Altec AIR
P8400W Air-dryer User’s Guide
Page 101 of 110
P017585 – Rev. A
13.14 Compressor Won’t Build Pressure
Possible Cause
Check
Corrective Action
Low System Pressure
Verify System Pressure
(section 8.12 )
Adjust System Pressure
to 50 PSI (section 8.12 )
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 9.16 )
Connect, tighten, or
replace leaking
component
13.15 Compressor Excessive AMP Draw
Possible Cause
Check
Corrective Action
Restriction in air line
Remove Discharge Hose
from compressor (see
section 11.4 for location
of hose)
Re-measure Compressor
AMP Draw
(section 9.2 )
If measurement is below
4.0 amps, trace hoses
from compressor to
Unloader Valve looking
for restrictions or kinks
Compressor failing
Remove Discharge Hose
from compressor (see
section 11.4 for location
of hose)
Re-measure Compressor
AMP Draw
(section 9.2 )
If measurement is still
above 4.0 amps, replace
compressor
(section 11.4 )
or send it in for repair
(section 12. )
Summary of Contents for Altec AIR P8400W
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