Teka LFE 101 ST1 Bedienungsanleitung

Operating instructions

(Translation of the original operating instructions)

LFE 101 ST1

LFE 201 ST1

LFE 301 ST1

TEKA Absaug- und Entsorgungstechnologie GmbH, Millenkamp 9, D-48653 Coesfeld,

Tel.: +49 2541-84841-0, E-Mail: info@teka.eu, www.teka.eu

Table of contents

1. General 4

2. Description of the system elements 5

2.1. Illustration of the system elements 5

2.2. Functionality of the system 6

2.3. Intended use 6

2.4. Residual risk 6

3. Safety instructions 7

3.1. Definition of the hazard symbols 7

3.2. General safety instructions 7

4. Storage, transport and installation of the device 8

5. Commissioning 9

5.1. Connecting the suction line and exhaust air line 9

5.2. Electrical connection 10

5.3. Precoating of the filter cartridges 10

5.4. Connecting the compressed air supply 11

5.4.1. Compressed air supply for the cleaning of the filter cartridges 11

6. Operating the system 12

6.1. Explanation of the operating elements 12

6.2. Connection of an external control 13

7. Maintenance 14

7.1. Reset to maintenance state 15

7.2. Cleaning the filter cartridges 15

7.3. Replacing the filter cartridges 16

7.4. Emptying the dust collecting tank 18

7.5. Draining the condensate 20

7.6. Precoating of new filter cartridges 21

7.7. Replacing the particle filter 22

7.8. Replacing the activated carbon / the activated carbon cassette 24

7.8.1. Replacing the activated carbon 24

7.8.2. Replacing the activated carbon cassette 27

7.9. Replacing the cooling air filters of the turbines 28

7.10. Replacing the filter mats for the air outlet grille 28

7.11. Cleaning/replacing the particle sensor 29

7.12. Check/replace the dust filters for underpressure measurement lines 30

8. ATEX operation 31

8.1. ATEX zoning 31

8.2. Sources of ignition 33

8.2.1. Evaluating the risk of ignition in accordance with DIN EN 80079-36 33

9. Dismantling / Disposal 33

10. Diagnostics and troubleshooting 34

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11. List of spare parts 35

12. Technical data 36

13. EC declaration of conformity 37

14. ATEX Annex to the EC declaration of conformity 38

14.1. ATEX devices 38

14.2. ATEX components 38

15. Training protocol 40

16. Maintenance intervals 41

16.1. Usage-related maintenance 41

16.2. General maintenance 42

16.2.1. Visual inspection of the device 42

16.2.2. Visual inspection of the pipelines for dust deposits 43

16.2.3. Visual inspection of the pneumatic pipes 43

16.2.4. Functional test of the device 43

16.2.5. Electrical test of the electrical lines and earthing connections 44

16.2.6. Test of fixing of the mounted unit elements 44

17. Annex A: ATEX conductivity measurement protocol 45

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1. General

Congratulations on purchasing the product from TEKA.

Our engineers ensure that our devices reflect the state of the art through continuous development.

Nevertheless, misuse or misconduct can endanger your safety. Please observe the following for a

successful use of the device:

Only authorised and instructed personnel can carry out transport, operation,

maintenance and repair of the device. The operator must ensure that the operating

personnel take note of these instructions.

Please read these instructions before operating the device, and observe the safety

precautions to avoid injury!

Store this manual in a safe place! These instructions are to be regarded as a component

of the product!

Adhere to all product notes!

Modifications or conversions that the operator carries out at the device without the

consent of the manufacturer, can lead to new safety hazards or to the loss of warranty

claims.

