Valve Setting; Care And Maintenance - Tyco DV-5 Manual

Valve Setting

Procedure
Steps 1 through 11 are to be performed
when initially setting the DV-5 Deluge
Valve; after an operational test of the
fire protection system; or, after system
operation due to a fire.
NOTE: When the system is using ei-
ther a seawater or brackish water sup-
ply, it is recommended that the system
be thoroughly flushed with clean fresh
water. Following this recommendation
will increase the service life of the DV-5
Valve and Trim.
Step 1. Close the Main Control Valve.
Step 2. Close the Diaphragm Chamber
Supply Control Valve.
Step 3. Open the Main Drain Valve,
System Drain Valve, and all auxiliary
drains in the system. Close the System
Drain Valve and auxiliary drain valves
after water ceases to discharge. Leave
the Main Drain Valve open.
Step 4. Depress the plunger of the Au-
tomatic Drain Valve to verify that it is
open and that the DV-5 Valve is com-
pletely drained.
Step 5. Clean the Strainer in the Dia-
phragm Chamber Supply connection
by removing the clean-out plug and
strainer basket. The Strainer may be
flushed out by momentarily opening
the Diaphragm Chamber Supply Con-
trol Valve.
Step 6. Reset the actuation system.
Manual Actuation — Push the operat-
ing lever up; however, do not close the
hinged cover at this time.
Electric Actuation — Reset the electric
detection system in accordance with
the manufacturer's instructions to de-
energize the solenoid valve.
Step 7. Open the Diaphragm Chamber
Supply Control Valve and allow time
for full pressure to build up in the Dia-
phragm Chamber.
Step 8. Operate (open) the Manu-
al Control Station to vent trapped air
from the Diaphragm Chamber. If nec-
essary, 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
Solenoid Valve. Any leaks must be cor-
rected before proceeding to the next
step.
Step 10. 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 Chamber Supply Control
Valve, and then 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 pro-
ceeding to the next step.
If the Diaphragm Chamber Pressure
Gauge indicates no drop in pressure,
re-open the Diaphragm Chamber Sup-
ply Control Valve and proceed to the
next step.
Step 11. Slowly open the Main Con-
trol 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.
NOTE: 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
(17,2 bar), the pressure is to be relieved
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 pres-
sure shown on the Water Supply Pres-
sure Gauge, since this action may re-
sult 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.
Care and
Maintenance
The following procedures and inspec-
tions must be performed as indicated,
in addition to any specific requirements
of the NFPA, and any impairment must
be immediately corrected.
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 au-
thorities and all personnel who may be
affected by this action must be notified.
Reset the DV-5 Deluge Valve in accor-
dance with the Valve Setting Procedure
section.
Page 13 of 14
The owner is responsible for the in-
spection, testing, and maintenance of
their fire protection system and devices
in compliance with this document, as
well as with the applicable standards
of the National Fire Protection Associa-
tion (e.g., NFPA 25), in addition to the
standards of any authority having juris-
diction. Contact the installing contrac-
tor or product manufacturer with any
questions.
It is recommended that automatic
sprinkler systems be inspected, tested,
and maintained by a qualified Inspec-
tion Service in accordance with local
requirements and/or national codes.
NOTICE
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.
When the system is using either a sea-
water or brackish water supply, inter-
nal and external inspection of the DV-5
Valve and Trim is essential. Parts show-
ing any signs of corrosion must be re-
placed to ensure the integrity of the
system.
Annual Operation Test Procedure
Proper operation of the DV-5 Valve (i.e.,
opening of the DV-5 Valve as during 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 Valve Releas-
ing Panel in accordance with the man-
ufacturer's instructions to energize the
solenoid valve.
NOTE: Be prepared to quickly perform
Steps 3, 4, and 5, if water must be pre-
vented from flowing beyond the riser.
Step 3. Verify that the DV-5 Valve has
tripped, as indicated by the flow of wa-
ter into the system.
Step 4. Close the system's Main Con-
trol Valve.
Step 5. Close the Diaphragm Chamber
Supply Control Valve.
Step 6. Reset the DV-5 Deluge Valve
in accordance with the Valve Setting
Procedure.
TFP1320