PUREGAS, LLC
P550W2 Series Air Dryers User’s Guide
Page 91 of 99
P012226 – Rev. F
13.15 Compr
essor Won’t Build Pressure
Possible Cause
Check
Corrective Action
Low System Pressure
Verify System Pressure
(section 8.9 )
Adjust System Pressure
(section 8.9 )
Defective Unloader
Valve
Test Unloader Valve
operation (section 9.7 )
If this is continuously
flowing high amounts of
air, the Unloader Valve
is defective.
Replace Unloader Valve
(section 11.3 )
Leak in air system
Check all hoses and
fittings between
compressor and Air
Tank for air leaks
(section 9.15 )
Connect, tighten, or
replace leaking
component
13.16 Compressor Excessive AMP Draw
Possible Cause
Check
Corrective Action
Restriction in air line
Remove Discharge Hose
from compressor (hose
to the heatless Dryer)
Re-measure Compressor
AMP Draw
(section 9.2 )
If measurement is below
the recommended amps,
trace hoses from
compressor to Unloader
Valve looking for
restrictions or kinks
Compressor failing
Remove Discharge Hose
from compressor (hose
to the heatless Dryer)
Re-measure Compressor
AMP Draw
(section 9.2 )
If measurement is still
above the recommended
amps, replace the
compressor
(section 11.2 )
or send it in for repair
(section 12. )
Summary of Contents for P550W2 Series
Page 2: ......
