Fieldpiece - Allied Supply
Contents
1. RS 45 R438A MO099 R500 R502 R503 R507A 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 of the defect This warranty does not apply to defects resulting from abuse neglect 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 limitations or exclusions may not apply to you Maintenance Clean the exterior with a dry cloth Do not use liquid Battery Replacement The battery must be replaced when the battery life indicator __ is empty Turn your SMAN off and replace with 6 AA batteries Cleaning the Sensors SMAN3 Over time the vacuum sensor of the SMAN3 may become contaminated with dirt oil and other contaminents introduced from pulling vacuums 1 Never use an object such as a cotton swab to clean the sensor you may cause damage to the sensor 2 Open all knobs valves and cap all the ports except2. pressure readings are not at zero perform a Pressure Zeroing adjustment before performing this advanced calibration 1 Press circular button until your SMAN enters T1 T2 Direct mode 2 Plug in a K type thermocouple into T1 A bead type thermocouple like the ATB1 is recommended 3 Connect the SMAN to a refrigerant cylinder of a known single refrigerant using an EPA approved service hose Be sure to open both HIGH and LOW side valves on your manifold and cap the unused ports If caps are not available you can connect both ends of a refrigerant hose to the two unused caps Note you will lose some refrigerant into the hose using this method 4 Press the REFRIGERANT button to match the refrigerant of the cylinder you are using 5 Attach bead type thermocouple to the side of the cylinder using tape It is recommended to attach in the middle of the cylinder Important Let the temperature of the thermocouple stabilize to the refrigerant temperature for 1 to 2 minutes or until stable Note For best results the refrigerant cylinder should have been stored in a stable ambient condition environment for at least 24 hours 6 Open the refrigerant cylinder The pressure inside cylinder should now be displayed on both HIGH and LOW side pressure sensors 7 Press the CAL Test Pressure button Your SMAN refers to the built in P T charts to compare the temperature of the refrigerant Specifications maga Stated accuracy 73 F 9 F 23 C 5
3. pump and the system then power on your SMAN3 2 Draw a vacuum on the system The SMAN will automatically sense the negative pressure and display the vacuum in microns Indicators for increasing or decreasing pressure will be shown Press Alarm button to toggle between the High Hi alarm the Low Lo alarm and no alarm No Display of Lo or Hi means alarm is off Note The stopwatch will start when an alarm is selected Pressing Alarm will reset the stopwatch 4 When the rate of change in pressure is less than 1 micron per 10 seconds Stable will appear in the lower left corner of the display Additional Tips To achieve a deep vacuum as quickly as possible Use the shortest hoses with the largest diameter available Remove Schrader cores and core depressors Core removal tools like the MegaFlow Valve Core Removal Tool can be purchased to help with this process Inspect the rubber seals at both ends of your hoses for damage that may result in leakage Do not use hoses with low loss fittings when evacuating or pulling a vacuum on a system Set Vacuum Alarms SMAN3 Hold the ALARM button for one second to enter Alarm Set mode 5 Press the ALARM button to toggle between Alarm Hi and Lo 3 Use ARROW button to select the value and press ENTER to lock in each digit Once last digit in Alarm Lo is locked your SMAN will automatically revert to normal testing mode w No Ww gt What is Superheat and Subcooling Why
4. C lt 75 RH Temperature coefficient 0 1 x specified accuracy per C 0 C to 18 C 28 C to 50 C per 0 6 F 32 F to 64 F 82 F to 122 F Operating environment 32 F to 122 F 0 C to 50 C at lt 75 relative humidity Storage temperature 4 F to 140 F 20 C to 60 C 0 to 80 RH with battery removed Display size 5 inches diagonal Backlight Blue On for 1 minute unless turned off manually Battery 6 x AA Battery life below based on alkaline type Battery life SMAN2 Approx 500 hours without backlight Battery life SMAN3 Approx 135 hours without backlight Low battery indication __ is displayed when the battery voltage drops below the operating level Auto Shut off 30 minutes of inactivity when APO is activated Over range OL or OL is displayed Weight 3 05 Ibs 1 38 kg Pressure Connector Type Standard 1 4 NPT male flare fitting Range 29 HgV to 500Psig English 74 cmHgV to 0 to 4000KPa Metric Resolution 0 1 psi inHg 1 kPa cmHg Accuracy 29 HgV to 0 HgV 0 2 HgV 74 cmHgV to 0 cmHgV 0 4 cmHgV 0 to 200 Psig 1 Psi 0 to 1378 KPa 7 KPa 200 to 500 Psig 0 3 1 Psi 1378 to 3447KPa 0 3 7 Kpa Maximum Overload pressure 800 psig Units Psig kPa inHg and cmHg to the vapor saturation temperature If the pressures on your SMAN are within 3psi of the pressure corresponding to the vapor saturation temperature the SMAN will adjust the pressure sensor li
