fiac TDRY 6-18 Manuel D'instructions page 57

Instead of the usual drain system (a solenoid valve controlled by means of electronic instrument), an electronic
level controlled drain can be installed as option. This drain consists of a condensate accumulator where a
capacitive sensor continuously checks the level of the liquid: as soon as the accumulator is filled, the sensor
passes a signal to the electronic control and a diaphragm solenoid valve will open to discharge the condensate.
For a complete condensate discharge the valve opening time will be adjusted exactly for each single drain
operation to avoid wasting air. No Y-shaped strainer is installed and no adjusting is required. A service valve is
installed before the electronic drain in order to make check and maintenance operation easy.
AT DRYER START-UP VERIFY THAT THIS VALVE IS OPEN.
CONTROL PANEL FOR DRYERS TDRY 6-32
CONTROL PANEL FOR DRYERS TDRY 12-18 SILVER - TDRY 49-105
CONTROL PANEL FOR DRYERS TDRY 143-168
TROUBLESHOOTING
The troubleshooting and resultant service work should be carried out by qualified personnel.
Before any intervention, ensure that:
• no part of the machine is powered and that it cannot be connected to the mains
• no part of the machine is under pressure and that it cannot be connected to the
SYMPTOM
No led lighting up.
Pressing of Test button,
but no condensate
discharge.
Condensate discharge
only when Test button is
pressed.
Drain keeps blowing off
air.
Drain in alarm condition.
NOTE : When the drain is in alarm condition, the diaphragm solenoid valve will open 7.5 sec every 4 min.
5.17 ELECTRONIC LEVEL DRAIN
The control panel here illustrated allows checking of drain working.
Power : LED - drain ready to work / supplied
Test : button - discharge test (keep pushed for 2 seconds)
The control panel here illustrated allows checking of drain working.
Power : LED ON - drain ready to work / supplied
Valve : SLOW BLINKING LED - membrane solenoid valve open / discharging
Alarm : FAST BLINKING LED - drain in alarm condition
Test : button - discharge test (keep pushed for 2 seconds)
The control panel here illustrated allows checking of drain working.
Power : LED ON - drain ready to work / supplied
Valve : LED ON - membrane solenoid valve open / discharging
Alarm : LED ON - drain in alarm condition
Test : button - discharge test (keep pushed for 2 seconds)
supply.
compressed air system.
Verify that the system is powered.
Verify the electric wiring (internal and/or external).
Check internal printed circuit board for possible damage.
The service valve located before the drain is closed - open it.
The dryer is not under pressure - restore nominal condition.
Solenoid valve defective - replace the drain.
The internal printed circuit board is damaged - replace the drain.
The capacitive sensor is too dirty - open the drain and clean the sensor plastic tube.
The diaphragm valve is dirty - open the drain and clean it.
The capacitive sensor is too dirty - open the drain and clean the sensor plastic tube.
The capacitive sensor is too dirty - open the drain and clean the sensor plastic tube.
The service valve located before the drain is closed - open it.
The dryer is not under pressure - restore nominal condition.
Solenoid valve defective - replace the drain.
POSSIBLE CAUSE - SUGGESTED ACTION
GB