 version (only Oleomax) with a 5000 litre

sludge trap, the coalescence element consists of a cylindrical perforated sheet of

PE-HD positioned centrically around the float cage.

Function of the Class II light-oil separators

No coalescence unit is required in the Oleomax and Oleopator Class II light-oil

separators. Light oils are exclusively separated out statically via the flow path and

the dwell time within separator.

13

3.2 Oleopator-CRB

Fig. 2. Light-oil separator Oleopator-CRB Class I (Oleopator-CRB Class II not

shown: identical configuration to the Oleopator-CRB Class I, but without the coa-

lescence element (2))

1 Inlet pipe 2 Coalescence element (knitted wire mesh or polyurethane material) 3 Outlet pipe with float cage 4 Reinforced concrete tank 5 Upstream sludge trap (optional accessory)

General

The Oleopator-CRB Class I and Class II light-oil separators do not have an inte-

grated sludge trap. A sludge trap (5) can be installed upstream of the light-oil

separator to trap sediments before they enter the separator. The latest ACO Civil

Engineering catalogue for separators and pumping stations designed for ground

installation contain all of the necessary dimensions and layouts of sludge traps

pursuant to EN 858, as well as the appropriate ACO sludge traps.

1 2

3 5

4

4 Oleopator-CRB

14

General function Class I light-oil separator

Light oils in the Oleopator-CRB Class I light-oil separators are separated out by a

coalescence unit (2) which helps trap the finest oil drops and coalesce them to-

gether to form larger oil drops capable of being separated out. This coalescence

unit (2) consists of a cylindrical coalescence element centrically positioned around

the float cage. It consists of a PE-HD supporting basket and usually a single or

double-layered coalescence mat made out of a mixture of knitted materials (stain-

less steel or polypropylene) or from nominal size 30 made of porous polyurethane

material seated on a round supporting basket made of PE-HD. From nominal size

65, the porous polyurethane material lines the inside of a rectangular supporting

basket. The separators from size 65 have coalescence elements consisting of two

of these rectangular supporting baskets.

General function of Class II light-oil separator

No coalescence unit is required in the Oleopator-CRB Class II light-oil separators.

Light oils are exclusively separated out statically via the flow path and the dwell

time within the separator.

15

3.3 Oleopator-CCB Akkumat

Fig. 3. Light-oil separator Oleopator-CCB Akkumat Class II and Class I in a rein-

forced concrete tank

1 Inlet pipe 2 Light-oil separator Class II 3 Outlet pipe separator Class II and inlet pipe separator Class I 4 Light-oil separator Class I in the form of a PE-HD or stainless steel internal

tank 5 Coalescence element (with knitted wire mesh) 6 Outlet pipe with float cage 7 Reinforced concrete tank 8 Integrated sludge trap

General

The Oleopator-CCB Akkumat light-oil separator is an integrated Class II and Class

I light-oil separator. Pursuant to EN 858 Part 2 “Selection of nominal size, installa-

tion, operation and maintenance” the use of a Class II (2) light-oil separator up-

stream of a Class I (4) light-oil separator is specified for handling certain qualities

of wastewater and special applications. The Oleopator-CCB Akkumat was devel-

oped as a mono-tank solution for these special applications.

1 3

5 2

6

4

7

8

16

Function

The wastewater flowing into the Oleopator-CCB Akkumat first flows through the

Class II (2) light-oil separator where the wastewater is pre-treated before flowing

into the Class I light-oil separator – the “ACO CCB Akkumat” internal tank (4) –

which is made of PE-HD and is integrated within the surrounding reinforced con-

crete tank.

Class II light-oil separators require no coalescence units (5). The light oils are

separated out in a purely static method via the flow path and the dwell time.

