Storage

  • Store in its original packaging, protected from shocks.
  • Store in a clean and dry location, protected from bad weather.

Inspection

WARNING
Hazardous pressure

To avoid any accidental actuation of the system, disable the system before performing any work.

  • Check that the product and its connections (to the discharge network and the pilot circuit) are in good condition.
  • Actuate the valve manually or pneumatically and check that the connecting shaft can fully rotate.
  • Check that the limit switches can properly scan the end position of the pneumatic drive.
    Sample routine:
    • Control the selector valve pneumatically: measure the time until the drive has completed the rotation of the shaft. The switching time must be below or equal to the target time (≤ 3 s).
    • Visually inspect the selector valve: there must be no damage, leakage, contamination or loose parts.
    • Document the test results.
    • Reset the selector valve pneumatically or manually by bringing it completely back to the closed position (ready for operation).

The product must be inspected as often as required by applicable local regulations. For more information, refer to the maintenance documentation.

 

WARNING
Risk of damaged seal

Do not use the selector valve in the closed position to test the pressure or tightness of the zone distributor downstream of the selector valve.

After an actuation

  • Reset the selector valve; turn the shaft for manual emergency actuation using a suitable tool to completely close the selector valve.

If the selector valve is hard to operate or stuck, use an open-end wrench with an extension (such as a piece of tubing) to increase leverage.
Recommended alternative: Remove the sintered filter from port [4] and pressurize it with compressed air (max. 10 bar).