Silver aluminum Robin Air vacuum pump with blue control valve and clear oil sight glass

Professional HVAC Performance - Robin Air VacuMaster Vacuum Pump (15500, 5 CFM)

Two-Stage Design for Deeper Evacuation

The Robin Air 15500 VacuMaster is a professional-grade vacuum pump engineered for HVAC technicians who need reliable 5 CFM performance. This two-stage rotary vane system pulls deeper vacuum levels than single-stage units, achieving 35 micron ratings for complete moisture removal in air conditioning and refrigeration systems.

Key Features

Superior Vacuum Performance - Two-stage rotary vane design delivers 5 CFM displacement and pulls systems down to 35 microns, ensuring complete moisture removal and faster evacuation times compared to single-stage pumps.
Easy Oil Maintenance - Quick-access oil fill port and angled drain valve positioned at the reservoir bottom allow fast, complete oil changes. Large sight glass shows both oil level and condition at a glance.
Heavy-Duty Construction - Cast aluminum housing reduces weight while maintaining durability. High-torque 1/3 HP motor ensures reliable startup and efficient operation even under demanding conditions.

Perfect For These Applications

  • HVAC residential and commercial air conditioning systems up to 50 tons.
  • Automotive air conditioning service and repair.
  • Refrigeration equipment maintenance and installation.
  • Systems using CFCs, HCFCs, and HFCs with mineral, ester, alkyl benzene, or PAG oils.

Technical Specifications

Robin Air 15500 VacuMaster Specifications
Specification Value
Free Air Displacement 5 CFM
Factory Micron Rating 35 microns
Number of Stages 2
Motor Size 1/3 HP
Voltage 115V 60Hz
Oil Capacity 7.5 oz (220 ml)
Weight 28 lbs (12.2 kg)
Dimensions 10 x 5 x 13 in (255 x 123 x 336 mm)
Intake Fittings 1/4" MFL, 3/8" MFL, 3/8" FFL x 1/2" ACME adapter
Approvals CSA

Get Professional HVAC Results with the Robin Air 15500

Whether you're servicing residential units or commercial systems, this vacuum pump delivers the performance and reliability HVAC professionals demand.

Order your Robin Air 15500 VacuMaster today and experience superior evacuation performance.

Frequently Asked Questions

Q: How does this compare to single-stage vacuum pumps? A: The two-stage design pulls deeper vacuum levels reaching 35 microns compared to single-stage pumps that typically only achieve 100+ microns. The second stage starts pumping at lower pressure, allowing better ultimate vacuum and more thorough moisture removal from HVAC systems for professional results.
How does this compare to single-stage vacuum pumps?

The two-stage design pulls deeper vacuum levels reaching 35 microns compared to single-stage pumps that typically only achieve 100+ microns. The second stage starts pumping at lower pressure, allowing better ultimate vacuum and more thorough moisture removal from HVAC systems for professional results.

Q: What size air conditioning systems can this pump handle? A: This 5 CFM pump is rated for air conditioning systems up to 50 tons or 176 kW capacity, making it suitable for large rooftop commercial units, tractor-trailers, buses, and residential applications. The high CFM rating ensures fast evacuation times even on larger systems.
What size air conditioning systems can this pump handle?

This 5 CFM pump is rated for air conditioning systems up to 50 tons or 176 kW capacity, making it suitable for large rooftop commercial units, tractor-trailers, buses, and residential applications. The high CFM rating ensures fast evacuation times even on larger systems.

Q: How often should I change the oil? A: Change the oil after every 8-10 uses or when the sight glass shows dark or contaminated oil. The angled drain valve at the reservoir bottom and accessible top fill port make oil changes quick and complete, requiring only 7.5 oz of vacuum pump oil per change.
How often should I change the oil?

Change the oil after every 8-10 uses or when the sight glass shows dark or contaminated oil. The angled drain valve at the reservoir bottom and accessible top fill port make oil changes quick and complete, requiring only 7.5 oz of vacuum pump oil per change.

Q: What refrigerants and oils are compatible with this pump? A: This pump works with CFCs, HCFCs, and HFCs in conjunction with mineral oil, ester oil, alkyl benzene oil, and PAG oil lubricants. It is not compatible with ammonia systems, lithium bromide applications, or A4L and other flammable refrigerants for safety reasons.
What refrigerants and oils are compatible with this pump?

This pump works with CFCs, HCFCs, and HFCs in conjunction with mineral oil, ester oil, alkyl benzene oil, and PAG oil lubricants. It is not compatible with ammonia systems, lithium bromide applications, or A4L and other flammable refrigerants for safety reasons.

About the Brand

Robinair

View All Robinair Products

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