Observe the manufacturer’s instructions. Contact the manufacturer in case of any

uncertainty:

Tel: +49 2541-84841-0

E-mail: [email protected]

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2. Description of the system elements

2.1. Illustration of the system elements

Installation example:

Z.Nr. 14261701

Pos.1

Pos.2

Pos.3

Pos.4

Pos.5

Pos.6

Pos.7

Pos.8

Pos.9

Pos.10

Operating panel of the control

Dust collecting housing

Filter housing

Particle filter housing

Cleaning housing

Activated carbon housing

Turbine housing

Particle filter

Intermediate frame

Activated carbon cassette

Pos.11

Pos.12

Pos.13

Pos.14

Pos.15

Pos.16

Pos.17

Pos.18

Pos.19

Suction nozzle

Exhaust grille

Connection for mains cable

Connection for external control unit

Industrial connector for the optional

gate valve

Connection for compressed air

Drain valve for compressed air

Swivel castor

Connection for Metering device

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2.2. Functionality of the system

The filter unit serves to suck off and filter polluted air (according to the intended use). The air is purified

on the surface of the filter cartridge in the filter section of the unit. The separated dust is collected in a

dust collecting tank. The activated carbon filter absorbs gases and unpleasant odours. The subsequent

particle filter cleans even fine smokes and dusts. An automatic filter monitoring indicates when a

cleaning or a replacement of the filters is necessary. The purified air is led back into the working room

via an exhaust air grille.

2.3. Intended use

The device is intended for commercial use. If the device is made publicly accessible, it must never be

operated unsupervised by authorized personnel, authorized by the operator.

The intended use of the filter unit is the application combined with laser devices and especially the

extraction and filtration of dusts, fumes and gases.

The filter unit can be used to extract explosive dusts with the following characteristic values (for further

information, see the section on “ATEX operation”):

Kst value

<200 bar*m/sec

MIE (minimum ignition energy)

>10 mJ

Combustibility index

≤ 2

Dust group

IIIB

WARNING

Improper use can damage parts and be a danger to life and limb!

The device must not be used for the extraction of oil-laden welding fume, explosive

gases, hybrid mixtures, glowing or burning substances, gases, water, etc. The device

must not be operated in explosive zones.

Dangers arising from fire.

If the sucked medium is combustible fume or dust, the operator must determine

beforehand which fire protection measures are to be taken.

2.4. Residual risk

CAUTION

Danger due to possible hazardous materials in the exhaust air flow.

Because the unit does not monitor the quality of the air in the exhaust air flow, we

recommend that you always guide the exhaust air flow exiting our unit to areas (e.g. to the

outside into the open air) in which there is no danger to any living being. To do this, it is

necessary to fit a suitable exhaust air line at the filter unit.

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3. Safety instructions

3.1. Definition of the hazard symbols

The device is constructed according to the state of the art and the recognised safety regulations.

Nevertheless, during use threats to life and limb of the user or other persons may arise. The impairment

of the machine or other property are also possible. In these instructions we warn by using corresponding

indications.

WARNING

These instructions are made in case of risks that can lead to injury or death.

CAUTION

These instructions are made in case of risks that can lead to injury.

NOTICE

These instructions are made in case of risks that can lead to material damages.

Information notes are no hazard warnings; they call attention to useful information.

3.2. General safety instructions

WARNING

Dangers arising from improper use / unauthorised operations.

The operator must ensure that their authorised personnel are familiar with all the safety

indications in this manual in advance. The operator is responsible for ensuring that all work

is carried out by authorised and qualified personnel. We therefore recommend using the

training protocol on the last page for that purpose (see chapter “Training protocol”).

Laymen are allowed to operate the device after having received the necessary instructions.

But they are not allowed to carry out any installation, repair or maintenance work.

Dangers arising from fire.

In case of fire, if possible, switch the unit immediately off or disconnect it from the power

supply. Fire extinguishing measures which the operator is obliged to determine beforehand

must be initiated immediately.

The device is additionally equipped with a particle sensor, which can detect an increase of

the particles (eg due to fire, filter break, ...) within the device. The particle sensor thus

provides a monitoring of the particulate matter, but does not provide 100% protection for the

detection of a fire. When the particle sensor is triggered, the device switches off.

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WARNING

Dangers arising from electricity.

The operator must ensure that electrical plants and equipment are only built, modified and

maintained by a qualified electrician or under the direction and supervision of a qualified

electrician. Do not work on components if you are not sure that these are disconnected. If

necessary, disconnect the device from the electric power supply and secure it against

unauthorized restarting.

WARNING

Explosion hazard!

Do not operate the unit if any components are defective, missing or damaged. Check the

orderly condition of the unit before switching it on. The unit must not be operated without a

filter element.

