DeVillbiss Air Power Company MG3-OLPORT-3A, SP-100-F warranty Maintenance, Service Instructions

MAINTENANCE

UNIT CYCLES AUTOMATICALLY WHEN POWER IS ON. DURING MAINTENANCE, YOU COULD BE EXPOSED TO VOLTAGE SOURCES, COM- PRESSED AIR OR MOVING PARTS. PERSONAL INJURIES CAN OCCUR. UNPLUG THE UNIT AND BLEED OFF ALL AIR TANK PRESSURE BEFORE DOING ANY MAINTENANCE OR REPAIR. NEVER OPERATE THE UNIT WITH THE BELT GUARD REMOVED.

To ensure efficient operation and longer life of the air com- pressor outfit, a routine maintenance schedule should be prepared and followed. The following routine maintenance schedule is geared to an outfit in a normal working environ- ment operating on a daily basis. If necessary, the schedule should be modified to suit the conditions under which your compressor is used. The modifications will depend upon the hours of operation and the working environment. Compressor outfits in an extremely dirty and/or hostile environment will require a greater frequency of all maintenance checks. Lubri- cate compressor motor (if required) according to manufacturer's instructions, which are attached to your motor.

Routine Maintenance Schedule

Daily:

1.Check oil level. Add if necessary.

2.Drain water from the air tank, any moisture separators or transformers.

3.Check for any unusual noise and/or vibration.

4.Manually check all safety valves to make sure they are operating properly.

5.Inspect for oil leaks and repair any leaks found.

6.Inspect air filter, replace if necessary.

Every 40 Hours of Operation:

1.Clean and inspect the air intake filter; replace if necesssary.

2.Inspect condition of drive belt; replace if necessary.

Every 100 Hours of Operation:

1.Drain and refill compressor crankcase with 16 fluid ounces (473.2 ml) of clean compressor or Castrol Heavy Duty 30 weight .

2.Increase frequency of oil changes if humidity or operating conditions are extreme.

Every 160 Hours of Operation:

1.Check drive belt tension; adjust if necessary. (Refer to SERVICE INSTRUCTIONS in this manual.)

2.Inspect air lines and fittings for leaks; correct as neces- sary.

3.Check the alignment of the motor pulley to the flywheel. If necessary, align to within 1/32 inch on centerline.

Each Year of Operation or if a Problem is Suspected:

Check condition of air compressor pump intake and exhaust valves. Replace if damaged or worn out.

SERVICE INSTRUCTIONS

Air Filter - Inspection and Replacement

Keep the air filter clean at all times. Do not operate the compressor with the air filter re- moved.

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. On some models, the filter may be removed by using a pair of needle nosed pliers or a screwdriver. Pull or pry out the old filter. Push in the new air filter. Other models require removal of the belt guard and/ or filter retainer.

Oil - Checking and Changing

Overfilling with oil will cause premature com- pressor failure. Do not overfill.

Check oil level in the crankcase daily. Remove the oil fill plug. The oil level should be even with the top of the fill hole and must not be allowed to be lower than 3/8" from the top (6 threads) at any time. It is recommended that the oil be changed after every 100 hours of operation. To drain the oil, remove the oil drain plug and collect the oil in a suitable container. Be sure to replace the plug securely before adding new oil. Use a compressor oil such as Castrol Heavy Duty 30 weight. Crank- case oil capacity is 16 fluid ounces (473.2 ml).

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.Unplug compressor. Release air pressure from the air tank.

2.Loosen the top and bottom tube nuts and remove the outlet tube.

3.Unscrew the check valve (turn counterclockwise) using socket wrench (7/8").

4.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.

5.Apply sealant to the check valve threads. Reinstall the check valve (turn clockwise). Do not overtighten.

6.Replace the outlet tube and tighten top and bottom tube nuts.

Safety Valve - Inspection and Replacement

IF THE SAFETY VALVE DOES NOT WORK PROP- ERLY, OVER-PRESSURIZATION MAY OCCUR CAUSING AIR TANK RUPTURE OR EXPLOSION. DAILY PULL THE RING ON THE SAFETY VALVE TO MAKE SURE THAT THE SAFETY VALVE OP- ERATES FREELY. IF THE VALVE IS STUCK OR DOES NOT OPERATE SMOOTHLY, IT MUST BE REPLACED WITH A VALVE HAVING THE SAME PRESSURE RATING.

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