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5.3 Parameters
Accessing parameters
z
é
Press
and at the same time
: the keypad now operates in
Parameters MENU mode and the parameters can be scrolled with
é
and
.
List of parameters
A1
Sets the unit of measure for dew point in °C or °F.
A2/A3
Total
hours
of
dryer
operation
(display only).
A4/A5
Like A2/A3 but for hours of refrigeration compressor opera-
tion.
A6
Sets Hd Warning intervention temperature (see par. 5.4 in
List of alarm/warnings).
A7
Inhibits remote OFF command.
b1
Sets the dryer address for serial communications.
b2
Sets the serial communication speed.
b3
Not available
b5
Refrigerant evaporation temperature.
b7
Not available
b8
Compressor discharge (delivery) temperature.
b9
Not available
b11
Auxiliary refrigerant evaporation temperature.
C5
Dryer model:
Mon = models PST120-350
MuL = models PST460-1800
Note: if the C5 is set to = MuL in a monocooler dryer then
the warning ASE will occur. ASE is a warning for the multi-
cooler models..
C7
Sets compressor operation mode:
- CYC = CYCLING (energy saving enabled)..
- Con = CONTINUOUS (energy saving disabled)..
C36
Operating logic of the alarm/machine status relay.
0 = relay energised when dryer is running, de-energised if
in warning/alarm status.
1 = relay de-energised when dryer is running, energised if
in warning/alarm status.ù
2 = relay de-energised when dryer is not running,
energised when running.
C37
% energy saving.
d1
Sets the seconds of condensate drain opening (if set in
TIMED mode).
d2
Like d1, but for seconds closed.
d3
ISets condensate drain operation mode:
- CAP = INTEGRATED
- tIM = TIMED
z
- Con = EXTERNAL (24VAC)
Changing parameters
After displaying the parameter, press
x
, then press
to confi rm.
y
Press
to return to STANDARD mode.
=
A3x1000+A2
5.4 Alarms and Warnings
Alarms cause the dryer to switch off.
Warnings only cause a signal.
In the case of Alarm or Dew Point Sensor Warning (dSE),
the alarm code. In the case of a Warning,
the fault code and the dew point and WARNING LED comes on.
If an alarm occurs:
a) Identify and eliminate the cause;
z
b) press
to reset the alarm;
x
c) press
to restart the dryer.
If a warning without automatic reset occurs:
a) identify and eliminate the cause
z
b) press
to reset the warning.
PST 460-1800
x
z
é
, change with
and
[
[
displays
alternatively displays
List of alarms/warnings
HP
High Pressure Alarm
Phases monitor Alarm (PST460-1800 )
CP
Compressor Thermal Protection ( PST900-1800 )
LP
Low Pressure Alarm
,
Ld
Low Dew Point Alarm
Lt
Low Evaporation Temperature Alarm
Ht
High Compressor Discharge Temperature Alarm = T> 120°C.
LtA
Alarm low auxiliary evaporation temperature.
Refrigerant Temperature Sensor Warning
rSE
Switches to CONTINUOUS mode.
Condensate Drain Warning
drE
Condensate drainage switches to TIMED mode.
Dew Point Sensor Warning
dSE
The measured temperature must return within its normal range.
High Dew Point Warning
Hd
Automatic reset when the dew point = A6 - 4°F (2°C).
HSE
Discharge temperature sensor Warning
Scheduled Maintenance Warning
Sr
See par. 5.2 and 6.3
4/6
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