4. Storage, transport and installation of the device

WARNING

Risk of injury from tilting or unmounted components when stored or transported.

The device must be secured against tilting and slipping when it is stored or transported. Do

not stand under or next to the floating load. Lift trucks, forklift trucks and transport cranes

must have a sufficient minimum load bearing capacity. Pay attention to uneven grounds

during the transport. Avoid jerky pushing.

Dangers arising from titling or functional impairments at its destination.

The unit may only be set up on a suitable surface. The surface must be vibration-free and

horizontal. The operator must check the bearing capacity of the surface. As soon as the unit

has reached its intended destination, the brakes of the castors must be activated.

WARNING

Explosion hazard!

The installation location for the filter unit must be examined for potential lightning impacts. If

the possibility of these cannot be excluded then the filter unit must be taken into

consideration in the Operator’s lightning protection concept.

NOTICE

Damage or functional impairment of the unit due to climatic influences.

The unit must be stored in a dry place and protected against moisture during transport. As a

matter of principle, the filter unit is not designed to be installed outside.

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5. Commissioning

WARNING

Dangers arising from a defective condition of the unit.

Make sure that the measures described in this chapter are completed before the

commissioning of the unit. All doors of the unit must be closed and all necessary connections

must be attached before turning the unit on. Do not operate the unit if any components are

defective, missing or damaged. Check the orderly condition of the unit before switching it on.

The unit must not be operated without a filter element.

WARNING

Increased risk of explosion when filter unit switched off.

If the filter unit is left switched off while work is performed at the extraction points then dust

may collect at the extraction points. If the dusts in question are potentially explosive then this

increases the risk of explosion. In its risk assessment for the overall system, the Operator

must therefore ensure that

1) the filter unit is switched ON before any dust/fume-generating work is performed,

2) dust/fume-generating work is ceased promptly when the filter unit is switched OFF

either voluntarily or due to a fault message.

The Operator must also note whether shut-off valves are present between the extraction

point and the filter unit. These must be open while the work is being performed.

NOTICE

Damaged supply lines.

Make sure that the supply lines are protected against damage by forklift trucks and similar

events. Protect all supply lines from heat, moisture, oil and sharp edges.

5.1. Connecting the suction line and exhaust air line

For extracting the contaminated air, a suction line must be connected to the suction nozzle (see chapter

2.1).

WARNING

Explosion hazard!

The lines must be kept as short as possible and must be laid to the extraction point in a way

that optimizes the flow in order to prevent any deposits from forming in the lines. TEKA

Absaug und Entsorgungstechnologie GmbH expressly draws your attention to the fact that

extraction lines that have not demonstrably been configured by TEKA are not covered by the

filter unit’s explosion protection documentation. These must be configured for the application

in question.

If the air shall be directly sucked off by an upstream machine, the suction line must be connected to the

capture opening of the upstream machine.

The purified air is led back into the working environment via the exhaust air grille (see chapter 2.1)

(recirculation mode). If it is desired to lead the purified air out of the working environment, an exhaust air

pipe must be attached at the discharge grille.

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5.2. Electrical connection

WARNING

Explosion hazard!

The conductivity of lines and system parts must be checked in order to prevent static

charges from building up. Leakage resistances < 10^6 Ohm must be ensured.

The Operator must ensure the equipotential bonding of the unit. To do this, use the earthing

point on the back of the unit.

CAUTION

Health hazard arising from unintentional cleaning processes.

Switch on the control only if the unit is in operational condition.

NOTICE

Electric malfunction possible in cause of an incorrect power supply.

Pay attention to the admissible supply voltage. Please observe the specifications on the type

plate.

● Connect the mains cable (see chapter 2.1) to the power supply.

5.3. Precoating of the filter cartridges

For a longer service life of the filter cartridges, the new filter cartridges can be pretreated with filter aid.

However, this is not necessary when using nano filter cartridges.

Explosion hazard due to static charging of the filter cartridges. Precoating is only

admissible with slack lime.

Please read and refer to "Precoating new filter cartridges" in the chapter "Maintenance". There

you can also find a description of the operating method of the precoat.

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