5. Do I Need to Measure It Superheat is the difference between the actual temperature of the refrigerant gas as it leaves the evaporator and the boiling point of the refrigerant After boiling the refrigerant continues to heat up The number of degrees it heats up after boiling is called the superheat Under worst case conditions low load for fixed orifice systems the refrigerant in the evaporator boils off near the end of the evaporator coil To make sure liquid doesn t enter the compressor under the worst case condition low load the refrigerator or A C manufacturers publish charts indicating what the superheat should be at a given indoor wet bulb measurement and outdoor air temperature Measuring superheat is your best indication on a fixed orifice system of the proper refrigerant charge and operating conditions If everything else is working properly and the actual superheat is too high add refrigerant If it s too low evacuate refrigerant Subcooling is the difference between the boiling point of the refrigerant in the condenser and the actual temperature of the refrigerant Calibration Temperature To calibrate your SMAN temperature thermocouples adjust the pot on the front of the meter labeled T1 Cal or T2 Cal The best way to calibrate is to match to a known temperature Ice water is very close to 32 F and is readily available Accuracies of one degree or better are easily obtained 1 Stabilize a large cup
6. Fieldpiece Digital Manifold amp Vacuum Gauge OPERATOR S MANUAL Models SMAN2 SMAN3 1 Insert K type thermocouple plugs here 2 Temperature calibration pots 3 Press to zero atmospheric pressure 4 Presstolinear adjust pressure curve See Advanced Pressure Calibration section Press to engage backlight Hold when powering on to toggle Auto Power Off Press hold to cycle through refrigerants Hold 1 second to toggle power on off Press up or down arrow to adjust values Press to confirm selection For the SMAN2 hold 1 second to adjust units 10 Press to turn on off the Hi Lo vacuum alarms and hold to change alarm settings 11 Press to toggle through temperature tests 12 Press to adjust units SMAN3 13 Turn clockwise to close Low side port 14 Turn clockwise to close High side port nn ON OV Quick Start Power on your SMAN by holding the ON OFF button for 1 second 2 Select desired units English or Metric by pressing the UNITS button SMAN3 or hold ing the ENTER button for 1 second SMAN2 3 Calibrate temperature and or pressure as needed See calibration sections for more details 4 Connect to the system 5 Press the circular button to select between Actual Superheat and Subcooling Target Superheat Direct Temperature Display T1T2 Direct or Saturation Temperature Display Certifications N22675 C Tick N22675 CE ic RoHS Compliant Functions Standard Pr
7. MAN combines high pressure manifold gauges a superheat subcooling calculator micron gauge for vacuum SMAN3 and dual temperature measurements into one easy to use instrument Your SMAN calculates and displays target superheat and actual superheat to ensure proper charging of a unit Your SMAN can also display the liquid and vapor saturation temperatures in Saturation mode to help you trouble shoot your system Your SMAN is designed to meet the demands of the HVAC R technician with a ruggedized rubber boot for durability a strong metal hanger for easy storage and a high quality water resistant nylon pouch A bright blue backlight and very large easily viewable display lets you see your measurements in any work environment SMAN has a very intuitive user interface and extremely long battery life Your SMAN comes pre programmed with the most accurate P T charts for 39 of the most common refrigerants in the field so you are always prepared for any job T1 T2 Direct 1 Press circular button until T1 and T2 are shown 2 Plug in any K type thermocouple into T1 and or T2 3 Read the temperature directly from the display Target Superheat Target Superheat is only used for charging fixed orifice air conditioning systems Your SMAN allows you to input indoor wet bulb IDWB and outdoor dry bulb ODDB temperatures manually in real time using K type thermocouples or a combination of both to calculate the Target Superheat Your SMAN will
