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Before inspecting the pressure relief valve, release air pressure, lockout and tagout the
power supply to the compressor package. Failure to release pressure or properly
disconnect the power may result in personal injury or death.
Never paint, lubricate or alter a relief valve. Do not plug vent or restrict.
Operation of the unit with improper relief valve setting can result in severe personal
injury or machine damage. Ensure properly set valves are installed and maintained.
Pressure Relief Valve Check During Operation – The pressure relief valve has no user-serviceable or
repairable components. However, it should be tested for proper operation at least once every year. To
test the pressure relief valve:
Raise the system operating pressure to its normal level.
Manually open the valve by lifting the hand lever.
Hold the valve open for a few seconds and allow it to snap shut.
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