Allmand Bros. has expanded its product offering to include portable air compressors. The new Maxi-Air compressor models, MA185 and MA400, the latter available only in Canada, feature a heavy-duty, over-sized rotary-screw air end and provide a free-air delivery of 185 and 400 scfm, respectively, at a maximum working pressure of 120 psi. According to Allmand Bros., two 3/4-inch “Chicago-style” fittings enhance utility by providing high air output. The MA185 uses a 48-horsepower Tier 4-Final Yanmar engine and has an operating weight of 2,450 pounds; the MA400 uses a Tier 3 Isuzu engine and has an operating weight of 5,000 pounds.
According to the manufacturer, a high-capacity cold-start battery increases cold-cranking amperage to ensure easy starting, and sound-attenuated airflow reduces operating noise to 63 dB(A). Large-capacity fuel tanks require fueling only every 8 hours, says the manufacturer, and an electric fuel-primer/air-bleed pump facilitates restarting. All fluids are plumbed to the curbside edge of the enclosure for maintenance access, and an externally mounted water separator filter is included.
The heavy-duty steel enclosure and the frame of the undercarriage have powder-coat paint, and the enclosure features stainless-steel hardware to resist corrosion, says Allmand Bros. The units use wear 15-inch tires and provide an adjustable coupler channel to allowing towing the trailer level with the ground.