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PST 120-350
c) Press
x
: the POWER LED (2) turns yellow again;
d) Turn the MAIN SWITCH “
&
” to “O OFF” to switch the power off.
Y Wc version, close the water circuit with the dryer stopped.
5 Control
5.1 Control panel
4
5
2
1
3
y
xé
z
è
[
&
Display
Reference Name Description
1 MAIN SWITCH
I ON = dryer powered;
O OFF = dryer not powered.
2 POWER LED
Yellow = dryer powered.
Green = dryer operating.
3
ENERGY SAVING
LED
Lit = dryer in energy saving con-
dition.
4 WARNING LED
Off = no signal.
Flashing = alarm or warning.
5 DRAIN LED Lit = drain open.
Keypad mode STANDARD MENU*
x
ON/OFF BUTTON
Switching on/off Con rm
z
RESET BUTTON
Reset alarm/ warning Up
é
HISTORY BUTTON
Alarm/warning log Down
y
DRAIN BUTTON
Condensate drain Out
* returns to STANDARD mode after 5 minutes.
5.2 Operation
Operation status
With the MAIN SWITCH “
&
” turned to “I ON” (dryer powered)
three working conditions are possible::
DRYER
STATUS
[
DISPLAY
POWER LED
(2)
1 OFF Off Yellow
2 ON Dew point Green
3 REMOTE OFF r.OF Yellow
To switch from OFF to ON (and vice versa) press
x
.
! In OFF status the unit remains powered until the MAIN SWITCH“
&
” is turned to “O OFF”!
Y To manage REMOTE OFF mode, remove the bridge between ter-
minals X4.0 and X4.10 (see par. 8.8) and connect the remote start/stop
switch (to be provided for by the customer).
In ON status, use the button with the following logic:
X4.0 X4.10 X4.0 X4.10
DRYER STATUS ON REMOTE OFF
! Do not activate ON status (refrigeration compressor operating) more
than 10 times in one hour.
Energy saving function
è
In ON mode, operating conditions permitting, the dryer reduces energy
consumption by temporarily switching off the refrigeration compressor;
the ENERGY SAVING LED (3) comes on (see Control Panel).
Scheduled maintenance
Y When the DISPLAY
[
alternatively shows the Sr warning code
and dew point, contact authorized assistance personnel for carrying out
scheduled maintenance indicated in par. 6.3 and for resetting the warn-
ing code (see par. 5.4 in List of alarm/warnings).
Press
z
to cancel the warning for 24 hours.
Condensate drain
There are three operation modes:
a) INTEGRATED - draining controlled by the level sensor;
b) TIMED - check that the automatic condensate drainage system is
working properly.
Use manual drainage to check that condensate is not retained as this
is symptomatic of poor drainage.
This check of the timed drain opening (parameter d1).
Settings depends upon the operating conditions of the dryer and var-
ies the amount of condensate to be removed.
For standard dryer operating conditions, see the following table of
recommended settings:
Model Parameter d1
PST120-350 5
Parameter d1: time open in seconds for every 2 minutes of opera-
tion.
c) EXTERNAL - if there is an external drain.
To change operation mode, use the parameter d3 (see par. 5.3 in List
of parameters).
Y Only set the EXTERNAL mode in absence of the solenoid valve.
Otherwise the relative coil could become damaged.
Alarm log
Contains the descriptions of the last alarms (max. 8).
Press
é
for 5 seconds: the keypad now operates in Alarm
MENU mode and the events can be scrolled with
z
and
é
.
Every event is displayed with “ALx” (x=1-8).
AL1 = most recent event.
If there are no events “---” appears.
To view the details of the event, press
x
:
ALx
1 Alarm code
2 Thousands of hours
3 Hours
4 Dew point
5 Evaporation temperature
6 Compressor discharge temperature
Scroll with
z
and
é
.
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