Left Tower Drying / Right Tower Regenerating: Continued
● Upon successful repressurization and pressure switch activation, the towers are switched.
Now the left tower starts to dry the compressed air.
● The right tower purge exhaust valve is opened, the right tower depressurizes, and the
regeneration of the right tower commences. The moisture laden purge air is dispensed into
the atmosphere via the purge exhaust valve and muffler. The regeneration time (it can be 2
minutes, 5 minutes or 7.5 minutes depending on the cycle time).
● At the end of the regeneration cycle, the right tower purge exhaust valve is closed and the
repressurization valve / purge adjustment valve is opened for approximately 55 seconds to
repressurize the right tower.
● Upon successful repressurization the pressure switch activation, the towers are switched.
Now the right tower starts to dry compressed air while the left tower is regenerated and the
cycle continues.
● If the optional Energy-Save module has been installed on the machine, the controller
continuously monitors dew point. If the dried compressed air is below the set dew point, the
drying continues in the same tower while the other tower is in standby mode. The dew point
standby mode always begins after the regeneration of the off line tower and re-
pressurization is complete. When the dew point starts to climb and crosses the set-point,
then the controller switches to standard cycle time and the towers switch and the drying
cycle continues in the normal mode.
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