Dryer Manual
AIR DRYER INSTRUCTION MANUAL
17
TROUBLESHOOTING
Problem Possible Cause Re
p
air Comments
High pressure drop Excessive compressed
air flow or too low air
inlet pressure.
Check actual pressure and
flow through the dryer.
Install larger dryer, if
needed
This dryer is designed for a
maximum air flow. If too much
air is pumped into the dryer,
water removal capacity may
not be sufficient, resulting in
water carry-over downstream.
Check the rated flow of the
air compressor.
Freeze up
Compressor room ambient is
above 41°F (5°C).
Frosting of the lines indicates
the controls are set too low.
The following should be done
by an experienced
refrigeration technician:
Controls may be adjusted in
the field by means of the hot
gas bypass valve.
Fan switch failed in closed
position keeping fan on.
Check status of Dew Point
Gauge:
Units with PLC, check status
of Dew Point on display :
Clogged heat exchanger
Heat exchanger needs
cleaned and flushed
Dryers are to be used with
compressed air free of any
aggressive contaminants.
Installing a coalescing filter
on the inlet side is required for
warranty and service.
Changed a clogged filter, or
contact a qualified,
refrigeration specialist
Pipeline too small
diameter;
Pipeline too long;
Too many elbows
Check piping and make
adjustments as necessary
Inlet/Outlet valve not
opened completely
Make sure valve is opened
completely
Pipeline leak
Do a leak test and repair leak
DEWPOINT.37°F
READY