User guide

nano-porous systems Ltd
17-100-0100 11
4.4 Monitoring dryer performance (Energy saving option)
• The dew-point is displayed on the control panel. When the dew-point displayed is
better than -48°C PDP the dryer will switch into ec onomy mode and stop cycling.
When the dew-point degrades to -42°C the dryer will restart cycling ensuring the
dew-point is maintained at or better than -40°C.
• If the dryer fails to achieve dew-point (falls below -30°C), the alarm output will be
indicated on the front screen. This will permit the end user to provide for example
a 4-20mA signal through this switch to a remote monitoring station elsewhere.
4.5 Shutdown procedure
• Switch off the power supply to the dryer.
• Close the inlet and outlet valves.
The dryer might still be pressurised! In order to de-pressurise the dryer; ensure
the dryer is isolated from the compressed air source:
o Cycle the dryer twice to ensure the dryer exhausts and is completely
depressurised.
o When fully depressurised the ‘clicking’ of the exhaust valves will be
heard but no air exhausted.
• When the dryer is fully depressurised, isolate from the power supply.
Figure 6: Control Panel