first open the hinged cover, and then
fully pull down on the operating lever.
SLOWLY close the operating lever, by
pushing it up, after aerated water
ceases to discharge from the Manual
Control Station drain tubing. Close the
hinged cover and insert a new break
rod in the small hole through the top of
the enclosing box.
Step 9. Inspect the drain connections
from the Manual Control Station and
the Solenoid Valve. Any leaks must be
corrected before proceeding to the
next step.
Step 10. Verify the ability for the DV-5
Diaphragm to hold pressure as fol-
lows:
With the diaphragm chamber pressur-
ized per Step 8, temporarily close the
Diaphragm Chamber Supply Control
Valve, and monitor the Diaphragm
Chamber Pressure Gauge for a drop in
pressure.
If a drop in pressure is noted, the DV-5
Diaphragm is to be replaced and/or
any leaks must be corrected before
proceeding to the next step.
If the Diaphragm Chamber Pressure
Gauge does not indicate a drop in
pressure, re-open the Diaphragm
Chamber Supply Control Valve and
proceed to the next step.
Step 11. Replace operated automatic
sprinklers on the system piping and
then open the Supervisory Air Supply
Control Valve and allow the system to
automatically re-establish its nominal
air pressure of 10 psi (0,69 bar). Ob-
serve the Automatic Drain Valve for
leaks. If there are leaks, deter-
mine/correct the cause of the leakage
problem within the Riser Check Valve.
NOTE
In order to prevent the possibility of a
subsequent operation of an over-
heated solder type automatic sprin-
kler, any solder type automatic sprin-
klers that were possibly exposed to a
temperature greater than their maxi-
mum rated ambient must be replaced.
Step 12. Slowly open the Main Control
Valve. Close the Main Drain Valve as
soon as water discharges from the
drain connection. Observe the Auto-
matic Drain Valve for leaks. If there are
leaks, determine/correct the cause of
the leakage problem. If there are no
leaks, the DV-5 Valve is ready to be
placed in service and the Main Control
Valve must then be fully opened.
NOTES
When the Main Control Valve is
opened, the pressure on the Dia-
phragm Chamber may increase. This
increase in pressure is normal, and if
the pressure is greater than 250 psi
(17,2bar),thepressureistobere-
lieved by partially and temporarily
opening the Manual Control Station;
however, do not allow the pressure as
indicated on the Diaphragm Chamber
Pressure Gauge to drop below the
supply pressure shown on the Water
Supply Pressure Gauge, since this ac-
tion may result in tripping of the DV-5
Valve.
After setting a fire protection system,
notify the proper authorities and ad-
vise those responsible for monitoring
proprietary and/or central station
alarms.
Care and
Maintenance
The following procedures, inspections,
and maintenance must be performed
as indicated, in addition to any specific
requirements of the NFPA, and any
impairment must be immediately cor-
rected.
The owner is responsible for the in-
spection, testing, and maintenance of
their fire protection system and de-
vices in compliance with this docu-
ment, as well as with the applicable
standards of the National Fire Protec-
tion Association (e.g., NFPA 25), in
addition to the standards of any
authority having jurisdiction. The in-
stalling contractor or product manufac-
turer should be contacted relative to
any questions.
It is recommended that automatic
sprinkler systems be inspected,
tested, and maintained by a qualified
Inspection Service in accordance with
local requirements and/or national
codes.
NOTES
Some of the procedures outlined in
this section will result in operation of
the associated alarms. Consequently,
notification must first be given to the
owner and the fire department, central
station, or other signal station to which
the alarms are connected.
Before closing a fire protection system
main control valve for maintenance
work on the fire protection system that
it controls, permission to shut down the
affected fire protection systems must
first be obtained from the proper
authorities and all personnel who may
be affected by this action must be no-
tified.
Annual Operation Test Procedure
Proper operation of the DV-5 Valve
(i.e., opening of the DV-5 Valve as dur-
ing a fire condition) must be verified at
least once a year as follows:
Step 1. If water must be prevented
from flowing beyond the riser, perform
the following steps.
• Close the Main Control Valve. Open
the Main Drain Valve.
• Open the Main Control Valve one
turn beyond the position at which
water just begins to flow from the
Main Drain Valve.
• Close the Main Drain Valve.
Step 2. Test the deluge releasing
panel in accordance with the manufac-
turer’s instructions to energize the So-
lenoid Valve.
NOTE
Be prepared to quickly perform Steps
3, 4, and 5, if water must be prevented
from flowing beyond the riser.
Step 3. Verify that the DV-5 Valve has
tripped, as indicated by the flow of
water into the system.
Step 4. Close the system’s Main Con-
trol Valve.
Step 5. Close the Diaphragm Cham-
ber Supply Control Valve and the Su-
pervisory Air Supply Control Valve.
Step 6. Reset the DV-5 Deluge Valve
in accordance with the Valve Setting
Procedure.
Quarterly Waterflow Alarm Test
Procedure
Testing of the system waterflow alarms
must be performed quarterly. To test
the waterflow alarm, open the Alarm
Test Valve, which will allow a flow of
water to the Waterflow Pressure Alarm
Switch and/or Water Motor Alarm.
Upon satisfactory completion of the
test, close the Alarm Test Valve.
Quarterly Solenoid Valve Test
Procedure For Electric Actuation
Proper operation of the Solenoid Valve
for electric actuation must be verified
at least quarterly as follows:
Step 1. Close the Main Control Valve.
Step 2. Open the Main Drain Valve.
Step 3. Test the deluge releasing
panel in accordance with the manufac-
turer’s instructions to energize the so-
lenoid valve.
Step 4. Verify that the flow of water
from the Solenoid Valve drain connec-
tion increases to a full flow.
Step 5. Verify that the Diaphragm
Chamber pressure has decreased to
below 25% of the water supply pres-
sure.
Step 6. Reset the electric detection
Page 12 of 14
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