Enz 10.028 User manual

Wire Rope and

Chain Scrapers

10.028

Operating Manual

English

August 22| Version 1.0

 Operating Manual 
Page 2of 28 ©2022 enz® technik ag State 09.08.22 
Preface .....................................................................................................................4 
Purpose of the document.........................................................................................4 
1Safety...............................................................................................................5 
1 Noncompliance with the safety information and its consequences ............5
2 Target group.................................................................................................5 
3 User requirements .......................................................................................5
4 Explanation of general safety instructions ...................................................6
5 Information provided in these operating instructions .................................6 
6 Intended use.................................................................................................6 
7 Safety warnings for modifications................................................................7
8 Protective equipment for working in manholes, excavations, and sewer 
lines ......................................................................................................................7
9 General safety instructions ..........................................................................9
2Legal ..............................................................................................................11 
1 Copyright ....................................................................................................11 
2 Exclusion of liability ....................................................................................11 
3 Warranty conditions...................................................................................11 
3Wire rope and chain scrapers.........................................................................12 
1 Introduction................................................................................................12 
2 Application .................................................................................................12 
4Installation.....................................................................................................13 
1 Assembling the tools ..................................................................................13 
2 Preparatory work .......................................................................................13 
3 Setting up the work area ............................................................................13 
4 Adjusting the wire rope and chain scraper to the sewer line diameter ....14 
5Operation.......................................................................................................16 
1 How to operate the tools ...........................................................................16 
2 Cleaning pipes with minor damage ............................................................16 
3 After use .....................................................................................................17 
4 Completing the work process.....................................................................17 
5 Troubleshooting .........................................................................................17 
5.1 Chain scraper is prevented from rotating ..............................................17 
5.2 No more forward movement.................................................................17 
6Maintenance..................................................................................................19 
1 Maintenance after each use.......................................................................19 
2 Nozzle inserts .............................................................................................19 
2.1 Replacing the nozzle inserts...................................................................19 
3 Replacing parts ...........................................................................................20 

Operating Manual

6.4 Disposal, environmental protection...........................................................20

7Technical data................................................................................................21

7.1 Chain settings .............................................................................................23

7.2 Cage adjustments .......................................................................................24

7.3 Converting a chain scraper to milling cutter without impact.....................24

7.4 Converting the milling cutter without impact to chain scraper .................25

7.5 Scope of delivery ........................................................................................26

8Index..............................................................................................................27

8.1 Figure..........................................................................................................27

8.2 Drawing ......................................................................................................27

Version

Revision

Date

Initials

1.0

created

August 22

bbi

Preface Operating Manual

Dear valued customer,

Thank you for the confidence and trust you've placed in us by purchasing one of our

products.

We always appreciate suggestions and new design ideas. Your feedback will help us

improve the design of our product and the associated documentation.

If you have any questions or suggestions, please contact our Customer Service Depart-

ment.

enz® technik ag

Tel. +41 41 676 77 66

[email protected]

Person responsible for documentation:

Bryan Bieri (Tech. Support / QM Manager)

We reserve the right to modify and further enhance our products without prior notice

as a result of technological advances. Misprints reserved.

The purpose of this manual is to instruct you on how to use our product correctly,

effectively, safely, and for its intended purpose. The user will be informed about risks,

reasonably foreseeable misuse, and residual risks.

Important!

Read carefully before use.

Keep for later reference.

Please read this operating manual thoroughly before using the cleaning tool. Make

sure that all employees who work with the product know how to use it correctly.

The operating manual must be available to all operating personnel at all times. It must

be kept in an easily accessible place.

If the manual is misplaced or destroyed, a new copy can be requested from your near-

est dealer or from the manufacturer directly.

Operating Manual Safety

Disregarding these safety instructions may lead to accidents and severe personal in-

juries, material damage, and damage to the environment.

The manufacturer cannot be held responsible for any damages resulting from non-

compliance with these instructions.

This manual is intended for all persons who will be involved in the assembly, start-up,

and operation of the pipe cleaning tool.

Personnel intending to assemble, start up and operate the tool must...

