VACUUM PUMPS + OIL
VACUUM PUMPS AND VACUUM PUMP OIL IN CENTRAL ARKANSAS
Premium High Vacuum Pump Oil
The performance of your pump depends largely on the quality and purity of the vacuum pump oil. Robinair’s oil is engineered to maintain maximum viscosity at high running temperatures and to improve cold weather starts.
To keep the pump operating at peak ef ciency, change the oil frequently. Moisture and other contaminants can quickly deteriorate the purity of the oil, thinning the oil, and reducing the pump’s ability to reach deep vacuum conditions.
Thermally Stable
Laboratory tests prove that Robinair oil is more thermally stable in comparison to other leading brands, which means it resists breaking down due to heat for a longer period of time.
Lower Moisture Content
Robinair oil has a lower moisture content than other oils, thanks to our special packaging and handling procedures. Moisture degrades the oil’s purity, thinning it, and reducing the pump’s ability to reach a deep vacuum.
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 a 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 of operation.
The Importance of Deep Vacuum
The purpose of a vacuum pump is to remove moisture and air from an A/C-R system. Modern systems are built tighter and charges are more critical. That means these systems have a greater sensitivity to moisture and other contaminants, making thorough evacuation more important than ever before.
Moisture in a refrigeration system, directly or indirectly, is the cause of most problems and 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 problem caused by moisture.
It can also result in corrosion, the effects of which are not apparent until the real damage has occurred. Moisture alone is bad enough, but combined with refrigerants containing chlorine, hydrochloric acids can form. These greatly increase the corrosion of metals.
Also, refrigerant oil rapidly absorbs moisture. Water-formed acids combine with the refrigerant, forming a closely bonded mixture of ne globules. The effect is called sludging and it greatly reduces the lubricating ability of the oil.
A vacuum pump removes troublesome moisture by lowering the pressure within the system and vaporizing (or boiling off) the moisture, then exhausting it along with air.
CoolTech – The Inside Story
A vacuum pump that’s fast and thorough saves you not only time, but also the expense of callbacks and dissatisfied customers. Robinair pumps perform better than other pumps in the industry, ensuring you complete dehydration before recharging.
Robinair pumps are engineered speci cally to meet the needs of the kind of A/C work you’re doing today, and to give you trouble-free operation. We’ve put our years of experience and know-how into developing pumps that help you do the job faster and better.
All Robinair pumps are backed by our exclusive “No Hassle” over-the- counter replacement warranty. You can return a pump to your Robinair distributor for an immediate exchange — with no hassle!
Robinair CoolTech vacuum pumps are designed for use on A/C-R systems using CFCs, HCFCs, and HFCs in conjunction with mineral oil, ester oil, alkylbenzene oil, and PAG oil as lubricants. Do not use them with ammonia or lithium bromide systems; not for use with flammable refrigerants.
Selecting the right size pump
The more air a pump moves, the faster it can reach an acceptable vacuum. A smaller pump takes more time to evacuate a system than one that’s the correct size for the job.
| System | Robinair Pump | VacuMaster Pump |
|---|---|---|
| Up to 10 tons (35kW); Domestic Refrigeration, Passenger Cars | - | 1.5 CFM (35 l/m) |
| Up to 30 tons (105kW); Residential A/C, Panel Trucks & RVs | 4 CFM (93 l/m) | 3 CFM (71 l/m) |
| Up to 50 tons (176kW); Rooftop A/C systems, Tractor/Trailers, Buses | 6 CFM ( 142 l/m) | 5 CFM (118 l/m) |
| Up to 70 tons (246kW) | 10 CFM (236 l/m) | 8 CFM |
| Oil Fill Port | Heavy Duty Motor | Two-Stage Design | Molded Base | Die-Cast | Oil Drain Valve | Offset Rotary Vanes | Iso-Valve | Gas Ballast | |
|---|---|---|---|---|---|---|---|---|---|
| Robinair® Pumps | • | • | • | • | • | • | • | • | • |
| VacuMaster® Pumps | • | • | • | • | • |
Robinair Vacuum Pumps
- Power and capacity for a wide range of service applications.
- High CFM rating for fast, thorough evacuation.
- Two-stage rotary vane design.
Iso-ValveTM
– Isolates the pump from the system with just a quarter-turn.
Gas Ballast
– Moisture laden air passing through the pump mixes with relatively dry air so compression
does not cause condensation.
Two-stage Design
– 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, ultimate vacuum.
Oil Drain Valve
– Positioned at the bottom of the oil reservoir and angled for faster, more complete draining.
Oil Fill Port
– Makes adding oil simple since the port is accessible from the front or either side. The sight
glass on the front of the pump shows you when enough oil has been added.
Heavy-Duty Motor
– High torque design for easy startup and ef cient operation.
Offset Rotary Vanes
– Proven design builds a powerful compression within the pumping chamber to reduce system pressure and vaporize moisture so it can be exhausted along with air.
Molded Base
– Durable polycarbonate base improves pump balance and minimizes vibration during operation.
Die-Cast Aluminum Housing
– Cast aluminum housings make the pumps lightweight and durable.
15120A – 10 CFM
15600 – 6 CFM,
15400 – 4 CFM,
15434 – 4 CFM
VacuMasterEconomy Vacuum Pumps
- Performance tested to meet Robinair’s high standards
- Power and capacity for a wide range of service applications.
- High CFM rating for fast, thorough evacuation.
- Two-stage rotary vane design
Two-stage Design
– 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, ultimate vacuum.
Oil Drain Valve
– Positioned at the bottom of the oil reservoir and angled for faster, more complete draining.
Oil Fill Port
– Makes adding oil simple since the port is accessible from the front or either side. The sight glass on the front of the pump shows you when enough oil has been added.
Heavy-Duty Motor
– High torque design for easy startup and efficient operation.
Die-Cast Aluminum Housing
– Cast aluminum housings make the pumps lightweight and durable.
15150 – 1.5 CFM
15300 – 3 CFM
15500 – 5 CFM
15800 – 8 CFM
VacuMasterSingle-Stage Vacuum Pumps
- Performance tested to meet Robinair’s high standards
- High CFM rating for fast, thorough evacuation.
The one-stage rotary vane design
– provides powerful, quiet, high vacuum capability and ensures moisture removal, while the high pumping capacity reduces evacuation time.
Oil Drain Valve
– Positioned at the bottom of the oil reservoir and angled for faster, more complete draining.
Oil Fill Port
– Makes adding oil simple since the port is accessible from the front or either side. The sight glass on the front of the pump shows you when enough oil has been added.
The intake screen
– prevents foreign matter from entering the pumping chamber, and an internal exhaust filter separates oil vapor from the exhaust flow.
Aluminum housing and rotary vanes
– Lightweight and easily portable.
15115 – 1.5 CFM
15310 – 3 CFM
15510 – 5 CFM
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