1. Introduction
The Fieldpiece SM480V SMAN Digital Manifold is an advanced tool designed for HVAC and refrigeration professionals. It accurately measures low and high pressures, superheat, and subcooling, and includes a micron gauge for precise vacuum measurements. This manual provides essential information for the proper setup, operation, maintenance, and troubleshooting of your SM480V unit.
2. Key Features
- Advanced Digital Manifold & Micron Gauge: For comprehensive HVAC & Refrigeration diagnostics and service.
- Accurate Measurements: Precisely measures low and high pressure, superheat, and subcooling.
- Protected Thermocouple Jacks: Dedicated jacks for pipe and outdoor temperature sensors.
- Four-Valve Manifold: Includes an integrated vacuum gauge for efficient system evacuation.
- Job Link Psychrometer Probe Connectivity: Allows connection of Job Link Psychrometer probes to the SMAN for enhanced diagnostics.
- Data Logging: Equipped with internal data logging capabilities for up to 7 continuous days or 9 jobs.
- Temperature Compensated System Tightness Test: Provides reliable leak detection.

3. What's in the Box
Your Fieldpiece SM480V package includes the following items:
- SM480V SMAN 4-port Refrigerant Manifold
- (2) TC24 Wired Type-K Pipe Clamp Thermocouples
- (1) ATA1 Type-K Bead Thermocouple with Clip
- (1) ANC11 Padded Drawstring Case
- Batteries (6 AA batteries required, included)

4. Setup
4.1. Battery Installation
- Locate the battery compartment on the back of the manifold.
- Open the compartment cover.
- Insert 6 AA alkaline batteries, ensuring correct polarity.
- Close the battery compartment cover securely.
4.2. Connecting Thermocouples
- Connect the TC24 Wired Type-K Pipe Clamp Thermocouples to the protected thermocouple jacks on the manifold.
- Connect the ATA1 Type-K Bead Thermocouple to its designated jack if needed for ambient or specific component temperature readings.
4.3. Hose Connections
The SM480V features a four-valve manifold. Connect your refrigerant hoses to the appropriate ports:
- Low Side: Typically blue hose.
- High Side: Typically red hose.
- Vacuum Port (VAC): For connecting to a vacuum pump.
- Refrigerant Port (REF): For connecting to a refrigerant tank.

5. Operating Instructions
5.1. Power On/Off
Press and hold the power button to turn the unit on or off. A short press will toggle the backlight.
5.2. Selecting Refrigerant
Use the 'MENU' button to navigate to the refrigerant selection. Use the arrow buttons to scroll through the available refrigerants (e.g., R22, R410A, R134a, R404A, R407C, R448A, R449A, R452A, R32, R454B, R454C, R407A, R407F, R422B, R422C, R422D, R507A, R513A, R1234yf, R1234ze, R600a, R290, R744). Press 'ENTER' to confirm your selection. The SM480V supports downloading new refrigerants via the Job Link app.
5.3. Taking Measurements
Once connected to the system and refrigerant is selected, the manifold will display real-time pressure and temperature readings. Superheat and subcooling values will be calculated automatically based on the connected thermocouples.

5.4. Data Logging
The SM480V can log data internally. To initiate data logging:
- Navigate to the data logging menu.
- Set the desired logging duration and interval.
- Start the logging process. The manifold will store measurements, which can be downloaded later via the Micro USB port.
5.5. System Tightness Test
Utilize the temperature compensated system tightness test feature to accurately detect leaks in the system. Follow the on-screen prompts to perform the test.
5.6. Wireless Connectivity (Job Link App)
Connect your SM480V to the Fieldpiece Job Link app on your smartphone or tablet for remote monitoring, advanced diagnostics, and report generation. This allows you to view readings from a distance and manage job data efficiently.
6. Maintenance
6.1. Cleaning
Wipe the manifold with a damp cloth. Do not use abrasive cleaners or solvents. Ensure the unit is dry before storage.
6.2. Battery Replacement
Replace batteries when the low battery indicator appears on the display to ensure continuous operation and accurate readings.
6.3. Sensor Calibration
Regularly check and calibrate sensors as per manufacturer recommendations to maintain accuracy. Refer to the Job Link app or Fieldpiece website for detailed calibration procedures.
6.4. Firmware Updates
Periodically check for firmware updates via the Fieldpiece website or Job Link app. Updates can provide new features, refrigerant profiles, and performance improvements. Use the Micro USB port to update firmware.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display/Unit won't turn on | Dead batteries; Incorrect battery installation | Replace batteries; Check battery polarity |
| Inaccurate pressure/temperature readings | Sensors not properly connected; Sensors need calibration; Incorrect refrigerant selected | Ensure secure connections; Calibrate sensors; Verify correct refrigerant selection |
| Wireless connectivity issues | Out of range; Bluetooth interference; App not updated | Move closer to the manifold; Minimize interference; Update Job Link app |
| Vacuum readings unstable | System leak; Moisture in system; Contaminated manifold/hoses | Perform tightness test; Ensure thorough evacuation; Clean manifold and hoses |
8. Specifications
- Display: LCD (5 inches diagonal)
- Maximum Manifold Pressure: 800 Psig (5500 kPa)
- Battery Type: 6 x AA alkaline
- Battery Life: 350 hours typical (without vacuum, backlight, and wireless)
- Radio Frequency: 2.4 GHz
- Wireless Range: 1000 feet (305 meters) line of sight (distance decreases through obstructions)
- Data Port: Micro USB (for extracting data logs or updating firmware)
- Operating Environment: 32°F to 122°F (0°C to 50°C) at <75% RH
- Water Resistant: Designed to IP54
- Material: ABS Plastic
- Item Weight: 6.2 Pounds
- Product Dimensions: 63 x 10.5 x 12.5 inches


9. Warranty and Support
For warranty information, product registration, and technical support, please visit the official Fieldpiece website or contact their customer service. Keep your purchase receipt as proof of purchase for warranty claims.
Note: Warranty terms may vary based on region and retailer. It is recommended to purchase from authorized dealers to ensure full warranty coverage.





