NANO D3 - Troubleshooting Guide

26
heatless desiccant air dryer
D3
7. trouble shooting
problem problem caused solution
Poor dew-point
performance
Insufcient inlet pressure
4 barg (58psig) minimum inlet pressure required to operate, if
not, check and restore system pressure
Electrical fault
Ensure the power is on and the dryer front panel is illuminated;
check the dryer is cycling correctly
Moist or contaminated
desiccant
Eliminate the cause of contamination, replace desiccant
cartridges (do not re-use)
Excessive inlet air temprature Check against the technician specication
Insufcient purge air
Purge incorrectly adjusted, consult the service personnel to
adjust the settings (factory pre-set). Consult Service Technician
to adjust as per site condition.
Exhaust silencer blocked Replace exhaust silencer/mufer element(s).
Failure of dryer
to cycle
controller not
functioning correctly
Ensure the controller is powered up, check the on screen column
status to ensure it is powering the solenoid valves during
operation
insufcient inlet pressure
4barg (58psig) minium inlet pressure required to operate, if not,
check and restore system pressure
controller not illuminated Check power supply to the dryer, check fuse and replace.
failure to de-pressurize
when cycling
Control valve not functioning correctly; if there is power to the
coil, replace valve. Consult controller display
outlet ow stops Check inlet air supply
failure to initialize dryer
Switch off and restart dryer. Ensure dryer is pressurized before
powering up to allow the dryer to initialize before operation.
erratic air ow from exhaust Faulty or damaged valves, carry out service