8. detect ifa thermocouple is plugged in or not Unplugging the thermocouple lead s at any time sends the SMAN into manual input mode and plugging them in at any time automatically sends the SMAN to input directly from the thermocouples Input temperatures with K type thermocouples 1 Press circular button until Target SH is shown in the bottom center of display Plug ATWB1 Wet bulb K type thermocouple into T1 and ATA1 Dry bulb K type thermocouple into T2 Press ENTER The IDWB will display the real time temperature measured from T1 Use the ARROW button to select the temperature you want to input first either IDWB or ODDB For IDWB input wet the sock of the ATWB1 Clip it to the return of the evaporator between the filter and coil When the wet bulb temperature reaches its lowest point and stabilizes press ENTER to lock the reading If the inputted temperature is below the wet bulb range OL will blink If the inputted temperature is above the wet bulb range OL will blink Retake the measurement if OL or OL is displayed N w gt Display III il re re ps Pps aa f op Gee emHg Psig Pressure na Kpa Pressure Kilopascals inHg Negative Pressure inches of mercury cmHg NegativePressure cm of mercury Cel AE F C r VSAT in in IDWB SH Superheat t T1 Direct vsat Vapor Saturation Temperature iws Indoor Wet Bulb Stableset FY FY Ff crc Alarm fol il ci f Microns n Co HiLo tm L L Targ
9. essure 1 Connect your SMAN to the system using EPA approved 1 4in refrigerant hoses 2 Read pressures directly from the upper display Superheat and Subcooling Press circular button to cycle through temperature modes until SH and SC are shown The SMAN can show superheat and subcooling simultaneously 2 Choose the appropriate refrigerant using the REFRIGERANT button 3 Connect the K type thermocouple and EPA approved refrigerant hoses to your SMAN 4 Connect your SMAN to the system Superheat Hand tighten low side hose to suction line service port Place the thermocouple on the suction line between the evaporator and compressor no closer than 6 inches to compressor Subcooling Hand tighten high side hose to liquid line service port Attach the thermocouple on the liquid line between the condenser and expansion valve TXV as close to the service port as possible After turning the system on or making any adjustments to the system wait 15 minutes before charging by superheat or subcooling to ensure that the system is stable and running normally Add or remove refrigerant using the low and high side valves as needed Let system stabilize again for 15 minutes Saturation Shows vapor VSAT and liquid LSAT saturation temperatures calculated from the pressures measured and the refrigerant selected wm Description Your SMAN is the portable digital refrigerant manifold and vacuum gauge SMAN3 for A C and refrigeration service Your S
10. et SH Stable Micron Reading Has Stabilized Set Set Mode Alam Alarm Mode Hi High Alarm Lo Low Alarm Microns Vacuum Microns of Mercury TargetSH Target Superheat wm For ODDB input clip the ATA1 thermocouple to the side of the condenser Once reading is stable press ENTER If the inputted temperature is below the dry bulb range OL will blink If the inputted temperature is above the dry bulb range OL will blink Re take the measurement if OL or OL is displayed For accurate results keep the ATA1 shaded from direct sunlight Once both IDWB and ODDB are locked in the Target Superheat will show in the lower left corner of the display If the Target Superheat calculated from the IDWB and ODDB temperatures is outside the range in which air conditioning is recommended then OL is displayed Usually raising the indoor temperature will bring the conditions within manufacturer s recommendations If your target superheat is out of the recommended range press ENTER to re take both your measurements To re take either IDWB or ODDB press the ARROW button until the label IDWB or ODDB you wish to re take is blinking Press ENTER Re do the measurement and press ENTER to lock it in The newly calculated target superheat will be displayed To clear both IDWB and ODDB simultaneously press ENTER Input temperatures manually 1 Press circular button until Target SH is shown at the bottom center of display Unplug thermoco
