Series 756 FireLock
®
European Dry Valve Stations
15
EXTERNAL INSPECTION
Weekly Inspection
Perform a visual inspection on the valve and trim on a weekly
basis.
NOTE:
If the dry system is equipped with a low-pressure
alarm, monthly inspections may be sufficient. Consult with the
local authority having jurisdiction for specific requirements.
Monthly Inspection
1.
Record the system air pressure and the water supply pres-
sure. Confirm that the water supply pressure is in the range of
normal pressures observed in the area. Significant loss in water
supply pressure could indicate an adverse condition in the
water supply. Confirm the proper water-to-air ratio is being main-
tained.
2.
Confirm that there is no leakage from the intermediate
valve chamber. No water or air should flow from the restricted
orifice/alarm line drain (19).
3.
Check for mechanical damage or corrosion. If damage or
corrosion is present, replace the affected parts.
4.
Confirm that the valve and trim are not subject to freezing
conditions.
5.
Verify that all valves are in their normal operating positions
(refer to table below).
6.
If the system includes a Series 746 Dry Accelerator (14),
record the pressure in the accelerator’s air chamber. This pres-
sure should equal the system air pressure within the allowable
tolerance of the gauges. If the air chamber’s pressure is below
the system air pressure, follow the “Troubleshooting” section on
page 27.
REQUIRED TESTS
Water Flow Alarm Test
The authority having jurisdiction in your area may require the wa-
ter flow alarm 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 water
flow alarm test will be performed.
2.
Close the alarm line ball valve (17).
3.
Open the alarm test line ball valve (18). Confirm that me-
chanical and electrical alarms provided are activated and that
remote monitoring stations, if provided, receive an alarm signal.
4.
Close the alarm test line ball valve (18) after proper oper-
ation of all alarms is verified.
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 756 Dry Valve and trim must not be exposed to foreign
material, corrosive environments, freezing conditions, contaminated water
supplies, or any other condition that could impair proper system 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.
Valve
Normal Operating Position
Piston Charge Line Ball Valve
Open (Lockable)
Alarm Line Ball Valve
Open (Lockable)
Alarm Test Ball Valve
Closed
17
18
18
