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Activate Vacuum Alarms When Pulling a Vacuum

1   Press ALARM to activate low alarm. Default is 500 microns. 

Stopwatch will start. When low alarm value is reached, SMAN460 

will beep and the stopwatch will restart from zero. You can 

monitor how long the vacuum has been under your target value.

2   Press ALARM again to deactivate low alarm and activate high 

alarm. Default is 1000 microns. When high alarm value is 

reached, SMAN460 will beep and the stopwatch will pause. You 

can see how long it took to reach your target value.

3   Press ALARM again to deactivate high alarm.

Additional Evacuation Tips to Reach a Deeper Vacuum:

1  Use shortest vacuum rated hoses with largest diameter available.

2  Remove schrader cores and core depressors. Core removal tools 

like the "MegaFlow Valve Core Removal Tool" can be purchased 

from Appion, Inc. to help with this process.

3  Inspect the rubber seals at both ends of your hoses for damage 

that may result in leakage.

4  Do not use hoses with low loss fittings when evacuating or 

pulling a vacuum on a system.

5  When the vacuum pump is isolated from the system, a slow rise 

in micron levels may signify moisture is still present in the system 

but should eventually stablize. A continuous rise in microns levels  

to atmosphere may indicate a leak in the hoses, the vacuum 

pump connections or the system.

Changing Units

Your SMAN can display pressure and temperature measurements 

in English, Metric or combination of both units.

1  Press UNITS to enter unit selection screen.

2  Use ARROW to select your desired pressure units. Press ENTER.

3  Use ARROW to select your desired temperature units. Press ENTER 

to return to pressure units.

4  Press UNITS to return to normal SMAN display.

Wireless System Analyzers

Your SMAN460 can connect with the Fieldpiece HVAC Guide® HG3 

for deeper diagnosis, data storage and reporting. Send all your line 

pressures and temperatures, vapor and liquid saturation temperatures, 

superheat and subcooling calculations and micron readings wirelessly 

to the Fieldpiece HVAC Guide® HG3.

1  Connect all hoses and pipe clamp thermocouples to the SMAN460 

and the HVACR unit to be tested.

2  From main display, hold SYNC for 1 second until a beep is heard. 

SMAN460 will begin searching for a Fieldpiece Wireless System 

Analyzer.

3  Set your Fieldpiece HVAC Guide® HG3 to connect with the 

SMAN460. Refer to your Fieldpiece HVAC Guide® HG3 manual for 

more information on how to connect wirelessly.

Wireless Notes  

1  The SMAN460 and Fieldpiece HVAC Guide® HG3 must be between 

1 to 10 feet for initial sync to occur.

2  Be sure the Fieldpiece HVAC Guide® HG3 has been updated to the 

latest firmware version located on our website.

 

Firmware Updates

Your SMAN460 firmware can be updated in the field to ensure you 

always have the most up-to-date features for your manifold. Just go 

to www.fieldpiece.com to periodically check for the latest firmware 

version. If a newer version is available, follow the download link and 

installation instructions on the website. Connect your SMAN460 to the 

PC via a mini-USB to USB cable (not included) to install the update on 

your SMAN.

To check your current firmware version, power off your SMAN460. 

Press and hold the blue power button for about 6 seconds. The SMAN460 

firmware version will show in the top right corner of the display (X.XX).

Specifications

Mini-USB port:

  For updating to newer versions of firmware

Display size: 

5 inches (diagonal)

Backlight: 

Blue (On for 3 minute unless turned off manually)

Battery:  

6 x AA (Battery life below based on alkaline type)

Battery life:

  350 hours (without vacuum, backlight and wireless)

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

Operating environment:

 32°F to 122°F (0°C to 50°C) at <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

Storage temperature:

 -4°F to 140°F (-20°C to 60°C), 0 to 80% RH 

(with battery removed)

Weight: 

4.03 lbs (1.83 kg)

Pressure

Sensor type:  

Absolute pressure sensors

Connector type: 

 Standard 1/4" and 3/8" NPT male flare fitting

Range:

  29” HgV to 580psig (English), 74 cmHgV to 0 to 4000KPa 

(Metric), 4.000MPa (Metric), and 40.00bar (Metric)

Resolution:

 0.1 psi/inHg; 1 kPa/cmHg; 0.001MPa; 0.01bar

Accuracy:

