Laminar Flow Hood Repair: Sash Cable Replacement & Lamp Assembly Repair with Full Certification

A customer’s laminar flow hood required servicing due to a broken sash cable and damaged lamp base and fluorescent tube.
After completing the repair work, READY performed a full performance certification to ensure the unit met safety and airflow requirements according to international standards.

This article summarizes the repair work and the post-maintenance validation tests.

Repair Services Performed

1. Sash Cable Replacement

• Removal of the damaged sash wire

• Installation of a new cable

• Adjustment of sash balance and movement

• Verification that the sash can hold at the recommended working height

2. Lamp Base & Fluorescent Tube Replacement

• Removal of old lamp socket and tube

• Installation and wiring of new lamp base

• Brightness and flicker check

• Function test of lighting system

Post-Maintenance Certification Tests

After completing the repair, READY performed full certification following NSF/EN requirements.

1. Downflow Velocity Test

Ensures clean air flows uniformly across the work zone.

2. UV Lamp Function Test (if applicable)

Confirms proper operation and UV output condition.

3. Noise, Light, and Vibration Measurements

Evaluates operator comfort and workspace stability.

What You Receive in the Certification Report

READY provides a complete certification report including:

• Measured airflow data and pass/fail evaluation

• Downflow & inflow velocity records

• HEPA leak test results

• Smoke pattern photos (if required)

• Recommendations if any abnormalities are found

All results can be used as internal QA documentation for audits and compliance.

☎︎ Tel: 02-8228-0131

✉️ Email: Ready_lab@outlook.com