1. COMPRESSOR @ PUMPS BEYOND “CUT-OUT” - Check gauge. - Check governor. - Be certain it pressurizes unloader port when above “cut-out.” - Check unloader/plungers. Lube, kit or change head. @ WON’T PUMP AIR - Check gauge. - Check compressor drive. - Check inlet valves and plungers. If stuck, leak will be evident at intake when unloaded. Install unloader kit, head kit or head assembly. @ SLOW PRESSURE BUILD-UP - Check gauge. - Check compressor drive. - Check intake for restriction. - Check discharge line for restriction. - Check unloader function. Lube or kit. - Check inlet and exhaust valves. Leak will be evident at intake when unloaded. Kit or exchange head. @ PUMPS EXCESSIVE OIL - Check oil return for restriction, kink or loop. - Check for gasket sealant obstructing drain. - Check for undersize return line (1/2” minimum). - Check for fitting restricting drain. - Check for intake vacuum (20” water maximum). - Check for excessive engine crankcase pressure (poor engine ventilation). - Check compressor ring wear. Exchange for service unit. |
2. WET TANK @ EXCESS OIL ACCUMULA See PUMPS EXCESSIVE OIL (above). @ EXCESS WATER ACCUMULA Drain daily. Install automatic drain on wet tank. @ DAMAGED WET TANK Replace. |
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