Tyco DV-5 Instruction Manual page 13

SYSTEM PIPING WITH AUTOMATIC SPRINKLERS - NORMALLY DRY
DELUGE VALVE
RELEASING PANEL
ALARM
(AUTOMATIC
CONTROL
CONTROL UNIT
WITH BATTERY
(NORMALLY
BACK-UP)
OPEN)
TO
MECHANICAL
POWER
ALARM
SUPPLY
(TYPICALLY WATERFLOW
230 VOLTS AC)
PRESSURE
ALARM
SWITCH
MAIN
DRAIN VALVE
(NORMALLY
CLOSED)
WATER
SUPPLY
PRESSURE
GAUGE
Quarterly Solenoid Valve
Test Procedure for
Electric Actuation
Proper operation of the Solenoid Valves
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 manufacturer's
instructions to energize the Solenoid
Valves.
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
pressure.
SYSTEM
PRESSURE
GAUGE
SYSTEM
DRAIN VALVE
(NORMALLY
CLOSED)
VALVE
AUTOMATIC
DRAIN VALVE
RESTRICTION
STRAINER
MODEL FSV-1
ALARM
FAIL-SAFE VALVE
TEST VALVE
(NORMALLY CLOSED)
(NORMALLY
CLOSED)
DIAPHRAGM CHAMBER
SUPPLY CONTROL VALVE
(NORMALLY OPEN)
DV-5 PREACTION TYPE A VALVE
FUNCTIONAL SYSTEM SCHEMATIC
Step 6. Reset the electric detection
system in accordance with the manu-
facturer's instructions to de-energize
the solenoid valve. Check the Solenoid
Valve drain for leaks. Correct any leaks
before proceeding to the next step.
Step 7. 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 Preac-
tion Type A Valve is ready to be placed
in service and the Main Control Valve
must then be fully opened.
CONTROL VALVE
(NORMALLY OPEN)
SYSTEM AIR
PRESSURE
(TYPICALLY 24 VOLTS DC,
GAUGE
MODEL
CV-1FR
CHECK STRAINER
VALVE
DV-5
DELUGE
VALVE
MAIN SUPPLY CONTROL/
WATER
SUPPLY
FIGURE 6
PNEUMATIC
ACTUATION
SOLENOID VALVE
NORMALLY OPEN;
ENERGIZED TO
CLOSE)
MODEL DP-1
DRY PILOT
ACTUATOR
(NORMALLY
OPEN)
ACTUATION LOOP
DRAIN VALVE
(NORMALLY
CLOSED)
SHUT-OFF VALVE
(NORMALLY OPEN)
Quarterly Solenoid Valve
Test Procedure for
Pneumatic Actuation Loop
(Detection Failure)
Proper operation of the Solenoid Valve
must be verified at least quarterly as
follows:
Step 1. Close the Main Control Valve.
Step 2. Open the System Drain Valve.
Step 3. Test the deluge releasing panel
in accordance with the manufacturer's
instructions to de-energize the Sole-
noid Valve.
Step 4. Verify that the flow of water
from the Dry Pilot 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
pressure.
Step 6. Reset the electric detection
system in accordance with the manu-
facturer's instructions to energize the
Solenoid Valve. Check the Dry Pilot
Valve drain for leaks. Correct any leaks
before proceeding to the next step.
TFP1484
Page 13 of 16
LOW AIR
PRESSURE
ALARM SWITCH
AIR SUPPLY
CONTROL VALVE
(NORMALLY
OPEN)
AUTOMATIC
AIR/NITROGEN
SUPPLY
SYSTEM
ACTUATION
SOLENOID VALVE
(TYPICALLY
24 VOLTS DC,
NORMALLY
CLOSED)
DIAPHRAGM
CHAMBER
PRESSURE
GAUGE
LOCAL
HYDRAULIC
MANUAL PULL
STATION