•Be familiar with the field of sewer maintenance work and possess the appropriate

technical knowledge.

•Be trained and instructed appropriately in the use of the product.

Have read and understood the operating manual, in particular the section on

“Safety.”

If your personnel do not possess the necessary knowledge, they must be trained and

instructed on it. If necessary, the pipe cleaning tool manufacturer can provide this in-

struction and training.

Only the maintenance and service activities described in this manual may be per-

formed by users who have met the above-listed requirements. Any additional mainte-

nance and service work may be performed only by qualified specialist personnel from

the manufacturer.

Please refer to the section on "Maintenance".

Safety Operating Manual

The general safety instructions in this section provide information about potential re-

sidual risks, which are inherent to the product and may occur unexpectedly, despite

the proper usage of the product.

In order to prevent personal injuries, material damage, and damage to the environ-

ment, all personnel working with this product must comply with these safety instruc-

tions. It is mandatory for said personnel to read and to understand the information

provided in this section.

DANGER!

Noncompliance may lead to serious injury or loss of life.

WARNING!

Noncompliance may lead to serious injury and / or cause a long-term

disability.

CAUTION!

Noncompliance may lead to injury and considerable material dam-

age, financial loss or damage to the environment.

Information on the technically correct and efficient use of the prod-

uct.

The product is designed to clean the insides of pipes (sewer pipes). The following

points must be followed to ensure proper use of the product:

The cleaning tool may be used only in pipes or pipe-like sewers. The profile to

be cleaned must be free of leaks and surrounded by material.

The tool may be used on the following types of pipes:

oPE pipes

oSteel pipes

oConcrete pipes

For use in pipes made of other material, please consult the manufacturer.

Operating Manual Safety

The product may be operated only in pipes with correctly installed and de-

fect-free connections.

Cleaning areas (manholes, pipe branches etc.) need to be sufficiently secured

during the operation, including during construction and cleaning work.

During the cleaning operation, no personnel are allowed inside the pipes or

at either end of the pipes.

The maximum pressure indicated on the nozzle may not be exceeded.

Wastewater may not be drained into watercourses (creeks, rivers etc.).

The product must be inspected to ensure it is in proper working order before

every start-up.

Defects must be rectified before start-up.

Use the tool only as intended. (Use only the correct wrench for nuts).

Secure the hose lines in such a way that they cannot become damaged during

operation.

Only the accessories provided and approved by enz® technik ag may be used.

No other changes or modifications to the pipe cleaning tool may be performed. Only

parts authorized by the manufacturer may be used. The manufacturer is not liable for

damage resulting from unauthorized changes to the product.

The employer must provide suitable personal protective equipment and ensure that it

is worn by the employees during work.

In the following section, the protective equipment prescribed by Schweizerische Un-

fallversicherung SUVA (the Swiss Accident Insurance Organization) will be described.

Safety Operating Manual

For more information on this, refer to the brochure:

Safe entry and working in manholes, excavations, and sewer lines

(in German, French & Italian)

Order number: 44062.d Suva

Schweizerische Unfallversicherungsanstalt

Arbeitssicherheit

Postfach, 6002 Lucerne, Switzerland

For information:

Phone +41 41 419 51 11

For orders:

www.suva.ch/waswo

Phone +41 41 419 58 51

Respirators

Self-contained respiratory equipment for spending time in dangerous

atmospheres and for use during rescue operations.

Respirators

Self-rescue respiratory equipment (devices with compressed air tanks

or regeneration devices) for working in sewers and for first aid for in-

jured persons.

Rescue harness

Rescue harness or protective clothing with a loop sewn into the neck.

During rescue, the rescue rope will be attached to the neck loop. In-

jured persons will be lifted out using a rescue lifting device with a self-

actuating load brake.

Suitable working clothing

Leak-proof clothing protects the skin from becoming soiled and from

possible infections. Visually conspicuous work clothing makes the em-

ployee more visible to traffic.

Appropriate footwear

Safety footwear should, in particular, have good grip and be slip-re-

sistant and leak-proof (e.g. rubber boots).

