Maintenance - Hyundai HC20V4A-A Original Instructions Manual

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Turn the knob of safety valve counterclockwise for 3-5 circles to release air for three to five seconds to
allow pressurized air to escape. Then turn it clockwise tightly. The safety valve must hold pressure
before all compressed air is exhausted from the tank/pressure vessel.
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Pull the ring on the safety valve to release air for three to five seconds to allow pressurized air to escape.
Release the ring. The safety release valve must reset and hold pressure before all compressed air is
exhausted from the tank/pressure vessel.
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Any continued loss of air after performing the above steps indicates a problem with the safety valve.
Discontinue use and seek service before continued use of the air compressor.
WARNING! If air leaks after the ring has been released or if the valve is stuck and cannot be
actuated by the ring, do not use the air compressor until the safety valve has been replaced. Use of the air
compressor in this condition could be result in serious personal injury.

7. MAINTENANCE

GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various
types of commercial solvents and maybe damaged by their use.
Use clean cloth to remove dirt, dust, oil, grease, etc.
WARNING!
Remove the battery from the tool for any inspection, maintenance, and cleaning.
REPLACING THE AIR FILTER

Grasp the tabs on the air filter cover and pull away from the housing.
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Remove the air filter.

Install new air filter.
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Replace the air filter cover by pushing it into the housing until it clicks into place.
STORING THE AIR COMPRESSOR
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Place the ON/OFF switch in the off position.
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Remove battery packs.

Disconnect air hose and air tool from the compressor.

Drain air tanks according to instructions.
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Thoroughly clean air compressor and any accessories.
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