Conair W Series User Manual page 107

Pa s s i v e A l a r m s
If the amber Acknowledge Alarm LED is blinking, the alarm is a passive alarm.
The dryer continues to operate, but this problem could prevent correct drying of
your material. Note that when the Acknowledge Alarm button is pressed once, the
blinking amber LED becomes solid.
i
Problem
Dewpoint Deviation High -
Displayed when the actual
dewpoint goes above the set-
point by a specified amount of
time and degrees. Defaults are
set for 5°F {3°C} for 30
seconds.
Dewpoint Deviation Low -
Displayed when the actual
dewpoint goes below the set-
point by a specified amount of
time and degrees. Defaults are
set for 5°F {3°C} for 30
seconds.
NOTE: Passive alarms can be configured as shutdown alarms (see the previous Shutdown Alarms
section). See page 4-25, screen 62 for instructions.
Possible cause
The hose or wiring connections to the
sensor block are loose or have fallen
off.
Poor regeneration air flow.
The desiccant wheel is not turning.
The desiccant wheel may be contami-
nated.
Leaks in the process air stream.
The dewpoint can not control to the
desired setpoint.
The dewpoint sensor has failed.
Solution
Check wiring and hose connections to the
sensor, resecure if needed.
Remove the air flow restrictions, dirty
filters, etc.
See Troubleshooting section entitled,
Passive alarms, Wheel rotation failure.
Check the desiccant for contamination,
replace if needed. Install
plasticizer/volatile trap for severe
situations.
Replace the desiccant wheel. See
Troubleshooting section entitled, Replacing
the desiccant wheel.
Check for worn or loose hoses.
Material and/or ambient conditions may be
too dry to increase the actual dewpoint.
Please wait several hours to determine if
the setpoint can be reached. Increase the
dewpoint low deviation value.
Replace the dewpoint sensor.
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