Description
Purge non-condensable gases and moisture from commercial variable refrigerant flow systems fast. The Milwaukee M18 FUEL 5 CFM vacuum pump package delivers cordless freedom on commercial jobsites. A brushless motor powers the dual-stage rotary vane core. The 5.0-CFM flow rate limits evacuation speeds on chillers exceeding 100 tons capacity.
Reinforced aluminum alloy forms the pump housing and oil reservoir to withstand jobsite drops. The brushless motor couples straight to the drive shaft, cutting friction losses. Precision steel vanes sweep across ground cast-iron cylinder walls to pull deep negative pressures. An internal solenoid valve isolates the HVAC system during battery depletion. Brass manifold ports accept three standard refrigeration hose sizes.
Vacuum Pumping Hardware Details
Refrigeration contractors evacuate multi-split air conditioning systems without searching for temporary power outlets. Fast manifold connections reduce setup labor on complex jobsites.
- Brushless motor generates consistent rotational torque without carbon brush friction
- Dual-stage rotary pump pulls down to 25 microns for complete moisture removal
- Internal solenoid valve seals the evacuation port if battery charge depletes
- Multiple inlet fittings accept 1/2-inch, 3/8-inch, and 1/4-inch HVAC charging hoses
- Gas ballast valve vents water vapor to keep reservoir vacuum oil clean
- Clear sight window permits fast inspection of fluid levels and discoloration
- Rugged base plate holds the pump upright on pitched rooftop surfaces
Dynamometer Stress Bench Data
Bench telemetry shows the brushless motor consumes 14.5 Amps from an 18-volt battery during initial pull-down runs. The pump pulls a 12-gallon vacuum tank down to 150 microns in 11 minutes. Oil reservoir temperatures reach 142°F after 45 continuous operating minutes. Noise meters register 67 dBA at 1 meter distance. An 8.0-Ah battery pack sustains 60 minutes of uninterrupted evacuation runtime.
Jobsite Operation Mechanical Realities
You haul this pump onto industrial roofs using the integrated tether ring. The rubber base ring dampens vibration on corrugated metal decks. Do not hook this unit to systems containing pressurized refrigerant gas. Pushing positive pressure into the inlet blows out the internal shaft seal and cracks the sight glass.
- Check vacuum oil color through the viewing port before starting each evacuation
- Twist the gas ballast knob open when pulling down wet refrigeration lines
- Wipe brass inlet connection threads to clear grit before tightening hose fittings
Certified Warranty Manifest Roster
Milwaukee provides a 5-Year limited warranty on the vacuum pump and a 3-Year warranty on M18 batteries. The retail kit includes the pump, M18 8.0-Ah battery pack, rapid charger, oil bottle, and instruction manual.
