PUREGAS, LLC
P550W2 Series Air Dryers User’s Guide
Page 87 of 99
P012226 – Rev. F
13.7 Low Outlet Pressure Alarm
Possible Cause
Check
Corrective Action
Outlet Pressure set too
low
Verify Outlet Pressure
(
OUTP
) reading
(section 8.5.5.1 )
Adjust Outlet Pressure
Regulator (section 8.11 )
High Flow condition
Verify Flow Rate
(
FLOW
) reading is not
higher than expected
(section 8.5.5.2 )
Troubleshoot High Flow
condition
(section 13.11 )
Low Outlet Pressure
Alarm set point too high
Verify Low Outlet
Pressure Alarm set point
(section 8.7.3 )
Lower the Low Outlet
Pressure Alarm set point
(section 8.7.3 )
Leak in the air system
With no outlet flow, test
fittings and hoses for
leaks (section 9.15 )
Tighten any loose
connections as required
13.8
Can’t Create a Low Pressure Alarm
Possible Cause
Check
Corrective Action
Defective Outlet
Pressure Regulator
Verify that the Outlet
Pressure Regulator can
be adjusted
(section 8.11 )
Replace Outlet Pressure
Regulator if unable to
adjust pressure
(section 11.2 )
Low Outlet Pressure
Alarm set point lower
than default setting
Verify Low Outlet
Pressure Alarm set point
Adjust Outlet Pressure
Regulator so that Outlet
Pressure (
OUTP
)
reading drops below
verified set point
(section 9.14 )
Defective Control Board Verify that the Outlet
Pressure (
OUTP
)
reading is lower than the
Low Outlet Pressure
Alarm set point (above)
Replace Control Board
(section 11.1 ) if Outlet
Pressure (
OUTP
)
reading is under verified
Low Outlet Pressure
Alarm set point for more
than 1 minute and fails
to create an alarm.
Summary of Contents for P550W2 Series
Page 2: ......
