Step 1. Close the Main Control Valve.
Step 2. Close the Diaphragm Chamber
Supply Control Valve.
Step 3. Open the Main Drain Valve,
System Drain Valve, and all auxiliary
drains in the system.Close the System
Drain Valve and auxiliary drain valves
after water ceases to discharge. Leave
the Main Drain Valve open.
Step 4. Depress the plunger of the
Automatic Drain Valve to verify that it
is open and that the DV-5 Valve is
completely drained.
Step 5. Clean the Strainer in the Diaphragm
Chamber Supply connection
by removing the clean-out plug and
strainer basket. The Strainer may be
flushed out by momentarily opening
the Diaphragm Chamber Supply Control
Valve.
Step 6. Reset the actuation system.
Manual Actuation — Push the operating
lever up; however, do not close the
hinged cover at this time.
Wet Pilot Actuation — Replace operated
pilot sprinklers and/or reset the
manual control stations.
NOTE
In order to prevent the possibility