Title: AV-1 alarm valve.pdf
Step 5. Determine whether the water is flowing from the Alarm Port (Ref. Figure 1) or past the Alarm Test Valve. If the leakage is past the Alarm Test Valve, close the main control valve, and then repair or replace the Alarm Test Valve as necessary.Step 6. If it appears that the leakage noted in Step 5 is from the Alarm Port, drain the system in accordance with the prescribed procedure. After the system has been drained, remove the Handhole Cover.Step 7. While holding the Spring down by the coils, remove the Hinge Pin. Remove the Spring and Waterway Clapper Assembly.TFP910 Page 18 of 20Step 8. Using a light, check for and remove any debris that may have become lodged within the Seat Ring groove. Inspect the Seat Ring seat for any damage. If the Seat Ring has become dented across the seat then the Alarm Check Valve will have to be replaced. It is impractical to re-face a Seat Ring in the field.