Air maintenance device for dry pipe sprinkler systems, air supervised preaction systems, & dry pilot actuated deluge systems (4 pages)
Summary of Contents for General Air Products NGP-APV
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Prote tion itro en ener tors on Dry Pipe Sprinkler Systems Models: NGP-APV / NGP-PV-1 Installation, Operation and Maintenance Manual P r e device n gas monitoring port installed at the end of the piping system to provide a means...
The NGP-PV-1 Purge Valve assembly is comprised of a ½” manual ball valve, hex exhauster orifice, gas analyzer port, and quick connect cap to close the system. The NGP-APV Purge Valve includes these components as well as a battery operated automatic valve with a 2-week timer.
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1. Monitoring a. If not already connected, attach the gas analyzer using the quick-disconnect. b. Ensure the manual ball valve is open. If using the NGP-APV, insert a new 9- volt battery and move the slide switch to the open position.
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NGP-PV-1 (Manual Purge Valve) General Arrangement NGP-APV (Automatic Purge Valve) General Arrangement NOTES: • VALVE REQUIRES A 9 VOLT BATTERY TO OPERATE • TO OPEN THE VALVE AND BEGIN THE TWO WEEK TIMER, SLIDE THE SWITCH TO THE "OPEN VALVE" POSITION •...
Product Disposal Instructions: The sensor, batteries, and circuit board are not suitable for regular trash disposal. Return sensor to General Air Products for proper disposal or dispose according to local guidelines. Follow local guidelines for disposal of other components. WARRANTY The N2 analyzer is designed for oxygen delivery equipment and systems.
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INTRODUCTION The following instructions describe the function; operation and maintenance of the N2 Analyzer. The N2 analyzer is engineered for long life, maximum reliability and stable performance. NOTE: In order to obtain optimum performance from your analyzer, all operation and maintenance must be performed in accordance with these instructions.
A new calibration is required when: • The measured N2 percentage in 79.1% N2 is above 80.1% N2 • The measured N2 percentage in 79.1% N2 is below 78.1% N2 • If you are unsure about the displayed N2 percentage. (see Factors influencing accurate readings.) OPERATION PRINCIPALS The instrument display corresponds directly to the oxygen sensor.
Press and hold the Calibration Button for three seconds to manually force a new calibration. If unit repeats this error more than three times, contact General Air Products Customer Service for possible sensor replacement. CAL Err hi: Sensor voltage too high Press and hold the Calibration Button for three seconds to manually force a new calibration.
Changing the Oxygen Sensor Should the oxygen sensor require changing, the device will indicate this by presenting “Cal Err lo” on the display after initiating a calibration. To change the oxygen sensor, begin by removing the three screws from the back of the device. A #1 Phillips screwdriver is required to remove these screws.
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