BE Pressure supply 30 Gallon Diesel Compressor / Welder / Generator AC1030K5000W - Manual (Page 8)

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Every 3 months:
Change oil to ensure that the compressor has proper oil level and that
the oil in the machine does not deteriorate past factory specifications.
Inspect valve assemblies to prevent premature failure and clean out and
carbon that can form in older valves.
*Elite units clean auto tank drain strainer and check for proper function.
Inspect pressure switch for proper function.
Inspect check valve for proper function and remove any carbon
accumulation to prevent premature failure.
*Clean belt guard coolers (if equipped).
Storage of Compressor:
Before storing the compressor for a prolonged period of time, use a blow
gun to clean all debris from compressor. Shut OFF main power and turn
OFF disconnect. Drain tank pressure, clean air filter, drain old oil and
replace with new oil. Cover the unit to prevent dust and moisture from
collecting on the unit.
storage