LEV User Manual

The LEV supplier or the company that made the LEV System should also supply a user manual. This should be part of the commissioning process. In particular, the manual should include details on how to run, maintain and check the LEV correctly. The HSE state that this should be in English.

In addition, it should contain the name and address of the company that made it and details of a contact.

It should also contain the designation of the system. This doesn’t have to be the serial number, but should include its EC declaration of conformity.

01782 614236

Purpose of the LEV User manual

The LEV user manual should clearly state:

The purpose of the system and the method of control.

It should also contain the following information about the LEV.

Details of the LEV parts for example, the materials and serial numbers.
The designed face and duct velocities.
Supply of makeup air.
The test points and the checks required. Including alarms checks.
If it uses water, then the testing requirements of the water.
Light levels at the work position.
Cleaning plans for the filters and fans and checks for blocked ductwork.
advice on preventing dust build up.
Training required for the operator, such as, the capture distance.
Any requirements for disposal for waste it produces.

Diagrams

The diagram in the LEV user manual must identify the parts that it’s made of. Such as:

Position of hoods.
Flexible and Rigid ductwork runs.
Bends and junctions.
Duct contractions and expansions.
Dampers and Valves.
Monitoring equipment such as manometers.
Positions of test points.
Sampling positions.
Air cleaner.
Air mover.
Discharge to atmosphere and also the workplace.
Alarms.

Operation and Use

The LEV User Manual should contain advice about its use and operation, such as:

Adjustable controls like dampers.
The position of adjustable hoods because they can affect the systems performance.
Dampers Hood position Sash opening heights.
How the operator should use it.
The position of process equipment.
Methods of working.
Other factors such as draughts from open doors and workplace fans.

Checking and Maintenance

Checking and maintenance

The user manual should also include details of ongoing maintenance of the LEV. This should also be covered in the LEV Logbook and be carried out by a competent person:

Condition of the ductwork.
Mechanical integrity such as corrosion of parts.
Damage to door seals.
Condition of dampers.
How clean the hoods, canopies and ductwork should be.
Operation of monitors such as airflow indicators.
Pressure relief systems.
Lighting in enclosures and booths.
Noise levels.
Correct operation of alarms

Details for the LEV Test

The User Manual should consist of details for the LEV Test, such as

What to check, where to test and when to test (COSHH Regulation 9).
How to complete the test.
Commissioning information so that a comparison can be made.

Technical performance

If available, the technical performance test will compare against

The design static pressure at each of the hoods and ducts.
The design face and duct velocities.

Synergy can also carry out workplace air monitoring at the correct frequency to ensure that you LEV is providing effective control.

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LEV User Manual

Purpose of the LEV User manual

Diagrams

Operation and Use

Checking and maintenance

The User Manual should consist of details for the LEV Test, such as

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