User`s guide

PUREGAS, LLC P550W Series Air Dryers User’s Guide
Page 90 of 99 P011658 – Rev. M
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