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How to set the Van Air RC 40 Compressor
Start by making sure the main hydraulic system pressures are at correct settings.
Have the truck running, the hydraulic system engaged, and the system at normal
operating temperature.
The compressor's rpm's are factory set at 840 to 865 RPM (Do not exceed 865
RPM). Begin by letting the air compressor run for fifteen minutes to warm up while
venting to the atmosphere. Now stop venting the air and let pressure build up to check at
what PSI the compressor shuts off. You will get the PSI reading from the FLR (Filter-
Lubricator-Regulator) gauge that is in-line with the air reel. To adjust the pressure
settings, access the pressure switch through the removable service panel. Remove the
cover from the pressure switch and adjust by turning the screw between the four
terminals. Turning in will increase pressure and turning out will decrease pressure. The
small adjuster will affect the differential level only. Set the shut-off pressure at 150psi.
The start-up pressure will normally be set 30psi lower.
Note: The Max air pressure of the system is 165psi.
Set Max RPM with 0-60psi with air venting to atmosphere.
Hydraulic motor requirements: 14 GPM @ 1700 PSI
Maintenance tips:
Change the oil once a year or 500 hours.
Change the oil more often under harsher conditions.
Van Air recommends Synthetic 10W-30 or 5W-30 or Van Air Kit 1091
Created by Kbeltman
12/19/11
J:\Sales\_Customer Service\Service Body Manual\Compressors
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