Series 756 FireLock
®
European Dry Valve Stations
11
PLACING THE SYSTEM IN SERVICE
1.
Open the system main-drain valve (4), as shown above.
Confirm that the system is drained.
2.
Close the system main-drain valve (4).
3.
Confirm that system drains are shut and the system is free
of leaks.
4.
If A Series 746 Dry Accelerator is used, confirm that the
isolation ball valve (14) to the accelerator is closed.
5.
Open the piston charge line ball valve (8), and confirm that
a steady flow of water is going through the Series 753-A Dry
Actuator.
6.
Close the piston charge line ball valve (8).
7.
Charge the system with air by turning on the compressor
or by opening the fast-fill ball valve on the air maintenance de-
vice (28) (fast-fill ball valve is shown above). Fill the system to the
appropriate pressure for the typical water supply pressure in the
area.
7a.
Confirm that the system is charging by observing the sys-
tem pressure gauge (7). If the gauge is not showing an increase
in air pressure, there is a leak or an opening in the line.
CAUTION
• Make sure the Series 756 Dry Valve is properly heated and protected from
freezing temperatures and physical damage.
Failure to follow these instructions could cause improper valve operation,
resulting in personal injury and/or property damage.
4
4
14
8
8
28
