3
10. Open the water supply main control valve (3) fully.
CAUTION
• The alarm line ball valve must be open to allow alarms to acti-
vate.
Failure to follow this instruction will prevent alarms from activating
during a fire condition, resulting in personal injury and/or property
damage.
11. Open the alarm line ball valve (11). Lock the ball valve, if required.
12. Confirm that all valves are in their normal operating positions (refer
to table below).
Valve Normal Operating Position
Alarm Line Ball Valve Open (Lockable)
Water Supply Main Control Valve Open
System Main Drain Valve Closed
System Test Valve Closed
13. Notify the authority having jurisdiction, remote station alarm moni-
tors, and those in the affected area that the system is in service.
I-751.VDS / Series 751 FireLock
™
European Alarm Check Valve Stations / Installation, Maintenance, and Testing Manual
I-751.VDS_8 REV_F
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