Maintenance

The SENTRY io does not require any special maintenance except for cleaning and periodic functional checks.

Periodic Functional Test

The following functional tests should be performed at least annually:

• Verify wiring, terminal connections, and stability of mounting for all integral safety equipment, including, but not limited to:
  • Power supplies
  • Control modules
  • Field detection devices
  • Signaling/output devices
  • Accessories connected to field and signaling devices
• See System Verification for initial verification steps.
• Verify proper system operation by performing a full, functional test of all component devices of the safety system, ensuring that the proper levels of alarming occur.
• Fault/Malfunction circuit operation should be verified.

Calibration Check

Check the calibration of the sensor(s) connected to the input(s) of the SENTRY io according to the recommended schedule in the device manual(s).

Cleaning

Ensure that any cleaning or maintenance operations on the SENTRY io and sensor accessories follow ESD-safe procedures.

WARNING! 

If cleaning requires the use of conductive liquids, ensure that the SENTRY io is fully powered off. Ensure that instruments and accessories are fully dry before use.

Failure to follow this warning can result in serious personal injury or death.

Storage

The SENTRY io enclosure should be stored in a clean, dry area that is within the temperature and humidity ranges quoted in Technical Specifications. You should insert dust caps into any vacant cable entry holes during storage.