Technical data

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TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [e-mail]
February, 2010
PREACTION SPRINKLER
SYSTEM
3. Open all auxiliary drain valves and inspectors test valve.
4. Silence alarms (optional). To silence electric alarms controlled by pressure switch and to silence
water motor alarm, close alarm shut-off valve.
NOTE: ELECTRIC ALARMS CONTROLLED BY A PRESSURE SWITCH INSTALLED IN THE ½” (15
mm) NPT CONNECTION FOR A NON-INTERRUPTIBLE ALARM PRESSURE SWITCH CANNOT BE
SHUT OFF UNTIL THE DELUGE VALVE IS RESET OR TAKEN OUT OF SERVICE.
NOTE: SPRINKLER SYSTEMS THAT HAVE BEEN SUBJECTED TO A FIRE MUST BE RETURNED TO
SERVICE AS SOON AS POSSIBLE. THE ENTIRE SYSTEM MUST BE INSPECTED FOR DAMAGE,
AND REPAIRED OR REPLACED AS NECESSARY.
5. Replace any thermostatic releases that have been damaged. Replace any fixed temperature re-
leases or pilot heads that have operated. To drain the hydraulic release piping (optional), pull the
handle inside the emergency release.
6. Replace any sprinklers and/or spray nozzles that have been damaged or exposed to fire conditions.
7. Perform all maintenance procedures recommended in technical data describing individual com-
ponents of the system that has operated.
8. Return the system to service as soon as possible. Refer to PLACING THE SYSTEM IN
SERVICE.
VII. TROUBLESHOOTING VIKING PREACTION SYSTEMS
A. System Trouble
Single Interlock Systems with Pneumatic Release: In the event of an air supply failure and slow leak-
age of air from the pneumatic release system, alarms connected to air supervisory switch will signal
a low air pressure condition. Failure to restore air supply to the pneumatic release system will result
in operation of the pneumatic actuator and the deluge valve will open. Similarly, if the release system
operates due to mechanical damage or malfunction, the deluge valve will open. Water will flow from
any open sprinklers and/or spray nozzles on the system. Water motor alarm and alarms connected to
alarm pressure switch will activate.
Single Interlock Systems with Electric Release: If a sprinkler opens prior to operation of the detec-
tion system, or any time supervisory pressure in the sprinkler piping is lost, the air supervisory switch
will signal a low air pressure condition, but the deluge valve will NOT open. If the detection system
operates due to mechanical damage or malfunction, the deluge valve will open but the water will be
contained in the sprinkler piping. Water motor alarm and alarms connected to alarm pressure switch
will activate.
Double Interlock Systems with Pneumatic/Pneumatic Release: If a sprinkler opens prior to operation
of a releasing device, or any time supervisory pressure in the sprinkler piping is lost, alarms connected
to the air supervisory switch will signal a low air pressure condition, but the deluge valve will NOT
open. If the pneumatic release system (alone) operates due to damage or malfunction, alarms con-
nected to the air supervisory switch will activate, but the deluge valve will NOT open.
Double Interlock Systems with Electric/Pneumatic Release: If a sprinkler opens prior to operation of
the detection system, or any time supervisory pressure in the sprinkler piping is lost, alarms connected
to air supervisory switch will signal a low air pressure condition but the deluge valve will NOT open.
If the electric detection system (alone) operates due to damage or malfunction, alarms connected to
system control panel will activate but the deluge valve will NOT open.
Double Interlock Systems with Electric/Pneu-Lectric Release: If a sprinkler opens prior to operation of
the detection system, or any time supervisory pressure in the sprinkler piping is lost, alarms connected
to air supervisory switch will signal a low-air pressure condition but the deluge valve will NOT open.
If the electric detection system (alone) operates due to damage or malfunction, alarms connected to
system control panel will activate, but the deluge valve will NOT open.