11. for the center port 3 Drop enough Isopropyl rubbing alcohol into the uncapped port using an eye dropper or funnel so that it can flush out contaminents 4 Cap central port and gently shake your SMAN upside down to clean sensor 5 Turn right side up Open a port to pour out the rubbing alcohol and open all ports to allow sensors to dry out usually an hour or 50 Obtaining Service Call Fieldpiece Instruments for current costs on our fixed price warranty service Send check or money order for the amount quoted Send your digital manifold 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 Fieldpiece Designed in USA MADE IN TAIWAN www fieldpiece com Fieldpiece Instruments Inc 2010 v21
12. nearity to match the P T chart Safety Information A WARNINGS DO NOT APPLY MORE THAN 800 PSI TO ANY PORT ON THE MANIFOLD FOLLOW ALL EQUIPMENT MANUFACTURER S TESTING PROCEDURES ABOVE THOSE IN THIS MANUAL IN REGARDS TO PROPERLY SERVICING THEIR EQUIPMENT Microns for Vacuum SMAN3 only Connector Type Standard 1 4 NPT male flare fitting Range 50 to 9999 microns of mercury 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 Accuracy 10 or 10 microns whichever is greater 50 to 1000 microns Maximum Overload pressure 500 psig Units Microns of mercury Temperature Sensor type K Type thermocouple Range 76 F to 999 9 F 60 C to 537 0 C Resolution 0 1 F C Accuracy 1 0 F 76 F to 199 9 F 0 5 C 60 C to 93 C 2 0 F 200 F to 999 9 F 1 0 C 93 C to 537 0 C Note All accuracies are after a field calibration Refrigerants The P T charts of the following refrigerants come pre programmed into your SMAN In your SMAN the refrigerants are listed in order of most commonly used Here they are listed in numerical order for easy reference R11 R113 R114 R12 R123 R124 R125 R13 R134A R22 R23 R401A MP39 R401B R402A R402B R404A R406A R407A R407C R408A R409A R410A R414B Hotshot R416A R417A R420A R421A R421B R422A R422B NU22B R422C Oneshot R422D R424A R434A
13. of ice water by stirring Pure distilled water will be the most accurate 2 Press the circular button until your SMAN enters Direct Temperature 11 T2 mode 3 Immerse the temp probe in ice water from T1 and adjust the T1 Cal pot with a flathead screwdriver and let it stabilize keep Stirring 4 Repeat Step 3 for temp probe in T2 Pressure Zeroing To calibrate your SMAN pressure sensors to atmospheric pressure ensure that your SMAN is disconnected from any pressure source and at equilibrium with the ambient pressure 1 SMAN must be in Superheat Subcooling Saturation or T1 T2 Direct mode 2 Press the CAL Atmospheric Pressure button and your SMAN will set the zero point of pressure to the ambient pressure as it leaves the condenser The degrees that the refrigerant cools down below the boiling point is the subcooling Under worst case scenario low load for TXV the subcooling will continue to rise If the subcooling rises too high liquid may be backed into the compressor causing damage and catastrophic failure See www fieldpiece com for more technical articles Evaporator Low Side Direction of Refrigerant Flow Compressor High Side e Condenser e Location of Subcooling Test Location of Superheat Test Advanced Pressure Calibration Your SMAN has the ability to perform a linear adjustment of the pressure sensors based on refrigerant type temperature and pressure Note If the P1 and P2
14. uples from T1 and or T2 Press ENTER Far left digit of IDWB or ODDB will begin blinking indicating manual input mode is ready Use the ARROW button to change values and press ENTER to lock in each digit Once the last digit for ODDB or IDWB is locked in the calculated target superheat will show in the lower left corner of the display Note When pressing ENTER to lock in the last digit for IDWB or ODDB if the inputted temperature is below the wet bulb or dry bulb range OL will flash once If the inputted temperature is above the wet bulb or dry bulb range OL will flash once In both instances you must re input the measurement See steps 6 8 above a N co N w a TE ign TE Cuf s Gee s ee 9 ee cmHg Psig Pressure pounds in Kpa Pressure Kilopascals inHg Negative Pressure inches of mercury cmHg NegativePressure cm of mercury EI Cl i LSAT B L i sta ODDB HH MM SS sc Subcooling T2 T2 Direct tsatT Liquid Saturation Temperature ooog Outdoor Dry Bulb GJ Vacuum Stopwatch HH MM SS Hours Minutes or Minutes Seconds RII 196 if C a mi Battery Life APO Auto Power Off Enabled R Selected Refrigerant of System Pulling a Vacuum model SMAN3 Follow all manufacturers evacuation procedures over those in this manual Note larger systems may take much longer to reach a deep vacuum and a different evacuation method or equipment might be preferred 1 Connect your SMAN3 in between your vacuum
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