Foster FX Blast Chiller, Service Manual

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Defrost
Defrost will be initiated automatically in the hold mode at pre-set intervals.
4
To initiate a manual defrost during the hold mode press for 5 seconds, defrost will start with
being displayed.
d
Alarm and Warnings
d
Defrost in operation
AL Low Temperature Alarm
AH High Temperature Alarm
PR1 Air Probe fault
PR2 Food Probe Fault
Parameter Setting and Adjustment
Setting the configuration parameters
The parameters are arranged on two levels
Access to the First Level
To access the parameters the controller must be in the stand-by mode.
To place the controller in ‘stand–by’ press for 2 seconds, whilst in stand-by the cabinet internal air
temperature will be displayed intermittently.
Press
and for 4 seconds the display will show ‘ PA ’.
Press ‘
r0 ’ will be displayed.
Press
to display the value followed by to decrease the value or to increase the value.
Press
to return to the followed by to move to the next parameter.
On completion of the changes press
plus to exit or wait 60 seconds
First Level Configuration Parameters
Mnem. Definition Min. Max Default Dim. FXBC
r0 Parameter r7, r8, r9 and Ra hysteresis 0.1 15.0 2.0 °K 2.0
r1 Timed positive blast chilling duration 1 600 90 min. 90
r2 Timed negative blast chilling duration 1 600 240 min. 240
r3 Positive blast chill end point temperature (food probe) -99.0 99.0 3.0 °C 3.0
r4 Negative blast chill end point temperature (food probe) -99.0 99.0 -18.0 °C -18.0
r5 Set temperature positive blast chilling duration 1 600 90 min. 90
r6 Set temperature negative blast chilling duration 1 600 240 min. 240
r7 Positive blast chilling setpoint (air temp.) -99.0 99.0 0.0 °C 0.0
r8
Negative blast chilling setpoint (air temp.) -99.0 99.0 -40.0 °C -25.0
r9
Post positive blast chilling storage setpoint
-99.0 99.0 2.0 °C 2.0
rA Post negative blast chilling storage setpoint -99.0 99.0 -20.0 °C -20.0