In the ACO CCB Akkumat Class I light-oil separator – which is installed in the form

of a PE-HD internal tank within the reinforced concrete tank – light oil is separated

out by a coalescence unit (5) which helps trap the finest oil drops and coalesce

them together to form larger oil drops capable of being separated out. This coales-

cence unit (5) consists of a cylindrical coalescence element centrically positioned

around the float cage. It consists of a PE-HD supporting basket and usually a sin-

gle or double-layered coalescence mat made out of a mixture of knitted materials

(stainless steel and polypropylene), which is wrapped around the supporting bas-

ket and held in position by tensioners with Velcro strips.

CAUTION

Pay attention when filling the Oleopator-CCB Akkumat that the Class I ACO CCB

Akkumat internal tank (4) is filled first before filling the Class II separator (2) in the

light-oil separator system. Failure to follow this instruction may cause the ACO

CCB Akkumat internal tank to float upwards! This could destroy the ACO CCB Ak-

kumat internal tank!

WARNING

Failure to fill the separator in the proper way as described above can cause the

ACO CCB Akkumat internal tank (4) to float upwards. This generates very large

forces with a great risk of injury or death if the instructions are not carried out

properly!

17

3.4 Oleopator-PR NS 80 and NS 100

Fig. 4. Light-oil separator Oleopator-PR Class I and light-oil separator Oleopator-

PR Class II (identical construction to Oleopator-PR Class I, but without the coales-

cence element (2))

1 Inlet pipe 2 Coalescence element (with knitted wire mesh) 3 Outlet pipe with float cage 4 Reinforced concrete tank 5 Integrated sludge trap (only for Oleopator-PR NS 80)

General

The Oleopator-PR NS 80 Class I and II light-oil separators have a 3000 litre

sludge trap. The Oleopator-PR NS 100 Class I and Class II light-oil separators,

however, have no integrated sludge trap. A sludge trap can be installed upstream

of the light-oil separator to trap sediments before they enter the separator. The lat-

est ACO Civil Engineering catalogue for separators and pumping stations contain

all of the necessary dimensions and layouts of sludge traps pursuant to EN 858,

as well as the appropriate ACO sludge traps for the Oleopator-PR NS 80.

3

2

4

1

5

18

General function Class I light-oil separators

Light oils in the Oleopator-PR Class I light-oil separators are separated out by a

coalescence unit (2) which helps trap the finest oil drops and coalesce them to-

gether to form larger oil drops capable of being separated out. This coalescence

unit (2) consists of two cylindrical coalescence elements centrically positioned

around the float cage. It consists of a PE-HD supporting basket and usually a multi

-layered coalescence mat made out of a mixture of knitted materials (stainless

steel or polypropylene) wrapped around the supporting basket and held in position

by tensioners and Velcro strips.

General function of Class II light-oil separators

No coalescence unit is required in the Oleopator-PR Class II light-oil separators.



19

3.5 Oleopass

Fig. 5. Light-oil separator Oleopass Class I and light-oil separator Oleopass Class

II (same construction as Oleopass Class I, but without a coalescence element (2))

1 Inlet pipe 2 Coalescence element (made of knitted wire mesh or perforated sheet) 3 Outlet pipe with float cage 4 Reinforced concrete tank 5 Bypass channel 6 Outlet pipe sludge trap and inlet pipe to light-oil separator 7 Light-oil separator consisting of a PE-HD internal tank 8 Sludge trap 9 Weir sill in the bypass channel

1

2

3

4

5 9

6

7

8

20

General

The Oleopass light-oil separator has an internal bypass channel (5) within the

separator and a weir sill (9) integrated within this bypass channel. The light-oil

separator has the form of a PE-HD internal tank (7) and this is the element which

separates out the light oils. No light-oil separation takes place outside of this PE-

HD internal tank. Solids mainly sediment out outside of the PE-HD internal tank in

the sludge trap zone (8).

CAUTION

Pay attention when filling the Oleopass that the round PE-HD internal tank (7) is

always filled first. Only then fill the reinforced concrete tank (sludge trap (8) of the

Oleopass) of this light-oil separator. Failure to fill the light-oil separator in this order

may cause the internal tank to float upwards! This could destroy the internal tank!

