Robinair 15600 CoolTech VacuMaster High Performance Vacuum Pump-6 CFM

• Thoroughly evacuate today's tighter systems with their increased sensitivity to contaminants.
• Iso-ValveTM isolates pump from system, making it easy to measure rate of rise.
• Offset rotary vanes work in conjunction with the vacuum pump oil to create a powerful compression inside the pumping chamber.
• Vacuum pump efficiency depends largely on the purity of the vacuum pump oil. The gas ballast feature helps keep the oil clean for a longer time by introducing a small amount of dry atmospheric air to prevent condensation of moisture within the pumping chamber.
• Two stage vacuum pump design for greater efficiency - the second stage of the two-stage design starts pumping at a lower pressure to pull a deeper ultimate vacuum.
• The inlet filter prevents contaminants from entering the pumping chamber; check valve prevents oil from backing up into system during a power outage.
• Heavy duty motor is easy to start and efficient to operate.
• The power switch is located on the handle assembly to protect it from accidentally being turned on or off.
• Sure grip handle stays cool to the touch and directs exhaust away from you.

Importance of a Deep Vacuum:

The purpose of a vacuum pump is to remove moisture and air.  Modern systems are built tighter and charges are more critical.  That means these systems have a greater sensitivity to moisture and other contaminants, make a thorough evacuation even more important.

Moisture in a refrigeration system, directly or indirectly, is the cause of most problems & complaints.  First, moisture can cause freeze-up in a system.  Moisture is picked up by the refrigerant and transported through the refrigerant line in a fine mist, with ice crystals forming at the point of expansion.

Freeze-up is not the only problems caused by moisture.  It can also cause corrosion, the effects of which are not apparent until the real damage occurred.  Moisture is bad enough, but combined with refrigerants containing chlorine, hydrochloric acids can form.  These greatly increase the corrosion of metals.

A vacuum pump removes trouble some moisture by lowering the pressure within the system and vaporizing (or boiling off) the moisture, then exhausting it along with the air.

Cool-Tech Vacuum Pump

A vacuum pump that's fast and thorough saves you not only time, but also expense of callbacks and dissatisfied customers.  Robinair vacuum pumps perform better than other vacuum pumps in the industry, assuring you complete dehydration before recharging.

Robinair vacuum pumps are engineered specifically to meet the needs of A/C work you're doing today, and to give you trouble free operation.  Robinair Cool-Tech pumps are designed for use on systems using CFCs, HCFCs, and HFCs in conjunction with mineral oil, ester oil, alkylbenzene oil and PAG oil as lubricants.  The vacuum pump has a two stage design and cleans the system more thoroughly than a single stage pump: the second stage starts pumping at a lower pressure so you can pull a deeper vacuum.

Vacuum Pump Oil

Change your vacuum pump oil frequently.  Clean oil is important for peak vacuum pump performance.  When the oil is contaminated, it reduces your pump's ability to remove moisture from the system.  You should change the pump oil frequently and especially in the following situations:

• You have just evacuated a system that you suspect was overly moisture laden.
• You have just evacuated a system with a compressor burnout.
• The pump oil looks cloudy or milky.
• The pump will not pull to factory specifications when blanked off to an electronic thermistor vacuum gauge.
• Every 10 hours operation