Parameters; Alarms And Warnings - Parker 250 Manual De Uso

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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 oper-
ation.
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
C5 Dryer model:
Mon = models DRD250-1200
MuL = models DRD1400-6000
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 Not available
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 Not available
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
- Con = EXTERNAL (24VAC)
Changing parameters
After displaying the parameter, press
x
z
, then press to confi rm.
y
Press to return to STANDARD mode.

5.4 Alarms and Warnings

Alarms cause the dryer to switch off.
Warnings only cause a signal.
= A3x1000+A2 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.
250
List of alarms/warnings
x z é
HP
, change with and ,
CP
LP
Ld
Ht
[
[ displays
dSE
alternatively displays
Hd
HSE
High Pressure Alarm
Phases monitor Alarm
Low Pressure Alarm
Low Dew Point Alarm
Lt Low Evaporation Temperature Alarm
High Compressor Discharge Temperature Alarm = T> 120°C.
Dew Point Sensor Warning
The measured temperature must return within its normal range.
High Dew Point Warning
Automatic reset when the dew point = A6 - 4°F (2°C).
Discharge temperature sensor Warning
Scheduled Maintenance Warning
Sr
See par. 5.2 and 6.3
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