WARNING


PE-HD internal tank (7) to float upwards. This generates very large forces with a

great risk of injury or death if the instructions are not carried out properly!

Function of the bypass separator

Wastewater flowing into the Oleopass exclusively flows through the sludge trap (8)

and the light-oil separator (7) where it is treated as long as the wastewater does

not overflow the weir sill in the bypass channel (9). Wastewater only overflows the

weir sill (9) when a certain inflow volume is exceeded (more than the nominal size

in l/s: e.g. NS 6 = inflow of 6 l/s). Wastewater flowing over the weir sill moves

along the bypass channel (5) and is discharged untreated.

The special design of the Oleopass bypass separator was developed to clean as

completely as possible the usually heavily contaminated first pulse of wastewater

flowing into the separator during very heavy downfalls or normal rainfall. The sub-

sequent pulses of wastewater flowing into the separator after a heavy downpour –

especially during peak flow – usually consists of pure rainwater without much con-

tamination and can therefore be discharged untreated into the sewers or rivers.

21

Function light-oil separator Class I

In the Oleopass Class I light-oil separator which takes the form of a PE-HD inter-

nal tank (7) installed within the reinforced concrete tank (4), light oils are separated

out by a coalescence unit (2) which helps trap the finest oil drops and coalesce

them together to form larger oil drops capable of being separated out. This coales-

cence unit (2) consists of a cylindrical coalescence element centrically positioned

around the float cage. It consists of a PE-HD supporting basket and usually a sin-

gle or double-layered coalescence mat made out of a mixture of knitted materials

(stainless steel and polypropylene), which is wrapped around the supporting bas-

ket and held in position by tensioners with Velcro strips.

General function of Class II light-oil separators

No coalescence unit is required in the Oleopator-PR Class II light-oil separators.



22

23

4 Commissioning

4.1 General

All of the components of the system must be inspected to ensure that nothing is

missing (inspection should take place using the delivery documents). A very im-

portant aspect is the proper fastening of the type plate in the maintenance shaft as

shown in Figure 7.

Fig. 6. Fixing the type plate in the maintenance shaft

The front of the type plate contains information on the following:

• Type identification

• Nominal size

• Class

• Volume of the separator and the sludge trap

• Maximum storage volume of light oil and the maximum thickness of the

light-oil layer

• Maximum permissible sludge thickness

Instructions on installing the float are given on the reverse of the type plate.

Seil Rope

Eye screw

Type plate

Equalising ring

Manhole ring

Manhole cone

24

4.2 Filling the separator

WARNING

The excavation should be filled in before filling and commissioning the separator.

There is otherwise the risk that the cover plate and the shaft top section could float

upwards!


Clean the system thoroughly before filling. Any mortar residues which may have

been left behind after previous construction work should be removed and disposed

of appropriately.

CAUTION

The mortared joints must be allowed to harden properly before filling the tank with

water.

CAUTION

The float must be removed before the separator is filled. Do not install the float in

the float cage until the separator has been completely filled (this is indicated by the

continuous flow of water into the sewers via the sampling shaft). Failure to follow

this instruction may cause the outlet pipe to be blocked by the float, causing ex-

cess water to accumulate in the separator and backflow into the sewers. The

separator cannot function properly if this occurs.

25

Special instructions for filling the Oleopass and Oleopator CCB Akkumat

light-oil separators

CAUTION

Pay attention when filling the Oleopass and Oleopator-CCB Akkumat that the

round PE-HD or stainless steel internal tank is filled first before filling the rein-

forced concrete tank of the light-oil separator system. Failure to follow this instruc-

tion may cause the internal tank to float upwards! This could destroy the internal

tank!

WARNING


PE-HD internal tank to float upwards. This generates very large forces with a great

risk of injury or death if the instructions are not carried out properly!