  29” HgV to 0” HgV: ±0.2” HgV

74 cmHgV to 0 cmHgV: ±1 cmHgV

0 to 200 Psig: ±1 Psi; 0 to 1378 KPa: ±7 KPa; 0 to 1.378MPa: 

±0.007MPa; 0 to 13.78 bar ±0.07 bar

200 to 580 Psig: ±(0.3% of 1 Psig); 1378 to 4000KPa: ±(0.3% of 

7 Kpa); 1.378 to 4.000MPa: ±(0.3% of 0.007MPa); 

13.78 to 40.00bar: ±(0.3% of r0.07bar)

Maximum overload pressure:

 800 psig

Units:

 Psig, kPa, MPa, bar, inHg, and cmHg

Microns for Vacuum

Connector type: 

 Standard 1/4" and 3/8" NPT male flare fitting

Range:

  0 to 9999 microns of mercury

Resolution:

 1 micron (0 to 2000 microns), 250 microns (2001 to 

5000 microns), 500 microns (5001 to 8000 microns), 1000 microns 

(8001 to 9999 microns)

Accuracy:

  ±(5% of r 5 microns), 50 to 1000 microns

Maximum overload pressure:

 580 psig

Units:

 Microns of mercury

Temperature

Sensor type: 

 Type K thermocouple

Range: 

-95°F to 999.9°F (-70°C to 537.0°C)

Resolution:

 0.1°F/°C

Accuracy: 

±(1.0°F) -95°F to 199.9°F; ±(0.5°C) -70°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.

Wireless

Wireless range:  

1 to 100 feet (30m)

Initial sync setup range:  

1 to 10 feet

Wirelessly transmit to Fieldpiece HVAC Guide® HG3 System Analyzer

Wirelessly receive indoor wet bulb (IDWB) and outdoor dry bulb 

(ODDB) from Fieldpiece transmitters

 Auto Power Off (APO)

To conserve battery life, your SMAN will power down after 30 

minutes of inactivity. APO is activated by default and APO displays 

above the battery icon. To deactivate, press and hold ENTER while 

powering on the SMAN. When deactivated, APO will no longer show 
above the battery icon.

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.  SMAN will 

display "lo batt" and power off. Remove rear 

battery cover and replace with 6 AA batteries.

Cleaning the Micron Sensor

Over time, the vacuum sensor of the SMAN460 

may become contaminated with dirt, oil, and 

other contaminants from pulling vacuums. 

Never

 use an object such as a cotton swab to clean the sensor, 

you may cause damage to the sensor.

2  Open all valves and cap all the ports except for the VAC port. 

3   Drop enough Isopropyl (rubbing) alcohol into the VAC port using 

an eye dropper or funnel so that it can flush out contaminants.

4   Cap VAC port and gently shake your SMAN460 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. Drying usually 

takes about an hour.

Using Different Refrigerants

You can use your manifold with different refrigerants. Be sure to 

purge your manifold and hoses before connecting to a system with a 

different refrigerant.

Calibration

Temperature 

To calibrate your SMAN460 temperature 

thermocouples, adjust the pot on the front 

of the meter labeled SLT Cal or LLT 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 obtained through field calibration.

1   Stabilize a large cup of ice water by stirring. Pure, distilled water 

will be the most accurate.

2    Immerse the temp probe in ice water from SLT and adjust the 

SLT Cal pot with a flat head screwdriver and let it stabilize, keep 

stirring.

3   Repeat Step 2 for temp probe in LLT.

Pressure Zeroing

To calibrate your SMAN460 pressure sensors 

to atmospheric pressure, ensure that your 

SMAN460 is disconnected from any pressure 

source and at equilibrium with the ambient 

pressure. 

1  Press the CAL Atmospheric Pressure button and your SMAN460 

will set the zero point of pressure to the ambient pressure.

Advanced Pressure Calibration

Your SMAN460 has the ability to perform a 

linear adjustment of the pressure sensors based 

on refrigerant type, temperature, and pressure.

Calibration setup:

  For best results, first perform both the 

Temperature and Pressure Zeroing procedures. See Calibration 

section for details. This will ensure pressure readings are zeroed 

and thermocouple is properly calibrated to the SLT port of the 

SMAN. Calibration to LLT port is not necessary for this calibration. 

