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Manafacture: DeVillbiss Air Power Company
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manual abstract
(Refer to Service Instructions in this manual.) 2. Inspect air lines and fittings for leaks; correct as necessary. 3. Check the alignment of the motor pulley to the fly wheel. If necessary, align to within 1/32 inch on centerline. Every 300 Hours of Operation 1. Drain and refill compressor crankcase with clean oil. Refer to Service Instructions for recommended oils. 2. Increase frequency of oil changes if humidity or operating conditions are extreme. Each Year of Operation (2000 Hours or if a Problem is Suspected) Check condition of air compressor pump intake and exhaust valves. Replace if damaged or worn out. 14—ENG MGP-SL10120H-2A SERVICE INSTRUCTIONS Air Filter - Inspection and Replacement NOTE NOTENOTENOTENOTENOTE Keep the air filter clean at all times. Do not operate the compressor with the air filter removed. A dirty air filter will not allow the compressor to operate at full capacity. Before you use the compressor, check the air filter to be sure it is clean. If it is dirty, replace it with a new filter. Oil - Checking and Changing Overfilling with oil will cause premature compressor failure. Do not overfill. 1. Check oil level in compressor crankcase before each use. The oil level should be to the middle of the oil sight glass. 2. Replace the oil after initial 100 hours of operation -thereafter, every 300 hours of operation. 3. Remove the oil fill and drain plugs. Collect the oil in a suitable container. 4. Replace the oil drain plug and refill the crankcase with recommended oil. Always fill to middle of sight glass. Note NoteNoteNoteNoteNote It is important to maintain the proper oil level. A low oil level reduces proper cylinder wall lubrication and increases ring wear. 5. Replace the oil fill plug. 6. Start the compressor outfit and run for several minutes. Shut the compressor down and check the oil level. If necessary, add more oil. Oil Chart Room or Ambient Temperature Oil Weight Type Cold Climates - 10. F 20 Wt. Reciprocating Non-detergent petroleum based compressor rated or better oil Moderate Climates 30 . to 80. F 30 Wt. Hot Climates -80. F 40 Wt. A compressor gradenon-detergent oil should be used. Most automotive detergent oils cause excessive carbon buildup and should not be used. Please note that all units run at a constant speed (not start and stop) and should be lubricated by Rarus 847, Shell turbo 100, or Anderol synthetic compressor oil. Do not use synthetic oil for the first 300 hours. All units should be broken in on petroleum based oil. Check Valve - Inspection and Replacement Remove and inspect the check valve at least once a year or more often if the compressor is heavily used. Moisture and other contaminants in the hot compressed air will cause an accumulation of a carbon-like residue on the working parts. If the valve has heavy carbon build-up, it should be replaced. Use the following procedure to inspect, clean or replace the check valve. 1. Turn compressor off and disconnect or lock out power source. 2. Release air pressure from the air tank. 3. Loosen the top and bottom tube nuts and remove the outlet tube. 4. Loosen pressure release tube nuts, disconnect from check valve and move tube aside. 5. Unscrew the check valve with a wrench. 15—ENG MGP-SL10120H-2A SERVICE INSTRUCTIONS 6. Check that the valve disc moves freely and that the spring holds the disc in the upper, closed position. The check valve may be cleaned with a solvent. 7. Apply sealant to the check valve threads. Reinstall the check valve. Do not overtighten. 8. Replace the outlet tube and tighten top and bottom nuts. Do not overtighten. 9. Replace the pressure release tube and tighten nuts. Do not overtighten. Safety Valve - Inspection and Replacement IF THE SAFETY VALVE DOES NOT WORK PROPERLY, OVER-PRESSURIZATION MAY OCCUR, CAUSING AIR TANK RUPTURE OR EXPLOSION. OCCASIONALLY PULL THE RING ON THE SAFETY VALVE TO MAKE SURE THAT THE SAFETY VALVE OPERATES FREELY. IF THE VALVE IS STUCK OR DOES NOT OPERATE SMOOTHLY, IT MUST BE REPLACED WITH A VALVE HAVING THE SAME PRESSURE RATING. The safety valve is set at the factory to a pressure approximately 15 pounds higher than the rated pressure of the outfit. If the pressure switch malfunctions and does not shut off the motor automatically at maximum tank pressure, the safety valve will protect the air tank against excessive air pressure by popping off at its preset pressure. SERIOUS INJURY OR DAMAGE MAY OCCUR IF PARTS OF THE BODY OR LOOSE ITEMS GET CAUGHT IN MOVING PARTS. NEVER OPERATE THE OUTFIT WITH THE BELT GUARD REMOVED. THE BELT GUARD SHOULD BE REMOVED ONLY WHEN THE COMPRESSOR POWER IS DISCONNECTED. Adjusting Belt Tension Adjust belt tension as described below. For compressors with a motor slide mount, adjust belt tension as follows: 1. Slide motor away from compressor until desired tension is obtained. On two stage compressors, the belt should deflect 1/2" at midway between the pulley and the flywheel. 2. Tighten two outside cap screws enough to hold the motor in place...
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