Supco Vacuum fittings

VG64S DIGITAL VACUUM GAUGE FEATURES • Ultra fine resolution (as low as 1 Micron) • ½ second response time • Auto shut off • Convenient built in hanger • Easy access cleaning port SPECIFICATIONS Sensor Type Thermistor Connector Type Standard 1/4” female flare swivel. Also Included: 1/4” x 1/4” male flare union Vacuum Range 0 – 12,000 Microns (0 – 1,600 Pascals) with vacuum increasing/ decreasing indicator when above 12,000 Microns Scale Microns, PSI, InHg, milliBars, Pascals, Torr, milliTorr Resolution 0-200: 1 Micron 201-500: 5 Microns 501-1,000: 10 Microns 1,001-2,000: 50 Microns 2,001-5,000: 250 Microns 5,001-8,000: 500 Microns 8,001-12,000: 1,000 Microns Operating 35°F to 125°F ( 2°C to 52°C) Temp.Range Overpressure 500 PSI maximum Accuracy +/-10% or +/-10 Microns, whichever is larger (0 to 1000 microns) Power Source 9 Volt Alkaline Battery (not included) Battery Life Over 35 Hours Auto Shutoff After 10 minutes when vacuum reading is above 12,000 Microns (12 Torr) Weight 6.7 ounces Dimensions 6½²H X 3²W X 1¼²D OPTIONAL ACCESSORIES 9 Volt AC Adapter Part number 10475 Vinyl Case Part number 10740 OPERATING CONTROLS CONNECTING THE VG64S Vacuum Gauge Service Hose VG64S TO THE • Turning the vacuum gauge ON: Press and hold the ON VACUUM SYSTEM button for approximately 3 seconds, until the display The VG64S should be Main Shut Off Valve Gauge Valve appears. connected to the To System vacuum system at Vacuum Pump Valve • Turning the vacuum gauge OFF: Press the OFF button. To the vacuum port. Valve For prolong battery life, when vacuum reading is above Pressurizing System or 12,000 Microns for approximately 10 minutes, the Breaking Vacuum Vacuum Pump To Atmosphere VG64S will automatically turn OFF. • Changing the scale: Press the Scale button to change CLEANING THE VG64S VACUUM SENSOR the display to the next scale. The scale order is: It is recommended that the VG64S sensor be cleaned periodically Microns, PSI, Inches of mercury (InHg), milliBars, to maintain unit accuracy. Oil and other contaminants reduce the Pascals, Torr and milliTorr. The VG64S will keep the accuracy of the VG64S unit. Follow the instructions below for cleaning. scale settings even if the power is turned OFF. • Use an eyedropper to pour approximately 1 teaspoons of ordinary rubbing alcohol into the vacuum port. • Shake the VG64S unit for approximately 10 seconds. A slight UNDERSTANDING THE DISPLAY movement of the vacuum sensor in the case is normal and does not affect the internal connection in any way. • When the vacuum reading is above 12,000 Microns • Empty the alcohol and air dry the sensor. (1,600 Pascals), the first line of the display shows "Atm." The second line displays a bar graph to indicate the direction in which the vacuum is moving. When the bar CHECKING HVAC SYSTEMS FOR LEAKS graph is moving from left to right, the pressure is When checking a system for leaks use only copper tubing and a increasing. When the bar graph is moving from right to vacuum proof valve. Generally standard hoses will not hold a left, the pressure is decreasing. The speed of the bar vacuum. If using the blank-off valve on the vacuum pump check it graph indicates how fast the pressure is increasing or for leaks periodically. At the beginning of the test the VG64S reading decreasing. The bar graph indicator may be inaccurate may increase due to a system equalization. The vacuum reading for a few seconds after the evacuation of the system has should hold after a minimum of 5 minutes. If the reading continues begun. to increase it may indicate a leak in the system. • The bar graph disappears if the vacuum does not change for approximately 10 seconds. • When the vacuum reading is below 12,000 Microns (1,600 Pascals), the vacuum in the selected units is displayed.