Gloves

Appropriate gloves will protect you from hand injuries and contact

with materials that could impair your health and from untreated wa-

ter.

Hardhat

The hardhat will protect your head from falling objects and from

bumping into fixed components and objects.

Operating Manual Safety

Hearing protection

If there is noise that could damage your hearing, you can wear, e.g.

earmuffs with built-in headphones and microphone.

Eye protection

Your eyes should be protected against grit, sprayed dangerous sub-

stances, etc.

Lighting independent of the power grid

For example, you should carry a waterproof flashlight or wear a flash-

light attached to your hardhat.

Danger! | High-pressure water jets

Defects in or unintended use of the product could cause hazards due

to pressurized water spray. Never remain in the channel during oper-

ation. Ensure that the product is in perfect condition before opera-

tion. Highly concentrated water jets can cause serious injury and

could even sever limbs.

Danger! | Toxic vapors

There can be toxic vapors in sewer lines. Wear the prescribed protec-

tive equipment such as gas masks, gas warning devices and rescue

harnesses. Inhaling toxic vapors or air that is contaminated with par-

ticles could be fatal or lead to serious injuries if the particles enter the

lungs.

Warning! | Falling objects

Around open manholes, objects can fall down into the manhole and

onto the people below. Never remain directly beneath the manhole

opening when guiding the products in. Secure the manhole entrance

against parts that could fall. Do not throw any tools or objects down

into the manhole. Do not enter any manhole where there is a danger

of falling. Personnel could become trapped.

Warning! | Chemical burns

There may be unidentified, corrosive, or otherwise harmful sub-

stances in the sewer line. Put on appropriate protective clothing.

Use the protective equipment prescribed. Otherwise, you could suf-

fer from chemical burns to your skin and eyes or become infected

with pathogens.

Safety Operating Manual

Warning! | Falls from height

Open manholes are to be expected in the area where you will be

working with the product. You must warn people about open man-

holes. Pay attention to where you are walking.

Warning! | Hand injuries

In case of tampering with the product, there is a risk of hand injury

due to getting caught or abrasion. Wear gloves during work. Pay at-

tention to where you grip the product. Always have two people carry

heavy equipment. Consequences can include crushing injuries, abra-

sions or even the loss of a limb.

Caution! | Sharp objects

If the product is tampered with, there is a risk of hand injuries due to

sharp edges. Wear gloves during work. Pay attention to where you

grip the product. Consequences can include cutting injuries to your

hands or other parts of your body.

Caution! | Trip hazards

Lines and other objects are to be expected on the ground in the area

around where the product is being used. Pay attention to where you

are walking. Keep the area of use tidy. Tripping and falling could cause

serious injuries.

Operating Manual Legal

This manual shall not be duplicated partially or in its entirety without the prior written

permission of enz®technik ag. It shall not be photocopied, reproduced, translated, or

converted into an electronic or machine-readable format.

The manufacturer is not liable for damage that:

•Is caused as a result of unauthorized changes to the product.

•Is caused by not following the safety instructions.

In accordance with our sales and delivery conditions, we offer a warranty. However,

the warranty is voided if:

•The product is used under conditions that are not permitted by us.

•Replacement and accessory parts that are not original replacement and acces-

sory parts from enz® technik ag are used.

•If there is damage due to:

oImproper use

oNot following the operating manual

oUnsuitable operating equipment

oIncorrect or improper routing of the hose or pipelines

oUnauthorized changes or modifications to or conversions of the product.

Wire rope and chain scrapers Operating Manual

enz® chain scrapers are universally usable tools.

The same tool can be adapted and used for a wide range of pipe diameters. Different

deposits such as limescale, cement slurry, roots, etc. can be removed efficiently.

Tools with Art No. 10.XXXR can be operated with recycled water.

In addition, enz® chain scrapers can be modified in various ways. Simple handling and

maintenance are also traits that go hand-in-hand with enz® chain scrapers.

