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Yellow Jacket

YELLOW JACKET® Refrigerant Management System (RMS) 3784X

YELLOW JACKET® Refrigerant Management System (RMS) 3784X

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YELLOW JACKET® Refrigerant Management System (RMS) 3784X 

Designed to meet today’s tough service standards, the YELLOW JACKET® Refrigerant Management System (RMS) 3784X for R-134a and 3786X for R-1234yf provide full cycle recovery/recycle/evacuate/recharge to bring the vehicle back to factory specifications. The easy-to-use, portable, full color interface walks you quickly through each step for easy operation and fast service.

Not ready for R-1234yf? Purchase the 3784X for R-134a today and we can update it to R-1234yf later with our optional (one time use) conversion kit.

To obtain pressure readings in a snap, each RMS unit comes with a YELLOW JACKET® ManTooth® Wireless Digital Pressure/Temperature Gauge so you can test the A/C system without losing refrigerant. The free downloadable app wirelessly calculates and displays the A/C system’s actual pressures in an easy-to-read color format on the RMS tablet, as well as iOS or Android™ devices.

Real-time remote support, including set-up/start-up assistance. With the system’s Window’s-based control tablet, we can remotely access your machine and provide training to show you how to use the machine and navigate the screens. All you need is a wireless connection. In addition, we can perform remote diagnostics, including using the tablet to take live video or photographs during the session if you need to show us something specific.


  • Certified to SAE J3030 (37840 includes SAE J2788)
  • “Charge only” capability for R-134a (not permitted for R-1234yf per standards)
  • High- or Low-side charging
  • Fully automatic air purging constantly monitors and purges non-condensibles
  • Fast tank refills with no hose changes
  • 95% efficiency rating
  • Maintenance reminders for oil/filter changes
  • Automatic shut-off for full tank and high pressure situations
  • Heavy-duty shock resistant scale for accurate charging
  • Two-stage, 5 cfm vacuum pump for fast, high efficiency evacuation (7 cfm on 37844)
  • 1/2 hp oil-filled hermetic compressor for speed and reliability
  • Fully factory tested – 34-point quality check
  • Choose from high- or low-side charging for vehicles with only one service fitting
  • For preventative maintenance, the machine alerts the technician to change vacuum pump oil and filters when due
  • SAE J2843™ for R-1234yf requires 98%+ purity for vehicle refrigerant in order to service the vehicle with any RR&R equipment. Contaminated refrigerant is to be recovered with an approved contaminated recovery device before service can be performed Contaminated Refrigerant Recovery System
  • Meets standard requirements for vacuum pull control and system leak test
  • Charge accuracy within 1/2 oz. (14 grams)
  • Automatic oil drain
  • Tablet can print to existing shop printer (requires local area wireless network or USB cable – not included)
  • Digital on-screen pressure readings
  • Built-in self diagnostics
  • Touch screen keypad/interface
  • Optional sealant traps
  • Optional manual oil injector
  • 120V operating system
  • Run time hours tabulated for components
  • Easy tank access for quick removal and changeout
  • 50 pound storage tank (3784x) and 30 pound storage tank (3786x)
  • 10 foot hose (15′ on 37844)
  • One year parts and labor warranty (see warranty statement for exclusions) – tablet follows manufacturer’s warranty
  • Lifetime technical support
  • Patent Pending


  • Wireless, portable tablet for remote monitoring (can also be used for other business purposes)
  • Logging and storage of jobs for future reference and refrigerant usage
  • Easy to store, built-in hose rack
  • 10-foot premium YELLOW JACKET® PLUS II™ hoses for easy connection to even hard-to-reach fittings – 25% longer than the standard (15′ on 37844)
  • 5 cfm vacuum pump capable of extended pull time periods (7 cfm on 37844)
  • Steel frame for high durability
  • Large oil extraction reservoir
  • Hang hooks for rags, tools, etc.
  • Large magnetic hooks to hold job jacket
  • Four magnetic surfaces and magnets to mount notes/hold items
  • Optional side bag with eight (8) pockets holds full sized notepad, two beverages, cell phone and more
  • Large handles for easy movement
  • Trays for pens, small parts, tools and other misc. items
  • Flat area/ workspace
  • 10-foot power cord
  • W x D x H: 19.5 x 29 x 45”
  • Weight w/o refrigerant: Approximately 220 lbs.

UPC # Description:

  • 37840 Automatic RMS for R-134a with 10′ hose, 5 cfm vacuum pump and Android tablet
  • 37841 Automatic RMS for R-134a with 10′ hose, 5 cfm vacuum pump, Android tablet and internal identifier
  • 37844 Automatic RMS for R-134a with 15′ hose, 7 cfm vacuum pump and Android tablet (no identifier)
  • 37846 Automatic RMS for R-134a with 10′ hose and 5 cfm vacuum pump (no tablet or identifier)
  • 37866 Automatic RMS for R-1234yf with 5 cfm vacuum pump, 30 lb. tank, internal identifier and Android tablet
  • 37867 Automatic RMS for R-1234yf with 5 cfm vacuum pump, 30 lb. tank and internal identifier (no tablet)

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