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4
Control
4.1 Control panel
Display
Display
Isolator switch.
P0
Shows alarms on the display, switches off
P1
the buzzer if activated and resets alarms.
Enables access to the menu for selecting
P2
the group of parameters.
Cancels an operation.
P3
Shifts the cursor or increases the value of a
P4
parameter.
Shifts the cursor or decreases the value of a
P5
parameter.
Shifts the cursor from one parameter to
P6
another or confi rms a parameter.
LED
ON
OFF
-
No Alarm
P1
Machine
Machine
P2
ON
OFF
!
Attention: Wait boot start up of "30 seconds".
4.2 Starting the chiller
4.2.1 Compressor heating
• Connect the power supply to the machine by turning the
main isolator switch QS [P0] to ON.
(Only for FL2 option:
MUST BE ACTIVATED 24 HOURS BEFORE STARTING THE
MACHINE).
Incorrect operation can damage the compressor.
• Switch the chiller ON as shown in the fi gure.
• Set the desired temperature on the controller.
Start
Pump
Comp 1:
Comp 2:
Press the button
Press the button
Main menu
On
OFF
USER
Press the button
FLASHING
Alarm present.
-
the message "ON" appears with the arrow fl ashing.
PCW420-650
!
Y
THE CRANKCASE HEATER
Status Unit : OFF
:
Comp 3:
Comp 4:
(P2)
to enter in the "main" menu.
(P5)
to select the parameter "On".
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(P6)
to confi rm.
ON
(P6)
Press the button
to start the chiller.
Water Outlet Temp.
b1 : 45.0 °F
Pump
:
Comp 1:
Comp 3:
Comp 2:
Comp 4:
Symbol
Status
Description
fi xed
OFF
fi xed
ON
fl ashing
Waiting to leave
4.2.2 Adjustments at commissioning
a) The chiller is set for operation at a default temperature of
45°F (7°C) with a differential of 7.2°F (4 °C); to adopt a new
setting, see eading 4.5.
b) Verify correct operation of the pump, using the pressure
gauge (read P1 and P0) and checking the pressure limit val-
ues (Pmax and Pmin) indicated on the pump data plate.
P1 = pressure with pump ON
P0 = pressure with pump OFF
Pmin < (P1-P0) < Pmax
- Example n°1.
Conditions:
closed circuit, pressure P0 = 29 PSIg (2 bar)
pump data plate values: Pmin 14PSIg(1 bar)/ Pmax 43PSIg
(3 bar)
adjust the valve outlet to give a pressure of
43PSIg (3 bar) < P1< 72PSIg (5 bar)
- Example n°2.
Conditions:
open circuit, pressure P0 = 0 PSIg (0 bar)
pump data plate values: Pmin 14PSIg(1 bar)/ Pmax 43PSIg
(3 bar)
adjust the valve outlet to give a pressure of
Pmin 14PSIg(1 bar)/ Pmax 43PSIg (3 bar)
c) Verify correct operation of the pump similarly under normal
running conditions.
Check also that the amperage of the pump is within the limits
indicated on the data plate.
d) Switch off the chiller and proceed to top up the hydraulic
circuit at the "SET" temperature.
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