Series 751 FireLock
®
European Alarm Check Valve Stations
7
EXTERNAL INSPECTION
Monthly Inspection
Victaulic recommends a visual inspection of the alarm check
valve and trim on a monthly basis.
1.
Record the system’s pressure and the water supply’s
pressure. It is normal for the system’s water pressure to be high-
er than the water supply’s pressure due to the check valve trap-
ping 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
corrosion is present, replace the affected parts.
3.
Confirm that the valve and trim are not subject to freezing
conditions.
4.
If the valve is installed in a variable pressure system, con-
firm that no excessive leakage is occurring from the restricted
orifice/alarm line drain. It is normal for some leakage, since pres-
sure surges lift the clapper and allow water into the intermediate
chamber.
5. Verify that all valves are in their normal operating positions.
REQUIRED TESTS
Main Drain Test
The authority having jurisdiction in your area may require the
main drain test on a more frequent basis. Verify these require-
ments by contacting the authority having jurisdiction in your
area.
1. Notify the authority having jurisdiction, remote station
alarm monitors, and anyone in the affected area that the main
drain test will be performed.
2. Confirm that sufficient drainage is in place for a full-flow
drain test.
3. Record the water supply pressure.
4. Close the alarm line ball valve (11).
5. Open the system main drain valve (14) fully.
5a. With the system main drain valve fully open, record the
water supply pressure as the residual pressure.
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 seri-
ous personal injury and/or property damage.
NOTICE
• The owner is responsible for maintaining the fire protection system in
proper operating condition.
• It is important that the system is inspected regularly, according to proper
procedures.
• The Victaulic Series 751 Alarm Check Valve and trim must not be exposed
to foreign material, corrosive environments, freezing conditions, contami-
nated water supplies, or any other condition that could impair proper sys-
tem operation.
• Modify the frequency of inspections in the presence of any environmental
conditions that could degrade system operation.
• The authority having jurisdiction may have additional maintenance, inspec-
tion, and test requirements.
NOTICE
• If you do not want to activate alarms, close the alarm line ball valve
11
14
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