PUREGAS, LLC
P550W2 Series Air Dryers User’s Guide
Page 90 of 99
P012226 – Rev. F
13.13 Inconsistent Heatless Dryer Cycling
Possible Cause
Check
Corrective Action
Defective Solenoid
Valve
Measure voltage going
to the Heatless Dryer
Solenoid Valves
(section 9.8 )
If 53 VDC
IS
present,
replace Solenoid Valves
included in the 8,000
Hour Maintenance Kit
(section 11.4 )
Defective Cycle Timer
Measure voltage going
to the Heatless Dryer
Solenoid Valves
(section 9.8 )
If 53 VDC
IS NOT
present, replace the
Cycle Timer
(section 11.3 )
13.14
Compressor Doesn’t Operate
Possible Cause
Check
Corrective Action
Defective compressor
Measure compressor
voltage
(section 9.3 )
If voltage is good,
replace compressor
(section 11.2 )
or send it in for repair
(section 12. )
Defective control board
Measure compressor
voltage
(section 9.3 )
If measurements are
incorrect, replace
control board (section
11.1 )
System is in Shutdown
state
On the Display Panel,
verify that the system is
in
SHUTDOWN
state
Press the
RESET
Button
Summary of Contents for P550W2 Series
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