fiac TDRY 6-18 Manuel D'instructions page 60

Where installed- The P
high-pressure switch has
been activated.
Where installed- The P
low-pressure switch has
been activated.
Where installed- The
T safety thermo-switch
S
has been activated.
DMC15- The first and
the last LED of the
display of electronic
instrument blink
simultaneously.
DMC15- The
yellow LED of the
electronic controller is
flashing continuously.
DMC15- The first LED of
the display of electronic
instrument is flashing
continuously.
DMC15- The last LED of
the display of electronic
instrument is flashing
continuously.
DMC14- The LED
of the instrument is on or
flashes to indicate alarm
situations.
Check which of the following has caused the activation :
A
1. The ambient temperature is too high or the room aeration is insufficient -
provide proper ventilation (Air-Cooled).
2. The condenser is dirty - clean it (Air-Cooled).
3. The condenser fan doesn't work - see specific point (Air-Cooled).
4. The cooling water is too hot - restore the nominal condition (Water-Cooled).
5. The cooling water flow is insufficient - restore the nominal condition (Water-
Cooled).
Reset the pressure-switch pressing the button on the controller itself - verify
the dryer for correct operation.
The P pressure switch is faulty - contact a refrigeration engineer to replace it.
A
There is a leak in the refrigerating fluid circuit - contact a refrigeration
B
engineer.
The pressure switch restores automatically when normal conditions are
restored - check the proper operation of the dryer.
Check which of the following has caused the activation :
1. Excessive thermal load - restore the standard operating conditions.
2. The inlet air is too hot - restore the nominal conditions.
3. The ambient temperature is too high or the room aeration is insufficient -
provide proper ventilation.
4. The condenser unit is dirty - clean it.
5. The fan doesn't work - see specific point.
6. There is a leak in the refrigerating fluid circuit - contact a refrigeration
engineer.
Reset the thermo-switch by pressing the button on the thermo-switch itself -
verify the correct operation of the dryer (also see par. 5.14).
The T thermo-switch is faulty - replace it.
S
Verify the electric wiring of (T1) DewPoint probe.
The (T1) DewPoint probe is faulty - replace it.
The DMC15 electronic controller is faulty - replace it.
Verify the electric wiring of (T2) fan control probe.
The (T2) fan control probe is faulty - replace it.
The DMC15 electronic controller is faulty - replace it.
DewPoint too low - see specific point.
The (T1) DewPoint probe is faulty - replace it.
The DMC15 electronic controller is faulty - replace it.
DewPoint too high - see specific point.
The (T1) DewPoint probe is faulty - replace it.
The DMC15 electronic controller is faulty - replace it.
The LED flashes because the DewPoint is too high – see specific
point.
The LED flashes because the DewPoint is too low - see specific point.
The LED
instrument displays the message "PF" (Probe Failure) - replace the probe.
flashes because the probe is faulty or interrupted, the
GB