Series 751 FireLock® Alarm Check Valve
10
EXTERNAL INSPECTION
Monthly Inspection
Victaulic recommends a visual inspection of the alarm check valve and
trim on a monthly basis, as required by the current NFPA-25 code.
1.
Record the system’s pressure and the water supply’s pressure. It
is normal for the system’s water pressure to be higher than the water
supply’s pressure due to the check valve trapping pressure surges
above the clapper. Confirm that the water supply’s pressure is in the
range of normal pressures observed in the area. A significant loss in
supply pressure could indicate an adverse condition in the water
supply.
2.
Check for mechanical damage or corrosion. If damage or corro-
sion is present, replace the affected parts.
3.
Confirm that the valve and trim cannot be exposed to freezing
conditions.
4.
If the valve is installed in a variable pressure system, confirm that
there is no excessive leakage occurring from the restricted orifice. It is
normal for some leakage because pressure surges lift the clapper and
allow water into the intermediate chamber.
5.
Confirm that all valves are in their normal operating positions
(refer to table below).
REQUIRED TESTS
Main Drain Test
Perform the main drain test annually, as required by the current NFPA-
25 code. The authority having jurisdiction in the area may require these
tests on a more frequent basis. Verify these requirements by contacting
the authority having jurisdiction in the affected area.
1.
Notify the authority having jurisdiction, remote station alarm mon-
itors, and those in the affected area that the main drain test will be per-
formed.
2.
Confirm that sufficient drainage is in place for a full-flow drain test.
3.
Record the water supply’s pressure and the system’s water pres-
sure.
4.
Close the alarm line ball valve.
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 cause
serious personal injury and/or property damage.
NOTICE
• The owner is responsible for maintaining the fire protection system
in proper operation condition.
• It is important to inspect the system regularly, according to proper
procedures.
• The Victaulic Series 751 Alarm Check Valve and trim must not be
exposed to foreign material, corrosive environments, freezing con-
ditions, contaminated water supplies, or any other condition that
could impair system operation.
• Modify the frequency of inspections in the presence of any environ-
mental conditions that could degrade system operation.
• The authority having jurisdiction may have additional maintenance,
inspection, and test requirements.
Valve
Normal Operating Position
Alarm Line Ball Valve
Open
Alarm Test Ball Valve
Closed
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 cause
serious personal injury and/or property damage.
NOTICE
• If you do not want alarms to activate, close the alarm line ball valve.
Alarm Line
Ball Valve