SVG3 - Digital Micron Vacuum Gauge
Contents
1. become superheated at which point its temperature will change The Superheat measurement is the best indication of refrigerant charge level in a fixed restrictor sys tem A TXV EXV system will keep the superheat constant There must be superheat present to ensure liquid does not flood the compressor Superheat measurements are taken on the suction line between the evaporator and compressor The compressor takes this low temperature low pressure slightly su perheated refrigerant and compresses it to a much higher temperature and pressure The highly superheated gas enters the condenser and rejects heat into the outside air The refrigerant con denses back into a liquid Once all of Heated Diode Refrigerant Leak Dectector Model SRL8 the gas is condensed into a liquid additional removal of heat causes a temperature drop that is known as subcooling TXV EXV systems are charged to subcooling since super heat is controlled by the throttle valve Subcooling measurements are taken on the liquid line between the condenser and TXV EXV Finally the subcooled liquid enters the restrictor and the cycle starts again EVAPORATOR COMPRESSOR CONDENSER Dual In Duct Psychrometer Model SDP2 Limited Warranty This meter is warranted against defects in material or workmanship for one year from date of purchase Fieldpiece will replace or repair the defective unit at its option subject to verification of2. Avoid using hoses with low loss fittings when evacuating a system 5 Avoid over tightening the female flare fitting of the SVG3 Over tightening may cause the rubber gasket to wear more quickly and create leaks It is not necessary to over tighten SVG3 to the extreme to create a good seal Maintenance Clean the exterior with a dry cloth Do not use liquid Battery Replacement Power off SVG3 Unscrew battery cover and replace the 4 AAA batteries A Battery Cover Screw ZU aa K I 7A mR Y _ Cleaning the Sensor 1 Turn off your SVG3 2 Remove the core valve depressor and rubber gasket A small pair of needle nose plyers can easily pull out the depressor and the gasket at the same time Be careful to not puncture or tear the gasket 3 Fill the cavity halfway with isopropyl rubbing alcohol 4 Use your index finger to cover female flare fitting and gently swirl and shake the alcohol within the cavity for about 15 to 30 seconds 5 Pour out the alcohol and let the vacuum sensor dry with the flare fitting facing down 6 Re insert core depressor and rubber gasket Screw in T fitting included to lock in the rubber gasket Note Do not use an object such as a cotton swab to clean the sensor This may damage the sensor For Service In the USA call Fieldpiece Instru ments for one price fix all out of war ranty service pricing Send check or money order for the amount quoted Send the m
3. Fielapiece Easy View Vacuum Gauge OPERATOR S MANUAL Model SVG3 SET a a T apaga mji HAB A cil il APO a E a Cup s J a Gm T MICRONS OF MERCURY VACUUM How to Use Normal Mode Measure deep vacuums to monitor your system evacua tions Deep vacuums help remove non condensable gases that can cause problems in a system There are many ways to connect to the system Fieldpiece recommends using a SCRT and the shortest vacuum rated hoses possible Fewer connec tions reduce the potential for leaks 1 Connect to system Techs typically prefer connect ing to the Schrader Core Removal Tool SCRT or an unused service port 2 Hold ly for 1 second to power ON the SVG3 3 The top display shows the vacuum in microns of mercury 4 The bottom display shows how fast the measure ment is increasing or decreasing microns of mercury per minute Quick Start 1 Power on your SVG3 by holding the XW button for 1 second 2 Connect to system directly to an unused service port a Schrader core removal tool SCRT or via hoses 3 View vacuum in microns of mercury on the top line and rate of change microns per minute on the bot tom line Certifications C Tick N22675 N22675 C cE RO we RoHS Compliant Recommended Setup Schrader Core Removal Tool tool not included Description Proper evacuation of any system exposed to atmosphere is critical to ensure efficient operation an
