ALTEC AIR, LLC
P1500W Series Air Dryers User’s Guide
Page 90 of 101
P011787 – Rev. R
within acceptable levels.
Defective Humidity
Sensor
Perform the Testing
Humidity Alarm and
System Shutdown test
(section 9.13 )
Troubleshoot
Can’t
Create a High Humidity
Alarm / Shutdown
condition
(section 13.10 )
Heatless Dryer not
cycling between towers
Verify consistent
Heatless Dryer cycling
(section 9.6 )
Troubleshoot
Inconsistent Heatless
Dryer Cycling
condition
(section 13.13 )
Defective Control Board Unplug Humidity
Sensor from Control
Board (see section 11.1
for Board location)
Humidity reading should
drop to 0%
If Humidity did not drop
to 0%, replace Control
Board (section 11.2 )
13.10 Can’t Create a High Humidity Alarm / Shutdown
These troubleshooting steps assume that the Humidity Element is removed from
the Humidity Block during the
Testing Humidity Alarm and System Shutdown
(section 9.13 ) procedures.
Possible Cause
Check
Corrective Action
Humidity Sensor Cable
disconnected
Verify that Humidity
Sensor cable is
connected to the Control
Board
Connect Humidity
Sensor cable
Defective Humidity
Sensor
Verify that Humidity
reading fails to climb
higher than 15% or
creates sporadic
readings
Replace Humidity
Sensor (section 11.1 )
Defective Control Board Verify that Humidity
reading is over 15% for
more than 1 minute
Replace Control Board
if no alarm is created
and system does not shut
down (section 11.2 )
13.11 High Flow Rate Alarm
Possible Cause
Check
Corrective Action
Air leak in downstream
cable outside of dryer
Verify Flow Rate
(
FLOW
) reading is not
higher than expected
(section
Error!
Fix downstream
problem
Summary of Contents for PUREGAS P1500W Series
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