Title: AV-1 alarm valve.pdf
NOTICE Cleaning of the Strainers after each operation of the alarms is especially important in the case of water sup- plies (such as lakes and rivers) having a large quantity of suspended matter. A clogged alarm line can prevent opera- tion of the alarms.Step 7. Notify all authorities responsi- ble for monitoring the installation that the fire protection system has been returned to service.TFP910 Page 17 of 20Sprinkler System Drain-Down Draining the sprinkler system must be done in accordance with the following procedure:Step 1. Close the main control valve, if this has not already been done.Step 2. Open the remote cross main or branch line vent connection. (Refer to Step 7 in the Installation section.)Step 3. Open the Main Drain Valve. Check first to see that the drainage water discharge will not cause dam- age or result in dangerous conditions.