Altec AIR
P8400W Air-dryer User’s Guide
Page 99 of 110
P017585 – Rev. A
13.11 High Humidity
Possible Cause
Check
Corrective Action
Low System Pressure
Verify System Pressure
(section 8.12 )
Adjust System Pressure
to 50 PSI (section 8.12 )
Low Flow Rate
Verify Flow Rate
(
FLOW
) reading is low
(section 8.4.4.1 )
Increase flow by
creating an artificial leak
outside of the air-dryer
High Humidity Alarm
set point too low
Verify High Humidity
Alarm set point
(section 9.13)
If Flow Rate is low,
allowing a higher alarm
set point (up to 10%)
will allow dryer to run
within acceptable levels.
Raise High Humidity
Alarm set point
(section 9.13)
Over 10% not
recommended
Heatless Dryer not
cycling between towers
Verify consistent
Heatless Dryer cycling
(section 9.6 )
Troubleshoot
Inconsistent Heatless
Dryer Cycling condition
(section 13.20 )
Defective Control Board Unplug Humitter from
Control Board
(see section 11.1 for
Control Board location)
Humidity reading should
drop to 0%
If Humidity did not drop
to 0%, replace Control
Board (section 11.1 )
Defective Humitter
Turn Dryer
OFF
.
Remove and unplug
Humitters (section
9.13.4 & 9.13.5 )
Swap humitters between
System 1 and System 2
to see if Humidity
condition follows.
If condition followed
humitter, replace
humitter (section 11.3 )
CAUTION!
Do not test the Humitter with an ohm meter or apply any DC
voltage.
This will render the humitter defective.
Summary of Contents for Altec AIR P8400W
Page 1: ...P017585 Rev A P8400W Air dryer User s Guide...
Page 2: ......
