John Deere AC1-8GH User Manual download pdf (Page 11)

Portable Gasoline Air Compressor Manual 11

EXPLODED VIEW & EXPLANATION OF AIR COMPRESSOR FEATURES

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 compres-

sor 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.

AIR COMPRESSOR PUMP: A two stage compressor pump uses two different size

cylinders with the intake valve of the second smaller cylinder linked to the exhaust

valve of the ﬁrst larger cylinder. On the down stroke of the large cylinder, air is drawn

through the intake valve while the exhaust valve remains closed. On the upstroke, air

is compressed, the intake valve closes and compressed air is forced out through the

exhaust valve, into the inter cooler and through the intake valve of the second smaller

cylinder on its down stroke. On the upstroke of the smaller cylinder, the intake valve

closes and the compressed air is compressed a second time and forced out the exhaust

valve into the discharge line, through the tank check valve and into the air tank.

OIL FILL PORT

OIL SIGHT GLASS

OIL FILL PORT/VENT: Pour oil into the Oil Fill Port/Vent when required.

OIL SIGHT GLASS: The Oil Sight Glass displays the oil level in the pump. The oil

level should be at the center of the Oil Sight Glass. If low, add SAE 30W non-deter

gent oil.

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John Deere AC1-8GH User Manual Page 11