Answer: The notation CFM (Cubic Feet per Minute) refers to a volume of air produced by the air compressor at a given pressure or PSI (Pound per Square Inch)
Answer: A compressor’s duty cycle determines the percentage of run time in a full cycle. A full cycle is determined by adding the compressor run time to its rest time.
Answer: No, you’ve got to remember that duty cycle is rated at 100PSI, at an ambient temperature of 72°F, but certainly a 100% duty cycle compressor can run for much longer periods of time than a 30% duty compressor under the same conditions.
Answer: The 400C pump is rated at 150psi working pressure and the duty cycle on this unit is rated at 33% duty at 100psi in 72-degree ambient temp. The 450C is rated at 150psi working pressure, the duty is rated at 100% at 100psi at 72 degrees ambient temp. TIP: If you need duty cycle, go with the 450C. If you want speed, go with the 400C (it is faster than the 450C).
Answer: Here are some suggested component parts for an onboard air system:
TA-508: 5.0 Gallon Tank with 8 Ports
PS-150R: 110/150 PSI Pressure Switch
VA00035: 35ft Hose with Close-ended Tire Chuck
Answer: No, they do not. Typically after an install, you should power up the system from 0 to whatever the cut-off pressure is and check for any leaks that may be present.
Answer: You can check for leaks by putting soap and water solution where the fitting connections are. If there are bubbles present that grow in size, then there are leaks.
Answer: This depends on several factors such as available space, whether or not the compressor is of a sealed or vented type, as well as personal preference and aesthetics. Make sure to utilize the rubber insulators to keep vibration and noise to a minimum.
Answer: Manufacturers will normally specify if a compressor is sealed against moisture and dust, and in many cases, you can tell the difference by simply inspecting the compressor. If you see vents, cracks, or holes in the motor housing, then the compressor is not sealed and must be kept away from dust and moisture.
Answer: The preference of a sealed-type compressor is due to the fact that in mobile pneumatics, compressors are likely to be exposed to outside elements.
Answer: The 550C is not a sealed unit. If you want to mount a compressor under your truck, you might want to take a look at our 450 series. While it is not as fast as the 550 series, it is moisture and dust resistant and can be mounted under your truck. Also, we have new compressors that are more suited to exterior mounting (420, 460C, and 480C).
Answer: Yes, you can mount our compressors in any direction or position because they are oil-less. The only position we do not recommend is an upside-down mount since heat tends to travel upward.
Answer: If you mount your compressor sideways to the frame rail, you should periodically check to make sure that your compressor is mounted securely. Use a thread-locking compound to keep the screws from backing off and causing the compressor to be mounted loosely.
Answer: Yes, it is possible to use one pressure switch on more than one compressor. You should always run a relay if you want to hook up multiple compressors to a single switch. You should check the amp draw on the switch first, and then you’ll know how many compressors you can hook up to one switch.
Answer: We don’t recommend that you use adjustable pressure switches with any VIAIR compressor. If you use an adjustable pressure switch, you can set the pressure switch higher than the maximum pressure that is rated for your compressor, or you may exceed the maximum rated working pressure for your air supply tank. Doing so will immediately void your warranty, not to mention, it is dangerous.
Answer: Yes, the lower the amp draw, the better the compressor is. As a rule of thumb, the maximum amperage that a compressor should require is 30amps.