Makita MAC3001 Manuel D'instructions page 12

PROBLEM
Compressor
Overheats
Compressor
loads and
unloads or
stops and starts
excessively
Water in
crankcase, oil
breaking up, oil
gets dirty, rusty
valves or
cylinder(s)
12
TROUBLESHOOTING GUIDE
POSSIBLE CAUSE
Clogged inlet filter
Dirty compressor, head,
cylinder, intercooler
Operating pressure too high
Low oil or wrong oil being used
Compressor cycle too long,
proper cycle is 50 to 60% on
Stop/Start operation and 75 to
80% on continuous run
operation
Leaks in air system
Worn or loose drive belts
Pilot valve or pressure switch
differential adjustment too close
Defective compressor valves
Compressor too small for
intended use
Cycle too short; compressor
does not operate long enough
to vaporize condensed moisture
during compression
Compressor operating outside
in cold conditions or inlet filter
not protected against weather
System pressure leaking back
through check valve when
compressor is stopped
Wrong oil being used
CORRECTIVE
ACTION
Clean or replace as
necessary
Clean with
compressed air
Reduce operating
pressure
Drain and replace oil
Allow for longer rest
between cycles
Replace worn
components as
necessary
Tighten V-belts or
replace
Make necessary
adjustments
Replace valves
Allow for a longer
operating cycle
Provide adequate
protection against
extreme weather
conditions
Check and replace
check valve if
necessary
Drain and replace
with proper oil