Dewalt DXCMV5248069 Instruction Manual - Page 21
Inspect Air Lines and Fittings for Leaks
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English of the motor drive pulley and equalize B1 and B2, using care not to disturb the belt alignment performed in step 2. 8. Retightenthemotordrivepulleysetscrew.Torqueto145-165inlbs (16.4-20.3 Nm). 9. Reinstall belt guard. Air Compressor Pump Intake and Exhaust Valves Once a year have a Trained Service Technician check the air compressor pump intake and exhaust valves. Inspect Air Lines and Fittings for Leaks 1. Set the Auto/Off lever to "Off", shut off the main power disconnect, 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 premature breakdown or inadequate performance. Air compressor Head Bolts - Torquing The air compressor pump head bolts should be kept properly torqued. Check the torques of the head bolts after the first five hours of operation. Torque to 14-16 ft.‑lbs. (18.9-21.7 Nm). Service and Adjustments ALL MAINTENANCE AND REPAIR OPERATIONS NOT LISTED MUST BE PERFORMED BY TRAINED SERVICE TECHNICIAN. WARNING: Risk of unsafe operation. Unit cycles automatically when power is on. When servicing, you may be exposed to voltage sources, compressed air, or moving parts. Before servicing unit unplug or disconnect electrical supply to the air compressor, bleed tank of pressure, and allow the air compressor to cool. To Replace or Clean Check Valve 1. Release all air pressure from air tank. See Draining Air Tank in the Maintenance section. 2. Set the Auto/Off lever to "Off", shut off the main power disconnect, and relieve all air pressure from the air tank. 3. Using an adjustable wrench loosen outlet tube nut at air tank and pump. Carefully move outlet tube Screwdriver away from check In open valve. position 4. Using an adjustable nothing is visible. wrench loosen pres- sure relief tube nut at air tank. Carefully In closed position disc is visible. move pressure relief tube away from check valve. 5. Unscrew the check valve (turn counterclockwise) 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 move freely up and down on a spring which holds the valve disc in the closed position, if not the check valve 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 clean the check valve. 8. Apply sealant to the check valve threads. Reinstall the check valve (turn clockwise). 21