17. If a Series 746-LPA Dry Accelerator (28) is installed, open the
isolation ball valve.
18. If a Series 746-LPA Dry Accelerator (28) is installed, close the ¼-
turn vent ball valve. This will set the accelerator.
19. Observe the system air pressure over a 24-hour period to confirm
system integrity. If there is degradation is system air pressure, find
and correct all leaks.
20. Open the alarm line ball valve (16).
CAUTION
Take precautions when opening the water supply main control
valve, since water will flow from all open system valves.
Failure to follow this instruction could result in property damage.
•
21. Open the water supply main control valve (2) slowly.
22. Confirm that there is no leakage from the intermediate valve cham-
ber. The restricted orifice/alarm line drain (18) should not be leak-
ing water or air.
23. If water is flowing from the restricted orifice/alarm line drain (18),
close the water supply main control valve (2), and start over at step
1. Refer to the "Troubleshooting" section on page 26.
I-756LPA.VDS_14
FireLock
®
European Dry Valve Stations
SERIES 756
WITH SERIES 776 LOW-PRESSURE ACTUATOR
I-756LPA.VDS
INSTALLATION, MAINTENANCE, AND TESTING MANUAL
www.victaulic.com
VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2006 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
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