nano
pg. 19
Troubleshooting
The following section briefly discusses the various faults that can occur in the
dryer, the reason of the fault and how it can be rectified. If you do not find
the solution to your problem, contact your nano representative or the
factory. All necessary safety and precautionary steps must be followed before
attempting to perform any of the recommended measures to resolve any
faults in the air dryer.
Before any attempt is made to undertake any action, the machine must be
shut down. Follow the shut down procedures.
1.
Depressurize the unit
2.
Check to make sure if the unit has been damaged externally or if any
part is missing.
3.
Check if there is proper power supply and if it corresponds to that
mentioned on the data plate.
4.
Check to see if there is power at all the electrical connections in the
machine and if it’s the required amount
.
5.
Check if control air is available for all pneumatically operated
components.
6.
Make sure all shut-off valves are in the correct position.
7.
Check the air flow, inlet temperature and pressure and make sure it
falls within the operating range.
Problem/Reaction
of the Unit
Possible Cause
Measure to be taken
High dew point
High inlet air flow.
Reduce inlet air flow.
Inlet air temperature
above design spec.
Reduce inlet air
temperature to design
spec.
Poor pre-filtration.
Check pre-filter element.
Inlet air pressure
below design spec.
Increase pressure to the
dryer.
Desiccant
contaminated.
Replace desiccant.
Purge flow shut off or
not properly adjusted.
Set purge flow to correct
setting using purge
adjustment valve.
Back pressure in
regenerating
chambers.
Mufflers are clogged,
install new mufflers.
Re-pressurization valve
not closing or leaking.
Clean and re-pack valve.
Summary of Contents for NBP Series
Page 11: ...nano pg 11...
Page 24: ...pg 24...