when to replace the sealing components of a digital pressure switch

I. Visual Inspection‌

Signs of Aging‌

Hardening, cracking, yellowing, or surface roughness of the sealing ring.

Loss of elasticity (fails to return to original shape when compressed).

Physical Damage‌

Visible distortion, notches, or permanent deformation.

Scratches or cracks in the sealing groove or valve body (requires concurrent inspection).

II. Functional Testing‌

Leakage Symptoms‌

Presence of fluid/gas seepage around the device.

Abnormal pressure fluctuations (e.g., slow pressurization or inability to maintain stability).

Operational Abnormalities‌

Increased resistance or sluggish response during switching.

Seal failure causing functional issues (e.g., frequent compressor cycling).

III. System Performance Verification‌

Dashboard Alerts‌: Fault indicators triggered by pressure switch-controlled systems (e.g., AC failure, brake warning lights).

Pressure Testing‌: Simulate operating conditions to verify seal integrity under critical pressure.

IV. Replacement Recommendations‌

Maintenance Intervals‌

Conduct quarterly inspections of sealing systems; high-frequency components may require shorter intervals.

Safety Considerations‌

Immediate replacement is mandatory if any leakage is detected in pressure vessel seals.

Note‌: If seal damage coincides with pressure switch malfunctions or accuracy degradation, verify whether the pressure-sensing element is also compromised.

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