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4. DESCRIPTION
4.1. CAB COMMAND DESCRIPTION
The cab command shown in this manual is a multi-tempera-
ture model.
The procedures described in this document are the same for
a single-temperature cab command. The only difference are
the additional "COMP2" display and control keys.
1. Display (C1)
2. COMPARTMENT STATUS
led (C1)¹
3. MANUAL DEFROST key
(C1)
4. - key (C1)
5. SET key (C1)
6. + key (C1)
7. OFF key (C1)
8. ON key
(¹) Green: normal cycling (left half) / Red: malfunction (right
half).
(C1): Compartment 1 / (C2): Compartment 2.
Multi-temperature unit only.
If the cab command is built into the vehicle control panel it
must be located as far as possible from the heating ducts.
Maximum temperature of exposure: 70°C (150°F).
4.2. OPERATION PRINCIPLE
4.2.1. POWER SOURCE
4.2.1.1. IN "ROAD" MODE
®
PULSOR
units are equipped with the E-Drive all electric system,
which removes mechanical transmissions found in belt-driven refrig-
eration systems and transforms engine power into electricity through
a generator.
The generator is driven by the vehicle's batteries and supplies volt-
age to an inverter, which distributes it to the various components of
the unit.
The unit automatically starts or stops when the vehicle's engine is
switched on or off using the ignition switch.
4.2.1.2. IN "STANDBY" MODE
®
PULSOR
units can operate when the vehicle is docked by plugging
it into the mains.
62-61746-03
9. OFF key (C2)
10. - key (C2)
11. SET key (C2)
12. + key (C2)
13. MANUAL DEFROST key
(C2)
14. COMPARTMENT STATUS
led (C2)¹
15. Display (C2)
16. ROAD OPERATION led
17. STANDBY OPERATION
led
The power connection is automatically detected by the unit, which
starts in "Standby" mode after pressing the ON key.
4.2.2. OPERATING MODES
4.2.2.1. CONTROLLED TEMPERATURE (COOLING &
HEATING)
As soon as the setpoint temperature has been reached, the temper-
ature control is achieved by the start-up and shut down of the com-
pressor.
The evaporator(s) fan(s) are programmed to stop during regulation.
When transporting fragile loads such as fresh meat, vegetables and
cheese, it is possible to program the microprocessor to obtain con-
tinuous ventilation by the evaporator during regulation.
To activate or deactivate the function, please refer to the Sec-
tion 5.8, "Set user function" > "EFOr" function.
4.2.2.2. DEFROST
Frost gradually builds up on the evaporator coils during normal op-
eration. The evaporator coil is defrosted by sending hot gas through
the coil (or by using optional electric heater(s)).
Defrost operation is fully automatic from start to finish but, can be
manually initiated if required.
For further information, please refer to the Section 5.4, "Start
a manual defrost mode".
The start-up parameters can also be changed from automat-
ic to fixed interval. Please refer to the Section 5.8, "Set user
function".
4.2.2.3. EUTECTIC SPECIFICITIES
®
PULSOR
units can be equipped with eutectic plates in addition to
an evaporator in order to reach deep-frozen temperatures.
Theses units require special care in order to work properly:
- Deep-frozen temperature require extra time to be reached, there-
fore, units must be started well before your drive (e.g. the night be-
fore) to reach the desired temperature.
- Frost gradually builds up on the eutectic plates. Unlike a regular
evaporator, the defrost sequence is not automatic, but is still crucial
for proper operation, which is why the unit must be defrosted man-
ually on a regular basis.
For further information, please refer to the Section 5.6, "De-
frost the eutectic compartment".
The eutectic compartment is locked at -40°C (-40°F) and its
set point cannot be changed.
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