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 6 of 13
Form No. F_051820 21.01.01 Rev 21.1
7. PLACING THE SYSTEM IN SERVICE
Placing the Valve in Service:
1. Verify the following:
• The system main water supply control valve (not shown) is closed.
• The system has been properly drained and main drain (J) is open.
• The emergency release (F) is closed.
2. Close the system main drain (J).
3. Restore supervisory pressure to the sprinkler piping. Verify that the 1/2" valve in the air maintenance device by-pass trim is
closed and that both the 1/4" valves are open.
4. Establish a normal condition on the release control panel.
5. Open the priming valve (A).
6. Open flow test valve (G).
7. Slowly and partially open main water supply control valve (not shown).
NOTE: Opening the main water supply valve too quickly can create excessive pressure causing the valve to trip.
8. When full flow develops from the flow test valve (G), close the valve.
9. Fully open and secure the main water supply control valve.
10. Verify that all valves are in their normal operating position.
11. Verify that no water is discharging into the drain cup.
12. Check for, and repair all leaks.
13. On new installations, those systems that have been placed out of service, or where new equipment has been installed, trip test
the system to verify that all equipment functions properly. Refer to Annual Trip Tests,section 9.2.C.
14. After completing a trip test, perform semi-annual maintenance. Refer to section 9.3.B.
CAUTION
necessary precautions to prevent damage.
Figure 4: Placing the System in Service
A
F
G
J
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