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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
8. EMERGENCY INSTRUCTIONS
WARNING
WARNING: Placing a control valve or detection system out of service may eliminate the fire protection capabilities
of the system. Prior to proceeding, notify all Authorities Having Jurisdiction (AHJ). Consideration should be given to
employment of a fire patrol in the affected areas.
Refer to the appropriate technical data page and NFPA standards for complete care, handling, installation, and maintenance
instructions. For additional product and system information, Viking data pages and installation instructions are available
on the Viking Web site at www.vikinggroupinc.com.
To take system out of service (Refer to Figure 4):
After a fire, verify that the fire is OUT and that placing the system out of service has been authorized by the appropriate Authority
Having Jurisdiction.
1. Close the water supply control valve (not shown).
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.
2. Close the priming valve (A).
3. Replace any release devices, sprinklers and/or spray nozzles that have been damaged or have been exposed to fire conditions.
4. Perform all maintenance procedures recommended in Technical Data describing individual components of the system that
have operated.
5. Return the system to service as soon as possible. Refer to section 7: Placing the System In Service.
9. INSPECTIONS, TESTS, AND MAINTENANCE
WARNING
Any system maintenance that involves placing a control valve or detection system out of service may eliminate the
fire protection capabilities of that system. Prior to proceeding, notify all Authorities Having Jurisdiction. Consideration
should be given to employment of a fire patrol in the affected areas.
NOTICE
The owner is responsible for maintaining the fire protection system and devices in proper operating condition.
It is imperative that the system be inspected and tested on a regular basis in accordance with NFPA 25. Refer to current Viking
Technical Data describing individual components.
The frequency of the inspections may vary due to contaminated water supplies, corrosive water supplies, corrosive atmospheres,
as well as the condition of the air supply to the system. For minimum maintenance and inspection requirements, refer to NFPA 25.
In addition, the Authority Having Jurisdiction may have additional maintenance, testing, and inspection requirements that must be
followed.
9.1 Inspection
Weekly - Viking recommends a weekly visual inspection; check the following items.
• Verify that the main water supply control valve is open and that all other valves are in their normal operating position and
appropriately secured. (refer to Figure 1)
• Check for signs of mechanical damage, leakage, and/or corrosive activity. If detected, perform maintenance as required. If
necessary, replace the device.
• Verify that the valve and trim are adequately heated and protected from freezing and physical damage.
NOTE:
For normal operating position, refer to Figure 1.
Form No. F_051820
21.01.01
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Rev 21.1
Page 7 of 13
MODEL VXD SINGLE-
INTERLOCKED PREACTION
SYSTEM WITH ELECTRIC
RELEASE
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