Tech tip: How to use a timer to pull a proper vacuum

May 2, 2013
Having an A/C RRR machine with an adjustable evacuation timer is critical to pulling the proper vacuum in all conditions.

Moisture in a vehicle's A/C system is the cause of most problems and complaints today. A/C repairs expose a vehicle's system to air and moisture, which can be picked up by the refrigerant and transported through the system with ice crystals forming at the point of expansion. If left in the system, this can greatly increase the corrosion of metals and damage a vehicle.

A vacuum pump is vital to remove moisture and air from the vehicle's A/C system. Most A/C RRR machines come equipped with a vacuum pump that can be used to evacuate the A/C system, while Robinair A/C RRR machines come equipped with an adjustable vacuum pump timer. The timer automatically defaults to 10 minutes. However, if service is performed in a high humidity environment, the timer can be set to 30 minutes or more, to ensure all of the moisture is removed. Using a timer allows technicians to service a vehicle's A/C system while also performing other tasks.

Information provided by: Robinair, Service Solutions LLC

Sponsored Recommendations

ZEUS+: The Cutting-Edge Diagnostic Solution for Smart, Fast, and Efficient Auto Repairs

The new ZEUS+ simplifies your diagnostic process and guides you through the right repair, avoiding unnecessary steps along the way. It gives you the software coverage, processing...

Diagnostic Pre- and Post-scan Reports are Solid Gold for Profitability

The following article highlights the significance of pre-scans and post-scans, particularly with Snap-on scan tools, showcasing their efficiency in diagnosing issues and preventing...

Unlock Precision and Certainty: TRITON-D10 Webinar Training for Advanced Vehicle Diagnostics

The TRITON-D10 lets you dig deep into the systems of a vehicle and evaluate performance with comparative data, systematically eliminating the unnecessary to provide you with only...

APOLLO-D9: Trustworthy Diagnostics for Precision Repairs

The APOLLO-D9 provides the diagnostic information and resources you need to get the job done. No more hunting through forums or endlessly searching to find the right answers. ...

Voice Your Opinion!

To join the conversation, and become an exclusive member of Vehicle Service Pros, create an account today!