•Used to prepare for restoration work, such as relining, grouting, or applying coat-

ings

•Complete root removal

•Removal of incrustations and deposits

•Removal of concrete residues in newly-laid channel pipelines (for acceptance in-

spection)

Operating Manual Installation

All tools are supplied ready to be used. Once the tools have been unpacked, please

check the content for completeness.

It makes sense to clarify some points before use. Knowledge of the following points is

helpful during preparations and when adjusting the wire rope and chain scraper:

•Layout of the pipes

•Inner pipe diameter of the sewer line where work will be performed

•Pipe material of the sewer line where work will be performed

•Type of foreign material in the pipe

•Planned flushing direction →We recommend that you work against the direction

of the water flow.

•Any type of gradient in the sewer line where work will be performed

•Access points to the sewer line

Prior to working with a wire rope or chain scraper, the following procedures must be

followed:

Set up barriers and safety equipment (warning triangle, block off the area, etc.)

The work area must be blocked off and secured so that there is no risk of falling

or other traffic-related dangers.

The necessary information on the wastewater flowing through the manhole must

be obtained (chemicals, gas, vapors, etc.)

Measuring instruments such as explosive gas meters, oxygen meters, gas warning

devices, etc. must be readily available.

You must ensure that the appropriate nozzle sizes for cleaning the pipes are avail-

able. The application range of each nozzle is listed in the "Technical data" section

on Page 21.

Installation Operating Manual

The layout of the pipes (manhole drawings) must be known before starting the

work so that the nozzle can be prevented from emerging at a pipe end. Support

personnel must be on hand to monitor possible emerging points.

Have the liability waiver signed by the customer to protect against any claims for

damages.

Figure 1 Blocked off & signed work area

A wire rope or chain scraper must always be adjusted to the inner diameter of the pipe

where work will be performed.

Chain lengths are selected to ensure that the ends are always scraping against the pipe

wall. This prevents the tool from rotating too fast during operation and causing unnec-

essary damage to the tool and the pipe.

The only exception is if the work is to be performed in an ovoid profile.

The skids can be adjusted on some articles in the wire rope and chain scraper series;

in others, the skids and the chains are replaced based on the sewer line diameter.

When adjusting the skid and cage settings, always use the largest possible setting for

the inner sewer line diameter being worked on.

Operating Manual Installation

To correctly install your wire rope or chain scraper, please refer «Technical data on

page 23».

You will find tool-specific information on the chains, ropes and skids to be used and

how to adjust them there.

Caution!

Always use the correct chain or rope length. The chains or

ropes must drag along the pipe wall, and they must not strike

the wall! Otherwise, the pipe wall or the product could be-

come damaged.

Drawing 1 Chain length greater than pipe Ø

Operation Operating Manual

1. Flush all loose debris from the pipe prior to working with a standard nozzle. Loose

debris can interfere with the work. If need be, you must use a pointed nozzle or

a Bulldog, with their specialized front jet features, to clear the pipe of roots.

2. The chain scraper is screwed onto the hose unrolled from the vehicle. The thread

dimension depends on the size of the chain scraper.

3. Push the wire rope or chain scraper at least half of its length into the pipe to be

cleaned. If possible, you should work against the direction of flow.

4. Increase the pressure on the wire rope or chain scraper up to 100 –120 bar (1450

–1740 psi) - while paying attention to any loss of pressure in the hose.

5. Keep an eye on the forward motion while unrolling the hose and pay attention to

the noise from the work. If you notice any irregularities, refer to Troubleshooting

in Section 5.5 on Page 17.

6. Also allow water to run when retracting the wire rope and chain scraper so that

the nozzles do not become clogged.

7. Close the manhole cover once work is completed.

Normally, the head of the nozzle will turn in a counter-clockwise direction when in use.

Meanwhile, the connecting thread will turn in a clockwise direction. This prevents the

nozzle from detaching itself from the connecting thread during operation.

Slightly damaged pipes usually exhibit cracks in the pipe wall. If detected, always con-

tact the customer or the appropriate authorities.

When working inside a slightly damaged pipe, extreme caution must be used. Use of

the tool is always at your own risk! enz® technik ag waives all liability!

