Parker PDRD Series, User Manual

Page: 84 / 129

3
PDRD250
English
5 Control
5.1 Control panel
3
4
2
1
y
x é
z
[
&
Display
Reference Name Description
1
MAIN SWITCH
I ON = dryer powered;
O OFF = dryer not powered.
2
POWER LED
Yellow = dryer powered.
2
POWER LED
Green = Dryer operating.
3
WARNING LED
Off = no signal.
3
WARNING LED
Flashing = Alarm or warning.
4
DRAIN LED Lit = Drain open.
Keypad mode STANDARD MENU*
x
ON/OFF BUTTON
Switching on/off Confirm
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 pow-
ered) 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 terminals X4.0 and X4.10 (see par. 8.8) and connect the
remote start/stop switch (to be provided 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 ONstatus (refrigeration compressor operat-
ing) more than 10 times in one hour.
Scheduled maintenance
Y
When the DISPLAY
[
alternatively shows the Sr warn-
ing code and dew point, contact authorized assistance personnel
for carrying out scheduled maintenance indicated in par. 6.3 and
for resetting the warning code (see par. 5.4 in List of alarm/warn-
ings).
Press
z
to cancel the warning for 24 hours.
Condensate drain
There are two operation modes:
a) TIMED --- check that the automatic condensate drainage sys-
tem 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 varies the amount of condensate to be removed.
For standard dryer operating conditions, see the following
table of recommended settings:
Model Parameter d1
PDRD250
5
Parameter d1: time open in seconds for every 2 minutes of
operation.