Parker PST090, User Manual, Page: 5 / 84

English
3/6
PST 090-340
ding the dryer.
• Avoid air inlet temperature fl uctuations.
4.4 Stop
a) Stop the dryer 2 minutes aft er the air compressor stops or in any
case aft er interruption of the air fl ow;
b) make sure compressed air does not enter the dryer when the dryer
is disconnected or if an alarm occurs.
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
x é
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
condition.
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 Confi 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 aft er 5 minutes.
5.2 Operation
Operation status
With the MAIN SWITCH “
&
” turned to “I ON” (dryer powe-
red) 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 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
(not for the model PST090 )
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 war-
ning code (see par. 5.4 in List of alarm/warnings).
Press
z
to cancel the warning for 24 hours.
Condensate drain
Th ere 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