26

27

5 Self-checking, maintenance, disposal and inspection

Because proper maintenance of the separator is restricted when the separator is

full, it is recommended that the dates for disposal and maintenance are co-

ordinated. Instructions on entering the separator are given in chapter 6.

5.1 Self-checking and maintenance work

Measures for self-checking, maintenance and inspection must be carried out in

compliance with the stipulations laid down EN 858.

Measures What must be done? Who should do it?

Recom-mended Interval

Self-checking by the opera-tor

Checking the proper functioning of the system. In particular, the self-actuating closure and the coalescence unit. The checks should be docu-mented in the operations log.

Properly quali-fied operative

Monthly

Maintenance Measures as under self-checking by the operator, and the following addi-tional measures when required: clean-ing or replacing the coalescence unit; emptying and cleaning the separator; cleaning the discharge channel in the sampling shaft.

Properly quali-fied operative

Every 6 or 12 months de-pending on the application for which the separator is used

Disposal The separators must be emptied at the latest when: 80 % of the maximum oil storage volume has been reached or 50 % of the max sludge trap vol-ume has been reached.

Always only by a properly authorised disposal com-pany

As required, but at the latest for the general inspection

28

5.1.1 Self-checking by the operator

The scope of the monthly inspection of the separator by a properly qualified opera-

tiven2) includes:

- Measuring the thickness and volume of the layer of light oil separated out at the

top of the separator

- Measuring the height of the sludge layer in the sludge trap

- Checking the proper functioning of the self-actuating closure in the separator

- Inspecting any of the alarm systems which may be present (not until 6 months

after the general inspection)

- The cyclone (type Oleotop) is usually kept clean by the flow.


Immediately rectify any faults which are identified, and remove any coarse floating

material.

Equipment to help self-checking by the operator:

Fig. 7. ACO control kit

Order our specially developed control kit for your monthly inspection. The control

kit consists of: a case with a dipstick, dipstick plate, water verification paste, pH

indicator rods, operations log, etc. .

Please order from your local ACO service partner.

More informations: www.aco-online.de

29

5.2 Maintenance

The separator must be maintained every six months in accordance with the stipu-

lations in EN 858. In addition to the inspection measures carried out by the opera-

tor, it may also be necessary to carry out the disposal operations if necessary.

- Emptying and cleaning the separator as required (e.g. if there is a large accu-

mulation of sludge or if the sludge has reached its maximum height, or when 80

% of the maximum oil storage volume has been reached).

If the separator has been exclusively used for

- Treating rainwater contaminated with light oils,

- As a safety measure connected to installations and areas where light oils are

handled

It may be possible to extend the maintenance intervals to a maximum of 12

months depending on the amount of sludge and light oils which accumulate – the

decision is up to the operator.

CAUTION

The findings and the work carried out must be recorded and commented on in the

operating log (supplied as standard in the control kit).

30

5.3 Checking the coalescence unit

5.3.1 Type Oleomax, Oleopator-CRB NS 3 to 20, Oleopator NS 30, Oleopass,

Oleopator-CCB Akkumat

Cleaning the coalescence unit

The coalescence unit must be pulled up above the water level in the separator us-

ing a hoist where necessary. The coalescence unit should be held above the water

for a while to allow water to drip off before removing it completely using the hoist.

Separator nominal size NS

Weight in kg dirty coalescence unit

3 6

6 / 8 / 10 9

15 12

20 15

30 20

The coalescence unit can be cleaned as it is when it is removed from the separa-

tor. All of the dirt in the knitted wire mesh must be removed completely. The coa-

lescence unit should be cleaned in a basin to ensure that any oil contaminating the

cleaning water is not discharged into rivers or sewers. When the coalescence unit

has been cleaned and replaced in the separator, the contents of the basin can be

disposed of by simply pouring it into the separator.

Cleaning can be carried out as follows:

- Spraying with a jet of water, min ¾ inch pipe, under mains pressure (min 4 bar)

or

- Spraying with a high pressure device at max 60 bar and using cold water.