4. d the SVG3 is the right tool to help HVACR professionals verify they reach proper vacuum levels See your vacuum measurement clearly and easily with the newly designed easy view hook and backlight SVG3 is built for field use with its ruggedized rubber case Reducing connections mini mizes leaks so the SVG3 has a female 1 4 flare fitting with schrader depressor so you can connect it directly to a service port or your valve core removal tool Be alerted when you ve reached your desired vacuum levels with built in Hi and Lo Alarm functions Check for leaks with rate indication in microns per minute The HVACR professional can do more with confidence that he is doing the job right the first time Other Common Setups Hose to Removal Tool SET ALARM LOHI m m HHA Gazz D gt Gu jl a FP rs 4 4 seo Gad s Gee DD Gee Do U LLL Gas it f Top Line Live Vacuum Measurement in Microns of Mercury Hg Bottom Line Rate of Micron Change or Alarm Stopwatch apo Auto Power Off Enabled di Battery Life SET ALARM Alarm Set Mode ALARM Lo Low Alarm Mode acarm HI High Alarm Mode mn Rate of Micron Change Microns Per Minute Low and High Alarms Be alerted whe
5. eter freight prepaid to Fieldpiece Instruments Send proof of date and location of purchase for in warranty service The meter will be repaired or replaced at the option of Fieldpiece and returned via least cost transportation For international customers war ranty for products purchased outside of the U S should be handled through local distributors Fieldpiece Designed in USA MADE IN TAIWAN www fieldpiece com Fieldpiece Instruments Inc 2013 v22 Replacement Parts Rubber gasket and Schrader de pressor are user replaceable Worn out gaskets and depressors can lead to a bad seal Over tightening of the SVG3 female flare fitting may cause the rubber gasket to wear more quickly Replace if the rubber gasket becomes worn or the Shrader depres sor is not in the center Both these parts can easily be found at your local HVACR distributor 1 Remove both the Schrader depressor and rubber gasket from the flare fitting Dispose of worn rubber gasket A small pair of needle nose plyers can easily pull out the depressor and the gasket at the same time Be careful not damage the Schrader depressor 2 Re insert and center the Schraeder depressor into the flare fitting If the depressor does not stay centered replace with a new one 3 Drop in and position of the new rubber gasket standard 1 4 rubber gasket replacement part around the Schraeder depressor Push in with your finger 4 Lock O ring into place by scr
6. ewing in the included brass T fitting Do not over tighten More Great Tools from Fieldpiece Wireless 4 Port Manifold Model SMAN4 a StableSet FPC R pinata T1 T2HiLo Microns ME Alarm Target SH a uu A C Basics The Evaporator Condenser Restric tor Throttling valve and Compressor are the four basic components of an air conditioner Following one pound of refrigerant through the system shows the function of each compo nent Subcooled liquid refrigerant at high pressure enters the restrictor and is throttled to saturated refrigerant at a lower pressure The restrictor can be either a fixed or TXV EXV type The fixed type must be charged to a target superheat that varies with indoor and outdoor conditions TXV EXV systems must be charged to subcooling The evaporator capacity varies with the indoor heat load on a fixed restrictor The TXV EXV regulates the size of the restriction to maintain a constant superheat This essentially adjusts the capacity of the evaporator responding to the indoor heat load After the restrictor refrigerant enters the evaporator at a low tem perature and pressure and boils Wireless Refrigerant Scale Model SRS2C evaporates into a gas by absorbing heat from the indoor air The refriger ant stays at the same temperature and pressure until all the refrigerant evaporates into a gas After the refrig erant becomes a gas it will continue to absorb heat and
