TECHNICAL DATA
MODEL VXD SINGLE-
INTERLOCKED PREACTION
SYSTEM WITH ELECTRIC
RELEASE
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com
Page 9 of 13
Form No. F_051820 21.01.01 Rev 21.1
D. Quarterly "Low Air" Pressure Alarm Test
IMPORTANT
Do not operate the electric detection system during this test.
1. Notify the Authority Having Jurisdiction and those in the area affected by the test.
2. Close the main water supply valve.
NOTE: Closing the main water supply valve prevents operation of the deluge valve during the test.
3. Fully open the sprinkler system's test connection.
4. Verify that the low air alarms operate within an acceptable time period and continue without interruption.
5. Establish recommended pneumatic supervisory pressure to be maintained. Refer to section "6.1 Important Settings".
6. Reset the system release control panel to stop the alarms.
7. Return the system to service. Refer to section: "7. PLACING THE SYSTEM IN SERVICE".
9.3 Maintenance
A. After Each Operation:
1. 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.
2. Deluge Valves and trim that have been subjected to brackish water, salt water, foam/water solution, or any other corrosive
water supply, should be flushed with good quality fresh water before being returned to service.
3. Perform semi-annual maintenance after every operation.
B. Semi-Annually:
1. Remove the system from service.
2. Close the Main Water Supply Control Valve and Priming Valve.
3. Relieve pressure in the priming chamber by opening the emergency release Valve.
4. Inspect all trim for signs of corrosion and/or blockage. Clean and/or replace as required.
5. Clean and/or replace all strainer screens.
6. Refer to section: "7. PLACING THE SYSTEM IN SERVICE".
C. Every Fifth Year:
1. Internal inspection of Deluge Valves is recommended every five years unless inspections and tests indicate more frequent
internal inspections are required. Refer to the Model VXD Valve Technical Data Page.
2. Internal inspection of strainers, and restricted orifices is recommended every five years unless inspections and tests
indicate more frequent internal inspections are required.
3. Record and provide notification of inspection results as required by the Authority Having Jurisdiction.
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