Table 5-4.  Troubleshooting - Continued TROUBLE PROBABLE CAUSE REMEDY 11. Compressor Output Pres- 1.   Unload control pressure switch out 1.   Adjust the unload control pressure sure gauge indication of adjustment or faulty switch or replace if faulty.  Refer to higher than 3200 psi Operational Checkout, Section V. (22,048 kPa) while compressor is in load 2.   Accumulated condensate not being 2.   Place compressor unloader switch mode disposed of fast enough or often to unload position.  Unloading enough. should occur at least once every 90 minutes.  If not, refer to probable cause No. 3. 3.   Clogged orifice of continuous bleed 3.   Clean orifices of bleed valves, and valve. screws in the strainers. 4.   Obstruction in air cooler tubing 4.   Remove the tubing and clean thor- oughly to remove obstruction. 5.   Compressor output pressure gauge 5.   Replace faulty gauge. indicating improperly. 12. Compressor Output Pres- 1.   Leaking compressor lines 1.   Tighten connections as necessary. sure gauge indication is Replace any tube or hose line leak- less than 3200 psi ing, or any fitting not seating (22,048 kPa) when corn- properly. pressor is loaded, or com- pressor does not deliver 2.   Safety valves on air cooler not 2.   Replace a leaking safety valve. enough air working properly. 3.   Valve in air compressor cylinder 3.   Replace defective valve assembly. head leaking or not working properly. 4.   Automatic drain valve leaking 4.   Remove and clean drain tubing, replace if necessary.  If the tubing is satisfactory check the adjustment on the pressure switch. 5.   Air leaking from mechanical filter 5.   Tighten the filter head assembly. 6.   Air leaking from dehydrators 6.   Tighten the dehydrator cap assem- Cyl’s 1 and 2, (19, 22, Figure 8-2) blies. 7.   Air leaking from air purification cylin-    7.   Tighten the air purifier cap assem- ders (3, 4, 5, 23, 24, 25, Figure 8-2) blies. 8.   Air leaking from ten-micron air 8.   Tighten filter bowl. filter. 9.   Air leaking past a compressor cylin- 9.   Replace the cylinder head gasket. der head gasket. Tighten cylinder head cap screws to correct torque value (Table 5-6). 10.Piston rings worn 10. Replace defective piston rings. 13.Air Compressor For Troubleshooting procedures, probable cause and remedies on Davey Compressor high pressure air ends, refer to Table 2-1, Test Stand, High Pressure Air End. 5-24