7. fied accuracy C lt 18 C or gt 28 C Over range OL is displayed Power 4 x AAA batteries NEDA 24A JIS UM4 IEC R03 Auto power off after 15 minutes of readings more than 10 000 microns if APO is active Battery life 40 hours standard use alkaline without backlight use Low battery indication tis displayed when the battery voltage drops below the operating level Vacuum Pressure Units of measure microns um of mercury Connector type Standard 1 4 female flare fitting T fitting included 3 male flare ports Range 0 to 9999 microns of mercury Accuracy 5 of reading 5 microns 50 to 1000 microns Resolution 1 micron 50 to 2000 microns 250 microns 2001 to 5000 microns 500 microns 5001 to 8000 microns 1000 microns 8001 to 9999 microns Rate Microns per minute Refresh rate 0 5 seconds Atmospheric pressure OL will be displayed Maximum overload pressure 500 psig Vacuum Tips Follow all manufacturer s evacu ation procedures over those in this manual in regards to specifications on how to evacuate systems To achieve a deep vacuum efficiently Fieldpiece recommends the following practices 1 Remove Schrader cores and core depressors from the service ports using a valve core removal tool purchased separately 2 Use the shortest vacuum rated hoses with the largest diameter available 3 Inspect rubber seals at both ends of your hoses for damage that may result in leakage 4
8. n you ve reached your desired vacuum levels Work on other tasks at the jobsite and let SVG3 alert you when the system is ready Activate the low alarm default 500 microns to alert when the vacuum has dropped to your desired micron level Activate the high alarm default 1000 microns to see how long it takes the system to stabilize after the vacuum pump has been isolated If the system does not stabilize over time you may have a leak in the system or your con nections The stopwatch will start when an alarm is activated It will restart when the low alarm has been reached to show how long you ve pulled a vacuum after reaching your desired micron level The Stopwatch will stop when the high alarm has been reached to show how long it took to rise to your high alarm value When an alarm is activated the UP or DOWN ARROW toggles the stopwatch and rate of change microns per min ute display APE De Controls Hold 1 second to power SVG3 on off Press lt 1 second to toggle backlight Press to activate Alarm Lo Alarm Hi and return to real time mode Hold 1 second to enter or exit Alarm Set mode Lock in selected digit and move to next in Alarm Set Mode Increase or decrease blinking digit in Alarm Set Mode Toggle to display stopwatch or rate of change when an alarm is activated in real time mode BACKLIGHT NOTE The backlight timer is automatically extended i 1 min when any button is pressed A short press of X
9. the defect This warranty does not apply to defects resulting from abuse ne glect accident unauthorized repair alteration or unreasonable use of the instrument Any implied warranties arising from the sale of a Fieldpiece product including but not limited to implied warranties of merchantability and fitness for a particular purpose are limited to the above Fieldpiece shall not be liable for loss of use of the instrument or other incidental or consequential damages expenses or economic loss or for any claim of such damage expenses or economic loss State laws vary The above limita tions or exclusions may not apply to you WIRELESS ENABLED Fieldpiece _ses7 lle am Poul Mafa fatali CSCIC C MaxminHoro iin Hz HFA my Wireless Clamp Meter Model C57
10. y toggles backlight on and off How to Activate the Alarms Press ALARM to activate low alarm Press ALARM again to deactivate low alarm and activate high alarm 3 Press ALARM again to deactivate high alarm and return to real time mode How to Set the Alarms The default low 500 microns and high 1000 microns alarm values can easily be set to whatever you want 1 Hold ALARM for 1 second to enter Alarm Set Mode The first digit of LO alarm will blink 2 Use ARROWS to change the blinking number Press ENTER to lock in a digit and move to the next digit Repeat for all LO alarm digits 3 When LO alarm is complete the first digit of HI alarm will blink Use ARROWS to change the blinking number Press ENTER to lock in a digit and move to the next digit Repeat for all HI alarm digits 4 When all digits of HI alarm are locked in you will automatically exit Alarm Set Mode and your customized alarm values will be saved Note Anytime while in Alarm Set Mode you can press ALARM to toggle between alarm HI set and alarm LO set Hold ALARM to exit Alarm Set Mode and save at any time Note Err will show if you try to set the HI alarm lower than the LO alarm or the LO alarm higher than the HI alarm Specifications General Operating temperature 32 F 0 C to 122 F 50 C at lt 75 RH Storage temperature 4 F to 140 F 20 C to 60 C 0 to 80 RH with battery removed Temperature coefficient 0 1 x speci
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