Robinair R-134a and R-1234yf A/C Machine Comparison and Accessories

Robinair R-134a A/C Machines

Standard features on Robinair R-134a machines include:

1.5 CFM dual-stage vacuum pump (single-stage on 34288NI)
30-lb DOT internal tanks (22-lb DOT on 34288NI)
9' SAE J2886 hoses (9' SAE J2196 on 34288NI)
150-lb (68 kg) spin-on filter, P/N 34724
Integrated cord wrap
Minimum 98.5% refrigerant recovery
Charging accuracy within +/- 0.5 oz

R-134a Machine Feature Comparison

Features	34288NI	34788NI	34788NI-H	34988NI	34998
Fully-Automatic Function	Semi-automatic, manual valves	Yes	Yes	Yes	Yes
Automatic Dye Inject	-	-	-	1/4-oz during recharge, user-selectable	1/4-oz during recharge, user-selectable
Automatic Oil Drain	Shows amount of oil to replace	Shows amount of oil to replace	Shows amount of oil to replace	Shows amount of oil to replace	Shows amount of oil to replace
Automatic Oil Inject	18480 or 18490 syringe required	Yes*	18480 or 18490 syringe required	Yes*	Yes*
Refrigerant & Oil System Capacity Database	Optional, 34412-E	Optional, 34412-E	Optional, 34412-E	Optional, 34412-E	Optional, 34001
A/C System Refrigerant Flush	-	Yes	Yes	Yes	Yes
Save, print, store service data	No save, optional printer 30038	Yes, optional printer 30038	Yes, optional printer 30038	Printer included	Mopria Print Service wireless printing
Visual & Audible Alarm / Notifications	-	Yes	Yes	Yes	Yes
Vacuum Leak Test and Monitoring	-	Yes	Yes	Yes	Yes
Automatic Air Purge	Yes	Yes	Yes	Yes	Yes
Automatic Refrigerant Refill	-	Yes	Yes	Yes	Yes
Vacuum Feature	Yes (15 mins default, programmable)	Yes	Yes	Yes	Yes
WiFi / Bluetooth capable	Yes, requires master kit	Yes, requires master kit	Yes, requires master kit	Yes, requires master kit	WiFi, Bluetooth enabled
Display	4.3" QVGA Color LCD	4.3" QVGA Color LCD	4.3" QVGA Color LCD	7" graphical LCD	10.5" hi-res touch screen
Refrigerant Charging	Low side only	High, low or both sides	High, low or both sides	High, low or both sides	High, low or both sides
Refrigerant Management System	Yes	Yes	Yes	Yes	Yes
Electric Vehicle (EV) Capable	-	-	Yes	-	-

*34788NI uses one oil bottle; 34988NI and 34998 include two oil bottles and one UV dye bottle.

R-134a Machine Specifications

Specifications	34288NI	34788NI	34788NI-H	34988NI	34998
Operating voltage	115V, 60 Hz	125 VAC, 60 Hz	125 VAC, 60 Hz	125 VAC, 60 Hz	125 VAC, 60 Hz
Pressure gauges	80 mm	100 mm, EN-837-1	100 mm, EN-837-1	100 mm, EN-837-1	Digital display
Keyboard	Alpha-numeric with service function keys	Alpha-numeric with service function keys	Alpha-numeric with service function keys	Alpha-numeric with service function keys	Touchscreen virtual keyboard
Compressor	1/3 hp hermetic	3/8 hp, pressure-protected, oiled, hermetically sealed	3/8 hp, pressure-protected, oiled, hermetically sealed	3/8 hp, pressure-protected, oiled, hermetically sealed	3/8 hp, pressure-protected, oiled, hermetically sealed
SAE compliance for R-134a	Yes, J2788 certified	Yes, J2788 certified	Yes, J2788H certified	Yes, J2788 certified	Yes, J2788 certified

Robinair R-1234yf Recovery Machines

Standard features on all Robinair R-1234yf machines include:

1.5 CFM dual-stage vacuum pump
22-lb DOT internal tanks (30-lb DOT on AC1234-9)
9' SAE J2886 hoses (8' SAE J2888 on AC1234-6)
330-lb (150kg) spin-on filter, P/N 34724
Integrated cord wrap
Minimum 98.5% refrigerant recovery
Charging accuracy within +/- 0.5 oz

