NANO D2 Series - Troubleshooting

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18. TROUBLESHOOTING
REFERENCE TO KNOWN ISSUE
Opening the inlet valve too quickly
Valve should be opened slowly allowing the pressure to build up gradually.
Inlet/outlet head pipe
Diameter too small.
Pipe work unsupported.
Inlet pipe work from low point in system, allowing bulk water to collect and enter the dryer.
Electrical controller
Incorrect fuse ed or fuse blown. Check the plug and fuse located on top of the controller back plate inside the dryer
front cover.
Addional Items
Use of non-authorised components.
Untrained / unauthorised maintenance / installaon personnel used.
Increase in air consumpon without relaon to the ow capacity of the dryer.
Purging the dryer with cleaning agents that could damage the components or the desiccant.
Covers removed or loose during operaon.
Failure to carry out a service when indicated by the dryer.
Do not allow the dryer to ow air unless powered up, switched on and cycling. Resulng eect could be
cartridge contaminaon; requiring replacement cartridges.
Problem Problem Cause Soluon
Poor dew point
performance
1. Insucient inlet pressure 1. Inlet pressure min 4 barg. If not adjust inlet pressure
sengs.
2. Electrical Fault 2. Ensure the power is on and the dryer front panel is
illuminated; check the dryer is cycling correctly.
3. Moist or contaminated desiccant 3. Eliminate the cause of contaminaon. Replace cartridges
– do not re-use.
4. Too high air consumpon 4. Ensure the performance of the dryer matches the re-
quired system air consumpon.
5. Excessive inlet air temperature 5. Check against technical specicaon.
6. Insucient purge air 6. Purge incorrectly adjusted. Consult service personnel to
adjust sengs (Factory pre-set).
7. Exhaust silencer blocked 7. Consult service personnel.
Failure of dryer to cycle
8. Controller not funconing correctly 8. Ensure the controller is powered; check the on screen
column status to ensure it is powering the solenoid valves
during normal cyclic operaon.
9. Controller not illuminated 9. Check power to unit & fuse: T2A 250V (located at Fig
8.A).
10. Insucient inlet pressure 10. Inlet pressure = min 4 barg. If not adjust inlet pressure
sengs.
11. Failure to de-pressurise when cycling 11. Solenoid valve not funconing correctly; if there is
power to the coil, replace valve. A correctly working valve
outputs an audible click when it energises.
12. Outlet ow stops 12. Check inlet air supply.
Constant
depressurisaon
13. Failure to inialise dryer 13. Switch o and restart dryer. Ensure dryer is pressurised
before powering dryer to allow dryer to inialise before
commencing operaon.
14. Errac air ow from exhaust 14. Faulty or damaged valve; service required.