UNITED Nitrogen Pac SC-W, Установка, наладка, обслуживание

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UNITED FIRE SYSTEMS - NITROGEN-
PAC™
MODEL SC-W
INSTALLATION, COMMISSIONING, AND MAINTENANCE MANUAL
REVISION 1.01 MAR 2021 - P/N 30-NPWICM-000
53
4. COMMISSIONING
. The process of system commissioning is important for achieving satisfactory results.
DANGER
The Model SC-W assembly must be installed in an adequately ventilated area. The device creates a 30% to 40% oxygen
stream which may pose a flammability problem in an oxygen-sensitive environment. Ensure the area surrounding the
Model SC-W assembly is adequately ventilated. Failure to do so creates an increased flammability hazard that can lead
to serious property damage, serious injury, or death.
DANGER
Rapid release of nitrogen gas into an enclosed space displaces oxygen and can cause an asphyxiation hazard.
Inhalation of nitrogen in increased concentration can result in unconsciousness and asphyxiation without warning. All
areas containing nitrogen system equipment MUST be adequately ventilated. All nitrogen gas leaks discovered during
installation, commissioning, and maintenance of
NITROGEN-
PAC™
nitrogen generating equipment MUST be corrected
promptly. Failure to comply can result in death or serious personal injury.
IMPORTANT
Prior to commissioning the Model SC-W nitrogen generating system, the owner, sprinkler contractor, or other sprinkler
service professional shall inspect and test the sprinkler piping to establish that maximum leakage is within the allowable
limit set by NFPA Standard 13.
THIS LEAKAGE RATE IS MAXIMUM 1-1/2 PSIG LOSS IN 24 HOURS STARTING AT
40 PSIG. If excessive leakage exists, correct leaks and re-test. Nitrogen generating systems do not reverse pipe
corrosion, stop leaks, or overcome excessive leakage.
IMPORTANT
The needle valve in the Model SC-W assembly is adjusted at the factory for the production of 98% nitrogen by the device,
and requires no further field adjustments.
DO NOT DISTURB THE SETTING OF THIS NEEDLE VALVE! Moving the
needle valve can render the device incapable of producing 98% nitrogen. Proper re-adjustment of the needle valve
requires training and instrumentation. At any time, if it appears that the Model SC-W assembly is not generating 98%
nitrogen, contact
UNITED Fire Systems for assistance.
IMPORTANT
Temperature fluctuations can affect nitrogen purity readings. Differences between readings taken at different times may
be due to changes in temperature at the Model SC-W assembly and at the reading location. Differences between
readings should not be immediately interpreted as a system fault.