11. EXCESSIVE OIL IN DISCHARGE LINE.

15. IMPROPER UNLOADING CAUSING SAFETY RELIEF VALVE TO OPEN

TM-5-4310-451-14 Compressor Unit Reciprocating 5.0 CFM Model CAPITANO-PD Manual
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TM 5-4310-451-14 Table 4-2. Mechanical Troubleshooting (Con’t). MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 2 Check for defective blowdown valve diaphragm. Replace blowdown valve (see paragraph 4-88). 11. EXCESSIVE OIL IN DISCHARGE LINE. Check for oil carry-over into discharge line. Replace oil separator element (see paragraph 4-90). 12. AIR DISCHARGE PRESSURE TOO LOW. Step 1 Check blowdown valve for leaks. Tighten or replace blowdown valve (see paragraph 4-88). Step 2 Check pressure regulating valve for leaks. Tighten or replace pressure regulating valve (see paragraph 4-87). Step 3 Check pressure regulating valve adjustment. Adjust pressure regulating valve (see paragraph 2-11). Step 4 Check for damaged oil separator element. Replace oil separator element (see paragraph 4-90). 13. EXCESSIVE OIL CONSUMPTION. Step 1 Check for defective blowdown valve. Replace blowdown valve (see paragraph 4-88). Step 2 Check for damaged oil separator element or oil carry-over into discharge line. Replace oil separator element (see paragraph 4-90). 14. UNIT WILL NOT UNLOAD. Step 1 Check for blocked regulating valve inlet. Remove and clean pressure regulating valve (see paragraph 4-87). Step 2 Check pressure regulating valve adjustment. Perform pressure regulating valve adjustment (see paragraph 2-11). Step 3 Check for defective blowdown valve. Replace blowdown valve (see paragraph 4-88). 4-11

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