LEV Testing & Servicing FAQs

Local exhaust ventilation captures airborne contaminants at or close to the source and removes them through a designed extraction system. Effective control depends on the process, hood design, airflow, correct use and maintenance.

Cost depends on the process, hazards, extraction points, installation conditions and agreed scope. Send site and process details so we can establish what assessment is needed before giving a quotation.

Follow the equipment instructions and the maintenance plan for the contaminant and duty. Use specified condition indicators and competent inspection to decide when cleaning or replacement is needed. Appearance alone is insufficient, and there is no universal replacement interval.

Assess the substances, tasks and exposure-control needs; agree the hood and extraction design; then install and commission the system against defined performance criteria. Provide operating instructions, baseline measurements and a maintenance plan.

Premier LEV can discuss replacement filters and components. Supply the equipment details and contaminant information so compatibility and any installation or follow-up testing requirements can be checked.

Use the operator checks, airflow indicators and acceptable ranges defined in the system instructions and commissioning information. Investigate damage, changed readings, unusual noise or visible escape promptly. Feeling airflow or seeing a clean filter does not establish adequate capture; routine checks do not replace thorough examination and testing.

Most LEV used under COSHH must undergo thorough examination and testing at intervals no longer than 14 months. Certain specified processes require shorter intervals. Apply the relevant legal requirements and risk assessment, and continue routine checks and maintenance between examinations.

COSHH requires exposure to hazardous substances to be prevented or adequately controlled. Where LEV is a control measure, maintain it in efficient working order and arrange competent thorough examination and testing at the required interval. Keep examination records for at least five years, act on defects and provide suitable information and training. An examination report alone does not establish compliance with every COSHH duty.

Contact Premier LEV with your site postcode, system details, required scope and preferred dates. We will confirm availability and any access or preparation requirements before booking.

Review the report with the examiner, identify affected work and control exposure immediately. Stop affected work if adequate control cannot be maintained. Arrange competent repairs and verification or retesting appropriate to the defect and change. Do not assume that completing a repair alone establishes safe performance.

Ask us about instruction or training for your equipment and operators. Agree the scope in advance, including correct use, routine checks, reporting defects and the limitations of the controls.

We can assess improvement options against the process and intended performance. Changes to hoods, ducting, fans or filters must be checked as a system; a stronger fan alone may not improve capture. Agree commissioning or retesting after changes.