3 About the system
Operation manual
8
EZESHP20 EZLSHP20AUAW1B
Exigo E1500 Trailer Refrigeration Unit
4P726855-1 – 2023.03
f
e
d
c
j
a
i
l m
b
o p
k
h
n
g
q r
a
Condenser
b
Compressor
c
Battery
d
Generator
e
Fuel lines
f
Fuel line connectors
g
IoT module
h
USB Serial Port
i
Grid electrical plug
j
User interface
k
Electrical box
l
Engine
m
ON/OFF switch
n
Evaporator
o
Radiator
p
Exhaust
q
Fuel pump
r
Fuel pre-filter
s
u
l
k
t
n a
p
d
f
v
j
a~r
See legend above
s
Cold room
t
Mounting bolts (M12)
u
Heat Shield
v
Service doors
3.3
Safety systems
▪ Engine coolant temperature sensor:
Measures the temperature of the coolant/antifreeze mix in the
engine cooling system. This information allows the engine control
unit to regulate the cooling appropriately, and so, prevent
overheating. The information of the engine coolant temperature
sensor can also lead to a shutdown of the engine.
▪ Low oil pressure switch:
The oil pressure switch is installed in the oil circuit of the engine. It
monitors the oil pressure and sends a signal to the controller when
the oil pressure is low. An alarm is then triggered, and if the signal
persists for a certain time, a shutdown of the engine will be the
result.
▪ Overload Relay:
The overload relay protects the generator. The overload relay
opens the electric circuit of the generator if it overloads for any
reason. This also sends a signal to the controller and an alarm is
then triggered.
▪ Smart FETs:
Smart FETs in the PCB protect some circuits and components
from an overcurrent condition.
