Radio Frequency Systems
BD550W Series Air Dryers User’s Guide
Page 97 of 104
100518833 – Rev. B
If either side is
continuously flowing
high amounts of air, the
Solenoid Valve is
defective.
Maintenance Kit
(section 11.6 )
Defective control board Measure voltages at
control board
(section 9.3 )
If measurements are
incorrect, replace
control board (section
11.1 )
13.20 Can’t Create a High Compressor Last Run Time Alarm
Possible Cause
Check
Corrective Action
High Compressor Last
Run Time Alarm set
point higher that the
default of 3:00 minutes
Verify High
Compressor Last Run
Time Alarm set point
Allow the compressor
to run longer than the
verified set point
(section 9.10 )
Defective Control
Board
Verify that the
compressor has run
longer than the verified
High Compressor Last
Run Time Alarm set
point (above)
Replace Control Board
(section 11.1 ) if the
compressor runs longer
than the verified High
Compressor Last Run
Time Alarm set point
by 1 minute or more
and fails to create an
alarm.
13.21 Compressor Rapid ON/OFF Cycling
Possible Cause
Check
Corrective Action
Defective control board Measure voltages at
control board
(section 9.3 )
If measurements are
incorrect, replace
control board (section
11.1 )
Summary of Contents for BD550W Series
Page 2: ......
