REQUIRED INTERNAL INSPECTION
Internal components should be inspected every five years or as required
by national standards. The authority having jurisdiction in the area may
require these inspections on a more frequent basis. Verify these require-
ments by contacting the authority having jurisdiction in the affected
area.
WARNING
• Depressurize and drain the piping system
before attempting to remove the cover plate
from the alarm check valve.
Failure to follow this instruction could result in
serious personal injury and/or property damage.
CAUTION
• Any activities that require taking the valve out
of service may eliminate the fire protection
provided.
• Before servicing or testing the system, notify
the authority having jurisdiction.
• Consideration of a fire patrol should be given
in the affected areas.
Failure to follow these instructions could result
in serious personal injury and/or property
damage.
1. Notify the authority having jurisdiction, remote station alarm
monitors, and those in the affected area that the system is being
taken out of service.
3
2. Close the water supply main control valve (3) to take the system
out of service.
3. Open the system main drain valve (8), and allow the system to
drain completely. It may be necessary to open the remote system
test valve (inspector's test connection) and any auxiliary drains in
order to drain the system completely.
WARNING
• Make sure the valve is depressurized and
drained completely before the cover plate bolts
are removed.
The cover plate could blow off if the cover plate
bolts are removed while the valve is pressur-
ized, resulting in serious personal injury and/or
property damage.
4. After all pressure is released from the system, loosen the cover
plate bolts slowly. NOTE: DO NOT remove any cover plate bolts
until all cover plate bolts are loosened.
4a. Remove all cover plate bolts, along with the cover plate and cover
plate gasket.
I-751.VDS / Series 751 FireLock
™
European Alarm Check Valve Stations / Installation, Maintenance, and Testing Manual
I-751.VDS_13REV_F
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