ATS HGL 120, Инструкция по эксплуатации и техническому обслуживанию

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6.2 TROUBLESHOOTING
Troubleshooting and eventual control and/or maintenance operations
must be performed by qualified personnel.
PROBLEM PROBABLE CAUSE CORRECTIVE ACTION
Dryer fails to pressurize Faulty purge valve Check purge valve
Check timer sequencing
Dryer fails to purge Purge valve does not open Check solenoid valve.
Repair and replace it if
necessary
Purge muffler is clogged Refer to muffler replacement
procedure
Dryer depressurizes too
rapidly Purge valve does not close Check solenoid valve.
Repair and replace it if
necessary
The pressure in
regenerating tower is high
(above 1 bar) Muffler is clogged Refer to muffler replacement
procedure
Outlet check valve stays
open Clean and/or replace
The dryer fails to shift
towers from drying to
regenerating service There is no input power Check output voltage to
solenoid valve
Solenoid valve is faulty Check input voltage to
solenoid valve
Timing on dryer is off Check controller
There is an excessive
pressure drop in the dryer Excessive flow rate Check flow rate
Inlet pressure under design
condition Check pressure source
Dew point is high Inlet temperature above
design condition Check aftercooler or check
compressor
Water entering desiccant
bed Check air/moisture
separator and prefilter and
replace desiccant if
necessary
Desiccant contaminated by
oil Install suitable prefilter and
replace desiccant if
necessary
Insufficient purge rate Check muffler