RFS BD4200W Series, User Manual

Page: 105 / 114

Radio Frequency Systems BD4200W Series Air Dryer User’s Guide
Page 105 of 114 100518835 - Rev. B
13.13 Inconsistent Heatless Dryer Cycling
Possible Cause Check Corrective Action
Defective Solenoid
Valve Measure voltage going
to the Heatless Dryer
Solenoid Valves
(section 9.9 ) If correct VDC IS
present, replace
Solenoid Valves
included in the 8,000
Hour Maintenance Kit
(section 11.6 )
Defective Cycle Timer Measure voltage going
to the Heatless Dryer
Solenoid Valves
(section 9.9 ) If correct VDC IS NOT
present, replace the
Cycle Timer
(section 11.4 )
13.14 Compressor Doesn’t Operate
Possible Cause Check Corrective Action
Defective Compressor Measure voltage to
Compressor
(section 9.3 ) If voltage is good,
replace Compressor
(section 11.5 )
or send it in for repair
(section 12. )
No power to
Compressor Measure voltage to
Compressor
(section 9.3 ) If voltage is not present
or fluctuates, continue
to next Possible Cause
Defective Solid State
Relay Measure voltages at
Solid State Relay
(section 9.6 ) If measurements are
bad, replace Solid State
Relay (section 11.1 )
System is in
SHUTDOWN state
On the Display Panel,
verify that the system is
in
SHUTDOWN state
Press the RESET
Button
13.15 Compressor Won’t Build Pressure
Possible Cause Check Corrective Action
Low System Pressure Verify System Pressure
(section 8.14 ) Adjust System Pressure
to 50 PSI/345
KPa(section 8.14 )
Defective Unloader
Valve Test Unloader Valve
operation (section 9.8 ) Replace Unloader
Valve
(section 11.4 )
Leak in air system Check all hoses and
fittings between
Compressor and Air
Tank for air leaks
(section 9.17 ) Connect, tighten, or
replace leaking
component