2-3
62-10630
2.4 STARTING
CAUTION
If starting unit for the first time after installa-
tion the compressor pressure regulating
valve will need to be reset (refer to para-
graph 4.15)
CAUTION
If starting unit for the first time after installa-
tion or starting after adding/removing of an
optional feature or if Owners operating pa-
rameters have changed the Configuration
will need to be reset (refer to paragraph 2.9)
Depending on desired mode of operation, either start
the vehicle engine or close the power source circuit
breaker.
Press the ON key to start the unit
(start-up is time-delayed for 40
seconds).
The digital display of the cab com-
mand displays the box tempera-
ture.
Check the temperature set-point
is correct by pressing the SET
key; the set-point temperature is
highlighted on the digital display.
NOTE
During start up, the evaporator motor speed in-
creases continuously from 0 to 2100 rpm over a
30 seconds time period. Also, the hot gas valve
is energized for 40 seconds seconds.
2.5 STOPPING
Press the OFF key or turn off the igni-
tion key.
2.6 SET-POINT ADJUSTMENT
It is possible to increase or decrease the set-point by
whole numbers until the required set-point is displayed.
If display stays highlighted, this indicates the set-point
displayed has not been validated.
The new setting for the set-point is validated by pressing
the SET key.
Displays the set-point temperature
Decrease the set-point
Increase the set-point
Validates set-point temperature.
Returns to display of the box tempe-
rature.
2.7 DEFROST CYCLE ADJUSTMENT
Defrost is an independent cycle overriding cooling and
heating functions to melt frost and ice from the
evaporator when necessary. Defrost may be initiated by
the microprocessor or manually by the operator once
the defrost termination thermostat has closed at
approximately 38
°
F (3.3
°
C). In defrost mode, the
microprocessor displays “dF” on the cab command and
set-point is no longer displayed.
During defrost, the evaporator fans shut down and
operation of the condenser fan is controlled by the
microprocessor. The end of the cycle is controlled by the
opening of the defrost termination thermostat at
approximately 48
°
F (8.9
°
C).
Defrost parameters may be set to eliminate defrost,
decrease the time between defrosts, allow full
automatic defrost, increase the time between defrosts
or set a forced interval between defrosts. To adjust the
defrost cycle, do the following:
Shut-down unit.
+
Display parameters.
Modify parameters.
Validate modified settings.
Return to display of box tempera-
ture.
NOTE
If when settings are adjusted, no key is activa-
ted within 5 sec. the system reverts to dis-
playing the box temperature. All validated
changes are recorded.
SETTINGS
0
: complete deletion of defrost.
0.5 to 0.9
: decreases time interval between automatic
defrost cycles in relation to present calculated time
interval.
AUT
:
automatic
defrost
optimized
by
the
microprocessor according to the type of cargo
transported (variable intervals).
1.1 to 1.5
: increases the time interval between
automatic defrost cycles in relation to present
calculated time interval.
1 H, 2 H,... 6 H
: Forced interval between each defrost
expressed in hours.
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