Continue to run the water at low pressure when retracting the

tool. This prevents wastewater from entering the interior of

the nozzle, which can lead to failure.

Operating Manual Operation

After you have completed work, you must still do the following:

1. Rinse the tool with fresh water.

2. Spray OIL SPRAY BIO (Item no. C191) on the entire tool. Then manually turn the

rotor several times.

3. Then check the tool for traces of wear and replace any defective parts if needed.

If possible, use a camera to inspect the cleaned pipes. Look out in particular for any

damage and ensure that no liquids can escape into the environment.

All manholes must be closed after the cleaning has been completed.

5.5.1 Chain scraper is prevented from rotating

The wire rope or chain scraper makes a characteristic noise. This sound will tell you

whether the chain scraper is working or has become “stuck”.

When the chain scraper no longer turns:

1. Reduce the pressure.

2. Pull the chain scraper back about 500 mm (20 inch)

3. Carefully increase the pressure until you can hear that the chain scraper is working

again.

5.5.2 No more forward movement

There are two possible reasons why the wire rope or chain scraper is no longer moving

forward:

•A gap or relative displacement between two pipes is too large. There is a danger

that the guide roller is stuck.

•The wire rope or the chain has caught on something or has become wedged in a

gap.

DANGER!

When cracks are washed out, pipe fragments can break off

and the material surrounding the pipe may be flushed out.

When in doubt, you should not use the product. Using it in

these circumstances can result in collapsed channels.

Operation Operating Manual

If this is the case:

1. Pull the tool back.

2. Try to work from the other side.

If there is a danger that the pin bolt chains have become caught in existing or previ-

ously flushed-out gaps, then link chains should be used. If the gap is more than 20 mm

(0.75 inch), then the chain scraper is not suitable.

Drawing 2 Maximum offset

Operating Manual Maintenance

The maintenance and service activities described in this manual may be performed

only by users who have the required knowledge.

1. Check the inserts for clogging.

2. Then check the tool for traces of wear and replace any defective parts if needed.

3. For corrosion protection and care, treat the tool with OIL SPRAY BIO (Item No.

C191).

The nozzle inserts must be inspected regularly. Nozzle wear and tear depends on the

degree of contamination in the water used. If recycled water is being used, the nozzle

inserts must be inspected daily and cleaned if necessary.

CAUTION

Worn nozzle inserts impair cleaning results and increase risk

when working with high pressure. If recycled water is being

used, the nozzle inserts must be inspected daily.

If you do not know the nozzle diameter, JetCalc must be used to determine it.

6.2.1 Replacing the nozzle inserts

1. Remove the defective nozzle inserts.

2. Clean the threaded holes and the new inserts. All threads should be grease-free.

3. Coat the nozzle insert threads with Loctite No.243 adhesive (Art. No.C192).

4. Immediately screw the nozzle inserts into the tool body as far as they will go, then

use a socket wrench to slightly tighten each insert.

5. Wait at least 24 hours until the adhesive has hardened.

Maintenance Operating Manual

If the tool is due to remain unused for an extended period, spray the nozzle holes and

the connecting threads with OIL SPRAY BIO (Item No. C191).

A qualified user is allowed to replace all parts that are fitted during in-

stallation and the following additional parts:

•Chain sets

•Wire brushes

•Wire rope loops

•Nozzle inserts

•Skids & cages

Any additional maintenance and service work may be performed only by qualified spe-

cialist personnel from the manufacturer.

The tools do not require any special disposal procedure, and they can be disposed of

with other scrap metal without problems.

Please note that pipes are cleaned only if the composition of the wastewater is known

(industrial wastewater in particular). Under no circumstances may chemicals or other

toxic substances flow through defective pipes and enter the environment.

Defective pipes or leaking substances must be reported to the supervisory body or

appropriate authority.

Do not use excessive amounts of water. This will help conserve our natural resources.

CAUTION!

Damaged nozzle inserts may be replaced only with identical

nozzle inserts of the same diameter. If the tool is not cor-

rectly assembled, the tool or the pipe may become damaged.

Figure 2 Oil Spray

Bio, 500 ml

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