Robinair Cool-Tech Fully Automatic R134a Service Machine

Cool-Tech Recover Recycle Evacuate Leak Test & Recharge

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The Cool-Tech 34788 combines simple operation with superior accuracy. It recovers, recycles, evacuates, leak tests, and recharges R-134a quickly and accurately. Fully automatic function lets you recover, vacuum, leak test, charge, and then walk away.

Features and Functions:

Vacuum Leak Test
Automatic Refrigerant Refill
Automatic Air Purge
Automatic Oil Drain
Refrigerant Charging
Refrigerant Management
Vacuum Function

Robinair Is Ahead of the Game!

Recovers 20% More Refrigerant!
Charge Accuracy +/- ½ Ounce
Control panel offers flat storage feature when not in use
Two large tool storage areas
Change between traditional & hybrid vehicle systems without fear of cross
contamination with improved oil injection
New 2X larger display makes the 34788 easier than ever to use
Built-in storage for extra filter
On-board storage for compressor oils

Fully automatic function lets you recover, vacuum, leak
test, charge, and then walk away.

Combines simple operation with superior accuracy. The Cool-Tech 34788 recovers, recycles, evacuates, leak tests, and recharges R-134a quickly and accurately. Automatic operation means less attention is needed!

Automatic Function — With this new option, you can program the unit to
recover, vacuum, leak test, charge, and then walk away without having to operate panel valves.
Vacuum Leak Test — Will monitor the vacuum level after an evacuation, and
inform the technician of a possible leak in the vehicle’s A/C system.
Automatic Refrigerant Refill — With this latest advance, you never have to
stop in the middle of a job to change refrigerant tanks. The unit maintains a user
selectable amount of refrigerant in an internal vessel, and signals when it’s time
to change the supply tank, so no monitoring is required.
Automatic Air Purge — Eliminates damaging air without any monitoring of
gauges or opening of valves.
Automatic Oil Drain — The unit automatically drains system oil captured during
recovery, and the display reminds you to empty the bottle. Graduations on the
container clearly show you how much oil needs to be replaced.
Refrigerant Charging — Has never been this easy. Select a charge mode from
either the high side, low side, or both. Accuracy features eliminate guesswork!
Refrigerant Management Systems—New and improved, system displays
refrigerant use and monitors remaining fi lter life. Prompts appear when 1/3 of
filter life remains.
Vacuum Function — Defaults to 15 minutes, but is programmable up to 99
minutes. Remaining vacuum time is displayed on the screen.

Specifications:
Voltage	115V 60Hz
Refrigerant Container	On-board 30 lb. (14 kg)
Operating Range	50 Deg to 120 Deg F (11 Deg to 49 Deg C)
Recycling Filter-DrierPump	43 cu. In. spin-on type No. ROB-34724
Free Air Displacement	6 cfm (142 L/min) 50" H x 34" W x 23" D (127 cm x 86 cm x 58.4 cm)
Shipping Weight	235 lbs. (106 kg)

In June 2005, the Society of Automotive Engineers (SAE) started a research program to reduce the emissions of R-134a. The program, called I-MAC (Improved Mobile Air Conditioning), was tasked with cost effectively improving R-134a systems while reducing refrigerant emissions. The I-MAC members have pledged to design smaller systems with fewer leak points and improve service equipment. As a result of this program, the SAE recently approved tighter standards for automotive A/C recovery, recycle and recharge equipment. The new standard, SAE J-2788 requires that all service equipment manufactured after November 1, 2007, must recover 95% of the refrigerant and recharge
to within 1/2 ounce.

How will this affect ME?

Up until a couple of years ago, R-134a was cheap and plentiful. Today it’s a different storyrefrigerant is much more expensive and not always available. The Robinair 34788 recovers up to 20% more refrigerant, which means it will cost less to recharge the system. The best charge accuracy that could be claimed by older generation service machines is +/- 1 ounce, a 3% error on a two-pound system. That same charge accuracy on a 14-ounce system is over twice the error (7%).

Early R-134a systems could still provide some cabin cooling when they were 4-6 ounces (12- 18%) low on refrigerant. However, new designs are so efficient, they do not have reserve refrigerant, and charge accuracy will be critical. In the shop, the Robinair 34788 will recharge the vehicle to within 1/2 ounce of the charge capacity, and you will avoid the dreaded “call back”. As the shop owner, you will realize more profits per service by recovering more refrigerant and charging less. The savings will be obvious.