Technical Article
What Should Be Included in a Daily Checklist for Helium Leak Testing Equipment?
A daily helium leak testing checklist should cover vacuum pumps, gas path, fixture sealing, standard leak, background value, alarm records, and operating environment.
Key Points
- The purpose of inspection is to detect stability changes before they affect production.
- Vacuum system, gas path, and fixture sealing are the core maintenance items.
- Background value, standard leak response, and abnormal records should be checked before production.
Check the vacuum system
Vacuum pump oil level, pump sound, pump-down time, vacuum gauge reading, and pipe connections affect testing stability. If pump-down time becomes longer or vacuum value is abnormal, check pumps, valves, seals, and pipe leakage first.
Check gas path and fixture sealing
Helium piping, compressed air, connectors, seals, and clamping condition affect repeatability. Fixture wear, aged seals, or contaminated interfaces may cause false judgment, retesting, and cycle fluctuation.
Check standard leak and background
Before production, customers can verify response with a standard leak and record background value changes. If background rises abnormally, check helium residue, exhaust conditions, gas-path leakage, and residual helium in parts.
Keep abnormal records
Inspection records should include date, equipment status, abnormal symptoms, actions, and recovery result. DROIDE SHANGHAI recommends creating a practical daily and periodic maintenance checklist based on the actual equipment configuration.
FAQ
Should standard leak verification be done every day?
It depends on quality requirements and production frequency. High-requirement lines should include it in pre-shift inspection.
Why does background value rise suddenly?
Common causes include helium residue, gas-path leakage, poor exhaust, residual helium in parts, or fixture sealing problems.
How long should inspection records be kept?
Keep records according to the quality system and customer traceability requirements, at least covering recent production and abnormal tracking cycles.
Related Topics
- helium leak testing equipment
- daily maintenance
- vacuum pump
- standard leak
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