And only when absolutely necessary:

With cleaning products (it is important here to only use separator-friendly cleaning

products – see the manufacturer’s details describing the cleaning product or con-

tact your local ACO service partner), and using a high pressure device with max

60 bar and 60 °C.

31

5.3.2 Type Oleopator CRB NS 30 to 50 and Oleopator NS 40 to 50

Structure of the coalescence element

The coalescence material consists of a porous polyurethane material with a thick-

ness of 75 or 100 mm. It is fastened onto the supporting basket with a special

clamp. Additional tensioners with Velcro strips ensure that it is held in place in the

proper position. The dimensions are listed in Table 1.

Table 1. Dimensions of the coalescence material

Dimensions of the coales-cence material in mm Separator nominal size

NS Material thickness

in mm Diameter Height

30 75 600 600

40 75 600 1200

50 100 650 1200

Depending on the type, the weight of the contaminated coalescence element is

around 160 kg.

Preparations for cleaning

It is easier to clean the coalescence mat by first removing it from the supporting

basket so that it can be thoroughly cleaned from both sides.

First remove the tensioners and then the clamp. The coalescence mat is then free

to be removed from the supporting basket.

Cleaning

Lay the coalescence mat onto a wire mesh to allow the cleaning water to pass

through the mat and flow out on the lower side.

CAUTION ENVIRONMENTAL PROTECTION

The water used to wash the coalescence mat must be treated in a light-oil separa-

tor afterwards and must not be discharged untreated into the sewers or rivers!

Assembling the coalescence mat

The coalescence mat is assembled in the reverse order described above.

32

5.3.3 Type Oleopator CRB NS 65 to 100


The coalescence material is 100 mm thick and consists of a porous polyurethane

material fixed in special cassettes which can be removed from the separator for

cleaning.

There are 4 cassettes in each separator. Table 2 lists the dimensions of the coa-

lescence elements.

Table 2. Dimensions of the coalescence elements in type Oleopator CRB NS 65 to

100 light-oil separators (the weights in the table refer to contaminated elements)


Dimensions in mm

Weight kg

65 1360 x 540 x 100 70

80 1755 x 540 x 100 90

100 2050 X 540 x 100 110

Depending on the type, the weight of the contaminated coalescence element is

around 160 kg.

Preparing for cleaning

Cleaning is made easier by first removing the coalescence mat from the cassette

so that the mat can be cleaned on both sides properly.

Bend the upper part of the cassette upwards slightly to remove the coalescence

mat. This makes removing the mats easier.

Cleaning



CAUTION Environmental protection





33

5.3.4 Oleopator-PR


The coalescence material is fixed to the supporting basket at 2 or 3 levels each

with 4 or 6 layers. Each separate layer is held in place by tensioners.

Table 3. Dimensions of the coalescence elements in type Oleopator-PR


Number of levels Number of mats per level

80 2 4

100 3 6

The weight of a dirty coalescence element is approx. 260 kg.

Type Oleopator-PR separators have 2 coalescence elements.

Preparations for cleaning

Because the coalescence elements have 4 to 6 layers, it makes cleaning easier if

the outer layers are wound off the supporting basket for cleaning. The two inner

layers can be left on the supporting basket for cleaning.

The three tensioners are first removed by opening the Velcro fastener. The coa-

lescence mat can then be removed from the supporting basket.

Make sure that the sequence in which the mats are removed is noted because

each layer has a different length.

Cleaning



CAUTION Environmental protection





34

5.3.5 General hints for cleaning

These general hints for cleaning are guilty for every ACO separator.

Cleaning can be carried out much more easily and quickly if a redundant coales-

cence unit is used. Simply swap the clean coalescence unit for the dirty coales-

cence unit to avoid long operational hold-ups. The dirty coalescence unit can be

cleaned when time allows.

The dirty unit should be stored in a water-filled container or in a plastic sack before

it is cleaned, to prevent any dirt on the unit from drying hard.

