Dewalt DXCMH1608WB Instruction Manual - Page 20

English Glossary CFM: Cubic feet per minute. SCFM: Standard cubic feet per minute; a unit of measure of air delivery. PSI: Pounds per square inch; a unit of measure of pressure. Code Certification: Products that bear one or more of the following marks: UL®*, CUL, ETL®*, CETL, have been evaluated by OSHA certified independent safety laboratories and meet the applicable Standards for Safety. * UL® is a registered trademark of Underwriters Laboratories and ETL® is a registered trademark of Electrical Testing Laboratories. California Code: Unit may comply with California Code 462 (l) (2)/ (M) (2). Specification/model label is on the side of the air tank on units that comply with California Code. Unloader Blow-Off Pressure: All models are continuous running units controlled by air tank pressure. When the maximum air tank pressure is obtained, the unloader valve will blow-off. This will cause the compressor to exhaust the air to the atmosphere and not the tank. This decreases the load on the engine and allows it to run at a near no-load condition. Unloader Reset Pressure: When the air tank pressure drops to a predetermined point, the unloader valve closes. The air tank pressure will now increase until it reaches the unloader blow-off pressure. Troubleshooting Guide This section provides a list of the more frequently encountered malfunctions, their causes and corrective actions. The operator or maintenance personnel can perform some corrective actions, and others may require the assistance of a qualified DeWalt technician or your dealer. Problem Code Excessive air tank pressure-safety valve pops off 1 Air leaks 2 Continuous air leak at unloader valve 3 Air leaks in air tank or at air tank welds 4 Air leaks between head and valve plate 5 Air leaks from safety valve 6 Compressor is not supplying enough air to operate accessories 2, 7, 8, 9, 10, 12, 13 Restricted air intake 12 Excessive vibration 14, 15 20