Material Drying
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PA6 Molecular Sieve Regeneration Maintenance
Problembeschreibung
After the dryer has been used for one year, the drying effect drops significantly, and extending the drying time cannot eliminate silver streaks
Ursachenanalyse
After long-term use, the adsorption capacity of the molecular sieve decays; when regeneration is incomplete, residual moisture accumulates, the drying air dew point gradually rises, and the decline in drying capacity is a gradual process that cannot be compensated by extending time
Lösung
Establish a molecular sieve maintenance system: test the outlet dew point every six months, check the regeneration heater and regeneration cycle when the dew point is above -30°C, and replace the molecular sieve after 2-3 years of use or when the dew point cannot be restored
Wichtigste Erkenntnis
The core of dryer maintenance is the molecular sieve condition, and dew point monitoring is the basis for judgment; after confirming effectiveness, fix the parameters and practices into the work instructions to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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