CAUTION

The water used to wash the coalescence unit must be treated in a light-oil separa-

tor and must not be discharged untreated into sewers or rivers!


The water used to wash the coalescence unit is generally disposed of by pouring it

into one of the separator inlet pipes or having it disposed of by an authorised dis-

posal company!

Coalescence mats

Multiple use:

The coalescence material consists of a high quality knitted mesh of two materials

(polymer/stainless steel) which is very resistant to ageing and physiologically neu-

tral. It can therefore generally be repeatedly cleaned and reused. However the

coalescence mats and the tensioners are regular wear parts. New mats and ten-

sioners can be bought at your local ACO dealer or ACO service partner.

Used only once:

If there are no suitable cleaning options (in exceptional cases) or for other rea-

sons, it is also possible to use the coalescence mats only once. The contaminated

coalescence mats are removed from the supporting basket, placed in a rugged

and tight plastic sack, and then disposed of as oily toxic waste.

Removing the coalescence mats:

35

Every coalescence mat is fixed to the supporting basket at the top and the bottom

with tensioners and Velcro strips (the fluffy side outwards). These have to be re-

moved. The mat can then be wound off. Reversing this procedure is used to fix the

coalescence mats in place again. Pay attention when doing this to make sure that

the coalescence mats are properly wrapped around the supporting basket leaving

no unwanted openings which could allow the wastewater to flow through un-

treated. It is important that the water can flow through the mat itself though. The

tensioner is extremely tear resistant and should have no problems in holding the

coalescence mat in place. However, the tensioners should be replaced every five

years. Pay attention here to make sure that the coalescence mats are not pulled in

place so tightly that the mats themselves are damaged.

The coalescence mat, the supporting basket and the tensioners are subject to

wear and tear. Inexpensive replacements can be ordered from your local ACO

service partner. The article numbers for these items are listed on the delivery

document. If the delivery document is no longer at hand, the parts can be ordered

by stipulating the type identification and the year of manufacture.

36

5.4 Disposal

The latest time for emptying a separator is when:

1. 80 % of the maximum oil storage has been reached

2. and/or 50 % of the maximum sludge trap volume have been reached.

The type plate shows the relevant thicknesses of each layer (the type plate is lo-

cated inside the separator).

If the levels always remain below these limits, it is still useful to empty the separa-

tor at least every five years starting with the time start of operating took place. The

contents of the separator must be disposed of by an authorised disposal company.

CAUTION

If biodiesel enters the separator, the light oil separated out should be removed

from the surface of the water after one year. The light oil separated out must be

removed immediately after accidental spills.

37

6 Entering the separator

WARNING

All of the relevant accident prevention regulations must be strictly observed when

entering a separator!

The separator can be entered via the maintenance shaft which is usually located

above the float cage. Entering the following models (Oleomax, Oleopator) is pos-

sible via openings above the float cage. In these cases, carry out the following

steps to ensure optimal accessibility:

1. Remove the coalescence unit (if installed)

2. Remove the float

3. Pull the float cage from the holder and remove it.

The separator can now be entered.

Once all of the work has been carried out, the next steps ensure that the original

condition of the separator is reinstated:

1. Place the float cage back in the holder (taking care to properly align the pins

in the cage)

2. Replace the float after the separator has been filled

3. Install the coalescence unit (if fitted)

The float cage does not need to be removed in any of the other models because

the separator can be entered by a third maintenance shaft.

38

39

7 ACO Civil Engineering service network and ordering wear and tear parts

ACO has its own service and customer care organisation in your country. You will

find your local ACO dealer on this website: www.aco-online.de

40

Space for your notes

Space for your notes

42

Producing factory of the separator:

ACO Beton GmbH

Mittelriedstraße 25

68642 Bürstadt

Tel.: 0049-6206-9816-0

Fax: 0049-6206-9816-80

Date post:	10-Oct-2014
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