The refrigerant cylinder should be stored in a stable ambient 

environment for at least 24 hours before calibration.  

1   Plug in a Type K thermocouple into SLT. (A bead type 

thermocouple, like the ATB1, is recommended.)

2  Connect the SMAN460 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: 

Some refrigerant will remain in the hoses which will need to be 

recovered.)

3   Press the REFRIGERANT button to match the refrigerant of the 

cylinder you are using.

4   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. 

5   Open the refrigerant cylinder. The pressure inside cylinder should 

now be displayed on both HIGH and LOW side pressure sensors.

6   Press the CAL Test Pressure button. If successful, "Good" will 

display for 3 seconds. If failed, "Err" will display for same time.

Your SMAN checks with its built-in P-T charts to compare the 

temperature of the refrigerant in the tank to the vapor saturation 

temperature based on the refrigerant you selected. If the measured 

pressures on your SMAN are within ±3psi of the P-T chart pressure 

corresponding to the vapor saturation temperature, the SMAN will 

adjust the pressure sensor linearity to match the P-T chart.

Possible causes of failed "Err" pressure calibration:

1. Refrigerant tank was not stored in stable ambient conditions for at 

least 24 hours.

2. Thermocouple attached to refrigerant tank was not properly 

calibrated to SLT port of SMAN.

3. Thermocouple was plugged into wrong port LLT instead of SLT.

4. Incorrect refrigerant was selected on the SMAN.

Refrigerants

The P-T charts of the following 45 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. 

Periodically we program new refrigerants in SMAN™ Manifold, go to  

www.fieldpiece.com/support/downloads for newly added refrigerants 

for the SMAN™ Manifolds via firmware update.

R11, R113, R114, R12, R123, R1234YF, R124, R125, R13, R134A, R22, 

R23, R32, R401A(MP39), R401B, R402A, R402B, R404A, R406A, R407A, 

R407C, R407F, R408A, R409A, R410A, R414B (Hotshot), R416A, R417A, 

R417C (HOT SHOT 2), R420A, R421A, R421B, R422A, R422B(NU22B), 

R422C(Oneshot), R422D, R424A,  R427A, R434A(RS-45), R438A(MO99), 

R500, R502, R503, R507A, R508B (Suva95)

FCC Compliance and Advisory 

Statement

This device complies with Part 15 of the FCC rules. Operation is 

subject to the following two conditions: (1) this device may not cause 

harmful interference, and (2) this device must accept any interference 

received, including interference that may cause undesired operation.

This equipment has been tested and found to comply with the limits 

for a Class B digital device, according to Part 15 of the FCC rules. These 

limits are designed to provide reasonable protection against harmful 

interference in a residential installation. This equipment generates, uses 

and can radiate radio frequency energy and if not installed and used 

in accordance with the instructions, may cause harmful interference to 

radio communications. However, there is no guarantee that interference 

will not occur in a particular installation. If this equipment does cause 

harmful interference to radio or television reception, which can be 

determined by turning the equipment off and on, the user is encouraged 

to try correct the interference by one or more of the following measures:

1.Reorient the receiving antenna.

2.Increase the separation between the equipment and receiver.

3.Connect the equipment into an outlet on a circuit different from 

that to which the receiver is connected.

4.Consult the dealer or an experienced radio/TV technician for help.

Shielded interface cables must be used in order to comply with 

emission limits.

FCC Caution:

  To assure continued compliance, any changes or 

modifications not expressly approved by the party responsible 

for compliance could void the user's authority to operate this 

equipment.

Limited Warranty

This meter is warranted against defects in material or workmanship 

for one year from date of purchase from an authorized Fieldpiece dealer. 

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.

Obtaining Service

Email Fieldpiece warranty department at fpwarranty@fieldpiece.

com for current fixed price repair service. Send check or money order 

made out to Fieldpiece Instruments for the amount quoted. If your 

meter is under warranty there will be no cost for the repair/replacement. 

Send your meter, 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, warranty for products purchased 

outside of the U.S. should be handled through local distributors. Visit 
our website to find your local distributor.

www.fieldpiece.com

© Fieldpiece Instruments, Inc  2014; v09

!

  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.

Progettato negli Stati Uniti

MADE IN TAIWAN

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