5 Troubleshooting
5 - 2
Problem
Probable Causes
Remedy
Supply voltage is not in the
following range:
Set the voltage to a proper value by installing a
transformer or review the electrical wiring.
Evaporation
thermometer
indicates higher
than green zone.
Overload relay for the
compressor is activated
It is not possible to restart the air dryer within 3
minutes after shutdown. Wait for 3 minutes before
restarting.
Installation place is poorly
ventilated. Ambient temperature
is too high.
Improve the ventilation system to lower the ambient
temperature.
The ventilation grilles are
obstructed by wall or clogged
with dust.
Install the air dryer more than 2feet (0.6m) away from
the wall.
Clean the ventilation grilles once a month.
Evaporation
thermometer
indicates higher
than green zone
without warm air
exhausted from
the ventilation grille. Temperature of the compressed
air is too high.
Improve the ventilation system around air or make
ambient temperature low.
Reduce the temperature of the compressed air by
installing an additional aftercooler before the air dryer.
Bypass valve of air dryer is not
fully closed.
Close the valve completely.
Drain is not discharged from
auto drain properly.
Check if the drainpipe has fluid trap or bent.
Check auto drain.
Check auto drain strainer.
Moisture occurs
downstream of the
compressed air
lines.
Moisture from separate air circuit
that is without air dryer.
Install additional air dryer on the line that does not have
one.
Separate two lines not to converge.
IN/OUT valve on the air dryer
side is not fully opened.
Open IN/OUT valve fully.
Large pressure
drop
Filter that is installed separately
in compressed air line is
clogged.
Replace the filter element.
(Follow the instruction manual of each individual
device.)
