North Star NSLA1683066 Owner's Manual

North Star NSLA1683066 Owner's Manual Manual pdf 25 page image

Page 25 of 36Inspect Air Lines and Fittings for Leaks1. Set the Auto/Off lever to OFF, unplug the unit, and relieve all air pressure from the air tank.2. Apply a soap solution to all air line fittings and connections/piping.3. Correct any leaks found.IMPORTANT: Even minor leaks can cause the air compressor to overwork, resulting in a prematurebreakdown or inadequate performance.Air Compressor Head Bolts - TorqueingThe air compressor pump head bolts should be kept properly torqued. Check the torques of the headbolts after the first five hours of operation. Torque to 14-16 ft./lb. (19-22 Nm).Service and AdjustmentsALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE PERFORMED BY TRAINEDSERVICE TECHNICIAN.To Replace or Clean Check Valve1. Release all air pressure from the air tank. See Draining Air Tank in the Maintenance section.2. Set the Auto/Off lever to OFF, unplug the unit, and relieve all airpressure from the air tank.3. Using an adjustable wrench, loosen the outlet tube nut at airtank and pump. Carefully move the outlet tube away from thecheck valve.4. Using an adjustable wrench, loosen the pressure relief tube nutat the air tank. Carefully move the pressure relief tube awayfrom the check valve.5. Unscrew the check valve (turn counter-clockwise) using a 7/8”open end wrench. Note the orientation for reassembly.6. Using a screwdriver, carefully push the valve disc up and down. NOTE: The valve disc should movefreely up and down on a spring which holds the valve disc in the closed position. If not, the checkvalve needs to be cleaned or replaced.7. Clean or replace the check valve. A solvent, such as paint or varnish remover, can be used to cleanthe check valve.8. Apply sealant to the check valve threads. Reinstall the check valve (turn clockwise).9. Replace the pressure release tube. Tighten the nuts.10. Replace the outlet tube and tighten the nuts.11. Perform the Break-in Procedure. See the Break-in Procedure section in How to Use Your Unit.⚠WARNING• Risk of bursting. Do not drill into, weld, or otherwise modify air tank or it will weaken. The air tankcan rupture or explode.Figure M