27
7.
Close the piston charge line ball valve.
8.
Open the system main drain valve to drain any water
that has accumulated and to release system air pressure.
NOTE:
If the system has operated, open the remote sys-
tem test valve (inspector’s test connection) and any auxil-
iary drain valves.
9.
Close the slow-fill ball valve.
10. Activate the electrical portion of the system to
energize the solenoid, or push down on the auto
drain knob to remove pressure in the piston
charge line.
11.
After all pressure is released from the system, loosen
cover plate bolts, and remove cover plate.
12.
Rotate clapper out of valve body. Inspect clapper seal
and seal retaining ring. Wipe away any contaminants,
dirt, and mineral deposits. Clean any holes in the valve
body seat ring that are plugged.
DO NOT USE SOL-
VENTS OR ABRASIVES.
Piston
Charge Line
Ball Valve
System Main
Drain Valve
Slow-Fill
Ball Valve
• Make sure valve is depressurized and drained
before removing cover plate bolts.
The cover plate will blow off if these bolts are removed
while the valve is pressurized, resulting in serious
personal injury and/or property damage.
• Do not use solvents or abrasives on or near the valve body seat ring.
Failure to follow this instruction could prevent the clapper from sealing properly, re-
sulting in improper operation, valve leakage, and/or property damage.
DISCONTINUED
PRODUCT
