Condensate collects in the drain valve and the level slowly rises which is detected by the sensor. When the condensate reaches upper level the controller signals the valve to open. The condensate now drains. When the condensate level reaches low level the controller switches off valve and stops the draining.
The controller routinely checks for health of the system and can detect probe or valve failure and take action. There are 3 LED displays which indicate all these. There is also Test/ Manual override button. The condensate level sensor is of capacitance type. This makes it work on all types of condensates e.g. water, water+oil, water+oil+dust etc.
If the condensate is not discharged due to valve failure then the condensate level will not reach lower limit. The controller energises the solenoid coil for 8 secs. and waits for 2 mins. It repeats the timed cycle of 8 secs. ON and 2 mins. OFF, 4 times. If condensate level does not reach the low limit then the controller activates the alarm mode and alarm mode LED glows. In the alarm mode the controller works on a timed cycle. The controller automatically reverts to normal mode when the problem clears.
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