MODEL M FRAME STYLE
SPRAY NOZZLES
TECHNICAL DATA
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: [email protected]
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com
Form No. F_011594 21.08.04 Rev 21.2
Page 5 of 5
K.
For Automatic (closed) and Open Frame Style Spray Nozzles:
Spray nozzles must be protected from mechanical damage.
Where open spray nozzles are used, care must be taken to prevent foreign materials from entering the orifice. Foreign materials
may accumulate and restrict or plug the waterway and may prevent proper operation of the spray nozzle. Wet pipe systems
must be provided with adequate heat. When installing Frame Style Spray Nozzles on dry systems, refer to the Installation
Guides and the Authority Having Jurisdiction.
5. OPERATION
During fire conditions, the heat-sensitive liquid in the glass bulb expands, causing the bulb to shatter, releasing the pip cap and
sealing spring assembly. Water flowing through the orifice strikes the special deflector to direct a specific spray pattern toward the
surface covered.
6. INSPECTIONS, TESTS AND MAINTENANCE
NOTICE
Refer to NFPA 25 for Inspection, Testing, and Maintenance requirements. The owner is responsible for maintaining
the fire protection system and devices in proper operating condition. For minimum maintenance and inspection
requirements, refer to recognized standards such as those produced by NFPA, LPC, and VdS which describe
care and maintenance of sprinkler systems. In addition, the Authority Having Jurisdiction may have additional
maintenance, testing and inspection requirements which must be followed.
A. Sprinklers and spray nozzles must be inspected on a regular basis for corrosion, mechanical damage, obstructions, paint, etc.
Where open spray nozzles are installed, verify that foreign materials (such as dust, dirt, etc.) do not restrict or plug the waterway.
Frequency of inspections may vary due to corrosive atmospheres, water supplies, and activity around the device.
B. Sprinklers or spray nozzles that have been filed painted, caulked, or mechanically damaged must be replaced immediately.
Sprinklers showing signs of corrosion shall be tested and/or replaced immediately as required. Installation standards require
sprinklers to be tested and, if necessary, replaced after a specified term of service. Refer to NFPA 25 and the Authority
Having Jurisdiction for the specified period of time after which testing and/or replacement is required. Never attempt to repair
or reassemble a sprinkler. Sprinklers that have operated cannot be reassembled or re-used, but must be replaced. When
replacement is necessary, use only new sprinklers with identical performance characteristics.
C. The sprinkler discharge pattern is critical for proper fire protection. Therefore, nothing should be hung from, attached to, or
otherwise obstruct the discharge pattern. All obstructions must be immediately removed or, if necessary, additional sprinklers
installed.
D. When replacing existing sprinklers, the system must be removed from service. Refer to the appropriate system description and/
or valve instructions. Prior to removing the system from service, notify all Authorities Having Jurisdiction. Consideration should
be given to employment of a fire patrol in the affected area.
1. Remove the system from service, drain all water, and relieve all pressure on the piping.
2. Use the special sprinkler wrench to remove the old sprinkler by turning it counterclockwise to unthread it from the piping.
3. Install the new sprinkler unit by following the instructions in section 4. INSTALLATION. Care must be taken to ensure
that the replacement sprinkler is the proper model and style, with the correct K-Factor, temperature rating, and response
characteristics. A fully stocked spare sprinkler cabinet should be provided for this purpose.
E. Place the system back in service and secure all valves. Check for and repair all leaks. 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. Sprinklers that have been exposed to corrosive products of combustion or high ambient
temperatures, but have not operated, should be replaced. Refer to the Authority Having Jurisdiction for minimum replacement
requirements.
7. AVAILABILITY
The Viking Frame Style Spray Nozzles are available through a network of domestic and international distributors. See The Viking
Corporation web site for the closest distributor or contact The Viking Corporation.
8. GUARANTEE
For details of warranty, refer to Viking’s current list price schedule or contact Viking directly.
Replaces Form No. F_011594 Rev 21.1
(Reinstated bushed orifice footnote)
