Tyco DV-5 Manual page 23

Valve Setting
Procedure
Perform Steps 1 through 10 when ini-
tially setting the DV-5 Deluge Valve;
after an operational test of the fire pro-
tection system; or after system opera-
tion due to a fire. Refer to Figure 4, 5,
or 6, as applicable.
Step 1. Close the Stop Valve (B).
Step 2. Close the Diaphragm Supply
Valve (P). For Dry Pilot Actuation, close
the Dry Pilot Air Supply Valve (T).
Step 3. Open the Main Drain Valve (D),
System Drain Valve (E), and all auxil-
iary drains in the system. Close the
System Drain Valve (E) and auxiliary
drain valves after water ceases to dis-
charge. Leave the Main Drain Valve (D)
open.
At this time make certain that the Pres-
sure Gauge Valves are open, the Alarm
Test Valve (G) is closed, and the Alarm
Control Valve (H) is open.
Step 4. Depress the plunger of the
Automatic Drain Valve (F) to verify that
it is open and that the DV-5 Valve is
completely drained.
Step 5. Clean the Diaphragm Supply
Strainer (Q) by removing the clean-
out plug and strainer basket. The Dia-
phragm Supply Strainer (Q) may be
flushed out by momentarily opening
the Diaphragm Supply Valve (P).
Step 6. Reset the actuation system.
• Manual Actuation — Push the oper-
ating lever up; however, do not close
the hinged cover at this time.
• Wet Pilot Actuation — Replace oper-
ated pilot sprinklers and/or reset the
remote manual control stations.
• Dry Pilot Actuation — Replace oper-
ated pilot sprinklers and/or reset
the remote manual control stations.
Re-establish dry pilot pneumatic
pressure.
• Electric Actuation — Reset the elec-
tric detection system in accordance
with the manufacturer's instructions
to de-energize the solenoid valve.
NOTICE
In order to prevent the possibility of a
subsequent operation of an overheated
solder type pilot sprinkler, any solder
type pilot sprinklers that were possibly
exposed to a temperature greater than
their maximum rated ambient must be
replaced.
Step 7. Open the Diaphragm Supply
Valve (P) and allow time for full pres-
sure to build up in the DV-5 Diaphragm
Chamber.
Step 8. Operate (open) the Manual
Control Station (M) to vent trapped air
from the DV-5 Diaphragm Chamber. If
necessary, first open the hinged cover,
and then fully pull down on the oper-
ating lever. Slowly close the operating
lever, by pushing it up, after aerated
water ceases to discharge from the
Manual Control Station. Close the
hinged cover and insert a new break
rod in the small hole through the top of
the enclosing box.
For Wet Pilot Actuation, crack open
the Inspector's Test Connection and
any other vent valves on the wet pilot
line to relieve trapped air. After the dis-
charge of air has stopped, close the
vent valves and the Inspector's Test
Connection.
Step 9. Verify the ability for the DV-5
Diaphragm to hold pressure as follows:
With the diaphragm chamber pressur-
ized per Step 8, temporarily close the
Diaphragm Supply Valve (P), and then
observe the Diaphragm Gauge (K) 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 pro-
ceeding to the next step.
If the Diaphragm Chamber Pressure
Gauge (K) indicates no drop in pres-
sure, re-open the Diaphragm Supply
Valve (P) and proceed to the next step.
Step 10. Partially open the Stop Valve
(B). Close the Main Drain Valve (D) as
soon as water discharges from the
drain connection. Observe the Auto-
matic Drain Valve (F) 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 Stop Valve
must then be fully opened.
Page 23 of 26
NOTICE
When the Stop Valve (B) is opened,
the pressure on the DV-5 Diaphragm
Chamber may increase. This increase
in pressure is normal, and if the pres-
sure is greater than 17,2 bar, the pres-
sure is to be relieved by partially and
temporarily opening the Manual Control
Station (M); however, do not allow
the pressure as indicated on the Dia-
phragm Gauge (K) to drop below the
supply pressure shown on the Water
Supply Gauge (J), since this action may
result in tripping of the DV-5 Valve.
After setting a fire protection system,
notify the proper authorities and advise
those responsible for monitoring pro-
prietary and/or central station alarms.
TFP1335