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16-ENG
Check Valve - Inspection and Replacement
Remove and inspect the check valve at least once a year or more often if the air
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 air 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. Remove pressure release tube.
5. Unscrew the check valve.
6. Check that the valve disc moves freely and that the springholds 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.
9. Replace pressure release tube.
10. Perform the Break-in procedure.
Safety Valve - Inspection and Replacement (Fig. 6)
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.
1. Remove and lock out power from the air compressor. Release any air pressure
from the air tank.
2. Remove safety valve and replace with valve of the same pressure rating.
3. Apply thread sealant to new safety valve and tighten. DO NOT OVERTIGHTEN.
SAFETY VALVE
Fig. 6
Belt - Replacement
SERIOUS INJURY OR DAMAGE MAY OCCUR IF PARTS
OF THE BODY OR LOOSE ITEMS GET CAUGHT IN MOVING PARTS.
NEVER OPERATE THE UNIT WITH THE BELT GUARD REMOVED. THE
BELT GUARD SHOULD BE REMOVED ONLY WHEN THE AIR
COMPRESSOR POWER IS DISCONNECTED.
1. Remove and lock out power from the compressor.
2. Remove beltguard screws and beltguard.
3. Remove belt and replace.