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Bulletin 254
May 2019

Page 7 of 7

www.reliablesprinkler.com

Guarantee

For the Reliable Automatic Sprinkler Co., Inc. guarantee, terms, 
and conditions, visit www.reliablesprinkler.com.

Patents

Patent Pending (Model NS-ASAM)

Ordering Information

Specify the following when ordering.

        

Model NS-ASAM

  

        

Model NS-Pak

 

        

Nitrogen Maintenance Device

 

Pressure Switch Kit: None, UL Listed, ULC Listed

Maintenance

The owner is responsible for maintaining all parts of the fire pro-
tection system in proper operating condition. Any system main-
tenance or testing that involves placing a system component out 
of service may eliminate the fire protection that is provided by the 
fire protection system.

The Reliable Model NS-ASAM, NS-Pak, and Nitrogen Regulator 
shall periodically be given a thorough inspection and test. NFPA 
25, “Inspection, Testing, and Maintenance of Water Based Fire 
Protection Systems,” provides minimum maintenance require-
ments. System components shall be tested, operated, cleaned 
and inspected at least annually and parts replaced as required.

Caution

The transportation, handling, installation, and restraint of 
high-pressure cylinders must be performed in accordance with 
local, state, and federal standards.

Summary of Contents for NS-ASAM

Page 1: ...easy wall mounting Nitrogen Regulator For bottled nitrogen use on single or multiple systems Low pressure switch for nitrogen source General Description Reliable Nitrogen Automatic Pressure Maintenance Devices are designed to connect nitrogen cylinders to dry pipe and preaction systems The NS ASAM is designed to connect a primary and secondary cylinder or bank of cylinders to sin gle or multiple s...

Page 2: ...l admit nitrogen or air from the primary source until the primary source depletes to a pres sure of approximately 80 psi 5 5 bar Nitrogen or air from the secondary source is admitted through the NS ASAM when the pressure of the nitrogen or air supplied by the primary source is less than approximately 80 psi 5 5 bar A pressure switch in the NS ASAM is factory set to activate at a pressure of 90 psi...

Page 3: ...stem pressure fully close the Bypass Valve 11 Slowly turn the adjustment screw of the System Pressure Regulator clockwise to increase pressure to the level required by the system Tighten the lock nut on the System Pressure Regulator see note 2 12 If desired supervise the contacts of the Pressure Switch in accordance with NFPA 72 to provide notification that the primary nitrogen or air source is de...

Page 4: ...00 psi 6 9 bar The high pressure regulator supplies a field adjustable System Pressure Regulator in the NS Pak controlling pressure to the system As the cylinder pressure depletes below 90 psi 6 2 bar the Inlet Pressure Switch activates to indicate low nitrogen pressure and notify the owner that the nitrogen supply requires servicing The field adjustable System Pressure Switch switch is factory pr...

Page 5: ...nnect the NS Pak outlet to the open port provided for pneumatic supply to the sprinkler system see note 1 9 Before applying pressure to the system turn the adjustment screw on the System Pressure Regulator within the NS Pak fully counterclockwise 10 Open the cylinder control valve and supply inlet valve in the NS Pak 11 Open the Bypass Valve and the NS Pak Outlet Valve to allow nitrogen to flow in...

Page 6: ...ce Device fully counterclockwise 8 Open the cylinder control valve 9 Open the bypass valve of the Pressure Maintenance De vice to allow nitrogen to flow into system piping 10 When the system pressure rises to within 2 psi of required system pressure fully close the bypass valve 11 Slowly turn the adjustment screw of the Pressure Mainte nance Device regulator clockwise to increase pressure to the l...

Page 7: ...tion Any system main tenance or testing that involves placing a system component out of service may eliminate the fire protection that is provided by the fire protection system The Reliable Model NS ASAM NS Pak and Nitrogen Regulator shall periodically be given a thorough inspection and test NFPA 25 Inspection Testing and Maintenance of Water Based Fire Protection Systems provides minimum maintena...

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