John Deere AC1-5GS - Manual (Page 9)

John Deere Hand Carry Gasoline Air Compressor Manual 9
SAFETY RELIEF VALVE: This valve is designed to prevent system failures by re-
lieving pressure from the system when the compressed air reaches a predetermined
level. The valve is preset by the manufacturer and must not be modified in any way.
To verify the valve is working properly, pull on the ring. Air pressure should escape.
When the ring is released, it will reseat.
PILOT VALVE: When the toggle is in the upright position, all air from the air compressor
is vented through the discharge muffler. This gives an easy start feature. For normal
operation, the toggle is in the 90° position.
AIR INTAKE FILTER: This filter is designed to clean air coming into the pump. To
ensure the pump continually receives a clean, cool, dry air supply this filter must al-
ways be clean and ventilation opening free from obstructions. Replace filter element
when necessary.
AIR TANK PRESSURE GAUGE: The air tank pressure gauge indicates the reserve
air pressure in the air tank (s).
PRESSURE REGULATOR: The air pressure coming from the air tank is controlled by
the regulator knob. Turn the pressure regulation knob clockwise to increase discharge
pressure, and counterclockwise to decrease discharge pressure.
OUTLET PRESSURE GAUGE: The outlet pressure gauge indicates the air pressure
available at the outlet side of the regulator. This pressure is controlled by the regulator
and is always less or equal to the air tank pressure.
AIR TANK DRAIN VALVE: The drain valve is used to remove moisture from the air
tank(s) after the air compressor is shut off. NEVER attempt to open the drain valve
when more than 10 PSI of air pressure is in the air tank! To open the drain valve,
turn the knob counterclockwise.
EXPLODED VIEW & EXPLANATION OF AIR COMPRESSOR FEATURES
OIL DIPSTICK: The dipstick will register the amount of oil in the pump. Oil level should
be checked on a daily basis to ensure it does not exceed the maximum notch or fall
below the minimum notch on the dipstick. If low, add SAE 30W non-detergent oil.
OIL FILL PORT/VENT: Pour oil into the Oil Fill Port/Vent when required.
AIR COMPRESSOR PUMP: To compress air, the piston moves up and down in the
cylinder. On the down stroke, air is drawn in through the air intake valves while the
exhaust valves remain closed. On the up stroke, air is compressed, the intake valves
close and compressed air is forced out through the exhaust valves, into the discharge
line, through the pilot valve and into the air tank.