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b) 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).
é
Press
for 5 seconds: the keypad now operates in Alarm
MENU mode and the events can be scrolled with-
z
é
and
.
Every event is displayed with "ALx" (x=1--- 8).
AL1 = most recent event.
If there are no events "--- --- --- " appears.
x
To view the details of the event, press
ALx
1
Alarm code
2
Thousands of hours
3
Hours
4
Dew point
5
Evaporation temperature
6
Compressor discharge temperature
z
é
Scroll with
and
.
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
z
é
with
and
.
.
List of parameters
(24VAC)
A1
Sets the unit of measure for dew point in ˚C or ˚F.
Total hours of dryer operation = A3x1000+A2
A2/A3
(display only).
Like A2/A3 but for hours of refrigeration compressor opera-
A4/A5
tion.
Sets Hd Warning intervention temperature (see par. 5.4 in
A6
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
Dryer model:
C5
---
0 models PDRD250 ---1200
:
---
1 models PDRD1400 ---3000
C7
Not available
C29
Must be set to "0".
Operating logic of the alarm/machine status relay.
0 = relay energised when dryer is running, de---energised if
in warning/alarm status.
C36
1 = relay de---energised when dryer is running, energised if
in warning/alarm status.
2 = relay de---energised when dryer is not running, energised
when running.
C37
Not available
Sets the seconds of condensate drain opening (if set in
d1
TIMED mode).
d2
Like d1, but for seconds closed.
Sets condensate drain operation mode:
---
tIM = TIMED
d3
---
Con = EXTERNAL (24VAC)
Changing parameters
x
After displaying the parameter, press
é
x
and
, then press
to confirm.
y
Press
to return to STANDARD mode.
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),
displays the alarm code. In the case of a Warning,
tively displays the fault code and the dew point and WARNING
LED comes on.
If an alarm occurs:
1) Identify and eliminate the cause;
z
2) press
to reset the alarm;
x
3) press
to restart the dryer.
If a warning without automatic reset occurs:
1) identify and eliminate the cause;
z
2) press
to reset the warning.
4
PDRD250
z
, change with
[
[
alterna-
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