PUREGAS, LLC
P1500W2 Series Air Dryers User’s Guide
Page 93 of 100
P012253 – Rev. H
13.17 High Duty Cycle Alarm
Possible Cause
Check
Corrective Action
Low System Pressure
Verify System Pressure
(section 8.9 )
Adjust System Pressure.
(section 8.9 )
High Flow condition
Verify Flow Rate
(
FLOW
) reading is not
higher than expected
(section 8.4.5.2 )
Troubleshoot High Flow
condition
(section 13.11 )
Defective Unloader
Valve
Test Unloader Valve
operation (section 9.7 )
If this is continuously
flowing high amounts of
air, the Unloader Valve
is defective.
Replace Unloader Valve
(section 11.2 )
Defective Heatless
Dryer Solenoid Valve
Verify consistent
Heatless Dryer cycling
(section 9.6 )
If either side is
continuously flowing
high amounts of air, the
Solenoid Valve is
defective.
Replace Solenoid
Valves included in the
8,000 Hour Maintenance
Kit (section 11.4 )
Defective Solid State
Relay
Measure AC voltages at
Solid State Relay
(section 9.5 )
If measurements are
bad, replace Solid State
Relay (section 11.1 )
Defective Control Board Measure DC voltages at
Solid State Relay
(section 9.5 )
If measurements are
incorrect, replace
Control Board (section
11.2 )
13.18
Can’t Create a High Duty Cycle Alarm
Possible Cause
Check
Corrective Action
High Duty Cycle Alarm
set point too high
Verify High Duty Cycle
Alarm set point (section
8.6.5 )
Retest the High Duty
Cycle Alarm, allowing
the Compressor to run
more often than it is off
(section 9.12 )
Defective Control Board Verify that the
Compressor has run
more than the verified
High Duty Cycle Alarm
set point (above)
Replace Control Board
(section 11.2 ) if the
Compressor runs more
than the verified High
Duty Cycle Alarm set
point and fails to create
an alarm.
Summary of Contents for P1500W2
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