R-1234yf Machine Feature Comparison

Features	AC1234-6	AC1234-4	AC1234-9
WiFi capable	No	Yes, requires master kit	Yes, enabled from factory
Bluetooth capable	No	Yes, requires master kit	Yes, enabled from factory
Operating system	Windows CE	Robinair proprietary OS	Android 8.1 Oreo
Free WiFi software updates	N/A	Yes, requires master kit	Yes, enabled from factory
Fully-Automatic Function	Yes	Yes	Yes
Integrated refrigerant identifier (meets SAE J2927)	Yes	Yes	Yes
Automatic Refrigerant Refill	Yes	Yes	Yes
A/C System Refrigerant Flush	Yes	Yes	Yes
Vacuum Feature	Yes (15 mins default, programmable)	Yes	Yes
Automatic Oil Drain	Shows amount of oil to replace	Shows amount of oil to replace	Shows amount of oil to replace
Automatic air purge	Yes	Yes	Yes
Vacuum Leak Test and Monitoring	Yes	Yes	Yes
Display	5.7" QVGA color LCD	4.3" QVGA Color LCD	10.5" hi-res touch screen
Refrigerant charging	High, low or both sides	High, low or both sides	High, low or both sides
Refrigerant & Oil System Capacity Database	Optional, 34414-B	Optional, 34413-D	Optional, 34002
Save, print, store service data	Printer included	Optional printer 30038	Mopria Print Service wireless printing and PDF export
Refrigerant Management System	Yes	Yes	Yes
Electric Vehicle (EV) Capable	Yes	Yes	Yes
Visual & Audible Alarm / Notifications	Yes	Yes	Yes

R-1234yf Machine Specifications

Specifications	AC1234-6	AC1234-4	AC1234-9
Operating voltage	103 - 127V, 60 Hz AC	115 VAC, 60 Hz	125 VAC, 60 Hz
Pressure gauges	100mm, EN-837-1	100mm, EN-837-1	Digital display
Keyboard	Alpha-numeric with service function keys	Alpha-numeric with service function keys	Touchscreen virtual keyboard
Compressor	1/3 hp hermetically sealed	1/3 hp hermetically sealed	3/8 hp, pressure-protected, oiled, hermetically sealed
SAE compliance for R-1234yf	Yes, J2843, J2927 certified	Yes, J2843, J2927 certified	Yes, J2843, J2927 certified

Maximize Your Robinair Investment: Accessories and Maintenance

Enhance your Robinair A/C machine's capabilities and ensure its longevity with a range of accessories and maintenance items.

Vehicle Refrigerant Capacity Databases

Confirm A/C system charge capacities directly from your Robinair machine.
Includes charge amounts and component oil capacities for vehicle model years 1997–2020 (R-134a) or 2013–2020 (R-1234yf).

Thermal Printer and Paper

Model 30038 printer for 34288NI, 34788NI, and 34788NI-H machines.
Model 34214 3-pack printer paper.

Wireless Accessories

Bluetooth Temperature Probes

Read and track temperatures from multiple locations.
80211TMP master kit: Enables WiFi and Bluetooth on NI and AC1234-4 machines; includes 2 probes.
Use up to 2 probes per compatible Robinair machine.
80212 (2-pack) / 80213 (single probe): Work directly with 34998 and AC1234-9 machines.

VCI (Vehicle Communication Interface)

80211VCI master kit + database: Enables WiFi/Bluetooth on NI and AC1234-4 machines. Wirelessly gather vehicle info (year, make, model) and transmit to your machine. Includes current-year refrigerant capacity database. Reads generic OBDII codes for A/C system troubleshooting.
ACS-250 Robinair VCI: Wirelessly gather vehicle info and transmit to compatible machines. Works with 34998 and AC1234-9; requires WiFi/Bluetooth enablement for NI and AC1234-4. Requires refrigerant capacity database purchase. Reads generic OBDII codes.

*Use of ACS-250, 80212, or 80213 on NI and AC1234-4 machines requires prior WiFi/Bluetooth enablement using the 80211TMP or 80211VCI master kit.

Machine Maintenance

Spin-on Recycling Filter-Drier

34724: Specially blended for maximum acid and moisture removal. Filters up to 330 lbs (150 kg) of R-1234yf or 150 lbs (75 kg) of R-134a. Check Robinair.com for machine compatibility.

