Simple ways to save time during service calls

When the hot weather service crunch hits, you need all the help you can get – including these tips to make service faster and more efficient.

Avoid Overkill

The most common time-waster in typical evacuation procedures is overkill, or just letting the pump run for a specified time.  Why spend extra time pulling a vacuum when you can easily monitor the vacuum level and stop the pump as soon as the system is dehydrated?

A thermistor vacuum gauge clearly shows when the system is clean and dry and ready for a recharge.  On the other hand, you can tell if moisture and other contaminants remain in the system, requiring longer evacuation.  A thermistor gauge also indicates leaks; a system that won't hold a deep vacuum level probably has a leak that should be fixed.

Remove the Restriction

The valve cores in system access fittings drastically restrict the flow in and out of the system during both evacuation and recharging.  Removing the valve core saves valuable time and actually improves the efficiency of the vacuum pump.  A remover/installer such as Robinair's model 14650 makes it simple to do.  Just connect the tool to the access fitting, then tighten the top valve.  This closes off the system, retaining the charge ad preventing contamination.  Then, unscrew the core and open the top valve.  You can evacuate and recharge through the tool while the core is held inside the tool body, out of the way.

To finish, just valve off the system and re-install the core.  It's quick and simple and can save 30% or more time over service done with the valve core in place.