Before checking for trouble with air system, manually depress the head to make sure there is no mechanical malfunction or frozen bearings. The head be able to come down, and when released return to a full open position.
a. Check for loose tubing and tubing fittings. Tighten where necessary.
b. Make sure air supply is on and that there is at least 80 Ibs, at inlet to press.
c. Set "Finish-Rite" control to "High", the gauge should read 80 Ibs.
d. Closing cylinder speed control valve should be set for full open position. Turn handle counterclock wise as far as it will go. Test press closing.
e. Locate closing valve Fig.7. Remove tubing fitting from the supply line to the closing cylinder Operate valve. There should be a very strong steady blast of air from the valve where tubing was removed. If air is present the trouble is a worn piston cup in the closing cylinder. Refer to Fig.6 for disassembly and part numbers. If no air comes through valve make sure that the valve is in good contact with its operating lever. Adjust valve operating set screw for good contact. Test closing valve again. If air still does not come from valve remove the air supply line to the valve. Hold nylon tubing secrucly when loosening because a "whipping" action may result with the tube, if there is air coming from it. If air comes from the loosened tubing the problem is in the closing valve, replace or repair. If no air comes from loosened tubing, the problem is a clogged strainer or air filter. Repair or replace.