Maintenance Kit

13172: Includes filter-drier (34724) and 16-oz bottle of Premium High Vacuum Pump Oil. Filters up to 330 lbs (150 kg) of R-1234yf or 150 lbs (75 kg) of R-134a.

Protective Cover

17499: Heavy-duty vinyl cover to protect from dirt, dust, and shop spills.

Accessories and Maintenance Compatibility Chart

AC Machine	Wireless Accessories						Maintenance
AC Machine	AC Capacities DB	Printer	VCI	Temp Probes	VCI (Alt)	Temp Probes (Alt)	Filter	Maintenance kit (Filter + oil)	Cover	Oil injectors	High side coupler	Low side coupler
34288NI, 34788NI, 34788NI-H	34412-F	30038	80211VCI	80211TMP	ACS-250*	80213 or 80212*	34724	13172	17499	18480 or 18490 for hybrid service	18191A	18190A
34988NI, 34998	34412-F / 34001	Included / -	80211VCI	80211TMP	ACS-250*	80213 or 80212*	34724	13172	17499	N/A	18191A	18190A
AC1234-4, AC1234-6	34414-B / 34413-D	30038 / Included	80211VCI	80211TMP	ACS-250*	80213 or 80212*	34724	13172	17499	18460, 18465, 18470	18123	18122
AC1234-9	34002	-	-	-	ACS-250*	80213 or 80212*	34724	13172	17499	18460, 18465, 18470	18123	18122

*Note: Use of ACS-250, 80212, or 80213 on NI and AC1234-4 machines requires the machine to be WiFi/Bluetooth enabled using the 80211TMP or 80211VCI master kit.

	Robinair Machine Pre-Season Maintenance Checklist A comprehensive checklist for performing pre-season maintenance and checks on Robinair HVAC service equipment, covering machine inspection, filter life, vacuum pump oil, scale calibration, leak checks, software updates, and refrigerant identifier maintenance. Includes model numbers and part numbers.
	ACTECH 2022: Automotive A/C Service Equipment & Refrigerants Catalog Discover the latest automotive A/C service equipment, refrigerants, and tools from top brands like Robinair, Opteon, FJC, CPS Products, and Mastercool. This catalog features solutions for R1234yf and R134a systems, essential for modern vehicle maintenance.
	Robinair 34998 R-134a A/C System Recover, Recycle, Recharge Machine Instruction Manual This manual provides detailed instructions for operating, maintaining, and troubleshooting the Robinair Model 34998 machine, designed for recovering, recycling, and recharging R-134a automotive air conditioning systems. It includes safety precautions, setup procedures, operating guidelines, maintenance schedules, and a troubleshooting guide.
	Robinair AC1234-9: R1234yf A/C Service Machine Instruction Manual This instruction manual provides detailed operational guidance for the Robinair AC1234-9, a professional machine designed for the recovery, recycling, and recharging of R1234yf refrigerant in automotive air conditioning systems, meeting SAE J2843 standards.
	Robinair 34788NI/34788NI-H: R134a A/C Recover, Recycle, Recharge Machine User Manual Comprehensive user manual for the Robinair 34788NI and 34788NI-H R134a A/C recover, recycle, and recharge machine. Includes setup, operation, maintenance, and safety instructions.
	Robinair AC1X34-3i / AC1234-3i A/C Service Unit Quick Start and Setup Guide This guide provides initial setup instructions for the Robinair AC1X34-3i and AC1234-3i A/C service units, covering unpacking, connections, power-up, language and unit selection, date/time settings, print header configuration, automatic internal clearing, oil injection programming, tank filling, and WiFi configuration.
	Robinair Cool-Tech 34288, 34788, 34988: SAE J2788 Compliant Automotive A/C Recovery Machines Explore the Robinair Cool-Tech series of automotive A/C recovery, recycle, and recharge machines (models 34288, 34788, 34988). This document details how these machines meet the SAE J2788 standard, offering enhanced refrigerant recovery and precise charge accuracy for modern vehicle air conditioning systems, alongside features and return on investment benefits.
	Robinair 17800C Multi-Refrigerant A/C Service Machine - Datasheet Detailed technical specifications and features for the Robinair 17800C, a versatile A/C and refrigeration service machine designed for mass transit and industrial applications, capable of handling multiple refrigerants.

Robinair: The Right Machine for A/C Service