Altec AIR
P8400W Air-dryer User’s Guide
Page 71 of 110
P017585 – Rev. A
9.7 Testing Unloader Valve
With the System* Compressor running
(
System* = System 1 or System 2)
:
9.7.1
Remove Front Panel (see section 8.10.2 )
9.7.2
Disconnect the unloader tube
from the System* Unloader
Valve.
9.7.3
Place your hand beneath the
Unloader Valve fitting to feel
for air flow.
Air should
NOT
flow from
this fitting continuously. Air
should only be released in a
short burst when the System* compressor shuts off.
9.7.4
Re-connect the unloader tube
to the Unloader Valve.
9.7.5
Reinstall Front Panel.
If air flows from this valve continuously the Unloader Valve is defective and
should be replaced. See sections 11.3 for part detail and 11.7 for ordering
information.
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