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Manufacturing / Industrial • Inspections

Instrument Air Dryer - 4 - Year Preventive Maintenance

A 4-year preventive maintenance check of the instrument air dryer to inspect, service, and replace all critical desiccant, valve, and purge system components, ensuring consistent moisture removal performance and reliable protection of downstream instrumentation throughout the extended service interval.
TULS Dairy
03/06/2026

Instrument Air Dryer - 4 - Year Preventive Maintenance

This procedure outlines the 4-year maintenance requirements for the instrument air dryer, including replacement of major components such as valves, O-rings, and purge nozzles. It provides step-by-step instructions to safely service both towers and return the dryer to proper operation.

    Replace exhaust valve diaphragm and solenoid valves

    Replace shuttle valve and o-rings.

    Replace purge nozzles

    Purge nozzle replacement procedure

Source: TULS Dairy (Community Member)

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